WO2021174514A1 - Appareil et procédé pour récupérer rapidement un service à commutation de paquets (ps) après une fin d'appel d'abonnement à des données non par défaut (dds) - Google Patents

Appareil et procédé pour récupérer rapidement un service à commutation de paquets (ps) après une fin d'appel d'abonnement à des données non par défaut (dds) Download PDF

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Publication number
WO2021174514A1
WO2021174514A1 PCT/CN2020/078113 CN2020078113W WO2021174514A1 WO 2021174514 A1 WO2021174514 A1 WO 2021174514A1 CN 2020078113 W CN2020078113 W CN 2020078113W WO 2021174514 A1 WO2021174514 A1 WO 2021174514A1
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WIPO (PCT)
Prior art keywords
sim
network supported
processor
data connection
network
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PCT/CN2020/078113
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English (en)
Inventor
Chaofeng HUI
Quanling ZHANG
Fojian ZHANG
Xiuqiu XIA
Yuankun ZHU
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Qualcomm Incorporated
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Priority to PCT/CN2020/078113 priority Critical patent/WO2021174514A1/fr
Publication of WO2021174514A1 publication Critical patent/WO2021174514A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • wireless communication devices may employ a variety of methods for achieving network connections, and enable users to access multiple services from different network operators. Since the number and type of devices has grown dramatically, and each device category, manufacturer, and service may have a wide range of device platforms and operating systems, efficiency in providing multiple service configuration options to the same or different users remains very important for network operators. Further, streamlining different service configurations on a user device improves the user experience.
  • Multi-subscriber identity module (SIM) wireless communication devices have become increasingly popular because of the versatility that such devices provide, particularly in countries where there are many service providers.
  • a multi-SIM multi-standby (MSMS) device enables at least two SIMs to be in idle mode waiting to begin communications, and but only allows one SIM at a time to participate in an active communication due to sharing of a single radio frequency (RF) resource (e.g., a wireless transceiver) .
  • RF radio frequency
  • Various aspects include systems and methods for managing data call recovery by a processor of a multi-subscriber identity module (SIM) wireless device having at least two SIMs associated with a shared radio frequency (RF) resource.
  • SIM multi-subscriber identity module
  • Various aspects may include detecting loss of a data connection with a network supported by the first SIM, determining whether the loss of the data connection was caused by use of an IP Multimedia Subsystem (IMS) service in a network supported by the second SIM, and triggering a telephony framework to reestablish without delay the data connection with the network supported by the first SIM in response to determining that the loss of the data connection was caused by use of the IMS service in the network supported by the second SIM.
  • IMS IP Multimedia Subsystem
  • the first SIM may include a designated data service (DDS) .
  • the IMS service in the network supported by the second SIM may include voice-over-LTE (VoLTE) .
  • the IMS service in the network supported by the second SIM may include voice-over-New Radio (VoNR) .
  • triggering the telephony framework to reestablish without delay the data connection with the network supported by the first SIM may include generating an error code that is reported to the application processor.
  • the data connection with the network supported by the first SIM may include one or more Evolved Packet System (EPS) bearer with a packet data network (PDN) .
  • EPS Evolved Packet System
  • triggering the telephony framework to reestablish without delay the data connection with the network supported by the first SIM may include passing an indication to the telephony framework that causes an immediate PDN connectivity request to the network supported by the first SIM.
  • detecting loss of the data connection with the network supported by the first SIM may include sending a serviced request to the network supported by the first SIM, and receiving a message from the network supported by the first SIM reporting release of the one or more EPS bearer.
  • receiving the message from the network supported by the first SIM may include receiving a Radio Resource Control (RRC) connection reconfiguration message, and may further include locally deactivating the one or more EPS bearer in response to receiving the RRC connection reconfiguration message.
  • RRC Radio Resource Control
  • determining whether the loss of the data connection was caused by use of an IMS service in the network supported by the second SIM may include determining whether the loss was preceded by termination of an active communication provided by the IMS service.
  • the data connection with the network supported by the first SIM may include a packet data unit (PDU) session with a PDN.
  • PDU packet data unit
  • triggering the telephony framework to immediately reestablish the data connection with the network supported by the first SIM may include passing an indication to the telephony framework that causes an immediate PDU session establishment request to be sent to the network supported by the first network.
  • detecting loss of the data connection with the network supported by the first SIM may include sending a service request to the network supported by the first SIM, and receiving a message from the network supported by the first SIM reporting release of the PDU session.
  • receiving the message from the network supported by the first SIM may include receiving a Radio Resource Control (RRC) reconfiguration message, and may further include locally deleting a context of the PDU in response to receiving the RRC reconfiguration message.
  • RRC Radio Resource Control
  • Further aspects may include a wireless device having a processor configured to perform one or more operations of any of the methods summarized above. Further aspects may include a non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause a processor of a wireless device to perform operations of any of the methods summarized above. Further aspects include a wireless device having means for performing functions of any of the methods summarized above. Further aspects include a system-on-chip for use in a wireless device that includes a processor configured to perform one or more operations of any of the methods summarized above. Further aspects include a system in a package that includes two systems on chip for use in a wireless device that includes a processor configured to perform one or more operations of any of the methods summarized above.
  • FIG. 1 is a system block diagram illustrating an example communication system suitable for implementing any of the various embodiments.
  • FIG. 2 is a component block diagram illustrating an example computing and wireless modem system suitable for implementing any of the various embodiments.
  • FIG. 3 is a component block diagram illustrating a software architecture including a radio protocol stack for the user and control planes in wireless communications suitable for implementing any of the various embodiments.
  • FIG. 4 is a component block diagram illustrating a system configured for wireless communication in accordance with various embodiments.
  • FIG. 5 is a process flow diagram illustrating a method for wireless communication in accordance with various embodiments.
  • FIG. 6 is a process flow diagram illustrating a method for wireless communication in accordance with various embodiments.
  • FIG. 7 is a process flow diagram illustrating a method for wireless communication in accordance with various embodiments.
  • FIG. 8 is a component block diagram of a network computing device suitable for use with various embodiments.
  • FIG. 9 is a component block diagram of a wireless device suitable for use with various embodiments.
  • Various embodiments include systems and methods for recovering a data communication on a default data subscription (DDS) of a multi-subscriber identity module (SIM) wireless device having at least two SIMs associated with a shared RF resource.
  • DDS data subscription
  • SIM multi-subscriber identity module
  • Various embodiments may improve user experience by avoiding delay from a back-off timer normally implemented by the telephony framework when a data communication has been released by the network.
  • wireless device is used herein to refer to any one or all of wireless router devices, wireless appliances, cellular telephones, smartphones, portable computing devices, personal or mobile multi-media players, laptop computers, tablet computers, smartbooks, ultrabooks, palmtop computers, wireless electronic mail receivers, Multimedia Internet-enabled cellular telephones, medical devices and equipment, biometric sensors/devices, wearable devices including smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart rings, smart bracelets, etc. ) , entertainment devices (e.g., wireless gaming controllers, music and video players, satellite radios, etc.
