WO2021232408A1 - Récupération de connexion dans un service d'abonné double - Google Patents

Récupération de connexion dans un service d'abonné double Download PDF

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Publication number
WO2021232408A1
WO2021232408A1 PCT/CN2020/091810 CN2020091810W WO2021232408A1 WO 2021232408 A1 WO2021232408 A1 WO 2021232408A1 CN 2020091810 W CN2020091810 W CN 2020091810W WO 2021232408 A1 WO2021232408 A1 WO 2021232408A1
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WO
WIPO (PCT)
Prior art keywords
subscriber
cell
identification information
radio resource
resource control
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PCT/CN2020/091810
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English (en)
Inventor
Fojian ZHANG
Hao Zhang
Jian Li
Chaofeng HUI
Yuankun ZHU
Yi Liu
Quanling ZHANG
Bo Yu
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Qualcomm Incorporated
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Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/091810 priority Critical patent/WO2021232408A1/fr
Publication of WO2021232408A1 publication Critical patent/WO2021232408A1/fr

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    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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

  • the following relates generally to wireless communications and more specifically to connection recovery in dual subscriber service.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • UE user equipment
  • a UE may be configured with two subscribers or subscriber identification modules (SIMs) .
  • the subscribers of the UE may be connected to a first cell.
  • the UE may move from a coverage area of a first cell to a second cell, and may perform a handover procedure between the cells, during which a subscriber of the UE may lose cellular connection.
  • SIMs subscriber identification modules
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support connection recovery in dual subscriber service.
  • the described techniques provide for improving cell reconnection when a user equipment (UE) is configured with two subscribers or subscriber identification modules (SIMs) .
  • the two subscribers may share an operator.
  • a first subscriber and a second subscriber of the UE may both establish a radio resource control (RRC) connection to a first cell.
  • the first subscriber may initiate a call with the first cell, and then perform a handover procedure from the first cell to a second cell.
  • the handover procedure may be based on a movement of the UE from a first cell coverage area to a second cell coverage area.
  • the second subscriber may determine that the RRC connection to the first cell is lost.
  • the first subscriber of the UE may communicate identification information of the second cell to the second subscriber of the UE.
  • the second subscriber may establish a second RRC connection with the second cell based on receiving the identification information.
  • the second subscriber may establish the second RRC connection without performing a cell search.
  • FIG. 1 illustrates an example of a system for wireless communications that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIG. 2 illustrates an example of a wireless communications system that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process flow that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIGs. 4 and 5 show block diagrams of devices that support connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIG. 6 shows a block diagram of a communications manager that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIG. 7 shows a diagram of a system including a device that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • FIGs. 8 through 11 show flowcharts illustrating methods that support connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • a user equipment may be configured with one or more subscribers, or subscriber identification modules (SIMs) .
  • SIMs subscriber identification modules
  • the UE may be configured with two subscribers that share a same operator.
  • This UE may be an example of a dual-SIM device.
  • a dual SIM device may have a single radio-frequency (RF) transmit/receive antenna configuration. Therefore, in these cases, one subscriber may operate and be connected to the network via a serving cell at a time. The other subscriber may be disconnected.
  • RF radio-frequency
  • a first subscriber may initiate a call on a first cell (e.g., via a first base station) .
  • the second subscriber may be disconnected based on the single transmit/receive configuration.
  • the second subscriber may attempt to reconnect to a serving cell.
  • the UE may have moved geographic locations, and may perform a handover to a second cell.
  • the second cell may have a stronger signal than the first cell, based on the change in the location of the UE.
  • the first subscriber may perform a handover from the first cell to the second cell, and may complete the call and camp on the second cell.
  • the second subscriber may not be aware of the changed serving cell or the handover performed by the first subscriber.
  • the second subscriber may then initially attempt to connect to the most recent serving cell of the second subscriber, which may be the first cell.
  • the first cell may no longer provide a suitable connection.
  • the second subscriber may then perform a search, determine to connect to the second cell, and perform a connection procedure with the second cell.
  • the connection procedure may be an example of a radio resource control (RRC) connection procedure.
  • RRC radio resource control
  • the first subscriber that is camped on the second cell may share identification information of the second cell with the second subscriber.
  • the first subscriber may share this identification information with the second subscriber before the end of the call, and before the time that the second subscriber attempts to reconnect to a serving cell.
  • the identification information may include information obtained by the first subscriber before, during, or after the handover procedure of the first subscriber from the first cell to the second cell.
  • the identification information may include a cell identifier of the second cell, a synchronization signal block (SSB) central frequency, a public land mobile network (PLMN) mobile country code (MCC) or mobile network code (MNC) , or a combination of these, or another type of identification information of the second cell.
