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WO2016167881A1 - Sélection dynamique d'une technologie pour une réception de diffusion cellulaire dans des dispositifs de communication à multiples modules d'identité d'abonné (sim) - Google Patents

Sélection dynamique d'une technologie pour une réception de diffusion cellulaire dans des dispositifs de communication à multiples modules d'identité d'abonné (sim) Download PDF

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Publication number
WO2016167881A1
WO2016167881A1 PCT/US2016/019256 US2016019256W WO2016167881A1 WO 2016167881 A1 WO2016167881 A1 WO 2016167881A1 US 2016019256 W US2016019256 W US 2016019256W WO 2016167881 A1 WO2016167881 A1 WO 2016167881A1
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WO
WIPO (PCT)
Prior art keywords
radio access
access technology
processor
threshold
cell broadcasts
Prior art date
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Ceased
Application number
PCT/US2016/019256
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English (en)
Inventor
Francis Ming-Meng Ngai
Anand RAJURKAR
Soumen MITRA
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Qualcomm Inc
Original Assignee
Qualcomm Inc
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Filing date
Publication date
Priority claimed from US14/832,123 external-priority patent/US20160309407A1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of WO2016167881A1 publication Critical patent/WO2016167881A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • 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

  • SPM Subscriber Identity Module
  • GSM Global System for Mobility
  • LTE Long Term Evolution
  • CDMA Code Division Multiple Access
  • a mobile communication device that includes one or more SEVIs and connects to two or more separate mobile telephony networks using one or more shared radio frequency (RF) resources/radios is termed a multi-SEVI communication device.
  • RF radio frequency
  • One example is a multi-SPM-multi-standby (MSMS) communication device, which includes two or more SEVI cards/subscriptions that are each associated with a separate radio access technology (RAT), and the separate RATs share one RF chain to communicate with two or more separate mobile telephony networks on behalf of each RAT's respective subscription.
  • MSMS multi-SPM-multi-standby
  • multi-SPM communication devices may be configured or may be required to be configured to receive Emergency Alerts, Cell Broadcasts for each technology supported by the multi-SEVI communication device (e.g., each SEVI subscription).
  • Examples of specific Cell Broadcast Service standards are set forth by European Telecommunications Standards mstitute (ETSI) and are incorporated into the GSM standard (e.g., 3GPP TS 23.041 for GSM, Universal Mobile Telecommunication System (UMTS), and 3 GPP TS 23.401 for LTE).
  • Cell Broadcasts include: EU (European Union) Alert in the European/European Union region; Commercial Mobile Alert Services (CMAS) in the US; Rocket Alert "Meser Ishi” in Israel; and Earthquake and Tsunami Warning System (ETWS) in Japan.
  • EU European Union
  • CMAS Commercial Mobile Alert Services
  • Rocket Alert "Meser Ishi” in Israel
  • EWS Earthquake and Tsunami Warning System
  • Various embodiments include methods and devices for implementing the methods for managing reception of cell broadcasts on a mobile communication device, such as a multi-subscriber interface module (SIM) communication device supporting a first subscription of a first radio access technology and a second subscription of a second radio access technology.
  • SIM multi-subscriber interface module
  • Methods may include measuring a channel condition for each of the first radio access technology and the second radio access technologies during a measurement period, determining whether the measured channel condition of the first radio access technology is greater than or equal to a threshold for receiving cell broadcasts, determining whether the measured channel condition of the second radio access technology is greater than or equal to the threshold for receiving cell broadcasts in response to determining that the measured channel condition of the first radio access technology is less than a the threshold for receiving cell broadcasts, designating the second radio access technology to receive cell broadcasts during an interval T, such as a hysteresis interval, and disabling cell broadcast reception on the first radio access technology during the interval in response to determining that the measured channel condition of the second radio access technology is greater than or equal to the threshold for receiving cell broadcasts.
  • T such as a hysteresis interval
  • Some embodiments may further include determining whether the mobile communication device is in a Voice/Data call mode using the second radio access technology.
  • designating the second radio access technology to receive cell broadcasts during an interval and disabling cell broadcast reception on the first radio access technology during the interval may be performed in response to determining that the measured channel condition of the second radio access technology is greater than or equal to the threshold for receiving cell broadcasts and that the mobile communication device is not in a Voice/Data call mode using the second radio access technology .
  • Some embodiments may further include designating the first radio access technology to receive cell broadcasts during the interval and disabling cell broadcast reception on the second radio access technology during the interval in response to
  • Some embodiments may further include designating the first radio access technology to receive cell broadcasts during the interval and disabling cell broadcast reception on the second radio access technology during the interval in response to
  • Some embodiments may further include designating the first radio access technology to receive cell broadcasts during the interval and disabling cell broadcast reception on the second radio access technology during the interval in response to determining that the measured channel condition of the first radio access technology is greater than or equal to the threshold for receiving cell broadcasts.
  • Some embodiments may further include determining whether the mobile communication device is in a Voice/Data call mode using the first radio access technology.
  • designating the first radio access technology to receive cell broadcasts during an interval and disabling cell broadcast reception on the second radio access technology during the interval may be performed in response to determining that the measured channel condition of the first radio access technology is greater than or equal to the threshold for receiving cell broadcasts and that the mobile communication device is not in a Voice/Data call mode using the first radio access technology.
  • Some embodiments may further include remeasuring channel conditions for the first and second radio access technologies after the interval and redesignating one of the first and second radio access technologies to receive cell broadcasts based on the remeasured channel conditions.
  • Some embodiments may further include establishing the threshold for receiving cell broadcasts by measuring a signal received on a channel associated with receiving the cell broadcasts. Some embodiments may further include establishing a first threshold for receiving cell broadcasts on the first radio access technology and establishing a second threshold for receiving cell broadcasts on the second radio access technology.
  • determining whether the measured channel condition of the first radio access technology is greater than or equal to a threshold for receiving cell broadcasts may include determining whether the measured channel condition of the first radio access technology is greater than or equal to the first threshold for receiving cell broadcasts, and determining whether the measured channel condition of the second radio access technology is greater than or equal to the threshold for receiving cell broadcasts may include determining whether the measured channel condition of the second radio access technology is greater than or equal to the second threshold for receiving cell broadcasts.
  • Various embodiments include a multi-SEVI communication device configured to receive a first SIM card for a first subscription to a first radio access technology, and a second SIM card for a second subscription to a second radio access technology, and having a shared radio-frequency (RF) chain, a memory, and a processor configured with processor-executable instructions to perform operations of the methods described above.
