WO2021212298A1 - Reprise rapide de service réseau en cas de conflit de ressources radio - Google Patents

Reprise rapide de service réseau en cas de conflit de ressources radio Download PDF

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Publication number
WO2021212298A1
WO2021212298A1 PCT/CN2020/085784 CN2020085784W WO2021212298A1 WO 2021212298 A1 WO2021212298 A1 WO 2021212298A1 CN 2020085784 W CN2020085784 W CN 2020085784W WO 2021212298 A1 WO2021212298 A1 WO 2021212298A1
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WO
WIPO (PCT)
Prior art keywords
rat
subscription
connection
base station
transmitting
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Application number
PCT/CN2020/085784
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English (en)
Inventor
Fojian ZHANG
Jian Li
Chaofeng HUI
Hao Zhang
Yuankun ZHU
Quanling ZHANG
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Qualcomm Incorporated
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Priority to PCT/CN2020/085784 priority Critical patent/WO2021212298A1/fr
Publication of WO2021212298A1 publication Critical patent/WO2021212298A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the following relates generally to wireless communications and more specifically to fast resumption of network service in case of radio resource conflict.
  • 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 have multiple subscriptions to provide different network connections to different radio access technologies. Some techniques for establishing these network connections can be improved.
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support connecting to multi-radio access technology service in non-standalone mode.
  • the described techniques provide for establishing wireless connections for a user equipment (UE) with multiple subscriber identity module (SIM) cards.
  • a multi-SIM UE may connect to multiple, different networks and radio access technologies (RATs) .
  • RATs radio access technologies
  • a first subscription may attempt to add a secondary cell for a first RAT around the same time that a second subscription performs a registration procedure for a second RAT.
  • the registration procedure may have higher priority for radio resources than the secondary cell addition, which may cause a failure for the secondary cell addition.
  • the network has already released a measurement configuration for the first subscription, the first subscription may have significant delays to establish a network connection for the first RAT.
  • a UE may implement techniques described herein to recover from the secondary cell addition failure. If the UE detects a secondary cell group (SCG) addition failure, the first subscription of the UE may check the failure reason. If the failure reason indicates that the radio resources were unavailable, this may be an indication the radio resource was being used by the first subscription.
  • the UE may send, via the first subscription, a detach request for the first RAT.
  • the base station may transmit a detach accept message to the UE.
  • the UE may subsequently transmit an attach request for the first RAT and receive, from the base station, an attach accept in response to transmitting the attach request.
  • the base station may send another measurement configuration to the UE, enabling the UE to perform another measurement for SCG addition.
  • the UE may send a measurement report to the base station and receive a configuration message to add an SCG for the first RAT.
  • the UE may then finish the connection setup to the first RAT for the first subscription.
  • FIG. 1 illustrates an example of a system for wireless communications that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 2 illustrates an example of a wireless communications system that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process flow that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIGs. 4 and 5 show block diagrams of devices that support fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 6 shows a block diagram of a communications manager that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 7 shows a diagram of a system including a device that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIGs. 8 and 9 show block diagrams of devices that support fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 10 shows a block diagram of a communications manager that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIG. 11 shows a diagram of a system including a device that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • FIGs. 12 through 15 show flowcharts illustrating methods that support fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • a user equipment may have multiple subscriber identity module (SIM) cards that enable the UE to connect to multiple, different networks and radio access technologies (RATs) .
  • SIM subscriber identity module
  • a UE may have a first SIM card with a first subscription providing access to a New Radio (NR) network, and a second SIM card with a second subscription providing access to a Long Term Evolution (LTE) network.
  • the first subscription may provide a non-standalone connection to the NR network, where the first subscription also is connected to the LTE network for control signaling.
  • the network may initiate a procedure to establish a secondary cell group (SCG) for NR for the first subscription.
  • SCG secondary cell group
  • the network may configure the UE with measurement resources, and the UE may report measurements to a serving base station.
  • the network may receive the measurement reports and release the measurement configuration for the UE.
  • the base station may then send a radio resource control (RRC) reconfiguration message for the UE to add an SCG for NR.