  • SSB synchronization signal block
  • PLMN public land mobile network
  • MCC mobile country code
  • MNC mobile network code
  • the second subscriber may use the identification information to immediately connect to the second cell, without attempting to connect to a previous cell (which may be unavailable or have a poor quality of service) or performing a cell search.
  • the second subscriber may therefore save time, as well as save power and increase battery life of the UE.
  • the second subscriber may directly connect to the second cell and camp on the second cell.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are then described in the context of a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to connection recovery in dual subscriber service.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • NR New Radio
  • the wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.
  • ultra-reliable e.g., mission critical
  • the base stations 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may be devices in different forms or having different capabilities.
  • the base stations 105 and the UEs 115 may wirelessly communicate via one or more communication links 125.
  • Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base station 105 may establish one or more communication links 125.
  • the coverage area 110 may be an example of a geographic area over which a base station 105 and a UE 115 may support the communication of signals according to one or more radio access technologies.
  • the UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times.
  • the UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1.
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, the base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) , as shown in FIG. 1.
  • network equipment e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment
  • the base stations 105 may communicate with the core network 130, or with one another, or both.
  • the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface) .
  • the base stations 105 may communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105) , or indirectly (e.g., via core network 130) , or both.
  • the backhaul links 120 may be or include one or more wireless links.
  • One or more of the base stations 105 described herein may include or may be referred to by a person having ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or other suitable terminology.
  • a base transceiver station a radio base station
  • an access point a radio transceiver
  • a NodeB an eNodeB (eNB)
  • eNB eNodeB
  • a next-generation NodeB or a giga-NodeB either of which may be referred to as a gNB
  • gNB giga-NodeB
  • a UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples.
  • a UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC machine type communications
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • devices such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • the UEs 115 and the base stations 105 may wirelessly communicate with one another via one or more communication links 125 over one or more carriers.
  • the term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) .
  • BWP bandwidth part
  • Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling.
  • the wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • a carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN) ) and may be positioned according to a channel raster for discovery by the UEs 115.
  • E-UTRA evolved universal mobile telecommunication system terrestrial radio access
  • a carrier may be operated in a standalone mode where initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .
  • the communication links 125 shown in the wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115.
  • Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • a carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) .
  • Devices of the wireless communications system 100 e.g., the base stations 105, the UEs 115, or both
  • the wireless communications system 100 may include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths.
  • each served UE 115 may be configured for operating over portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
  • Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread OFDM
  • a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related.
  • the number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) .
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.
  • One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing ( ⁇ f) and a cyclic prefix.
  • a carrier may be divided into one or more BWPs having the same or different numerologies.
  • a UE 115 may be configured with multiple BWPs.
  • a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
  • Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) .
  • Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
  • SFN system frame number
  • Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration.
  • a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots.
  • each frame may include a variable number of slots, and the number of slots may depend on subcarrier spacing.
  • Each slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
  • a subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI duration e.g., the number of symbol periods in a TTI
  • the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • a control region e.g., a control resource set (CORESET)
  • CORESET control resource set
  • a control region for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier.
  • One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115.
  • one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner.
  • An aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size.
  • Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
  • Each base station 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof.
  • the term “cell” may refer to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) .
  • a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) over which the logical communication entity operates.
  • Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the base station 105.
  • a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with geographic coverage areas 110, among other examples.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell.
  • a small cell may be associated with a lower-powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells.
  • Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) .
  • a base station 105 may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
  • protocol types e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB)
  • NB-IoT narrowband IoT
  • eMBB enhanced mobile broadband
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105.
  • the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.
  • the wireless communications system 100 may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timings, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timings, and transmissions from different base stations 105 may, in some examples, not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • Some UEs 115 may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) .
  • M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a base station 105 without human intervention.
  • M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans interacting with the application program.
  • Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
  • Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously) .
  • half-duplex communications may be performed at a reduced peak rate.
  • Other power conservation techniques for the UEs 115 include entering a power saving deep sleep mode when not engaging in active communications, operating over a limited bandwidth (e.g., according to narrowband communications) , or a combination of these techniques.
  • some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • the wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof.
  • the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications.
  • the UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission critical functions) .
  • Ultra-reliable communications may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT) , mission critical video (MCVideo) , or mission critical data (MCData) .
  • MCPTT mission critical push-to-talk
  • MCVideo mission critical video
  • MCData mission critical data
  • Support for mission critical functions may include prioritization of services, and mission critical services may be used for public safety or general commercial applications.
  • the terms ultra-reliable, low-latency, mission critical, and ultra-reliable low-latency may be used interchangeably herein.
  • a UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol) .
  • D2D device-to-device
  • P2P peer-to-peer
  • One or more UEs 115 utilizing D2D communications may be within the geographic coverage area 110 of a base station 105.
  • Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105.
  • groups of the UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group.