  • Various embodiments include a multi-SFM communication device having means for performing functions of the methods described above.
  • Various embodiments include a non-transitory processor-readable storage medium on which is stored processor-executable instructions configured cause a processor of a multi-SFM communication device to perform operations of the methods described above.
  • FIG. 1 A is a communication system block diagram illustrating mobile telephony networks suitable for use with various embodiments.
  • FIG. IB is a communication system block diagram illustrating mobile telephony networks and Emergency Alert/Cellular Broadcast System networks suitable for use with various embodiments.
  • FIG. 2A is a component block diagram illustrating a multi-SIM multi-standby communication device according to various embodiments.
  • FIG. 2B is a component block diagram illustrating a multi-SF multi-active communication device according to various embodiments.
  • FIG. 3 is a diagram illustrating a mobile device configured to receive redundant Cell Broadcasts on two active technologies ("Tech x " and "Tech Y ”) in accordance with various embodiments.
  • FIG. 4A is a diagram illustrating a mobile device configured to receive Cell Broadcasts on technology Tech x and blocking a Cell Broadcast when Tech x is in a call mode in accordance with various embodiments.
  • FIG. 4B is a diagram illustrating a mobile device configured to receive Cell Broadcasts on technology Tech x and missing a Cell Broadcast when technology Tech x is in an active mode during poor channel conditions.
  • FIG. 5A is a graph illustrating channel conditions over time for both technologies ("Tech x " and "Tech Y ”) during measurement intervals and hysteresis intervals according to various embodiments.
  • FIG. 5B is a graph illustrating measurement and comparison of channel conditions for both technologies ("Tech x " and "Tech Y ”) to thresholds during measurement intervals and designation of technologies for reception of Cell Broadcasts during hysteresis intervals in accordance with various embodiments.
  • FIG. 6A is a process flow diagram illustrating a method for performing operations to configure technologies for Cell Broadcast reception in accordance with various
  • FIG. 6B is a process flow diagram further illustrating a method for performing operations to configure technologies for Cell Broadcast reception during measurement and hysteresis intervals in accordance with various embodiments.
  • FIG. 6C is a process flow diagram further illustrating a method for performing operations to configure technologies for Cell Broadcast reception during measurement and hysteresis intervals in accordance with various embodiments.
  • FIG. 7 is a component block diagram of a mobile communication device suitable for implementing various embodiments.
  • multi-SFM communication device refers to any one, some or all of devices including cellular telephones, smart phones, personal or mobile multimedia players, personal data assistants, laptop computers, tablet computers, smart books, palm-top computers, wireless electronic mail receivers, multimedia Internet-enabled cellular telephones, wireless gaming controllers, and similar personal electronic devices that includes a capability for two or more SFM cards, a programmable processor, memory, and circuitry for connecting to at least two mobile communication network with one or more shared RF resources.
  • Various embodiments may be useful in mobile communication devices, such as smart phones and such devices are referred to in the descriptions of various embodiments.
  • Multi-SFM communication devices may be configured to operate in "multi-SFM, multi-standby” (MSMS) mode, “multi- SEVI multi-active” (MSMA), “dual-SFM dual standby” (DSDS), “dual-SFM, dual-active,” (DSD A), etc.
  • MSMS multi-standby
  • MSMA multi- SEVI multi-active
  • DSDS dual-SFM dual standby
  • DSD A dual-SFM, dual-active
  • SFM Session Management Function
  • SFM card Session Management module
  • subscriber identification module refers to a memory that may be an integrated circuit or embedded into a removable card, and that stores an International Mobile Subscriber Identity (FMSI), related key, and/or other information used to identify and/or authenticate a multi- standby communication device on a network and enable a communication service with the network.
  • FMSI International Mobile Subscriber Identity
  • the term "subscription" is used herein as a shorthand reference to refer 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.
  • a dual-SFM device may support both WCDMA and GSM technologies, or both RATs may support WCDMA technology.
  • the dual-SFM mobile communication may be configured as a dual-SFM dual-standby (DSDS) device, meaning that both RATs share one RF resource and only one RAT may be active at any one time, with the other RAT in the idle mode.
  • DSDS dual-SFM dual-standby
  • MSMS multi-SFM multi-standby
  • both RATs may be active at the same time.
  • the terms "TechX” and "TechY” are used to refer in general to two different RATs (e.g., WCDMA and GSM), which may be RATs associated with different service providers associated with the SFM subscriptions. Such service providers may use the different RATs or may use different implementations of the same RAT.
  • Various embodiments may not be dependent on the specific type of technology.
  • a multi-SFM communication device is configured such that multiple subscriptions (e.g., associated with multiple SFMs) will receive Cell Broadcast information at the same time, a power penalty may be incurred as both technologies need to stay active for Cell Broadcast reception.
  • Voice or data communications performance may also be affected if the corresponding technology is in a connected mode, as the technology has to be suspended while the Cell Broadcast is received. For example, in UMTS and Long Term Evolution (LTE) systems, CMAS reception is allowed in the connected mode.
  • UMTS and Long Term Evolution (LTE) systems CMAS reception is allowed in the connected mode.
  • the multi-SFM communication device may miss the Cell Broadcast alert completely when the multi-SEVI communication device is connected or on a call with the designated technology. Alternatively or additionally, if the designated technology is experiencing poor channel condition, then Cell Broadcast or Cell Broadcast update may also be missed.
  • CMAS reception is not allowed while the multi-SIM communication device is in a voice call or in a connected mode (e.g., data connectivity mode).
  • a connected mode e.g., data connectivity mode
  • the CMAS message through GSM can't be received while in Voice call or in data connectivity.
  • the Cell Broadcast or Cell Broadcast update may be missed if Cell Broadcast reception is designated to a single RAT, say Tech x , and that RAT is in very poor channel condition/OOS.
  • Cell Broadcast/Cell Information (CI) messaging (also known as Short Message Service-Cell Broadcast (SMS-CB)) is a service that enables simultaneous delivery of important messages to multiple users in a specified area.
  • Cell Broadcast is a one-to-many geographically focused messaging service that is supported by many technologies throughout the world. Cell Broadcast messaging may be used for nation-wide, city-wide, and/or locality- wide alerting, such as providing weather reports, mass messaging, location-based news, emergency alters, and other information.