  • RRC radio resource control
  • the second SIM at the UE may begin an attach procedure (e.g., an LTE Attach Procedure) .
  • attach procedure may be given higher priority for radio resources. Therefore, the first subscription may lose the radio resource and fail the SCG addition.
  • the UE may have already released the measurement configuration, and the UE may not be able to send another measurement report and re-initiate an SCG addition procedure. Therefore, the UE may not have access to NR, and the UE may have to wait to receive NR services.
  • a UE may implement techniques described herein to recover from the SCG addition failure. If the UE detects an SCG addition failure, the first subscription of the UE may check the SCG failure reason. If the SCG failure reason indicates that the radio resources was unavailable, this may be an indication the radio resource was being used by the first subscription. Based on determining that the SCG failure reason is due to radio resources being unavailable, the UE may send, via the first subscription, a detach request for the first RAT. In response, the base station may transmit a detach accept message to the UE. The UE may subsequently transmit an attach request for the first RAT and receive, from the base station, an attach accept message in response to transmitting the attach request.
  • the base station may send another measurement configuration to the UE, enabling the UE to perform another measurement for SCG addition.
  • the UE may send a measurement report to the base station and receive a configuration message to add an SCG for the first RAT.
  • the UE may then finish the connection setup to the first RAT for the first subscription.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to connecting to multi-radio access technology service in non-standalone mode.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports fast resumption of network service in case of radio resource conflict 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 an LTE network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • 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 multi-SIM UE 115 may connect to multiple, different networks and RATs.
  • a first subscription may attempt to add an SCG for a first RAT (e.g., NR) around the same time that a second subscription performs a registration procedure for a second RAT (e.g., LTE) .
  • the registration procedure may have higher priority for radio resources than the SCG addition, which may cause a failure for the SCG addition. If the network has already released a measurement configuration for the first subscription, the first subscription may have significant delays to establish a network connection for the first RAT.
  • a UE 115 may implement techniques described herein to recover from the SCG addition failure. If the UE 115 detects an SCG addition failure, the first subscription of the UE may check the SCG failure reason. If the SCG failure reason indicates that the radio resources was unavailable, this may be an indication the radio resource was being used by the first subscription. Based on determining that the SCG failure reason is due to radio resources being unavailable, the UE 115 may send, via the first subscription, a detach request for the first RAT. In response, the base station 105 may transmit a detach accept message to the UE 115. The UE 115 may subsequently transmit an attach request for the first RAT and receive, from the base station, an attach accept message in response to transmitting the attach request.
  • the base station 105 may send another measurement configuration to the UE 115, enabling the UE 115 to perform another measurement for SCG addition.
  • the UE 115 may send a measurement report to the base station and receive a configuration message to add an SCG for the first RAT.
  • the UE 115 may then finish the connection setup to the first RAT for the first subscription.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the wireless communications system 200 may implement aspects of wireless communications system 100.
  • the wireless communications system 200 may include UE 115-a and base station 105-a, which may be respective examples of a UE 115 and a base station 105 as described with reference to FIG. 1.
  • UE 115-a may be an example of a dual-SIM, or multi-SIM, UE 115.
  • UE 115-a may include a first SIM 205 and a second SIM 210.
  • the first SIM 205 may provide a first subscription
  • the second SIM 210 may provide a second subscription.
  • UE 115-a may communicate with a wireless communications network via the first and second subscriptions via one or more RATs.
  • base station 105-a may provide one or more of the RATs and provide radio links for one or more of the subscriptions of UE 115-a.
  • UE 115-a and base station 105-a may communicate via communications links 215 for the first subscription and communications link 220 for the second subscription.
  • the first SIM 205 may be an example of a non-standalone subscription.
  • the first SIM 205 may provide wireless communications using two RATs.
  • the first subscription may include a first RAT (e.g., NR communications) and a second RAT (e.g., LTE communications) , where the second RAT may provide control signaling to a core network or provide an example of an anchor carrier for the first subscription.
  • the first RAT may provide SCGs with faster data throughput for UE 115-a, while UE 115-a communicates control signaling through a master cell group (MCG) via the second RAT.