  • a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between the UEs 115 without the involvement of a base station 105.
  • the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) .
  • vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these.
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • a vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system.
  • vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communications, or with both.
  • V2N vehicle-to-network
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be connected to the network operators IP services 150.
  • the operators IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
  • Some of the network devices may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC) .
  • Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs) .
  • Each access network transmission entity 145 may include one or more antenna panels.
  • various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105) .
  • the wireless communications system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) .
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors.
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • the wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band.
  • SHF super high frequency
  • EHF extremely high frequency
  • the wireless communications system 100 may support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate use of antenna arrays within a device.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions.
  • the techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • the wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance.
  • operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
  • a base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.
  • the base stations 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) .
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) , where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a base station 105 or a UE 115 may use beam sweeping techniques as part of beam forming operations.
  • a base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115.
  • Some signals e.g., synchronization signals, reference signals, beam selection signals, or other control signals
  • the base station 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission.
  • Transmissions in different beam directions may be used to identify (e.g., by a transmitting device, such as a base station 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the base station 105.
  • a transmitting device such as a base station 105
  • a receiving device such as a UE 115
  • Some signals may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115) .
  • the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted in one or more beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report to the base station 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
  • transmissions by a device may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station 105 to a UE 115) .
  • the UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more sub-bands.
  • the base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded.
  • a reference signal e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS)
  • CRS cell-specific reference signal
  • CSI-RS channel state information reference signal
  • the UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) .
  • PMI precoding matrix indicator
  • codebook-based feedback e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device) .
  • a receiving device may try multiple receive configurations (e.g., directional listening) when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • receive configurations e.g., directional listening
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions.
  • receive beamforming weight sets e.g., different directional listening weight sets
  • a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) .
  • the single receive configuration may be aligned in a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
  • SNR signal-to-noise ratio
  • the wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack.
  • communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based.
  • a Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency.
  • the RRC protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data.
  • transport channels may be mapped to physical channels.
  • the UEs 115 and the base stations 105 may support retransmissions of data to increase the likelihood that data is received successfully.
  • Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly over a communication link 125.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) .
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions) .
  • a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • a UE 115 may be configured with two subscribers or subscriber identification modules (SIMs) . The two subscribers may share an operator.
  • SIMs subscriber identification modules
  • a first subscriber and a second subscriber of the UE 115 may both establish a RRC connection to a first cell.
  • the first cell may include a base station 105 serving a coverage area 110.
  • the first subscriber of the UE 115 may initiate a call with the first cell, and then perform a handover procedure from the first cell to a second cell.
  • the second cell may include a second base station 105 serving a second coverage area 110.
  • the handover procedure may be based on a movement of the UE 115 from a first cell coverage area to a second cell coverage area.
  • the second subscriber of the UE 115 may determine that the RRC connection to the first cell is lost.
  • the first subscriber of the UE 115 may communicate identification information of the second cell to the second subscriber of the UE 115.
  • the second subscriber may establish a second RRC connection with the second cell based on receiving the identification information.
  • the second subscriber may establish the second RRC connection without performing a cell search.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • wireless communications system 200 may implement aspects of wireless communication system 100.
  • UE 115-a may be an example of a UE 115 as described with respect to FIG. 1.
  • UE 115-a may include first subscriber 205-a and second subscriber 205-b.
  • First subscriber 205-a and second subscriber 205-b may share a same operator.
  • UE 115-a may initially be connected to a first cell including serving base station 105-a serving coverage area 110-a.
  • UE 115-a may move geographically to a second cell including base station 105-b and coverage area 110-b.
  • UE 115-a may communicate with base station 105-a over communication channel 210-a.
  • UE 115-a may communicate with base station 105-b over communication channel 210-b.
  • UE 115-a may be initially connected to base station 105-a, and may communicate over communication channel 210-a. Specifically, first subscriber 205-a and second subscriber 205-b may both have RRC connections with base station 105-a of the first cell. Second subscriber 205-a may lose cellular connection, as second subscriber 205-a may not have RF resources with the first cell (e.g., no ongoing call or connection with the first cell) . First subscriber 205-a of UE 115-a may initiate call 215 with base station 105-a. Throughout the duration of call 215, UE 115-a may move geographically from the coverage area 110-a of base station 105-a of the first cell to coverage area 110-b of base station 105-b of the second cell.
  • First subscriber 205-a of UE 115-a may transmit, over channel 210-a, a measurement report of the second cell to base station 105-a of the first cell. Based on the measurement report, base station 105-a may transmit a RRC reconfiguration message to first subscriber 205-a or UE 115-a, indicating for first subscriber 205-a to perform a handover procedure to base station 105-b of the second cell.