  • the Cell Broadcast standards define a text or binary message that can be distributed to all mobile terminals connected to a set of cells in a given area. Cell Broadcast messages are generally provided on an unconfirmed push basis.
  • Cell Broadcast services are configured to be impervious to traffic load such that Cell Broadcast messages may be effectively sent and received during disaster situations (e.g., when traffic load peaks are experienced).
  • Cell Broadcast services may be used to provide disaster or emergency information, organize emergency or disaster relief efforts, warn of further disaster or emergency events, provide evacuation route information or updates, and so on.
  • a Cell Broadcast may be originated from a Cell Broadcast Centre (CBC), which, depending on the RAT, may be connected to a base station controller (BSC) in GSM networks, and a radio network controller (RNC) in UMTS networks via standardized interfaces, such as using TCP/IP.
  • CBC Cell Broadcast Centre
  • BSC base station controller
  • RNC radio network controller
  • the Cell Broadcast messages are generally transmitted with a list of destination cells and other information, such as a requested frequency for repetition, the number of times the messages will be transmitted from the originating node, and other information.
  • the Cell Broadcast messages are then transmitted to base stations, NodeBs, etc., which are responsible for handling the cells designated by the originator.
  • Multi-SEVI communication devices may be configured to receive Cell Broadcasts (e.g., EU Alert/CMAS/ETWS) for each technology supported by the multi-SIM
  • Cell Broadcasts e.g., EU Alert/CMAS/ETWS
  • Cell Broadcasts are defined by European Telecommunications Standards Institute (ETSI) and are incorporated into the GSM standard, (e.g., 3 GPP TS 23.041 for GSM, UMTS, and 3 GPP TS 23.401 for LTE).
  • ETSI European Telecommunications Standards Institute
  • GSM Global System for Mobile communications
  • Cell Broadcasts may be used for a variety of messaging purposes where messages having geographical significance may be required to be broadcast to devices within certain areas covered by a cell or cells that serve a geographic area.
  • a multi-SIM communication device may be configured to take link quality measurements for each technology (e.g., Tech x and Tech Y ) over a measurement period T ME AS-
  • a threshold value e.g., a minimum link quality sufficient to ensure reception of the Cell Broadcast
  • Tech Y may be designated to receive Cell Broadcast message during an interval "T HY S T ,” after which the process may be repeated.
  • the link quality thresholds for Cell Broadcast reception may be the same or different from link quality levels that may be acceptable or sufficient for signal reception on other channels or for other traffic.
  • the Cell broadcast link quality thresholds may only be relevant to reception of Cell Broadcasts.
  • the signal conditions that are sufficient to ensure successful reception of Cell Broadcasts may be different (e.g., lower or higher) than the signal conditions required for the successful reception of other traffic, whether on the same channel or a different channel.
  • Receiving Cell Broadcasts on just one technology can reduce power consumption. Selection of that technology may depend on the signal strength of signals received on the technologies. The signal strength of each technology may be compared to a threshold that is common for each of the technologies, or to a technology-specific threshold. The received signal strength in the technology selected to receive Cell Broadcast should be greater than (or equal to) the threshold value, as well as greater than received signal strength of the other technology. Additionally, the technology selected to receive Cell Broadcast should not be in a Voice/Data mode in which Cell Broadcast reception cannot be supported.
  • Various embodiments provide efficiency benefits. For dual receiver-DSDS/DSDA (or MSMS/MSMA) implementations, during intervals when Tech x is in either an idle mode or an offline mode (e.g., not active), Cell Broadcast reception exclusively on Tech Y saves power in the UE. During intervals when Tech x is in the connected mode for a voice call or data communication session, the active communication session is not affected (e.g., will not be blocked) and modem performance is improved as any Cell Broadcast reception that may be necessary is directed to a single dedicated technology (e.g., Tech Y ). Because Techy is designated for Cell Broadcast reception, voice/data calls on Techx may proceed uninterrupted as there is no need to service a Cell Broadcast message on Tech x . During intervals where Techx is in an idle mode, voice/data mobile terminating (MT) pages can be received without Cell Broadcast interference through Tech x , which improves the overall MT reception performance of the modem.
  • MT voice/data mobile terminating
  • a first mobile network 102 may include a first base station 130.
  • a second mobile network 104 may include a second base station 140.
  • the first mobile network 102 and the second mobile network 104 may each include a plurality of base stations.
  • a first multi-SEVI communication device 110 may be in communication with the first mobile network 102 through a cellular connection 132, such as to the first base station 130.
  • the first multi-SIM communication device 110 may also be in communication with the second mobile network 104 through a cellular connection 142 to the second base station 140.
  • the first base station 130 may be in communication with the first mobile network 102 over a connection 134, which may be a wired or wireless connection.
  • the second base station 140 may be in communication with the second mobile network 104 over a connection 144, which may be a wired or wireless connection.
  • a second multi-SIM communication device 120 may similarly communicate with the first mobile network 102 through the cellular connection 132 to the first base station 130.
  • the second multi-SIM communication device 120 may also communicate with the second mobile network 104 through the cellular connection 142 to the second base station 140.
  • the cellular connections 132 and 142 may be made through two- way wireless communication links established according to various communication technologies, such as 4G, 3G, CDMA, TDMA, WCDMA, GSM, and other mobile telephony communication technologies.
  • the multi-SIM communication devices 110, 120 may be connected to one or more of the first mobile network 102 and the second mobile network 104. In various embodiments,
  • the multi-SIM communication devices 110, 120 may include two (or more) SEVIs associated with respective subscriptions for the first mobile network 102 and the second mobile network 104.
  • the first multi-SIM communication device 110 may optionally establish a wireless connection 146 with a peripheral device 145 used in connection with the first multi-SIM communication device 110.
  • the first multi- SIM communication device 110 may communicate over a Bluetooth® link with a Bluetooth- enabled personal computing device (e.g., a "smart watch").
  • the first multi-SIM communication device 110 may optionally establish a wireless connection 162 with a wireless access point 160, such as over a Wi-Fi connection.
  • the wireless access point 160 may be configured to connect to the Internet 164 or another network over a wired connection 166.
  • the second multi-SFM communication device 120 may similarly be configured to connect with the peripheral device 145, the wireless access point 160 and/or other devices over wireless links or wired links.
  • the emergency alerts, broadcasts may be provided through a cell broadcast system or network 150.