  • MCG master cell group
  • the second subscription from the second SIM 210 may provide wireless communication access of just the second type of RAT.
  • the first subscription may be an example of a default data subscription (e.g., associated with a non-standalone mode) and the second subscription may be an example of a non-default data subscription (e.g., associated with an LTE Mode) .
  • UE 115-a may perform an attach procedure for the first SIM 205 to establish a wireless connection for the first subscription. For example, UE 115-a may transmit an attach request for the first SIM 205 to the base station 105-a. Base station 105-a may transmit an attach accept message to UE 115-a in response to the attach request for the first SIM 205. In some cases, this attach procedure may include UE 115-a establishing an LTE connection for the first SIM 205. Once the first subscription finishes the attach procedure, base station 105-a may send a measurement control information to UE 115-a for the first RAT. The first subscription may measure candidate cells to find an SCG of the first RAT and report the measurements to base station 105-a. Base station 105-a may receive the measurement reports for an SCG of the first RAT and remove the measurement configuration for the first RAT from the first subscription of UE 115-a. The network may begin an SCG addition procedure for the first subscription of UE 115-a.
  • the second SIM 210 may begin a registration or an attach procedure for the second subscription to access the second RAT.
  • a registration procedure may have higher priority for radio resources.
  • an attach procedure on a non-default data subscription may have higher priority than an SCG addition on a default data subscription, which may lead to radio resource conflict. Therefore, the first subscription may lose the radio frequency resource which was being used for the SCG addition procedure. Due to temporarily losing the radio resource because of the second subscription’s attach procedure, the first subscription may detect a failed SCG addition, and the first subscription may lose the radio frequency resource.
  • the first subscription of UE 115-a may therefore not be able to access the first RAT.
  • UE 115-a may also not be able to measure other SCGs of the first RAT.
  • UE 115-a may then be unable to access the first RAT for a long time, which causes significant delays, drastic throughput reduction, and poor user experience.
  • UE 115-a may perform techniques described herein to recover access to the first RAT. For example, if UE 115-a determines that the SCG failure reason is due to the radio resource being unavailable, UE 115-a may perform a detach procedure for the first SIM 205 to terminate the wireless connection for the first subscription. For example, UE 115-a may transmit, to base station 105-a via the second RAT, a detach request for the first RAT. Base station 105-a may transmit, via the second RAT to the UE 115-a, a detach accept message.
  • UE 115-a may initiate a second attach procedure for the first SIM 205 to establish a wireless connection for the first subscription. That is, UE 115-a may transmit an attach request for the first SIM 205 to base station 105-a. Base station 105-a may transmit an attach accept message to UE 115-a in response to the attach request for the first SIM 205. Base station 105-a may additionally send the measurement control for the first RAT again to UE 115-a. UE 115-a, via the first subscription, may perform SCG candidate measurements and send another measurement report to base station 105-a.
  • Base station 105-a may trigger SCG addition for UE 115-a, and UE 115-a may finish the registration for the first RAT.
  • the detach procedure, the attach procedure, the measurement reconfiguration signaling, the measurement release, measurement report, and SCG addition signaling may be sent via the LTE connection of the first subscription.
  • FIG. 3 illustrates an example of a process flow 300 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the process flow 300 may implement aspects of wireless communications system 100.
  • the process flow 300 includes UE 115-b and base station 105-b.
  • UE 115-b may be an example of a dual-SIM UE 115, including a first SIM 305 and a second SIM 310.
  • base station 105-b may provide wireless communications links for a first subscription for the first SIM 305, for a second subscription for the second SIM 310, or for both.
  • the first subscription for the first SIM 305 may be a default data subscription
  • the second subscription for the second SIM 310 may be a non-default data subscription.
  • the first subscription may include a non-standalone subscription for an NR RAT and an LTE RAT.
  • the second subscription may be for the LTE RAT.
  • UE 115-b may send (e.g., via the first subscription for the first SIM 305) an attach request (e.g., a non-standalone registration message) to base station 105-b indicating that the first subscription is capable of operating using a first RAT.
  • base station 105-b may transmit an attach accept message in response to the attach request and finish the attach procedure.