  • First subscriber 205-a may perform the handover procedure from the first cell (base station 105-a) to the second cell (base station 105-b) .
  • the initiated call 215 may be maintained throughout the handover procedure.
  • First subscriber 205-a may eventually end call 215, and may camp on the second cell.
  • First subscriber 205-a may store identification information 220 of the second cell in a share cell list (e.g., share_cell_list) in non-volatile memory.
  • a share cell list e.g., share_cell_list
  • First subscriber 205-a may share identification information 220 of the second cell with second subscriber 205-b.
  • the identification information 220 of the second cell may include a cell identifier, a SSB central frequency of the second cell, a PLMN MCC or MNC, or a combination of these.
  • the identification information 220 may be transmitted in a share cell list message to second subscriber 205-b.
  • second subscriber 205-b may connect directly to base station 105-b and the second cell, without performing a cell search.
  • Second subscriber 205-b may establish a RRC connection with the second cell over communication channel 210-b.
  • the RRC connection may be established by second subscriber 205-b transmitting a RRC connection request message (e.g., RRCConnectionRequest message) to base station 105-b, receiving a RRC connection setup message (e.g., RRCConnectionSetup message) from base station 105-b, and transmitting a RRC connection setup complete message (e.g., RRCConnectionSetupComplete message) to base station 105-b.
  • Second subscriber 205-b may camp on the second cell.
  • the second subscriber saves time by connecting directly to the second cell without needing to search, and thus may be ready to transmit and receive signals more quickly.
  • FIG. 3 illustrates an example of a process flow 300 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • process flow 300 may implement aspects of wireless communication system 100.
  • the process flow 300 may include a UE 115-b, which may be an example of a UE 115 as described with respect to FIGs. 1 and 2.
  • UE 115-b may include first subscriber 305-a and second subscriber 305-b.
  • First subscriber 305-a and second subscriber 305-b may share a same operator.
  • Process flow 300 may also include base stations 105-c and 105-d, which may be examples of base stations 105 as described with respect to FIGs. 1 and 2.
  • Base stations 105-c and 105-d may be examples of two different cells.
  • UE 115-b may move geographically between coverage areas of base station 105-c and base station 105-d.
  • first subscriber 305-a may establish a RRC connection with base station 105-c of a first cell.
  • second subscriber 305-a may establish a RRC connections with base station 105-c of a first cell.
  • first subscriber 305-a may initiate a call with base station 105-c of the first cell.
  • first subscriber 305-a may perform a handover procedure from base station 105-c of the first cell to base station 105-d of the second cell.
  • the handover procedure may be initiated based on first subscriber 305-a transmitting a measurement report of base station 105-d of the second cell to base station 105-c of the first cell.
  • First subscriber 305-a may receive a RRC reconfiguration message from base station 105-c of the first cell, where the RRC reconfiguration message includes an indication to handover to base station 105-d of the second cell.
  • First subscriber 305-a may transmit a RRC reconfiguration complete message to base station 105-d of the second cell.
  • first subscriber 305-a may end the call in the second cell, and may camp on the second cell (including base station 105-d) .
  • second subscriber 305-b may determine that the RRC connection to base station 105-c of the first cell is lost.
  • first subscriber 305-a may communicate identification information of base station 105-d of the second cell to second subscriber 305-b.
  • the identification information may be a cell identifier of the second cell, a SSB central frequency of the second cell, and PLMN MCC or MNC, or a combination of these, or other identification information.
  • First subscriber 305-a may also store the identification information in non-volatile memory.
  • second subscriber 305-b may receive the identification information of the second cell (e.g., base station 105-d) . Based on receiving the identification information, second subscriber 305-b may refrain from performing a search for a serving cell.
  • the identification information may be received from first subscriber 305-a in a share cell list (e.g., share_cell_list) message.
  • second subscriber 305-b may establish a second RRC connection with the second cell and base station 105-b based on the identification information.
  • the establishment of the RRC connection may include second subscriber 305-b transmitting a RRC connection request to the second cell (e.g., base station 105-d) .
  • Second subscriber 305-b may receive a RRC connection setup message from base station 105-d, and second subscriber 305-b may transmit a RRC connection setup message to base station 105-d of the second cell.
  • Second subscriber 305-b may camp on the second cell.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the device 405 may be an example of aspects of a UE 115 as described herein.
  • the device 405 may include a receiver 410, a communications manager 415, and a transmitter 420.
  • the device 405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to connection recovery in dual subscriber service, etc. ) . Information may be passed on to other components of the device 405.
  • the receiver 410 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 410 may utilize a single antenna or a set of antennas.
  • the communications manager 415 may establish, by a first subscriber of the UE, a RRC connection to a first cell, initiate, by the first subscriber of the UE, a call with the first cell, perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber, and communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the communications manager 415 may also establish, at a second subscriber of the UE, a RRC connection to a first cell, where the UE includes multiple subscriber services with a first subscriber and the second subscriber, establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell, determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost, and receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE.