  • wireless-network enabled Internet of Things (IoT) devices including smart meters/sensors, industrial manufacturing equipment, large and small machinery and appliances for home or enterprise use, wireless communication elements within autonomous and semiautonomous vehicles, wireless devices affixed to or incorporated into various mobile platforms, global positioning system devices, and similar electronic devices that include a memory, wireless communication components and a programmable processor.
  • IoT Internet of Things
  • SOC system-on-chip
  • a single SOC may contain circuitry for digital, analog, mixed-signal, and radio-frequency functions.
  • a single SOC may also include any number of general purpose and/or specialized processors (digital signal processors, modem processors, video processors, etc. ) , memory blocks (e.g., ROM, RAM, Flash, etc. ) , and resources (e.g., timers, voltage regulators, oscillators, etc. ) .
  • SOCs may also include software for controlling the integrated resources and processors, as well as for controlling peripheral devices.
  • SIP system in a package
  • a SIP may include a single substrate on which multiple IC chips or semiconductor dies are stacked in a vertical configuration.
  • the SIP may include one or more multi-chip modules (MCMs) on which multiple ICs or semiconductor dies are packaged into a unifying substrate.
  • MCMs multi-chip modules
  • a SIP may also include multiple independent SOCs coupled together via high speed communication circuitry and packaged in close proximity, such as on a single motherboard or in a single wireless device. The proximity of the SOCs facilitates high speed communications and the sharing of memory and resources.
  • SIM Subscriber Identity
  • SIM card SIM card
  • subscriber identity module may interchangeably refer to a memory that may be an integrated circuit or embedded into a removable card, and that stores an International Mobile Subscriber Identity (IMSI) , related key, and/or other information used to identify and/or authenticate a wireless device on a network and enable a communication service with the network.
  • IMSI International Mobile Subscriber Identity
  • Examples of SIMs include the Universal Subscriber Identity Module (USIM) provided for in the Long Term Evolution (LTE) 3GPP standard, and the Removable User Identity Module (R-UIM) provided for in the 3GPP2 standard.
  • USB Universal Subscriber Identity Module
  • R-UIM Removable User Identity Module
  • UICC Universal Integrated Circuit Card
  • a SIM may also refer to a virtual SIM (VSIM) , which may be implemented as a remote SIM profile loaded in an application on a wireless device, and enabling normal SIM functions on the wireless device.
  • VSIM virtual SIM
  • SIM is also be used herein as a shorthand reference to the communication service associated with and enabled by the information stored in a particular SIM as the SIM and the communication network, as well as the services and subscriptions supported by that network, correlate to one another.
  • SIM may also be used as a shorthand reference to the protocol stack and/or modem stack and communication processes used in establishing and conducting communication services with subscriptions and networks enabled by the information stored in a particular SIM.
  • multi-SIM multi-standby communication device ” “MSMS wireless device, ” “dual-SIM dual standby, ” and “DSDS wireless device” may interchangeably describe a wireless communication device that is configured with more than one SIM and allows idle-mode operations to be performed on two networks simultaneously, as well as selective communication on one network while performing idle-mode operations on at least one other network.
  • Dual-SIM dual-standby (DSDS) communication devices are an example of a type of MSMS communication devices.
  • the terms “network, ” “system, ” “wireless network, ” “cellular network, ” and “wireless communication network” may interchangeably refer to a portion or all of a wireless network of a carrier associated with a wireless device and/or subscription on a wireless device.
  • the techniques described herein may be used for various wireless communication networks, such as Code Division Multiple Access (CDMA) , time division multiple access (TDMA) , FDMA, orthogonal FDMA (OFDMA) , single carrier FDMA (SC-FDMA) and other networks.
  • CDMA Code Division Multiple Access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single carrier FDMA
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support at least one radio access technology, which may operate on one or more frequency or range of frequencies.
  • a CDMA network may implement Universal Terrestrial Radio Access (UTRA) (including Wideband Code Division Multiple Access (WCDMA) standards) , CDMA2000 (including IS-2000, IS-95 and/or IS-856 standards) , etc.
  • UTRA Universal Terrestrial Radio Access
  • CDMA2000 including IS-2000, IS-95 and/or IS-856 standards
  • a TDMA network may implement GSM Enhanced Data rates for GSM Evolution (EDGE) .
  • EDGE GSM Enhanced Data rates for GSM Evolution
  • an OFDMA network may implement Evolved UTRA (E-UTRA) (including LTE standards) , IEEE 802.11 (WiFi) , IEEE 802.16 (WiMAX) , IEEE 802.20, etc.
  • E-UTRA Evolved UTRA
  • E-UTRAN Evolved Universal Terrestrial Radio Access
  • eNodeB eNodeB
  • network operator ” “operator, ” “mobile network operator, ” “carrier, ” and “service provider” are used interchangeably herein to describe a provider of wireless communications services that owns or controls elements to sell and deliver communication services to an end user, and provides necessary provisioning and credentials as policies implemented in user device subscriptions.
  • RF resource refers to the components in a communication device that send, receive, and decode radio frequency signals.
  • An RF resource typically includes a number of components coupled together that transmit RF signals that are referred to as a “transmit chain, ” and a number of components coupled together that receive and process RF signals that are referred to as a “receive chain. ”
  • LTE is a mobile network standard for 4G wireless communication of high-speed data developed by the 3GPP (3rd Generation Partnership Project) and specified in its Release 8 document series.
  • LTE has been designed to support only packet-switched (PS) services.
  • Data services in LTE may be provided over the Internet, while multimedia services may be supported by the IMS framework.
  • the LTE standard is based on the evolution of the Universal Mobile Telecommunications System (UMTS) radio access through the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) .
  • UMTS Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the E-UTRAN together with the Evolved Packet Core (EPC) network (core network accommodating LTE) make up an Evolved Packet System (EPS) .
  • EPC Evolved Packet Core
  • EPS Evolved Packet System
  • IP Internet Protocol
  • the 5G system is an advanced technology from 4G LTE, and provides a new radio access technology (RAT) through the evolution of the existing mobile communication network structure.
  • a 5G system may support, for example, extended LTE (eLTE) as well as non-3GPP access (e.g., WLAN) .
  • eLTE extended LTE
  • WLAN non-3GPP access
  • LTE and 5G systems different data traffic may exist for different services.
  • conventional IP-oriented (i.e., “data-centric” ) applications e.g. web-browsers, games, e-mail applications, etc.
  • Real-time communication services e.g., voice calls, Short Message Service (SMS) communications, etc.
  • SMS Short Message Service
  • IMS IMS services
  • IMS Internet multimedia subsystem
  • OMA Open Mobile Alliance
  • PoC Push-to-Talk over Cellular
  • MMTel Instant Messaging
  • MMTel TISPAN/3GPP multimedia telephony for IMS
  • IMS services that have been developed for deployment as next-generation LTE services include Voice over LTE (VoLTE) and Video Telephony (VT) .
  • VoIP Voice over LTE
  • VT Video Telephony
  • LTE and 5G data is all IP-based
  • the multiple data types/services may be accessed through different packet data networks (PDNs) provided by a network operator, each of which provides a different IP address.
  • PDNs packet data networks
  • the network is able to identify with better granularity the particular type of application for allocated IP addresses are used.