  • base station 105-b may send a measurement control configuration for the first RAT to UE 115-b.
  • UE 115-b may send a non-standalone subscription measurement report for the first RAT to base station 105-b, and base station 105-b may remove the measurement configuration for the first RAT at 335.
  • the network via base station 105-b, may start an SCG addition procedure for the first subscription at 340.
  • the second subscription may begin registration or an attach procedure.
  • registration may have a higher priority for radio resources, so the first subscription may lose the radio frequency resource.
  • the second subscription may begin an attach procedure for the second RAT, or an LTE attach procedure. That is, UE 115-b may transmit (e.g., via the second subscription for the second SIM 310) an attach request for the second RAT.
  • Base station 105-b may transmit an attach accept message in response to the attach request and finish the attach procedure at 355.
  • the SCG addition procedure for the first subscription may fail at 350.
  • the first subscription may report the SCG addition failure to base station 105-b.
  • a UE 115 may then not be able to access the first RAT for an extended period of time.
  • UE 115-b may implement techniques described herein to recover the first RAT for the first subscription.
  • UE 115-b may check the SCG failure reason.
  • UE 115-b may identify that the failure of the connection configuration by the first subscription is due to a radio resource conflict with the second subscription.
  • the UE 115-b may identify a non-standalone sub 5G registration failure, and may use the techniques described herein to recover from such failure.
  • UE 115-b may initiate a detach procedure for the first RAT based on identifying the failure of the connection configuration by the first subscription is due to a radio resource conflict with the second subscription. For example, UE 115-b may transmit, to base station 105-b, a detach request for the first RAT at 370. At 375, base station 105-b may transmit, to UE 115-b, a detach response corresponding to the first RAT based on the detach request. In some cases, performing the detach procedure for the first RAT may deactivate a context bearer for the first RAT.
  • UE 115-b may initiate an attach procedure for the first RAT using the second RAT. For example, at 380 UE 115-b may transmit, to base station 105-b using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT. At 385, base station 105-b may transmit, to UE 115-b, an attach accept message (e.g., an attach response) . In some cases, performing the attach procedure for the first RAT may activate a context bearer for the first RAT connection.
  • an attach accept message e.g., an attach response
  • UE 115-b may receive, from base station 105-b, a measurement configuration for the first RAT based on the attach procedure.
  • UE 115-b may transmit, to base station 105-b, a measurement report based on the measurement configuration.
  • UE 115-b may receive a measurement release for the first RAT from base station 105-b at 395.
  • UE 115-b may receive, from base station 105-b, a connection configuration based on the measurement report.
  • the connection configuration may be, for example, an RRC connection reconfiguration message that instructs the UE 115-b to add a SCG for NR.
  • UE 115-b may transmit a connection setup message for the first RAT to base station 105-b at 398.
  • the connection configuration may include the measurement release (e.g., instead of the measurement release received by UE 115-b at 395) .
  • the connection configuration may be an RRC connection reconfiguration that indicate to add an SCG corresponding to the first RAT.
  • UE 115-b via its first subscription on its first SIM 305, may perform a connection setup procedure with base station 105-b to add the SCG and establish a connection for the first RAT (e.g., the NR RAT) .
  • the established connection may then be used for communication via the first RAT between UE 115-b and base station 105-b.
  • the techniques described herein may enable UE 115-b to identify a reason for SCG failure and establish service for a corresponding RAT (e.g., NR service) in a timely manner.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports fast resumption of network service in case of radio resource conflict 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 first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription.
  • 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 fast resumption of network service in case of radio resource conflict, 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 transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription, transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request, and establish, with the base station, a connection using the first RAT based on the attach request.
  • 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 digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (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.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • 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.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports fast resumption of network service in case of radio resource conflict 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 first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription.
  • the device 505 may include a receiver 510, a communications manager 515, and a transmitter 535.
  • 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 fast resumption of network service in case of radio resource conflict, 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 detachment manager 520, an attachment manager 525, and a first RAT connection component 530.
  • the communications manager 515 may be an example of aspects of the communications manager 710 described herein.