  • the communications manager 415 may be an example of aspects of the communications manager 710 described herein.
  • the communications manager 415 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 415, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • code e.g., software or firmware
  • ASIC application-specific integrated circuit
  • the communications manager 415 may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components.
  • the communications manager 415, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 415, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • I/O input/output
  • the transmitter 420 may transmit signals generated by other components of the device 405.
  • the transmitter 420 may be collocated with a receiver 410 in a transceiver module.
  • the transmitter 420 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 420 may utilize a single antenna or a set of antennas.
  • the communications manager 415 described herein may be implemented as a chipset of a wireless modem, and the receiver 410 and the transmitter 420 may be implemented as sets of analog components (e.g., amplifiers, filters, phase shifters, antennas, etc. )
  • the wireless modem may obtain and decode signals from the receiver 410 over a receive interface, and may output signals for transmission to the transmitter 420 over a transmit interface.
  • the actions performed by the communications manager 415 as described herein may be implemented to realize one or more potential advantages.
  • One implementation may allow a UE 115 to save power and increase battery life by decreasing time spent in cell search by one subscriber of a UE 115. By sharing cell information between subscribers, the UE 115 may save time spent performing cell search, thereby saving power, and the UE 115 may be able to more quickly communicate with a network.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the device 505 may be an example of aspects of a device 405, or a UE 115 as described herein.
  • the device 505 may include a receiver 510, a communications manager 515, and a transmitter 545.
  • the device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to connection recovery in dual subscriber service, etc. ) . Information may be passed on to other components of the device 505.
  • the receiver 510 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the receiver 510 may utilize a single antenna or a set of antennas.
  • the communications manager 515 may be an example of aspects of the communications manager 415 as described herein.
  • the communications manager 515 may include a RRC component 520, a call initiation component 525, a handover component 530, an identification component 535, and a connection termination component 540.
  • the communications manager 515 may be an example of aspects of the communications manager 710 described herein.
  • the RRC component 520 may establish, by a first subscriber of the UE, a RRC connection to a first cell.
  • the call initiation component 525 may initiate, by the first subscriber of the UE, a call with the first cell.
  • the handover component 530 may perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber.
  • the identification component 535 may communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the RRC component 520 may establish, at a second subscriber of the UE, a RRC connection to a first cell, where the UE includes multiple subscriber services with a first subscriber and the second subscriber and establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell.
  • the connection termination component 540 may determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost.
  • the identification component 535 may receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE.
  • the transmitter 545 may transmit signals generated by other components of the device 505.
  • the transmitter 545 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 545 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 545 may utilize a single antenna or a set of antennas.
  • a processor of a UE 115 may operate the components described herein to realize one or more potential advantages.
  • the processor of the UE 115 may save power and increase battery life by improving the efficiency of serving cell searches.
  • the processor of the UE 115 may operate the transmitter 545 of the UE 115 to connect directly to a cell based on cell identification information shred between two subscribers of the UE 115. A subscriber of the UE 115 may therefore be able to connect to a cell more quickly and initiate communications sooner.
  • FIG. 6 shows a block diagram 600 of a communications manager 605 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the communications manager 605 may be an example of aspects of a communications manager 415, a communications manager 515, or a communications manager 710 described herein.
  • the communications manager 605 may include a RRC component 610, a call initiation component 615, a handover component 620, an identification component 625, a measurement component 630, a call termination component 635, a camping component 640, a connection termination component 645, and a cell search component 650.
  • Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the RRC component 610 may establish, by a first subscriber of the UE, a RRC connection to a first cell. In some examples, receiving, by the first subscriber of the UE, a RRC reconfiguration message from the first cell, where the RRC reconfiguration message includes an indication to handover to the second cell.
  • the RRC component 610 may transmit, by the first subscriber of the UE, a RRC reconfiguration complete message to the second cell.
  • establishing, at a second subscriber of the UE, a RRC connection to a first cell where the UE includes multiple subscriber services with a first subscriber and the second subscriber.
  • the RRC component 610 may establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell.
  • the RRC component 610 may transmit, by the second subscriber of the UE, a RRC connection request to the second cell.
  • the RRC component 610 may receive, by the second subscriber of the UE, a RRC connection setup message from the second cell.
  • the RRC component 610 may transmit, by the second subscriber of the UE, a RRC connection setup complete message to the second cell.
  • the first subscriber of the UE and the second subscriber of the UE share an operator.
  • the call initiation component 615 may initiate, by the first subscriber of the UE, a call with the first cell.
  • the handover component 620 may perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber. In some cases, the first subscriber of the UE and the second subscriber of the UE share a same operator.