  • the network operator may ensure efficient allocation of resources, thereby providing better service to users.
  • Modern wireless communication devices may now include a plurality of SIM cards that enable a user to connect to different mobile networks while using the same mobile communication device.
  • Each SIM card serves to identify and authenticate a subscriber using a particular mobile communication device, and each SIM card is associated with only one subscription.
  • a SIM card may be associated with a subscription to one of a GSM, TD-SCDMA, CDMA2000, and/or WCDMA system.
  • multi-SIM operations may be applicable to any of a number of wireless communication systems, using various multiple access schemes, such as, but not limited to, CDMA, FDMA, OFDMA, or TDMA.
  • Normal RF resource arbitration may be employed to schedule use of a shared RF resource between SIMs on an MSMS wireless communication device.
  • an MSMS device in which the shared RF resource is used for an active communication in a service provided by an Internet PDN on one SIM, one or more other SIM may be in an idle mode and not actively contending for access to the RF resource.
  • the MSMS device may maintain a connection with a serving network associated with the other SIM (s) in order to perform limited activities (i.e., “idle mode activities” ) .
  • examples of idle mode activates may include monitoring system information, receiving paging messages, measuring signal strength of neighbor cells, etc. If the shared RF resource is used for an active communication in a service provided by an IMS PDN on one SIM, activity on the other SIM (s) (including idle mode activities) may be suspended.
  • Each SIM in a wireless communication device is configured with its own mobile subscription identification number (MSIN) (also called the mobile identification number (MIN) , and/or mobile station identification (MSID) ) , which is the 10-digit unique number that the wireless carrier uses to identify the device under standards for cellular and PCS technologies.
  • MSIN mobile subscription identification number
  • MIN mobile identification number
  • MSID mobile station identification
  • An IMS PDN connection may be established for each SIM in order to enable real-time communications associated with each of the different MSINs.
  • data-centric applications are not associated with a particular MSIN. Since such services are generally accessed through an Internet PDN, an Internet PDN connection only needs to be established for one SIM of the MSMS device.
  • This one SIM referred to as the designated data service (DDS)
  • DDS data service
  • DDS data service
  • the data connection on the DDS SIM may be lost due to an extended voice or other communication on a non-DDS SIM that requires exclusive use of a shared RF resource. That is, the network associated with the DDS SIM may release resources allocated to the wireless device, including radio bearers in the user plane and signaling connections in the control plane.
  • the network associated with the DDS SIM may release resources allocated to the wireless device, including radio bearers in the user plane and signaling connections in the control plane.
  • a back-off timer automatically employed as part of the retry mechanism of the telephony framework (e.g., Android Telephony (ATEL) ) .
  • Such back-off timer which may have a duration of up to 10 seconds, is designed to avoid frequent data call setup when there are temporary network issues.
  • waiting for expiration of the back-off timer only introduces unnecessary delay, impacting user experience.
  • Various embodiments avoid this delay by generating a new error indication in response to a loss of the data connection on the DDS SIM that is caused by use of the shared radio resource by a non-DDS SIM.
  • the processor e.g., modem processor
  • the processor may provide indication to the telephony framework that prompts an immediate attempt to reestablish the data connection.
  • FIG. 1 is a system block diagram illustrating an example communication system 100 suitable for implementing any of the various embodiments.
  • the communications system 100 may be a 5G New Radio (NR) network, or any other suitable network such as an LTE network.
  • NR 5G New Radio
  • the communications system 100 may include a heterogeneous network architecture that includes a core network 140 and a variety of mobile devices (illustrated as wireless device 120a-120e in FIG. 1) .
  • the communications system 100 may also include a number of base stations (illustrated as the BS 110a, the BS 110b, the BS 110c, and the BS 110d) and other network entities.
  • a base station is an entity that communicates with wireless devices (mobile devices) , and also may be referred to as a Node B, an LTE Evolved nodeB (eNodeB or eNB) , an access point (AP) , a Radio head, a transmit receive point (TRP) , a New Radio base station (NR BS) , a 5G NodeB (NB) , a Next Generation NodeB (gNodeB or gNB) , or the like.
  • Each base station may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a base station, a base station Subsystem serving this coverage area, or a combination thereof, depending on the context in which the term is used.
  • a base station 110a-110d may provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by mobile devices with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by mobile devices with service subscription.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by mobile devices having association with the femto cell (for example, mobile devices in a closed subscriber group (CSG) ) .
  • a base station for a macro cell may be referred to as a macro BS.
  • a base station for a pico cell may be referred to as a pico BS.
  • a base station for a femto cell may be referred to as a femto BS or a home BS.
  • a base station 110a may be a macro BS for a macro cell 102a
  • a base station 110b may be a pico BS for a pico cell 102b
  • a base station 110c may be a femto BS for a femto cell 102c.
  • a base station 110a-110d may support one or multiple (for example, three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not be stationary, and the geographic area of the cell may move according to the location of a mobile base station.
  • the base stations 110a-110d may be interconnected to one another as well as to one or more other base stations or network nodes (not illustrated) in the communications system 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or a combination thereof using any suitable transport network
  • the base station 110a-110d may communicate with the core network 140 over a wired or wireless communication link 126.
  • the wireless device 120a-120e may communicate with the base station 110a-110d over a wireless communication link 122.
  • the wired communication link 126 may use a variety of wired networks (e.g., Ethernet, TV cable, telephony, fiber optic and other forms of physical network connections) that may use one or more wired communication protocols, such as Ethernet, Point-To-Point protocol, High-Level Data Link Control (HDLC) , Advanced Data Communication Control Protocol (ADCCP) , and Transmission Control Protocol/Internet Protocol (TCP/IP) .
  • wired networks e.g., Ethernet, TV cable, telephony, fiber optic and other forms of physical network connections
  • wired communication protocols such as Ethernet, Point-To-Point protocol, High-Level Data Link Control (HDLC) , Advanced Data Communication Control Protocol (ADCCP) , and Transmission Control Protocol/Internet Protocol (TCP/IP) .
  • HDMI High-Level Data Link Control
  • ADCCP Advanced Data Communication Control Protocol
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • the communications system 100 also may include relay stations (e.g., relay BS 110d) .
  • a relay station is an entity that can receive a transmission of data from an upstream station (for example, a base station or a mobile device) and transmit the data to a downstream station (for example, a wireless device or a base station) .
  • a relay station also may be a mobile device that can relay transmissions for other wireless devices.
  • a relay station 110d may communicate with macro the base station 110a and the wireless device 120d in order to facilitate communication between the base station 110a and the wireless device 120d.
  • a relay station also may be referred to as a relay base station, a relay base station, a relay, etc.
  • the communications system 100 may be a heterogeneous network that includes base stations of different types, for example, macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations may have different transmit power levels, different coverage areas, and different impacts on interference in communications system 100. For example, macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of base stations and may provide coordination and control for these base stations.
  • the network controller 130 may communicate with the base stations via a backhaul.
  • the base stations also may communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul.
  • the wireless devices 120a, 120b, 120c may be dispersed throughout communications system 100, and each wireless device may be stationary or mobile.
  • a wireless device also may be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc.