  • the detachment manager 520 may transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription.
  • the attachment manager 525 may transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request.
  • the first RAT connection component 530 may establish, with the base station, a connection using the first RAT based on the attach request.
  • the transmitter 535 may transmit signals generated by other components of the device 505.
  • the transmitter 535 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 535 may be an example of aspects of the transceiver 720 described with reference to FIG. 7.
  • the transmitter 535 may utilize a single antenna or a set of antennas.
  • FIG. 6 shows a block diagram 600 of a communications manager 605 that supports fast resumption of network service in case of radio resource conflict 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 detachment manager 610, an attachment manager 615, a first RAT connection component 620, a measurement component 625, and a second RAT connection component 630. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the detachment manager 610 may transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription.
  • the first RAT may be an NR RAT and the second RAT may be an LTE RAT.
  • the detachment manager 610 may receive a detach response corresponding to the first RAT based on the detach request.
  • the detachment manager 610 may deactivate a context of a bearer for the first RAT based on transmitting the detach request.
  • the attachment manager 615 may transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request. In some examples, the attachment manager 615 may receive an attach response corresponding to the first RAT based on the attach request. In some cases, the attachment manager 615 may establish a context of a bearer for the connection based on transmitting the attach request.
  • the first RAT connection component 620 may establish, with the base station, a connection using the first RAT based on the attach request.
  • the first RAT connection component 620 may receive, from the base station, a connection configuration based on the measurement report.
  • the first RAT connection component 620 may transmit, to the base station, a connection setup message based on the connection configuration, where the connection is established using the first RAT based on the connection setup message.
  • the first RAT connection component 620 may receive the connection configuration that is an RRC connection reconfiguration that indicates to add an SCG corresponding to the first RAT.
  • the measurement component 625 may receive a measurement configuration for the first RAT. In some examples, the measurement component 625 may transmit, to the base station, a measurement report corresponding to the first RAT based on the measurement configuration. In some cases, the measurement component 625 may receive, from the base station, a measurement release for the first RAT based on transmitting the measurement report.
  • the second RAT connection component 630 may initiate a registration procedure with the base station via the second RAT on the second subscription.
  • the second RAT connection component 630 may add an SCG corresponding to the first RAT on the first subscription prior to completion of the registration procedure on the second subscription that causes the radio resource conflict.
  • FIG. 7 shows a diagram of a system 700 including a device 705 that supports fast resumption of network service in case of radio resource conflict 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 a first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription.
  • 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 transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription, transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request, and establish, with the base station, a connection using the first RAT based on the attach request.
  • 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 random-access memory (RAM) and read-only memory (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 basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic input/output system
  • 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 fast resumption of network service in case of radio resource conflict) .
  • 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 block diagram 800 of a device 805 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the device 805 may be an example of aspects of a base station 105 as described herein.
  • the device 805 may operate using a second RAT.
  • the device 805 may include a receiver 810, a communications manager 815, and a transmitter 820.
  • the device 805 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 810 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 fast resumption of network service in case of radio resource conflict, etc. ) . Information may be passed on to other components of the device 805.
  • the receiver 810 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11.
  • the receiver 810 may utilize a single antenna or a set of antennas.
  • the communications manager 815 may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT, receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request, and establish, with the UE, a connection using the first RAT based on the attach request.
  • the communications manager 815 may be an example of aspects of the communications manager 1110 described herein.
  • the communications manager 815 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 815, 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 815 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 815, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 815, 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 820 may transmit signals generated by other components of the device 805.
  • the transmitter 820 may be collocated with a receiver 810 in a transceiver module.
  • the transmitter 820 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11.
  • the transmitter 820 may utilize a single antenna or a set of antennas.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the device 905 may be an example of aspects of a device 805, or a base station 105 as described herein.
  • the device 905 may operate using a second RAT.
  • the device 905 may include a receiver 910, a communications manager 915, and a transmitter 935.
  • the device 905 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 910 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 fast resumption of network service in case of radio resource conflict, etc. ) . Information may be passed on to other components of the device 905.
  • the receiver 910 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • the communications manager 915 may be an example of aspects of the communications manager 815 as described herein.