  • the identification component 625 may communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE. In some examples, the identification component 625 may store, by the first subscriber of the UE, the identification information of the second cell to a share cell list in non-volatile memory.
  • the identification component 625 may receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE. In some examples, the identification component 625 may receive, by the second subscriber of the UE, the identification information in a share cell list message from the first subscriber of the UE.
  • the identification information includes a cell identifier of the second cell, a synchronization signal block central frequency of the second cell, a public land mobile network mobile country code or mobile network code, or both, or a combination thereof.
  • the measurement component 630 may transmit, by the first subscriber of the UE, a measurement report of the second cell to the first cell.
  • the call termination component 635 may end, by the first subscriber of the UE, the call in the second cell.
  • the camping component 640 may camp, by the first subscriber of the UE, on the second cell.
  • the connection termination component 645 may determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost.
  • the cell search component 650 may refrain, by the second subscriber of the UE, from performing a search for a serving cell based on receiving the identification information of the second cell.
  • the camping component 640 may camp, by the second subscriber of the UE, on the second cell.
  • FIG. 7 shows a diagram of a system 700 including a device 705 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the device 705 may be an example of or include the components of device 405, device 505, or a UE 115 as described herein.
  • the device 705 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 710, an I/O controller 715, a transceiver 720, an antenna 725, memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745) .
  • buses e.g., bus 745
  • the communications manager 710 may establish, by a first subscriber of the UE, a RRC connection to a first cell, initiate, by the first subscriber of the UE, a call with the first cell, perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber, and communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the communications manager 710 may also establish, at a second subscriber of the UE, a RRC connection to a first cell, where the UE includes multiple subscriber services with a first subscriber and the second subscriber, establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell, determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost, and receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE.
  • the I/O controller 715 may manage input and output signals for the device 705.
  • the I/O controller 715 may also manage peripherals not integrated into the device 705.
  • the I/O controller 715 may represent a physical connection or port to an external peripheral.
  • the I/O controller 715 may utilize an operating system such as or another known operating system.
  • the I/O controller 715 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 715 may be implemented as part of a processor.
  • a user may interact with the device 705 via the I/O controller 715 or via hardware components controlled by the I/O controller 715.
  • the transceiver 720 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 720 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 720 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 725. However, in some cases the device may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 730 may include RAM and ROM.
  • the memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 730 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 740 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 740 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 740.
  • the processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 730) to cause the device 705 to perform various functions (e.g., functions or tasks supporting connection recovery in dual subscriber service) .
  • the code 735 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 735 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 735 may not be directly executable by the processor 740 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 8 shows a flowchart illustrating a method 800 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the operations of method 800 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 800 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish, by a first subscriber of the UE, a RRC connection to a first cell.
  • the operations of 805 may be performed according to the methods described herein. In some examples, aspects of the operations of 805 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may initiate, by the first subscriber of the UE, a call with the first cell.
  • the operations of 810 may be performed according to the methods described herein. In some examples, aspects of the operations of 810 may be performed by a call initiation component as described with reference to FIGs. 4 through 7.
  • the UE may perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber.
  • the operations of 815 may be performed according to the methods described herein. In some examples, aspects of the operations of 815 may be performed by a handover component as described with reference to FIGs. 4 through 7.
  • the UE may communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the operations of 820 may be performed according to the methods described herein. In some examples, aspects of the operations of 820 may be performed by an identification component as described with reference to FIGs. 4 through 7.
  • FIG. 9 shows a flowchart illustrating a method 900 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the operations of method 900 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 900 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish, by a first subscriber of the UE, a RRC connection to a first cell.
  • the operations of 905 may be performed according to the methods described herein. In some examples, aspects of the operations of 905 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may initiate, by the first subscriber of the UE, a call with the first cell.
  • the operations of 910 may be performed according to the methods described herein. In some examples, aspects of the operations of 910 may be performed by a call initiation component as described with reference to FIGs. 4 through 7.
  • the UE may transmit, by the first subscriber of the UE, a measurement report of the second cell to the first cell.
  • the operations of 915 may be performed according to the methods described herein. In some examples, aspects of the operations of 915 may be performed by a measurement component as described with reference to FIGs. 4 through 7.
  • the UE may receive, by the first subscriber of the UE, a RRC reconfiguration message from the first cell, where the RRC reconfiguration message includes an indication to handover to the second cell.
  • the operations of 920 may be performed according to the methods described herein. In some examples, aspects of the operations of 920 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may perform a handover procedure from the first cell to a second cell, where the UE includes multiple subscriber services with the first subscriber and a second subscriber.
  • the operations of 925 may be performed according to the methods described herein. In some examples, aspects of the operations of 925 may be performed by a handover component as described with reference to FIGs. 4 through 7.