  • a macro base station 110a may communicate with the communication network 140 over a wired or wireless communication link 126.
  • the wireless devices 120a, 120b, 120c may communicate with a base station 110a-110d over a wireless communication link 122.
  • the wireless communication links 122, 124 may include a plurality of carrier signals, frequencies, or frequency bands, each of which may include a plurality of logical channels.
  • the wireless communication links 122 and 124 may utilize one or more Radio access technologies (RATs) .
  • RATs Radio access technologies
  • Examples of RATs that may be used in a wireless communication link include 3GPP LTE, 3G, 4G, 5G (e.g., NR) , GSM, CDMA, WCDMA, Worldwide Interoperability for Microwave Access (WiMAX) , Time Division Multiple Access (TDMA) , and other mobile telephony communication technologies cellular RATs.
  • RATs that may be used in one or more of the various wireless communication links 122, 124 within the communication system 100 include medium range protocols such as Wi-Fi, LTE-U, LTE-Direct, LAA, MuLTEfire, and relatively short range RATs such as ZigBee, Bluetooth, and Bluetooth Low Energy (LE) .
  • medium range protocols such as Wi-Fi, LTE-U, LTE-Direct, LAA, MuLTEfire
  • relatively short range RATs such as ZigBee, Bluetooth, and Bluetooth Low Energy (LE) .
  • Certain wireless networks utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kHz and the minimum Resource allocation (called a “resource block” ) may be 12 subcarriers (or 180 kHz) . Consequently, the nominal Fast File Transfer (FFT) size may be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz) , respectively.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover 1.08 MHz (i.e., 6 Resource blocks) , and there may be 1, 2, 4, 8 or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, respectively.
  • NR may utilize OFDM with a cyclic prefix (CP) on the uplink (UL) and downlink (DL) and include support for half-duplex operation using time division duplex (TDD) .
  • CP cyclic prefix
  • TDD time division duplex
  • a single component carrier bandwidth of 100 MHz may be supported.
  • NR Resource blocks may span 12 sub-carriers with a sub-carrier bandwidth of 75 kHz over a 0.1 millisecond (ms) duration.
  • Each Radio frame may consist of 50 subframes with a length of 10 ms. Consequently, each subframe may have a length of 0.2 ms.
  • Each subframe may indicate a link direction (i.e., DL or UL) for data transmission and the link direction for each subframe may be dynamically switched.
  • Each subframe may include DL/UL data as well as DL/UL control data.
  • Beamforming may be supported and beam direction may be dynamically configured.
  • Multiple Input Multiple Output (MIMO) transmissions with precoding may also be supported.
  • MIMO configurations in the DL may support up to eight transmit antennas with multi-layer DL transmissions up to eight streams and up to two streams per wireless device. Multi-layer transmissions with up to 2 streams per wireless device may be supported. Aggregation of multiple cells may be supported with up to eight serving cells.
  • NR may support a different air interface, other than an OFDM-based air interface.
  • MTC and eMTC mobile devices include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (for example, remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some mobile devices may be considered Internet-of-Things (IoT) devices or may be implemented as NB-IoT (narrowband internet of things) devices.
  • a wireless device 120a-e may be included inside a housing that houses components of the wireless device, such as processor components, memory components, similar components, or a combination thereof.
  • any number of communication systems and any number of wireless networks may be deployed in a given geographic area.
  • Each communications system and wireless network may support a particular Radio access technology (RAT) and may operate on one or more frequencies.
  • RAT also may be referred to as a Radio technology, an air interface, etc.
  • a frequency also may be referred to as a carrier, a frequency channel, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between communications systems of different RATs.
  • 4G/LTE and/or 5G/NR RAT networks may be deployed.
  • two or more mobile devices 120a-e may communicate directly using one or more sidelink channels 124 (for example, without using a base station 110 as an intermediary to communicate with one another) .
  • the wireless devices 120a-e may communicate using peer- to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or similar protocol) , a mesh network, or similar networks, or combinations thereof.
  • V2X vehicle-to-everything
  • the wireless device 120a-e may perform scheduling operations, Resource selection operations, as well as other operations described elsewhere herein as being performed by the base station 110a
  • FIG. 2 is a component block diagram illustrating an example computing and wireless modem system 200 suitable for implementing any of the various embodiments.
  • Various embodiments may be implemented on a number of single processor and multiprocessor computer systems, including a system-on-chip (SOC) or system in a package (SIP) .
  • SOC system-on-chip
  • SIP system in a package
  • the illustrated example computing system 200 (which may be a SIP in some embodiments) includes a two SOCs 202, 204 coupled to a clock 206, a voltage regulator 208, and a wireless transceiver 266 configured to send and receive wireless communications via an antenna (not shown) to/from wireless devices, such as a base station 110a.
  • the first SOC 202 operate as central processing unit (CPU) of the wireless device that carries out the instructions of software application programs by performing the arithmetic, logical, control and input/output (I/O) operations specified by the instructions.
  • the second SOC 204 may operate as a specialized processing unit.
  • the second SOC 204 may operate as a specialized 5G processing unit responsible for managing high volume, high speed (e.g., 5 Gbps, etc. ) , and/or very high frequency short wave length (e.g., 28 GHz mmWave spectrum, etc. ) communications.
  • high speed e.g., 5 Gbps, etc.
  • very high frequency short wave length e.g., 28 GHz mmWave spectrum, etc.
  • the first SOC 202 may include a digital signal processor (DSP) 210, a modem processor 212, a graphics processor 214, an application processor 216, one or more coprocessors 218 (e.g., vector co-processor) connected to one or more of the processors, memory 220, custom circuity 222, system components and resources 224, an interconnection/bus module 226, one or more temperature sensors 230, a thermal management unit 232, and a thermal power envelope (TPE) component 234.
  • DSP digital signal processor
  • modem processor 212 e.g., a graphics processor 214
  • an application processor 216 e.g., one or more coprocessors 218 (e.g., vector co-processor) connected to one or more of the processors, memory 220, custom circuity 222, system components and resources 224, an interconnection/bus module 226, one or more temperature sensors 230, a thermal management unit 232, and a thermal power envelope (TPE) component 234.
  • TPE
  • the second SOC 204 may include a 5G modem processor 252, a power management unit 254, an interconnection/bus module 264, the plurality of mmWave transceivers 256, memory 258, and various additional processors 260, such as an applications processor, packet processor, etc.
  • Each processor 210, 212, 214, 216, 218, 252, 260 may include one or more cores, and each processor/core may perform operations independent of the other processors/cores.
  • the first SOC 202 may include a processor that executes a first type of operating system (e.g., FreeBSD, LINUX, OS X, etc. ) and a processor that executes a second type of operating system (e.g., MICROSOFT WINDOWS 10) .
  • a first type of operating system e.g., FreeBSD, LINUX, OS X, etc.
  • a second type of operating system e.g., MICROSOFT WINDOWS 10.
  • processors 210, 212, 214, 216, 218, 252, 260 may be included as part of a processor cluster architecture (e.g., a synchronous processor cluster architecture, an asynchronous or heterogeneous processor cluster architecture, etc. ) .