  • the network 150 may include a series of geographically based terminals, such as terminals 151a, 151b, 151c.
  • One or more of the terminals may be associated with monitoring and providing alert relevant to a geographic area.
  • the terminal 151b may receive information regarding an event 153, which may be an emergency event, a weather event, earthquake event, tsunami event, child abduction emergency (CAE) (e.g., AMBER alert), etc. relevant to a geographical area 152.
  • CAE child abduction emergency
  • the terminal 151b may transmit an alert 154 through the network 150 to a cellular broadcast system 170.
  • the network 150 and the cellular broadcast system 170 may be implemented at least partially using the Internet 164 (see, FIG. 1 A).
  • Other portions of the network 150 and/or the cellular broadcast system 170 may be private networks, public/public switched telephone networks, service provider networks, or networks other than or in addition to the Internet 164.
  • the cellular broadcast system 170 may forward or otherwise transmit a an alert message 156a to the first mobile network 102, which may be configured according to a technology Tech x .
  • the cellular broadcast system 170 may forward or otherwise transmit an alert message 156b to the second mobile network 104, which may be configured according to a technology Tech Y .
  • the first mobile network 102 and the second mobile network 104 may have infrastructure elements such as a base station controller (BSC), radio network controller (RNC), NodeB, eNodeB, etc. with which to receive the alert messages 156a, 156b.
  • BSC base station controller
  • RNC radio network controller
  • NodeB NodeB
  • eNodeB eNodeB
  • the alert messages 156a, 156b may contain information such the geographic coverage are for transmitting Cell Broadcast messages, which includes geographic areas within the coverage area of the respective infrastructure element(s) relevant to the Cell Broadcast message. [0046]
  • the alert messages 156a 156b may be received, processed, and forwarded as Cell Broadcasts 157a, 157b to base stations 130, 140, which may transmit the Cell
  • the first multi-SIM communication device 110 may receive one or more of the Cell Broadcasts 157a, 157b periodically on the cellular connections 132, 142.
  • the alert may have been generated for an area other than the area in which a multi-SIM communication device is located.
  • the geographic area in which the multi-SIM communication device is located may nonetheless become subject to the warning.
  • an event may occur in a remote area (e.g., earthquake) that is not immediately relevant to the area in which the multi- SFM communication device is located.
  • a resulting tsunami may become relevant to the geographic area of the multi-SFM communication device even though remote from the original earthquake.
  • the multi-SFM communication device may receive a Cell
  • the tsunami -related Cell Broadcast may be generated locally based on separate tsunami warning systems.
  • FIGS. 2A and 2B are functional block diagram of multi-SFM communication devices suitable for implementing various embodiments.
  • FIG. 2A illustrates a dual-SFM dual standby (DSDS) device 200 in which a single baseband processor, modem and RF resources may be shared between two (or more) subscriptions.
  • FIG. 2B illustrates a dual-SFM dual active (DSDA) device 250, with a separate baseband processor, modem and RF resources for each of two or more subscriptions. Because DSDS and DSDA devices include similar components and provide similar functionality, differing primarily in the number of RF resources, FIGS 2A and 2B are described together.
  • a multi-SFM communication device 200 may include connections for receiving a first SFM interface 202a, which may receive a first identity module SFM-1 204a that is associated with a first subscription for a service provided using a first radio access technology, such as Tech x as described.
  • the multi-SFM may include connections for receiving a first SFM interface 202a, which may receive a first identity module SFM-1 204a that is associated with a first subscription for a service provided using a first radio access technology, such as Tech x as described.
  • communication device 200, 250 may also include connections for receiving a second SFM interface 202b, which may receive a second identity module SFM-2 204b that is associated with a second subscription for a service provided using a second radio access technology, such as Tech Y as discussed.
  • a second SFM interface 202b which may receive a second identity module SFM-2 204b that is associated with a second subscription for a service provided using a second radio access technology, such as Tech Y as discussed.
  • a SIM in various embodiments may be a Universal Integrated Circuit Card (UICC) that is configured with SIM and/or universal SIM (USEVI) applications, enabling access to, for example, GSM/GPRS, UMT S/W CDMA, and/or LTE networks.
  • the UICC may also provide storage for a contact list and other information and/or applications.
  • a SEVI may be a UICC removable user identity module (R-UIM) or a CDMA subscriber identity module (CSIM) on a card.
  • R-UIM UICC removable user identity module
  • CCM CDMA subscriber identity module
  • a SEVI card may have a CPU, ROM, RAM, EEPROM and I/O circuits.
  • a SEVI may contain user account information, an international mobile subscriber identity (EVISI), a set of SEVI application toolkit (SAT) commands, and storage space for phone book contacts.
  • EVISI international mobile subscriber identity
  • a SEVI card may further store home identifiers (e.g., a System Identification Number (SID)/Network Identification Number (NED) pair, a Home PLMN (HPLMN) code, etc.) to indicate the SEVI card network operator provider.
  • An Integrated Circuit Card Identity (ICCEO) SEVI serial number may be printed on the SEVI card for identification.
  • a SEVI may be implemented within a portion of memory of the multi-SEVI communication device 200, 250 (e.g., in a memory 214), and thus need not be a separate or removable circuit, chip or card.
  • the multi-SEVI communication device 200, 250 may include at least one controller, such as a processor 206, which may be coupled to a coder/decoder (CODEC) 208.
  • the CODEC 208 may in turn be coupled to a speaker 210 and a microphone 212.
  • the processor 206 may also be coupled to the memory 214.
  • the memory 214 may be a non-transitory computer-readable storage medium that stores processor-executable instructions.
  • the instructions may include routing communication data relating to the first or second subscription though a corresponding baseband-RF resource chain.
  • the memory 214 may store an operating system (OS), as well as user application software and executable instructions.
  • the memory 214 may also store application data, such as an array data structure.
  • the memory 214 may also store network information obtained by the SEVI-1 204a or the SEVI-2 204b during an idle mode wakeup. This network information is accessible by both the SEVI-1 204a and the SEVI-2 204b to use in performing idle mode operations.
  • the memory 214 may include a static random access memory (SRAM) component that stores sample values obtained from the network as part of the network information.
  • SRAM static random access memory
  • the processor 206 and the memory 214 may each be coupled to at least one baseband modem processor 216, which may couple to or incorporate a baseband modem 217.