  • the communications manager 915 may include a detachment manager 920, an attachment manager 925, and a first RAT connection component 930.
  • the communications manager 915 may be an example of aspects of the communications manager 1110 described herein.
  • the detachment manager 920 may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT.
  • the attachment manager 925 may receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request.
  • the first RAT connection component 930 may establish, with the UE, a connection using the first RAT based on the attach request.
  • the transmitter 935 may transmit signals generated by other components of the device 905.
  • the transmitter 935 may be collocated with a receiver 910 in a transceiver module.
  • the transmitter 935 may be an example of aspects of the transceiver 1120 described with reference to FIG. 11.
  • the transmitter 935 may utilize a single antenna or a set of antennas.
  • FIG. 10 shows a block diagram 1000 of a communications manager 1005 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the communications manager 1005 may be an example of aspects of a communications manager 815, a communications manager 915, or a communications manager 1110 described herein.
  • the communications manager 1005 may include a detachment manager 1010, an attachment manager 1015, a first RAT connection component 1020, and a measurement component 1025. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the detachment manager 1010 may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT.
  • the first RAT may be an NR RAT and the second RAT may be an LTE RAT.
  • the detachment manager 1010 may transmit a detach response corresponding to the first RAT based on the detach request.
  • the detachment manager 1010 may deactivate a context of a bearer for the first RAT based on receiving the detach request.
  • the attachment manager 1015 may receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request. In some examples, the attachment manager 1015 may transmit an attach response corresponding to the first RAT based on the attach request. In some cases, the attachment manager 1015 may establish a context of a bearer for the connection based on receiving the attach request.
  • the first RAT connection component 1020 may establish, with the UE, a connection using the first RAT based on the attach request. In some examples, the first RAT connection component 1020 may transmit a connection configuration based on the measurement report. In some cases, the first RAT connection component 1020 may receive a connection setup message based on the connection configuration, where the connection is established using the first RAT based on the connection setup message. In some instances, the first RAT connection component 1020 may transmit the connection configuration that is an RRC connection reconfiguration that indicates to add an SCG corresponding to the first RAT.
  • the measurement component 1025 may transmit a measurement configuration for the first RAT. In some examples, the measurement component 1025 may receive a measurement report corresponding to the first RAT based on the measurement configuration. In some cases, the measurement component 1025 may transmit a measurement release for the first RAT based on receiving the measurement report.
  • FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the device 1105 may be an example of or include the components of device 805, device 905, or a base station 105 as described herein.
  • the device 1105 may operate using a second RAT.
  • the device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1110, a network communications manager 1115, a transceiver 1120, an antenna 1125, memory 1130, a processor 1140, and an inter-station communications manager 1145. These components may be in electronic communication via one or more buses (e.g., bus 1150) .
  • buses e.g., bus 1150
  • the communications manager 1110 may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT, receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request, and establish, with the UE, a connection using the first RAT based on the attach request.
  • the network communications manager 1115 may manage communications with the core network (e.g., via one or more wired backhaul links) .
  • the network communications manager 1115 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the transceiver 1120 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1120 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1120 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 1125. However, in some cases the device may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1130 may include RAM, ROM, or a combination thereof.
  • the memory 1130 may store computer-readable code 1135 including instructions that, when executed by a processor (e.g., the processor 1140) cause the device to perform various functions described herein.
  • the memory 1130 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 1140 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 1140 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1140.
  • the processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting fast resumption of network service in case of radio resource conflict) .
  • the inter-station communications manager 1145 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1145 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager 1145 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.
  • the code 1135 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1135 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1135 may not be directly executable by the processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 12 shows a flowchart illustrating a method 1200 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the operations of method 1200 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1200 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 include a first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription.
  • the UE may transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription.
  • the operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be performed by a detachment manager as described with reference to FIGs. 4 through 7.
  • the UE may transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request.
  • the operations of 1210 may be performed according to the methods described herein. In some examples, aspects of the operations of 1210 may be performed by an attachment manager as described with reference to FIGs. 4 through 7.