  • a processor cluster architecture e.g., a synchronous processor cluster architecture, an asynchronous or heterogeneous processor cluster architecture, etc.
  • the first and second SOC 202, 204 may include various system components, resources and custom circuitry for managing sensor data, analog-to-digital conversions, wireless data transmissions, and for performing other specialized operations, such as decoding data packets and processing encoded audio and video signals for rendering in a web browser.
  • the system components and resources 224 of the first SOC 202 may include power amplifiers, voltage regulators, oscillators, phase-locked loops, peripheral bridges, data controllers, memory controllers, system controllers, access ports, timers, and other similar components used to support the processors and software clients running on a wireless device.
  • the system components and resources 224 and/or custom circuitry 222 may also include circuitry to interface with peripheral devices, such as cameras, electronic displays, wireless communication devices, external memory chips, etc.
  • the first and second SOC 202, 204 may communicate via interconnection/bus module 250.
  • the various processors 210, 212, 214, 216, 218, may be interconnected to one or more memory elements 220, system components and resources 224, and custom circuitry 222, and a thermal management unit 232 via an interconnection/bus module 226.
  • the processor 252 may be interconnected to the power management unit 254, the mmWave transceivers 256, memory 258, and various additional processors 260 via the interconnection/bus module 264.
  • the interconnection/bus module 226, 250, 264 may include an array of reconfigurable logic gates and/or implement a bus architecture (e.g., CoreConnect, AMBA, etc. ) . Communications may be provided by advanced interconnects, such as high-performance networks-on chip (NoCs) .
  • NoCs high-performance networks-on chip
  • the first and/or second SOCs 202, 204 may further include an input/output module (not illustrated) for communicating with resources external to the SOC, such as a clock 206 and a voltage regulator 208.
  • resources external to the SOC e.g., clock 206, voltage regulator 208 may be shared by two or more of the internal SOC processors/cores.
  • various embodiments may be implemented in a wide variety of computing systems, which may include a single processor, multiple processors, multicore processors, or any combination thereof.
  • FIG. 3 is a component block diagram illustrating a software architecture 300 including a radio protocol stack for the user and control planes in wireless communications suitable for implementing any of the various embodiments.
  • the wireless device 320 may implement the software architecture 300 to facilitate communication between a wireless device 320 (e.g., the wireless device 120a-120e, 200) and the base station 350 (e.g., the base station 110a) of a communication system (e.g., 100) .
  • layers in software architecture 300 may form logical connections with corresponding layers in software of the base station 350.
  • the software architecture 300 may be distributed among one or more processors (e.g., the processors 212, 214, 216, 218, 252, 260) .
  • the software architecture 300 may include multiple protocol stacks, each of which may be associated with a different SIM (e.g., two protocol stacks associated with two SIMs, respectively, in a dual-SIM wireless communication device) . While described below with reference to LTE communication layers, the software architecture 300 may support any of variety of standards and protocols for wireless communications, and/or may include additional protocol stacks that support any of variety of standards and protocols wireless communications.
  • the software architecture 300 may include a Non-Access Stratum (NAS) 302 and an Access Stratum (AS) 304.
  • the NAS 302 may include functions and protocols to support Packet filtering, security management, mobility control, session management, and traffic and signaling between a SIM (s) of the wireless device (e.g., SIM (s) 204) and its core network 140.
  • the AS 304 may include functions and protocols that support communication between a SIM (s) (e.g., SIM (s) 204) and entities of supported access networks (e.g., a base station) .
  • the AS 304 may include at least three layers (Layer 1, Layer 2, and Layer 3) , each of which may contain various sub-layers.
  • Layer 1 (L1) of the AS 304 may be a physical layer (PHY) 306, which may oversee functions that enable transmission and/or reception over the air interface.
  • PHY physical layer
  • Examples of such physical layer 306 functions may include cyclic redundancy check (CRC) attachment, coding blocks, scrambling and descrambling, modulation and demodulation, signal measurements, MIMO, etc.
  • the physical layer may include various logical channels, including the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) .
  • PDCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • Layer 2 (L2) of the AS 304 may be responsible for the link between the wireless device 320 and the base station 350 over the physical layer 306.
  • Layer 2 may include a Media Access Control (MAC) sublayer 308, a Radio link Control (RLC) sublayer 310, and a Packet data convergence protocol (PDCP) 312 sublayer, each of which form logical connections terminating at the base station 350.
  • MAC Media Access Control
  • RLC Radio link Control
  • PDCP Packet data convergence protocol
  • Layer 3 (L3) of the AS 304 may include a Radio Resource Control (RRC) sublayer 3.
  • RRC Radio Resource Control
  • the software architecture 300 may include additional Layer 3 sublayers, as well as various upper layers above Layer 3.
  • the RRC sublayer 313 may provide functions including broadcasting system information, paging, and establishing and releasing an RRC signaling connection between the wireless device 320 and the base station 350.
  • the PDCP sublayer 312 may provide uplink functions including multiplexing between different Radio bearers and logical channels, sequence number addition, handover data handling, integrity protection, ciphering, and header compression.
  • the PDCP sublayer 312 may provide functions that include in-sequence delivery of data packets, duplicate data Packet detection, integrity validation, deciphering, and header decompression.
  • the RLC sublayer 310 may provide segmentation and concatenation of upper layer data packets, retransmission of lost data packets, and Automatic Repeat Request (ARQ) .
  • ARQ Automatic Repeat Request
  • the RLC sublayer 310 functions may include reordering of data packets to compensate for out-of-order reception, reassembly of upper layer data packets, and ARQ.
  • MAC sublayer 308 may provide functions including multiplexing between logical and transport channels, random access procedure, logical channel priority, and hybrid-ARQ (HARQ) operations.
  • the MAC layer functions may include channel mapping within a cell, de-multiplexing, discontinuous reception (DRX) , and HARQ operations.
  • the software architecture 300 may provide functions to transmit data through physical media
  • the software architecture 300 may further include at least one host layer 314 to provide data transfer services to various applications in the wireless device 320.
  • application-specific functions provided by the at least one host layer 314 may provide an interface between the software architecture and the general purpose processor 206.
  • the software architecture 300 may include one or more higher logical layer (e.g., transport, session, presentation, application, etc. ) that provide host layer functions.
  • the software architecture 300 may include a network layer (e.g., IP layer) in which a logical connection terminates at a PDN gateway (PGW) .
  • PGW PDN gateway
  • the software architecture 300 may include an application layer in which a logical connection terminates at another device (e.g., end user device, server, etc. ) .
  • the software architecture 300 may further include in the AS 304 a hardware interface 316 between the physical layer 306 and the communication hardware (e.g., one or more RF transceivers) .
  • FIG. 4 is a component block diagram illustrating a communication system 400 configured for wireless communication in accordance with various embodiments.
  • the communication system 400 may include one or more wireless devices 120 and one or more base stations 110 forming a wireless communication network 424, which may provide connections to external resources 422.
  • External resources 422 may include sources of information outside of system 400, external entities participating with the system 400, and/or other resources.
  • a wireless device 120 may be configured by machine-readable instructions 406.
  • Machine-readable instructions 406 may include one or more instruction modules.