  • the baseband modem 217 may encode and decode information to be ultimately
  • Each SEVI and/or RAT in the multi-SEVI communication device 200, 250 may be associated with a baseband-RF resource chain.
  • a baseband-RF resource chain may include the baseband modem processor 216, which may perform baseband/modem functions for communications with/controlling a RAT, and may include one or more amplifiers and radios, referred to generally herein as RF resources (e.g., RF resource 218, 219).
  • the baseband-RF resource chains may share the baseband modem processor 216 (i.e., a single device that performs baseband/modem functions for all RATs on the multi-SEVI communication device 200, 250).
  • each baseband-RF resource chain may include physically or logically separate baseband processors (e.g., BB1, BB2).
  • the RF resources 218 and 219 may be separate resources or shared resources.
  • the RF resource 218 may be a transceiver that performs transmit/receive functions for each of the SEVIs/RATs on the multi-SEVI communication device 200, 250.
  • the RF resource 218 may include separate transmit and receive circuitry, or may include a transceiver that combines transmitter and receiver functions. In some embodiments, the RF resource 218 may include multiple receive circuitries.
  • the RF resource 218 may be coupled to a wireless antenna (e.g., a wireless antenna 220).
  • the RF resource 218 may also be coupled to the baseband modem processor 216.
  • the multi-SEVI communication device 250 may include as second RF resource 219 configured similarly to the RF resource 218 and coupled to a wireless antenna 221.
  • the processor 206, the memory 214, the baseband modem processor(s) 216, and the RF resources 218, 219 may be included in the multi-SEVI communication device 200, 250 as a system-on-chip 250.
  • the first and second SEVIs 204a, 204b and the corresponding SIM interfaces 202a, 202b to each subscription may be external to the system-on-chip 250.
  • various input and output devices may be coupled to components on the system-on-chip 250, such as interfaces or controllers. Example user input components suitable for use in the multi-SFM
  • communication device 200, 250 may include, but are not limited to, a keypad 224, a touchscreen display 226, and the microphone 212.
  • the keypad 224, the touchscreen display 226, the microphone 212, or a combination thereof may perform the function of receiving a request to initiate an outgoing call.
  • the touchscreen display 226 may receive a selection of a contact from a contact list or receive a telephone number.
  • either or both of the touchscreen display 226 and the microphone 212 may perform the function of receiving a request to initiate an outgoing call.
  • the touchscreen display 226 may receive selection of a contact from a contact list or to receive a telephone number.
  • the request to initiate the outgoing call may be in the form of a voice command received via the microphone 212.
  • Interfaces may be provided between the various software modules and functions in the multi-SFM communication device 200, 250 to enable communication between them, as is known in the art.
  • the SFMs 204a, 204b, the baseband processor BBl, BB2, the RF resources 218, 219, and the wireless antennas 220, 221 may constitute two or more radio access technologies (RATs).
  • the multi- SFM communication device 200, 250 may be a Single Radio LTE (SRLTE) communication device that includes a SIM, baseband processor, and RF resource configured to support two different RATs, such as LTE, Wideband Code-Division Multiple Access (WCDMA), and Global GSM. More RATs may be supported on the multi-SFM communication device 200, 250 by adding more SFM cards, SFM interfaces, RF resources, and antennae for connecting to additional mobile networks.
  • SRLTE Single Radio LTE
  • WCDMA Wideband Code-Division Multiple Access
  • More RATs may be supported on the multi-SFM communication device 200, 250 by adding more SFM cards, SFM interfaces, RF resources, and antennae for connecting to additional mobile networks.
  • the multi-SFM communication device 200, 250 may include, among other things, additional SFM interfaces for receiving additional SFM cards, a plurality of RF resources associated with the additional SFM cards, and additional antennae for supporting subscriptions communications with additional mobile networks.
  • FIG. 3 illustrates a multi-SEVI communication device 300 in which the first subscription 310 Tech x and the second subscription 320 Tech Y are both in the active mode (i.e., both subscriptions are actively communicating with a network for voice communication or data transfer).
  • the multi-SEVI communication device 300 includes a shared transmit/receive modem 330 for encoding information for transmission and for decoding information received from a shared RF resource 340.
  • the shared RF resource 340 may be configured for transmitting and receiving RF signals.
  • the shared RF resource 340 may transmit encoded signals received from the modem 330 and may receive RF signals from the air interface and transfer the received RF signals to the modem 330 for decoding.
  • Intermediate operations may be performed, such as up conversion operations and down conversion operations between baseband frequencies and transmission band frequencies, which are omitted for ease of description.
  • the multi-SEVI communication device 300 may be configured to receive Cell Broadcasts on both Tech x (also referred to as “CB X ”) and Tech Y (also referred to as “CB Y "). Thus, in some instances the multi-SEVI communication device 300 may receive a CB X 305 from Tech x and a CB Y 307 from Tech Y at the same or nearly the same time. The CB X 305 and the CB Y 307 may be received in the shared RF resource 340 and processed in the modem 330.
  • the reception of the CB X 305 and the CB Y 307 may consume power due to the redundancy. Additionally, if a voice or data call is active for one or more of the subscriptions, the quality of the call may be degraded during the reception of the Cell Broadcast. In the event that a call is active on both subscriptions, power consumption and user experience may be affected.
  • FIG. 4A illustrates a multi-SEVI communication device 401 configured to limit the reception of Cell Broadcasts to one of the at least two subscriptions for two technologies (e.g., Tech x and Tech Y ).
  • the first subscription 310 Tech x may be designated for reception of Cell Broadcasts, and the reception of Cell Broadcasts on a second subscription 320 (Tech Y ) may be disabled.
  • the reception of Cell Broadcasts may be inhibited in the active mode during a call.
  • the reception of the CB X 305 from Tech x may be blocked or inhibited when the multi-SUV! communication device is on a call with Tech x . Because the reception of Cell Broadcasts for Tech Y is inhibited due to the designation of Tech x for Cell Broadcast reception, the Cell Broadcast CB Y 307 from Tech Y will not be received. Thus, the Cell Broadcast will be missed on both technologies.
  • FIG. 4B illustrates a multi-SEVI communication device 403 configured to limit reception of Cell Broadcasts to one of the at least two subscriptions for two technologies (e.g., Techx and Techy) according to various embodiments.
  • the first subscription 310 Tech x may be designated for reception of Cell Broadcasts.
  • the reception of Cell Broadcasts on the second subscription 320 Tech Y may be disabled.