  • the UE may establish, with the base station, a connection using the first RAT based on the attach request.
  • the operations of 1215 may be performed according to the methods described herein. In some examples, aspects of the operations of 1215 may be performed by a first RAT connection component as described with reference to FIGs. 4 through 7.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the operations of method 1300 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1300 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.
  • a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may include a first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription.
  • the UE may transmit, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription.
  • the operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be performed by a detachment manager as described with reference to FIGs. 4 through 7.
  • the UE may receive a detach response corresponding to the first RAT based on the detach request.
  • the operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be performed by a detachment manager as described with reference to FIGs. 4 through 7.
  • the UE may transmit, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request.
  • the operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be performed by an attachment manager as described with reference to FIGs. 4 through 7.
  • the UE may receive an attach response corresponding to the first RAT based on the attach request.
  • the operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be performed by an attachment manager as described with reference to FIGs. 4 through 7.
  • the UE may establish, with the base station, a connection using the first RAT based on the attach request.
  • the operations of 1325 may be performed according to the methods described herein. In some examples, aspects of the operations of 1325 may be performed by a first RAT connection component as described with reference to FIGs. 4 through 7.
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the operations of method 1400 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1400 may be performed by a communications manager as described with reference to FIGs. 8 through 11.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below.
  • a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may operate using a second RAT.
  • the base station may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT.
  • the operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed by a detachment manager as described with reference to FIGs. 8 through 11.
  • the base station may receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request.
  • the operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed by an attachment manager as described with reference to FIGs. 8 through 11.
  • the base station may establish, with the UE, a connection using the first RAT based on the attach request.
  • the operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed by a first RAT connection component as described with reference to FIGs. 8 through 11.
  • FIG. 15 shows a flowchart illustrating a method 1500 that supports fast resumption of network service in case of radio resource conflict in accordance with aspects of the present disclosure.
  • the operations of method 1500 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1500 may be performed by a communications manager as described with reference to FIGs. 8 through 11.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below.
  • a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may operate using a second RAT.
  • the base station may receive, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT.
  • the operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed by a detachment manager as described with reference to FIGs. 8 through 11.
  • the base station may transmit a detach response corresponding to the first RAT based on the detach request.
  • the operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed by a detachment manager as described with reference to FIGs. 8 through 11.
  • the base station may receive, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request.
  • the operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed by an attachment manager as described with reference to FIGs. 8 through 11.
  • the base station may establish, with the UE, a connection using the first RAT based on the attach request.
  • the operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed by a first RAT connection component as described with reference to FIGs. 8 through 11.
  • the base station may transmit an attach response corresponding to the first RAT based on the attach request.
  • the operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be performed by an attachment manager as described with reference to FIGs. 8 through 11.
  • Example 1 is a method of wireless communications by a UE including a first RAT corresponding to a first subscription and a second RAT corresponding to a second subscription, the method including is described.
  • the method may include transmitting, to a base station operating using the second RAT, a detach request for the first RAT based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with the second subscription, transmitting, to the base station operating using the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on transmitting the detach request, and establishing, with the base station, a connection using the first RAT based on the attach request.
  • the method of example 1 may include receiving a detach response corresponding to the first RAT based on the detach request.
  • the method of examples 1–2 may include receiving an attach response corresponding to the first RAT based on the attach request.
  • the method of examples 1–3 may include transmitting, to the base station, a measurement report corresponding to the first RAT based on the measurement configuration.
  • the method of examples 1–4 may include receiving, from the base station, a measurement release for the first RAT based on transmitting the measurement report.
  • the method of examples 1–5 may include receiving, from the base station, a connection configuration based on the measurement report, and transmitting, to the base station, a connection setup message based on the connection configuration, where the connection may be established using the first RAT based on the connection setup message.
  • the method of example 6 may include receiving the connection configuration that may be an RRC connection reconfiguration that indicates to add a secondary cell group corresponding to the first RAT.
  • the method of examples 1–7 may include deactivating a context of a bearer for the first RAT based on transmitting the detach request.
  • the method of examples 1–8 may include establishing a context of a bearer for the connection based on transmitting the attach request.