  • the instruction modules may include computer program modules.
  • the instruction modules may include one or more of loss detection module 408, determination module 410, framework trigger module 412, request sending module 414, message receiving module 416, deactivation module 418, service request sending module 420, and/or other instruction modules.
  • a loss detection module 408 may be configured to detect loss of a data connection with a network supported by the first SIM.
  • the first SIM may be a selected as the DDS.
  • a determination module 410 may be configured to determine whether the loss of the data connection was caused by use of an IMS service in a network supported by the second SIM.
  • the data connection with the network supported by the first SIM may be, for example, one or more bearer (e.g., EPS bearer or 5G bearer) with a PDN, a packet data unit (PDU) session with a PDN, or the like.
  • Determining whether the loss of the data connection was caused by use of an IMS service in the network supported by the second SIM may include determining whether the loss was preceded by termination of an active communication provided by the IMS service.
  • the IMS service in the network supported by the second SIM may be voice-over-LTE (VoLTE) or voice-over-NR (VoNR) .
  • a framework trigger module 412 may be configured to trigger a telephony framework to reestablish without delay the data connection with the network supported by the first SIM in response to determining that the loss of the data connection was caused by use of the IMS service in the network supported by the second SIM.
  • Triggering the telephony framework to reestablish without delay the data connection with the network supported by the first SIM may include generating an error code that is reported to an application processor.
  • Triggering the telephony framework to reestablish without delay the data connection with the network supported by the first SIM may include passing an indication to the telephony framework that causes an immediate PDN connectivity request or PDU session establishment request to be sent.
  • Triggering the telephony framework to immediately reestablish the data connection with the network supported by the first SIM may include passing an indication to the telephony framework that causes sending an immediate PDU session establishment request to first network.
  • a request sending module 414 may be configured to send a service request to the network supported by the first SIM.
  • a message receiving module 416 may be configured to receive a message from the network supported by the first SIM reporting release of the one or more bearer (e.g., EPS bearer) , or release of a PDU session.
  • the message may be an RRC message, such as an RRC reconfiguration or RRC connection reconfiguration message, depending on the RAT of the network supported by the first SIM.
  • a deactivation module 418 may be configured to locally deactivate the one or more corresponding bearer (e.g., EPS bearer) or delete the context of the corresponding PDU session in response to receiving the RRC message.
  • a bearer e.g., EPS bearer
  • a service request sending module 420 may be configured to send a service request to the network supported by the first SIM.
  • the wireless device 120, remote platform (s) 110, and/or external resources 422 may be operatively linked via one or more electronic communication links of the wireless communication network.
  • the wireless communication network may establish links via a network such as the Internet and/or other networks.
  • the wireless device 120 may include electronic storage 424, one or more processors 426, one or more wireless transceivers 266, and/or other components.
  • the wireless device 120 may include communication lines, or ports to enable the exchange of information with a network and/or other wireless devices.
  • the illustration of wireless device 120 is not intended to be limiting.
  • the wireless device 120 may include a plurality of hardware, software, and/or firmware components operating together to provide the functionality attributed herein to wireless device 120.
  • wireless device 120 may be implemented by a cloud of wireless devices operating together as wireless device 120.
  • Electronic storage 424 may include non-transitory storage media that electronically stores information.
  • the electronic storage media of electronic storage 424 may include one or both of system storage that is provided integrally (i.e., substantially non-removable) with wireless device 120 and/or removable storage that is removably connectable to wireless device 120 via, for example, a port (e.g., a universal serial bus (USB) port, a firewire port, etc. ) or a drive (e.g., a disk drive, etc. ) .
  • Electronic storage 424 may include one or more of optically readable storage media (e.g., optical disks, etc. ) , magnetically readable storage media (e.g., magnetic tape, magnetic hard drive, floppy drive, etc.
  • Electronic storage 424 may include one or more virtual storage resources (e.g., cloud storage, a virtual private network, and/or other virtual storage resources) .
  • Electronic storage 424 may store software algorithms, information determined by processor (s) 426, information received from wireless device 120, information received from remote platform (s) 110, and/or other information that enables wireless device 120 to function as described herein.
  • the processor (s) 426 may be configured to provide information processing capabilities in wireless device 120.
  • the processor (s) 426 may include one or more of a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and/or other mechanisms for electronically processing information.
  • the processor (s) 426 is illustrated as a single entity, this is for illustrative purposes only.
  • the processor (s) 426 may include a plurality of processing units and/or processor cores. The processing units may be physically located within the same device, or processor (s) 426 may represent processing functionality of a plurality of devices operating in coordination.
  • the processor (s) 426 may be configured to execute modules 408, 410, 412, 414, 416, 418, and/or 420 and/or other modules by software; hardware; firmware; some combination of software, hardware, and/or firmware; and/or other mechanisms for configuring processing capabilities on processor (s) 426.
  • the term “module” may refer to any component or set of components that perform the functionality attributed to the module. This may include one or more physical processors during execution of processor readable instructions, the processor readable instructions, circuitry, hardware, storage media, or any other components.
  • modules 408, 410, 412, 414, 416, 418, and/or 420 are illustrated as being implemented within a single processing unit, in embodiments in which the processor (s) 426 includes multiple processing units and/or processor cores, one or more of modules 408, 410, 412, 414, 416, 418, and/or 420 may be implemented remotely from the other modules.
  • the description of the functionality provided by the different modules 408, 410, 412, 414, 416, 418, and/or 420 described below is for illustrative purposes, and is not intended to be limiting, as any of modules 408, 410, 412, 414, 416, 418, and/or 420 may provide more or less functionality than is described.
  • one or more of the modules 408, 410, 412, 414, 416, 418, and/or 420 may be eliminated, and some or all of its functionality may be provided by other modules 408, 410, 412, 414, 416, 418, and/or 420.
  • the processor (s) 426 may be configured to execute one or more additional modules that may perform some or all of the functionality attributed below to one of the modules 408, 410, 412, 414, 416, 418, and/or 420.
  • the processor 426 may implement a telephony framework to provide the wireless device with telephony functionalities, such as voice call, video call, SMS, MMS, data service, network management, and others.
  • a telephony framework serves to expose APIs for the high-level telephony applications and communicate with below layers.
  • the telephony framework for Android includes components such as Service State Tracker (SST) , GsmCdmaCallTracker, Data Connection Tracker (DCT) , SIM toolkit.
  • SST Service State Tracker
  • DCT Data Connection Tracker
  • SIM toolkit SIM toolkit.
  • ATEL also provides services such as voice services (mobile originating (MO) , mobile terminating (MT) , call forwarding, call hold, three-way call, SMS , MMS, voice mail, network access services (NAS-voice, data and bearer registration ) , SIM services , device management service (DMS) , phone book manager (PBM) and IMS service.
  • voice services mobile originating (MO) , mobile terminating (MT)
  • MT mobile terminating
  • call forwarding call hold, three-way call
  • SMS mobile terminating
  • MMS voice mail
  • NAS-voice network access services
  • PBM phone book manager
  • IMS IMS service
  • the data connection on a DDS SIM may be lost due to an extended voice or other communication on a non-DDS SIM that requires exclusive of a shared radio resource. That is, the network associated with the DDS SIM may release resources allocated to the wireless device, including radio bearers in the user plane and signaling connections in the control plane connection.