  • the UE may transmit, by the first subscriber of the UE, a RRC reconfiguration complete message to the second cell.
  • the operations of 930 may be performed according to the methods described herein. In some examples, aspects of the operations of 930 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may communicate, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the operations of 935 may be performed according to the methods described herein. In some examples, aspects of the operations of 935 may be performed by an identification component as described with reference to FIGs. 4 through 7.
  • FIG. 10 shows a flowchart illustrating a method 1000 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the operations of method 1000 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1000 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish, at a second subscriber of the UE, a RRC connection to a first cell, where the UE includes multiple subscriber services with a first subscriber and the second subscriber.
  • the operations of 1005 may be performed according to the methods described herein. In some examples, aspects of the operations of 1005 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost.
  • the operations of 1010 may be performed according to the methods described herein. In some examples, aspects of the operations of 1010 may be performed by a connection termination component as described with reference to FIGs. 4 through 7.
  • the UE may receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE.
  • the operations of 1015 may be performed according to the methods described herein. In some examples, aspects of the operations of 1015 may be performed by an identification component as described with reference to FIGs. 4 through 7.
  • the UE may establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell.
  • the operations of 1020 may be performed according to the methods described herein. In some examples, aspects of the operations of 1020 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • FIG. 11 shows a flowchart illustrating a method 1100 that supports connection recovery in dual subscriber service in accordance with aspects of the present disclosure.
  • the operations of method 1100 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1100 may be performed by a communications manager as described with reference to FIGs. 4 through 7.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may establish, at a second subscriber of the UE, a RRC connection to a first cell, where the UE includes multiple subscriber services with a first subscriber and the second subscriber.
  • the operations of 1105 may be performed according to the methods described herein. In some examples, aspects of the operations of 1105 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • the UE may determine, by the second subscriber of the UE, that the RRC connection to the first cell is lost.
  • the operations of 1110 may be performed according to the methods described herein. In some examples, aspects of the operations of 1110 may be performed by a connection termination component as described with reference to FIGs. 4 through 7.
  • the UE may receive, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE.
  • the operations of 1115 may be performed according to the methods described herein. In some examples, aspects of the operations of 1115 may be performed by an identification component as described with reference to FIGs. 4 through 7.
  • the UE may refrain, by the second subscriber of the UE, from performing a search for a serving cell based on receiving the identification information of the second cell.
  • the operations of 1120 may be performed according to the methods described herein. In some examples, aspects of the operations of 1120 may be performed by a cell search component as described with reference to FIGs. 4 through 7.
  • the UE may establish, by the second subscriber of the UE, a second RRC connection with the second cell based on the identification information of the second cell.
  • the operations of 1125 may be performed according to the methods described herein. In some examples, aspects of the operations of 1125 may be performed by a RRC component as described with reference to FIGs. 4 through 7.
  • Example 1 is a method of wireless communications at a UE that includes establishing by a first subscriber of the UE, a RRC connection to a first cell, initiating, by the first subscriber of the UE, a call with the first cell, performing a handover procedure from the first cell to a second cell, wherein the UE comprises multiple subscriber services with the first subscriber and a second subscriber, and communicating, by the first subscriber of the UE, identification information of the second cell to the second subscriber of the UE.
  • the performing the handover procedure to the second cell of the method of example 1 includes transmitting, by the first subscriber of the UE, a measurement report of the second cell to the first cell, receiving, by the first subscriber of the UE, a RRC reconfiguration message from the first cell, wherein the RRC reconfiguration message comprises an indication to handover to the second cell, and transmitting, by the first subscriber of the UE, a RRC reconfiguration complete message to the second cell.
  • Example 3 the method of any of examples 1–2 further includes ending, by the first subscriber of the UE, the call in the second cell, and camping, by the first subscriber of the UE, on the second cell.
  • Example 4 is the method of any of examples 1–3, where the first subscriber of the UE and the second subscriber of the UE share a same operator.
  • Example 5 is the method of any of examples 1–4, where the identification information includes a cell identifier of the second cell, a SSB central frequency, a PLMN MCC or MNC, or a combination of these.
  • Example 6 the method of any of examples 1–5 further includes storing by the first subscriber of the UE, the identification information of the second cell to a share cell list in non-volatile memory.
  • Example 7 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of examples 1–6.
  • Example 8 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of examples 1–6.
  • Example 9 is a system including one or more processors and memory in electronic communication with the one or more processors storing instructions executable by the one or more processors to cause the system or apparatus to implement a method as in any of examples 1–6.