  • FIG 4B illustrates a scenario in which the channel conditions are such that reception of the Cell Broadcast on Tech x may not possible or may not be reliable.
  • reception of Cell Broadcasts may be managed to ensure successful reception while reducing unnecessary power consumption and redundancy.
  • An illustration of channel conditions 500 is shown in FIG. 5A, illustrating measures of channel conditions during intervals.
  • graph 510 shows a value, such as a channel condition value 511 of the channel conditions over time of a technology (e.g., Tech x ) associated with one of the subscriptions of a multi-SEVI
  • a technology e.g., Tech x
  • the channel condition value 511 may be a value indicative of the channel conditions, such as an SI R, or other value.
  • a threshold Threshc Bx 512 for Tech x may represent a minimum level of the channel condition value 511 that is sufficient to enable reliable reception of Cell Broadcasts.
  • the threshold Thresh CBx 512 may be a common threshold that may be valid for use with both technologies Tech x and Techy.
  • the threshold or minimum level of the channel condition value 511 may be different for the channel conditions that enable reliable reception of Cell Broadcasts and for enable reliable reception of other signals or traffic.
  • the minimum level of the channel condition value 511 that is sufficient to enable reliable reception of Cell Broadcasts may be less than (or greater than) a level of a channel condition value that would be sufficient to support voice or data traffic for the same channel. The minimum level may further depend on the channel on which the Cell Broadcast is configured to be received.
  • the Cell Broadcast may be configured to be received on a dedicated Cell Broadcast Channel (CBCH), a Short Message Service (SMS) channel, a paging channel, etc.
  • CBCH Cell Broadcast Channel
  • SMS Short Message Service
  • paging channel a paging channel
  • the threshold or minimum level of the channel condition value 511 may only be relevant for reception of Cell Broadcasts.
  • Graph 520 shows a channel condition value 521 of the channel conditions over time of a technology (e.g., Tech Y ) associated with one of the other subscriptions of a multi-SFM communication device.
  • the channel condition value 521 may be a value indicative of the channel conditions, such as a SINR, or other value.
  • a threshold Thresh C B y 522 may also be established for Tech Y representing a minimum level of the channel condition value 521 that is sufficient to enable reliable reception of the Cell Broadcast on Tech Y .
  • the threshold Threshc B y 522 may be a common threshold that may be valid for use with both technologies Tech x and Techy. Since, due to their nature, actual Cell Broadcasts may not be generated frequently, the thresholds ThreshcBx 512 and ThreshcBy 522 may be stored from previous Cell Broadcast receptions. Alternatively or additionally, depending on the channel that is expected to be used for reception of the Cell Broadcast, periodic paging messages may be received. Such periodic paging messages may be used to determine the channel conditions sufficient to receive Cell Broadcasts, and thus establish the thresholds Thresh CBx 512 and Thresh CB y 522.
  • the thresholds ThreshcBx 512 and ThreshcBy 522 may be established based on paging messages, test sequences, or other transmissions, which may be performed periodically by the system (e.g., as may be required by rules or standards), or which may have been performed at other times by the Cell Broadcast system, the multi-SFM communication device and/or the infrastructure.
  • the signal conditions for the technologies Tech x and Tech Y may be measured during a measurement interval T ME AS / , such as while the technology is active on the multi-SIM communication device, configured for Cell Broadcast reception, and other such conditions.
  • the channel condition values 511 and 521 may be measured during measurement intervals, such as a T ME AS I 523a, a
  • the measurement intervals T ME AS I 523a, T ME AS 2 523b, and T ME AS3 523C may be separated by hysteresis intervals T HY S T /-
  • the measurement intervals T ME AS I 523a and T ME AS 2 523b may be separated by a hysteresis interval T HY S TI 525a
  • the measurement intervals T ME AS 2 523b and T ME AS 3 523C may be separated by a hysteresis interval T HY S T2 525b and so on.
  • FIG. 5B An example timeline 501 is illustrated in FIG. 5B.
  • the channel conditions as reflected in the channel condition values 511 and 521, may be measured for each technology Tech x and Tech Y .
  • the channel condition values 511 and 521 may be averaged during the measurement intervals.
  • a trend for the channel condition values 511 and 521 may be determined, such as whether the channel conditions are improving or degrading, or other operations may be performed to determine the channel condition values 511 and 521 or derivative values indicative of the channel conditions.
  • the processor of the multi-SEVI communication device may determine the channel conditions relative to the thresholds and relative to each technology. For example, the processor may determine that the measured channel condition value 511 (or averages) for the channel conditions for Tech x are less than the threshold Thresh CBx 512 (e.g., Techx ⁇ ThreshcBx) during the measurement interval T ME AS I 523a. The processor may further determine that the measured channel condition value 521 (or averages) for the channel conditions for Tech Y are greater than or equal to the threshold Thresh CBY 522 (e.g., Techy > Threshc B y) during the measurement interval T ME AS I 523a.
  • Thresh CBY 522 e.g., Techy > Threshc B y
  • the processor may designate, associate, assign, etc. the reception of Cell Broadcasts to Tech Y during the hysteresis interval T HY S TI 525a.
  • the processor may determine that the measured channel condition value 511 (or averages) for the channel conditions for Tech x are less than the threshold ThreshcBx 512 (e.g., Tech x ⁇ ThreshcBx) during the measurement interval T ME AS 2 523b.
  • ThreshcBx 512 e.g., Tech x ⁇ ThreshcBx
  • the processor may further determine that the measured channel condition value 521 (or averages) for the channel conditions for Tech Y are greater than or equal to the threshold ThreshcBy 522 (e.g., Tech Y > Thresh C B y ) during the measurement interval T ME AS 2 523b.
  • ThreshcBy 522 e.g., Tech Y > Thresh C B y
  • the processor may designate the reception of Cell Broadcasts to Tech Y during the hysteresis interval T HY S T2 525b in block 529b.
  • the processor may determine that the measured channel condition value 521 (or averages) for the channel conditions for Techy are less than the threshold ThreshcBy 522 (e.g., Tech Y ⁇ ThreshcBy) during the measurement interval T ME AS3 523C.
  • the processor may further determine that the measured channel condition value 511 (or averages) for the channel conditions for Tech x are greater than or equal to the threshold Thresh CBx 512 (e.g., Techx > Thresh CBx ) during the measurement interval T ME AS 3 523C.