  • the wireless device may try to resume data service on the DDS SIM by sending a service request message to the network.
  • the network may have released network resources assigned to the wireless device, including radio bearers and signaling connections.
  • the network associated with the DDS SIM may send a message (e.g., RRC signaling, such as an RRC connection reconfiguration or RRC reconfiguration message) to the wireless device that indicates that no connection is established with the internet PDN (e.g., no bearer or PDU session) .
  • the wireless device may locally deactivate the bearer context or delete the context of the PDU session for the internet PDN.
  • An indication of the data connection termination may be generated and passed to the telephony framework, which may automatically start a back-off timer.
  • Such back-off timer may be configured to avoid frequent data call setup when there are temporary network issues, and the wireless device may not attempt to reestablish the data call on the DDS SIM until its expiration.
  • ATEL may employ a back-off timer that has a duration of 10 seconds.
  • the use of the back-off timer is unnecessary, and only introduces delay.
  • the various embodiments provide a mechanism for avoiding use of the back-off timer by the telephony framework if the loss of a data connection on the DDS SIM is due to extended use of the radio resource for a voice call or other communication on a non-DDS SIM.
  • the wireless device may attempt to immediately reestablish the data communication with the network associated with the DDS.
  • FIG. 5 is a process flow diagram illustrating a method 500 that may be performed by a processor of a wireless device for managing data call recovery on a MSMS device in which at least two SIMs are associated with a shared RF resource.
  • the method 500 may be implemented by a processor (such as 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (such as the wireless device 120a-120e, 200, 320, 120) .
  • the processor may perform operations including detecting loss of a data connection with a network supported by a first SIM.
  • the first SIM may be configured as a DDS on the wireless device.
  • Means for performing functions of the operations in block 502 may include the processor (e.g., 210, 212, 214, 216, 218, 252, 260, 426) coupled to a wireless transceiver (e.g., 256) .
  • the processor may perform operations including determining whether the loss of the data connection was caused by use of an IMS service in a network supported by a second SIM. For example, in various embodiments, determining whether the loss of the data connection was caused by use of an IMS service in the network supported by the second SIM may be performed by determining whether the loss was preceded by termination of an active communication provided by the IMS service. In particular, the wireless device may determine whether a voice call on the second SIM recently ended. Means for performing functions of the operations in block 504 may include the processor (e.g., 210, 212, 214, 216, 218, 252, 260, 426) coupled to a wireless transceiver (e.g., 256) .
  • a wireless transceiver e.g., 256
  • the processor may perform operations including triggering a telephony framework to reestablish without delay the data connection with the network supported by the first SIM in block 506. For example, reestablishing the connection may involve sending a PDN connectivity request message to request setup of a default EPS bearer, or sending a PDU session establishment request message, depending on the network and device technology.
  • Means for performing functions of the operations in block 506 may include the processor (e.g., 210, 212, 214, 216, 218, 252, 260, 426) coupled to a wireless transceiver (e.g., 256) .
  • the processor may await expiration of a back-off timer that was automatically started by the telephony framework in block 508.
  • a back-off timer may be a 10 second timer employed by the telephony framework order to avoid repeated network communication failures.
  • Means for performing functions of the operations in block 508 may include the processor (e.g., 210, 212, 214, 216, 218, 252, 260, 426) .
  • the processor may reestablish a data connection with the network supported by the first SIM in block 510.
  • Means for performing functions of the operations in block 502 may include the processor (e.g., 210, 212, 214, 216, 218, 252, 260, 426) coupled to a wireless transceiver (e.g., 256) .
  • the network supported by the first SIM may have an access network and core network that employ the same generation of technology, such as a 4G system (e.g., EPC and LTE RAN) or a standalone (SA) -mode 5G system (e.g., 5G Core (5GC) and NR RAN) .
  • the network supported by the first SIM may integrate elements of different generations of technology in different configurations, such as combining multiple RATs connected to any of various core networks.
  • NR base stations e.g., NR gNBs
  • LTE base stations e.g., eNBs or enhanced eNBs (ng-eNBs)
  • the core network may be either the EPC or 5GC depending on the choice of operator.
  • FIG. 6 is a process flow diagram of an example method 600 that may be performed as part of the method 500 for managing data call recovery within a 4G system, or a non-standalone (NSA) -mode 5G system that uses the EPC.
  • the method 600 may be implemented by a processor (such as 212, 216, 252 or 260) of a wireless device (such as the wireless device 120a-120e, 200, 320) .
  • the method 600 may be performed in conjunction with the operations of methods 500 (FIG. 5) .
  • the operations of method 600 may be performed as part of the operations for detecting loss of a data connection with the network supported by the first SIM in block 502 (FIG. 5) .
  • the processor may perform operations including sending a serviced request to the network supported by the first SIM.
  • the processor may perform operations including receiving a message from the network supported by the first SIM reporting release of network resources allocated to the wireless device, including any EPS bearer with the internet PDN.
  • the message received may be an RRC connection reconfiguration message.
  • the processor may locally deactivate the released EPS bearer (s) , which may be reported by the processor to the telephony framework.
  • the processor may then perform operations of block 504 of the method 500 as described.
  • FIG. 7 is a process flow diagram of an example method 700 that may be performed as part of the method 500 for managing data call recovery within a SA-mode 5G system, or in an NSA-mode 5G system that uses the 5GC.
  • the method 700 may be implemented by a processor (such as 212, 216, 252 or 260) of a wireless device (such as the wireless device 120a-120e, 200, 320) .
  • the method 700 may be performed in conjunction with the operations of methods 500 (FIG. 5) .
  • the operations of method 700 may be performed as part of the operations for detecting loss of a data connection with the network supported by the first SIM in block 502 (FIG. 5) .
  • the processor may perform operations including sending a service request to the network supported by the first SIM.
  • the processor may perform operations including receiving a message from the network supported by the first SIM reporting release of a PDU session with the internet PDN.
  • the message received may be an RRC reconfiguration message.
  • the processor may locally delete the context of the released PDU session, which may be reported by the processor to the telephony framework.
  • the processor may then perform operations of block 504 of the method 500 as described.
  • FIG. 8 is a component block diagram of a network computing device 800 suitable for use with various embodiments.
  • Such network computing devices may include at least the components illustrated in FIG. 8.
  • the network computing device 800 may include a processor 801 coupled to volatile memory 802 and a large capacity nonvolatile memory, such as a disk drive 803.
  • the network computing device 800 may also include a peripheral memory access device such as a floppy disc drive, compact disc (CD) or digital video disc (DVD) drive 806 coupled to the processor 801.
  • the network computing device 800 may also include network access ports 804 (or interfaces) coupled to the processor 801 for establishing data connections with a network, such as the Internet and/or a local area network coupled to other system computers and servers.
  • a network such as the Internet and/or a local area network coupled to other system computers and servers.
  • the network computing device 800 may include one or more antennas 807 for sending and receiving electromagnetic radiation that may be connected to a wireless communication link.