  • Example 10 is a method of wireless communications at a UE that includes establishing, at a second subscriber of the UE, a RRC connection to a first cell, wherein the UE comprises multiple subscriber services with a first subscriber and the second subscriber, determining, by the second subscriber of the UE, that the RRC connection to the first cell is lost, receiving, by the second subscriber of the UE, identification information of a second cell from the first subscriber of the UE, and establishing, by the second subscriber of the UE, a second RRC connection with the second cell based at least in part on the identification information of the second cell.
  • Example 11 is the method of example 10, where the first subscriber of the UE and the second subscriber of the UE share an operator.
  • Example 12 the method of any of examples 10–11 further includes refraining, by the second subscriber of the UE, from performing a search for a serving cell based at least in part on receiving the identification information of the second cell.
  • Example 13 is the method of any of examples 10–12, where the identification information includes a cell identifier of the second cell, a SSB central frequency, a PLMN MCC or MNC, or a combination of these.
  • Example 14 the establishing the second RRC connection of any of examples 10–13 includes transmitting, by the second subscriber of the UE, a RRC connection request to the second cell, receiving, by the second subscriber of the UE, a RRC connection setup message from the second cell, and transmitting, by the second subscriber of the UE, a RRC connection setup complete message to the second cell.
  • Example 15 the method of any of examples 10–14 includes camping, by the second subscriber of the UE, on the second cell.
  • Example 16 the receiving the identification information of the second cell of any of examples 10–15 further includes receiving, by the second subscriber of the UE, the identification information in a share cell list message from the first subscriber of the UE.
  • Example 17 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of examples 10–16.
  • Example 18 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of examples 10–16.
  • Example 19 is a system including one or more processors and memory in electronic communication with the one or more processors storing instructions executable by the one or more processors to cause the system or apparatus to implement a method as in any of examples 10–16.
  • LTE, LTE-A, LTE-A Pro, or NR may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks.
  • the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
  • UMB Ultra Mobile Broadband
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDM
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any 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, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special purpose computer.
  • non-transitory computer-readable media may include random-access memory (RAM) , read-only memory (ROM) , electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable ROM
  • flash memory compact disk (CD) ROM or other optical disk storage
  • CD compact disk
  • magnetic disk storage or other magnetic storage devices or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer,
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés, des systèmes et des dispositifs pour des communications sans fil. Un équipement utilisateur (UE) peut être configuré avec deux abonnés, ou deux modules d'identification d'abonné différents (SIM). Un premier abonné et un second abonné de l'UE peuvent établir une connexion d'une commande de ressources radio (RRC) avec une première cellule. Le premier abonné peut initier un appel avec la première cellule, puis effectuer une procédure de transfert de la première cellule vers une seconde cellule. Le second abonné peut déterminer que la connexion RRC avec la première cellule est perdue. Le premier abonné de l'UE peut communiquer les informations d'identification de la seconde cellule au second abonné de l'UE. Le second abonné peut établir une seconde connexion RRC avec la seconde cellule d'après la réception des informations d'identification.
PCT/CN2020/091810 2020-05-22 2020-05-22 Récupération de connexion dans un service d'abonné double WO2021232408A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080194262A1 (en) * 2007-02-12 2008-08-14 Samsung Electronics Co., Ltd. Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system
WO2015180140A1 (fr) * 2014-05-30 2015-12-03 Apple Inc. Appareil supportant des modules d'identité d'abonné dans un dispositif accessoire sans fil
WO2016164396A1 (fr) * 2015-04-10 2016-10-13 Qualcomm Incorporated Partage de ressources de mesure à l'intérieur d'un équipement utilisateur multi-réception à sim multiples
WO2016179162A1 (fr) * 2015-05-06 2016-11-10 Qualcomm Incorporated Réduction d'interruptions d'appel pendant un décrochage dans un dispositif à positions d'attentes multiples/module d'identité à abonnés multiples
CN107529155A (zh) * 2016-06-15 2017-12-29 英特尔Ip公司 用于通过多个订户身份模块知晓进行性能提升的设备和方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080194262A1 (en) * 2007-02-12 2008-08-14 Samsung Electronics Co., Ltd. Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system
WO2015180140A1 (fr) * 2014-05-30 2015-12-03 Apple Inc. Appareil supportant des modules d'identité d'abonné dans un dispositif accessoire sans fil
WO2016164396A1 (fr) * 2015-04-10 2016-10-13 Qualcomm Incorporated Partage de ressources de mesure à l'intérieur d'un équipement utilisateur multi-réception à sim multiples
WO2016179162A1 (fr) * 2015-05-06 2016-11-10 Qualcomm Incorporated Réduction d'interruptions d'appel pendant un décrochage dans un dispositif à positions d'attentes multiples/module d'identité à abonnés multiples
CN107529155A (zh) * 2016-06-15 2017-12-29 英特尔Ip公司 用于通过多个订户身份模块知晓进行性能提升的设备和方法

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