  • the processor may designate the reception of Cell Broadcasts to Tech x during a subsequent hysteresis interval (e.g., T HY S T3 , not shown).
  • the channel condition thresholds may be effectively the same, the parameter compared to the threshold (e.g., RSSI, SINR, etc.) may differ depending upon the technology.
  • the method 600 may be implemented on a multi-SEVI communication device processor (e.g., the processor 206 or the baseband modem processor 216) configured with processor-executable instructions to perform the operations of the method.
  • the processor may establish thresholds for each of the technologies on which Cell Broadcasts may be received. For example, the processor may establish Thresh CBx and Threshc B y for each of the technologies Tech x and Tech Y on which Cell Broadcasts may be received. Establishing the thresholds may be made by measuring, testing, or may be established as an accepted threshold level from a previous Cell Broadcast reception, or other suitable method. Alternatively or additionally, establishing the thresholds may be made by retrieving the threshold value from a memory on the multi-SIM communication device, which may include a memory of the SUV! itself or of the multi-SIM communication device (e.g., 214).
  • the processor may measure the channel conditions for each of the technologies Tech x and Tech Y on which Cell Broadcasts will be received. For example, the processor may measure the signal -plus-interference-to-noise ratio (SINR), received signal strength (RSSI), or similar level indicative of channel conditions.
  • SINR signal -plus-interference-to-noise ratio
  • RSSI received signal strength
  • the processor may determine whether Tech x is currently configured for Cell Broadcast reception.
  • the processor may configure Tech Y to receive Cell Broadcasts in block 631.
  • the processor may configure the multi-SIM communication device for reception of the Cell Broadcast on Tech x in block 629.
  • the processor may further disable reception of Cell Broadcasts on Techy.
  • the method 601 may be implemented on a multi-SEVI communication device processor (e.g., the processor 206 or the baseband modem processor 216) configured with processor-executable instructions to perform the operations of the method.
  • a multi-SEVI communication device processor e.g., the processor 206 or the baseband modem processor 2166 configured with processor-executable instructions to perform the operations of the method.
  • the processor may evaluate criteria for the minimum channel conditions necessary to successfully receive a Cell Broadcast on technology Tech x .
  • the processor may refer to previous reception successes for various paging and/or traffic channels of Tech x on which the Cell Broadcast or portions of the Cell Broadcast is expected to be received.
  • the processor may evaluate the successful reception of other traffic or pages on the Techx channels in order to determine the minimum criteria for successful Cell Broadcast reception on technology Tech x .
  • the processor may establish the Techx channel condition threshold Thresh C Bx, such as based on the evaluation and criteria from block 641.
  • the processor may evaluate criteria for the minimum channel conditions necessary to successfully receive Cell Broadcasts on technology Techy. For example the processor may refer to previous reception successes for various paging and/or traffic channels of Tech Y on which the Cell Broadcast or portions of the Cell Broadcast is expected to be received. The processor may evaluate the successful reception of other traffic or pages on the Tech Y channels in order to determine the minimum criteria for successful Cell Broadcast reception on technology Tech Y . In block 647, the processor may establish the Techy channel condition threshold Threshc B y, such as based on the evaluation and criteria from block 645.
  • Threshc B y such as based on the evaluation and criteria from block 645.
  • the processor may measure the channel conditions of Tech x during a measurement interval T ME AS-
  • the processor may measure the channel conditions of Tech Y during the measurement interval T ME AS- AS described, the processor may measure values indicative of the link quality, channel conditions, etc. such as SINR, RSSI, etc.
  • the processor may determine whether the measured channel conditions for Tech x are greater than or equal to the Tech x Cell Broadcast reception threshold Thresh C Bx-
  • the processor may determine whether the measured channel conditions for Tech Y are less than the Techy Cell Broadcast reception threshold Threshc B y in determination block 655. Alternatively, the processor may configure Tech x for Cell Broadcast reception and disable Cell Broadcast reception on Techy during a hysteresis interval T HY S T in block 657 (e.g., bypassing determination block 655).
  • the processor may configure Tech x for Cell Broadcast reception and disable Cell Broadcast reception on Techy during a hysteresis interval T HY S T in block 657, and return to block 649 to make channel condition measurements for the next measurement interval T ME AS-
  • the processor may implement a process to select between Tech x and Techy in block 665 because the channel conditions of both Tech x and Tech Y are above their respective Cell Broadcast reception thresholds ThreshcBx and ThreshcBy. Thus, either technology could be used to receive Cell Broadcasts.
  • the processor may resolve the "tie" by any of several methods. In some embodiments, one of Tech x and Tech Y may be predesignated as the preferred or default technology for receiving Cell Broadcasts.
  • the processor may select the technology that exceeds the corresponding threshold by the greatest amount. In some embodiments, the processor may determine the technology for receiving Cell Broadcasts that is least likely to be involved in a voice or data call, such as based on usage history, user preferences, etc. In some embodiments, the processor may make a random selection of one technology for receiving Cell Broadcasts. Any other suitable method for resolving the tie may also be implemented.
  • the processor may determine whether the measured channel conditions for Tech Y are greater than or equal to the Techy Cell Broadcast reception threshold ThreshcBy in determination block 661.
  • the processor may implement a process to select between Tech x and Techy in block 667. This process may be needed because neither of the channel conditions of Tech x and Techy are above their respective Cell Broadcast reception thresholds Threshc Bx and Thresh CB y- Thus, neither technology would ordinarily be selected to receive Cell Broadcasts.
  • the processor may select one of the technologies by any of several methods. In some
  • one of Tech x and Techy may be predesignated as the preferred or default technology for receiving Cell Broadcasts either specifically when neither technology is above their respective Cell Broadcast reception thresholds Thresh CBx and Thresh CB y-
  • the processor may select the technology that is closest to the corresponding threshold (e.g., the technology with the "best" channel conditions for receiving Cell
  • the processor may designate the technology for receiving Cell Broadcasts that is least likely to be involved in a voice or data call, such as based on usage history, user preferences, etc. In some embodiments, the processor may make a random selection of one technology for receiving Cell Broadcasts. Any other suitable method for selecting a technology for receiving broadcasts when both technologies are sub- threhsold may also be implemented.
  • the processor may return to making channel condition measurements for the next measurement interval T ME AS in block 649.