  • the network computing device 800 may include additional access ports, such as USB, Firewire, Thunderbolt, and the like for coupling to peripherals, external memory, or other devices.
  • FIG. 9 is a component block diagram of a wireless device 900 suitable for use with various embodiments.
  • various embodiments may be implemented on a variety of wireless devices 800 (e.g., the wireless device 120a-120e, 200, 320, 120) , an example of which is illustrated in FIG. 8 in the form of a smartphone.
  • the wireless device 900 may include a first SOC 202 (e.g., a SOC-CPU) coupled to a second SOC 204 (e.g., a 5G capable SOC) .
  • the first and second SOCs 202, 204 may be coupled to internal memory 424, 916, a display 912, and to a speaker 914.
  • the wireless device 900 may include an antenna 904 for sending and receiving electromagnetic radiation that may be connected to a wireless transceiver 266 coupled to one or more processors in the first and/or second SOCs 202, 204.
  • the wireless device 900 may also include menu selection buttons or rocker switches 920 for receiving user inputs.
  • the wireless device 900 also includes a sound encoding/decoding (CODEC) circuit 910, which digitizes sound received from a microphone into data packets suitable for wireless transmission and decodes received sound data packets to generate analog signals that are provided to the speaker to generate sound.
  • CODEC sound encoding/decoding
  • one or more of the processors in the first and second SOCs 202, 204, wireless transceiver 266 and CODEC 910 may include a digital signal processor (DSP) circuit (not shown separately) .
  • DSP digital signal processor
  • the processors of the wireless network computing device 800 and the wireless device 900 may be any programmable microprocessor, microcomputer or multiple processor chip or chips that can be configured by software instructions (applications) to perform a variety of functions, including the functions of the various embodiments described below.
  • multiple processors may be provided, such as one processor within an SOC 204 dedicated to wireless communication functions and one processor within an SOC 202 dedicated to running other applications.
  • Software applications may be stored in the memory 424, 916 before they are accessed and loaded into the processor.
  • the processors may include internal memory sufficient to store the application software instructions.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a wireless device and the wireless device may be referred to as a component.
  • One or more components may reside within a process and/or thread of execution and a component may be localized on one processor or core and/or distributed between two or more processors or cores. In addition, these components may execute from various non-transitory computer readable media having various instructions and/or data structures stored thereon. Components may communicate by way of local and/or remote processes, function or procedure calls, electronic signals, data packets, memory read/writes, and other known network, computer, processor, and/or process related communication methodologies.
  • Such services and standards include, e.g., third generation partnership project (3GPP) , LTE systems, third generation wireless mobile communication technology (3G) , fourth generation wireless mobile communication technology (4G) , fifth generation wireless mobile communication technology (5G) , global system for mobile communications (GSM) , universal mobile telecommunications system (UMTS) , 3GSM, general Packet Radio service (GPRS) , code division multiple access (CDMA) systems (e.g., cdmaOne, CDMA1020TM) , enhanced data rates for GSM evolution (EDGE) , advanced mobile phone system (AMPS) , digital AMPS (IS-136/TDMA) , evolution-data optimized (EV-DO) , digital enhanced cordless telecommunications (DECT) , Worldwide Interoperability for Microwave Access (WiMAX) , wireless local area network (WLAN) , Wi-
  • 3GPP third generation wireless mobile communication technology
  • 4G fourth generation wireless mobile communication technology
  • 5G fifth generation wireless mobile communication technology
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of receiver smart objects, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Alternatively, some operations or methods may be performed by circuitry that is specific to a given function.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or code on a non-transitory computer-readable storage medium or non-transitory processor-readable storage medium.
  • the operations of a method or algorithm disclosed herein may be embodied in a processor-executable software module or processor-executable instructions, which may reside on a non-transitory computer-readable or processor-readable storage medium.
  • Non-transitory computer-readable or processor-readable storage media may be any storage media that may be accessed by a computer or a processor.
  • non-transitory computer-readable or processor-readable storage media may include RAM, ROM, EEPROM, FLASH memory, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage smart objects, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer.
  • Disk and disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of non-transitory computer-readable and processor-readable media.
  • the operations of a method or algorithm may reside as one or any combination or set of codes and/or instructions on a non-transitory processor-readable storage medium and/or computer-readable storage medium, which may be incorporated into a computer program product.

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

Abstract

Des exemples de l'invention concernent des systèmes et des procédés pour gérer une communication sans fil sur un dispositif sans fil multi-SIM multi-veille (MSMS). Un processeur du dispositif sans fil peut détecter une perte d'une connexion de données avec un réseau supporté par un premier SIM. Le processeur peut déterminer si la perte de la connexion de données a été provoquée par l'utilisation d'un service de sous-système multimédia IP (IMS) dans un réseau supporté par le second SIM. En réponse à la détermination du fait que la perte de la connexion de données a été provoquée par l'utilisation d'un service IMS dans le réseau supporté par le second SIM, le processeur peut amener un cadre de téléphonie à rétablir sans retard la connexion de données avec le réseau supporté par le premier SIM.
PCT/CN2020/078113 2020-03-06 2020-03-06 Appareil et procédé pour récupérer rapidement un service à commutation de paquets (ps) après une fin d'appel d'abonnement à des données non par défaut (dds) WO2021174514A1 (fr)

Priority Applications (1)

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PCT/CN2020/078113 WO2021174514A1 (fr) 2020-03-06 2020-03-06 Appareil et procédé pour récupérer rapidement un service à commutation de paquets (ps) après une fin d'appel d'abonnement à des données non par défaut (dds)

Applications Claiming Priority (1)

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PCT/CN2020/078113 WO2021174514A1 (fr) 2020-03-06 2020-03-06 Appareil et procédé pour récupérer rapidement un service à commutation de paquets (ps) après une fin d'appel d'abonnement à des données non par défaut (dds)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014000650A1 (fr) * 2012-06-27 2014-01-03 Mediatek Inc. Procédure d'amélioration de mise en pause et de reprise de données d'ue dans des réseaux de communication mobile
US20140220992A1 (en) * 2013-02-01 2014-08-07 Intel Mobile Communication GmbH Communication network component, communication devices, method for transmitting data and methods for data communication
US20150079985A1 (en) * 2013-09-13 2015-03-19 Qualcomm Incorporated Out-Of-Service Recovery for a Multi-SIM Wireless device
US20180063880A1 (en) * 2016-09-01 2018-03-01 Qualcomm Incorporated Fast return to embms service after lte goes oos in ss and dsds phones

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014000650A1 (fr) * 2012-06-27 2014-01-03 Mediatek Inc. Procédure d'amélioration de mise en pause et de reprise de données d'ue dans des réseaux de communication mobile
US20140220992A1 (en) * 2013-02-01 2014-08-07 Intel Mobile Communication GmbH Communication network component, communication devices, method for transmitting data and methods for data communication
US20150079985A1 (en) * 2013-09-13 2015-03-19 Qualcomm Incorporated Out-Of-Service Recovery for a Multi-SIM Wireless device
US20180063880A1 (en) * 2016-09-01 2018-03-01 Qualcomm Incorporated Fast return to embms service after lte goes oos in ss and dsds phones

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