  • the processor may configure Tech Y for Cell Broadcast reception and disable Cell Broadcast reception on Tech x during a hysteresis interval T HY S T in block 663, and return to block 649 to make channel condition measurements for the next measurement interval T ME AS-
  • the method 603 may be implemented on a multi-SEVI communication device processor (e.g., the processor 206 or the baseband modem processor 216) configured with processor-executable instructions to perform the operations of the method.
  • a multi-SEVI communication device processor e.g., the processor 206 or the baseband modem processor 2166 configured with processor-executable instructions to perform the operations of the method.
  • the processor may measure channel conditions as described regarding the method 600.
  • the processor may determine whether measured channel conditions for Tech x are greater than or equal to a threshold value.
  • the threshold may be a common threshold (e.g., SINR) or may be a technology specific threshold (e.g., RSSI, SINR, etc.).
  • the processor may determine whether Tech Y is in a Voice/Data call mode in determination block 675. In response to determining that Tech Y is not in a Voice/Data call mode (i.e.,
  • the processor may associate or designate Techy (and disable Cell Broadcast reception on Tech x ) for Cell Broadcast reception in block 663 as described (FIG. 6B).
  • the processor may associate or designate Tech x for Cell Broadcast reception (and disable Cell Broadcast reception on Tech Y ) in block 657 as described (FIG. 6B).
  • the processor may associate or designate Tech Y for Cell Broadcast reception (and disable Cell Broadcast reception on Tech x ) in block 663 as described (FIG. 6B).
  • Some technologies may allow Cell Broadcast reception during a data call.
  • the operations may be modified such that a given technology (e.g., Tech x , Tech Y ) may be configured to receive a Cell Broadcast as long as a voice call is not in progress and threshold conditions are satisfied.
  • the ability to receive Cell Broadcasts during data calls may depend on the radio access technology and/or the service provider.
  • determining whether a technology is in a Voice/Data call mode may include determining whether the technology is in a Data call mode and whether Cell Broadcast reception during a data call is permitted for the technology.
  • the technology may be configured for Cell Broadcast reception during the data call.
  • a full description of embodiments in which Cell Broadcasts can be received during data call modes (but not voice call modes) is omitted for simplicity and generality.
  • the operations of the method 603 may be performed in a loop by periodically measuring channel conditions for both technologies in block 613 and proceeding as described.
  • multi-SEVI communication device 700 may be implemented in any of a variety of multi-SEVI communication devices, an example of which (e.g., multi-SEVI communication device 700) is illustrated in FIG. 7.
  • the multi-SEVI communication device 700 may be similar to the multi-SEVI communication devices 110, 120, 200, 250 as described.
  • the multi-SEVI communication device 700 may implement the methods 600 and 601 as described, or may perform other operations according to various embodiments.
  • the multi-SEVI communication device 700 may include a processor 702 coupled to a touchscreen controller 704 and an internal memory 706.
  • the processor 702 may be one or more multi-core integrated circuits designated for general or specific processing tasks.
  • the internal memory 706 may be volatile or non-volatile memory, and may also be secure and/or encrypted memory, or unsecure and/or unencrypted memory, or any combination thereof.
  • the touchscreen controller 704 and the processor 702 may also be coupled to a touchscreen panel 712, such as a resistive-sensing touchscreen, capacitive-sensing touchscreen, infrared sensing touchscreen, etc. Additionally, the display of the multi-SIM communication device 700 need not have touch screen capability.
  • the multi-SIM communication device 700 may have a cellular network transceiver 708 coupled to the processor 702 and to an antenna 710 and configured for sending and receiving cellular communications.
  • the transceiver 708 and the antenna 710 may be used to implement methods of various embodiments.
  • the multi-SIM communication device 700 may include one or more SEVI cards 716 coupled to the transceiver 708 and/or the processor 702 and may be configured as described.
  • the multi-SIM communication device 700 may include a cellular network wireless modem chip 717 that enables communication via a cellular network and is coupled to the processor.
  • the multi-SIM communication device 700 may also include speakers 714 for providing audio outputs.
  • the multi-SIM communication device 700 may also include a housing 720, constructed of a plastic, metal, or a combination of materials, for containing all or some of the components discussed herein.
  • the multi-SIM communication device 700 may include a power source 722 coupled to the processor 702, such as a disposable or
  • the rechargeable battery may also be coupled to the peripheral device connection port to receive a charging current from a source external to the multi-SIM communication device 700.
  • the multi-SIM communication device 700 may also include a physical button 724 for receiving user inputs.
  • the multi-SIM communication device 700 may also include a power button 726 for turning the multi-SIM communication device 700 on and off.
  • 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 computing devices, 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 configurations.
  • 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 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 devices, 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 described media 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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Abstract

Différents modes de réalisation de la présente invention activent une réception de diffusion cellulaire sur un dispositif de communication mobile à multiples modules d'identité d'abonné (SIM) avec des premier et second abonnements pour des technologies respectives. Un dispositif à multiples SIM peut mesurer des conditions de canal pour les première et seconde technologies d'accès radio, déterminer si les conditions de canal de la première technologie d'accès radio sont supérieures ou égales à un seuil pour recevoir des diffusions cellulaires, déterminer si les conditions de canal de la seconde technologie d'accès radio sont supérieures ou égales au seuil lorsque les conditions de canal de la première technologie d'accès radio sont inférieures au seuil, et désigner la seconde technologie d'accès radio pour recevoir des diffusions cellulaires lorsque les conditions de canal de la seconde technologie d'accès radio sont supérieures au seuil et désactiver la réception de diffusion cellulaire sur la première technologie d'accès radio. Un mode d'appel vocal ou de données sur une technologie peut nécessiter une autre technologie à désigner pour recevoir des diffusions cellulaires.
PCT/US2016/019256 2015-04-16 2016-02-24 Sélection dynamique d'une technologie pour une réception de diffusion cellulaire dans des dispositifs de communication à multiples modules d'identité d'abonné (sim) Ceased WO2016167881A1 (fr)

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IN1574MU2015 2015-04-16
US14/832,123 2015-08-21
US14/832,123 US20160309407A1 (en) 2015-04-16 2015-08-21 Dynamic Selection of a Technology for Cell Broadcast Reception in Multi-SIM Communication Devices

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US20120314610A1 (en) * 2010-09-16 2012-12-13 Spreadtrum Communications (Shanghai) Co., Ltd. Multi-sim multi-standby communication device, and gain obtaining method for non-traffic card thereof
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