  • the method of examples 1–9 may include initiating a registration procedure with the base station via the second RAT on the second subscription, and adding a secondary cell group corresponding to the first RAT on the first subscription prior to completion of the registration procedure on the second subscription that causes the radio resource conflict.
  • the first RAT may be an NR RAT and the second RAT may be an LTE RAT for the examples 1–10.
  • Example 12 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 1–11.
  • Example 13 is an apparatus including means for implementing a method or realizing an apparatus as in any of examples 1–11.
  • Example 24 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 1–11.
  • Example 25 is a method of wireless communications by a base station operating using a second RAT is described.
  • the method may include receiving, from a UE, a detach request for a first RAT corresponding to a first subscription of the UE based on identification that failure of a connection configuration by the first subscription is due to a radio resource conflict with a second subscription of the UE that corresponds to the second RAT, receiving, from the UE via the second RAT, an attach request indicating that the first subscription is capable of operating using the first RAT based on the detach request, and establishing, with the UE, a connection using the first RAT based on the attach request.
  • the method of example 25 may include transmitting a detach response corresponding to the first RAT based on the detach request.
  • the method of examples 25–26 may include transmitting an attach response corresponding to the first RAT based on the attach request.
  • the method of examples 25–27 may include transmitting a measurement configuration for the first RAT, and receiving a measurement report corresponding to the first RAT based on the measurement configuration.
  • the method of examples 25–28 may include transmitting a measurement release for the first RAT based on receiving the measurement report.
  • the method of examples 25–29 may include transmitting a connection configuration based on the measurement report, and receiving a connection setup message based on the connection configuration, where the connection may be established using the first RAT based on the connection setup message.
  • transmitting the connection configuration may include transmitting the connection configuration that may be an RRC connection reconfiguration that indicates to add a secondary cell group corresponding to the first RAT in the method of example 30.
  • the method of examples 25–31 may include deactivating a context of a bearer for the first RAT based on receiving the detach request.
  • the method of examples 25–32 may include establishing a context of a bearer for the connection based on receiving the attach request.
  • the first RAT may be an NR RAT and the second RAT may be an LTE RAT for the examples 25–33.
  • Example 35 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 25–34.
  • Example 36 is an apparatus including means for implementing a method or realizing an apparatus as in any of examples 25–34.
  • Example 37 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 25–34.
  • 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 RAM, 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.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium.
  • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Un équipement utilisateur (UE) peut comprendre une première technologie d'accès radio (RAT) correspondant à un premier abonnement et une seconde RAT correspondant à un second abonnement. Dans certains cas, l'UE peut identifier qu'une défaillance d'une configuration de connexion du premier abonnement est due à un conflit de ressources radio avec le second abonnement. Selon l'invention, l'UE peut transmettre, à une station de base fonctionnant au moyen de la seconde RAT, une demande de détachement pour la première RAT s'il est déterminé que la défaillance était due au conflit de ressources radio avec le second abonnement. L'UE peut ensuite transmettre, à la station de base à l'aide de la seconde RAT, une demande d'attachement indiquant que le premier abonnement est capable de fonctionner à l'aide de la première RAT. L'UE peut établir, avec la station de base, une connexion à l'aide de la première RAT d'après la demande d'attachement.
PCT/CN2020/085784 2020-04-21 2020-04-21 Reprise rapide de service réseau en cas de conflit de ressources radio WO2021212298A1 (fr)

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PCT/CN2020/085784 WO2021212298A1 (fr) 2020-04-21 2020-04-21 Reprise rapide de service réseau en cas de conflit de ressources radio

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PCT/CN2020/085784 WO2021212298A1 (fr) 2020-04-21 2020-04-21 Reprise rapide de service réseau en cas de conflit de ressources radio

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090143095A1 (en) * 2007-11-14 2009-06-04 St Wireless Sa Inter-mode interference prevention in a multimode wireless device
CN102123466A (zh) * 2011-01-18 2011-07-13 华为技术有限公司 多模终端减少频段干扰方法、多模终端及网络设备
US20170118203A1 (en) * 2015-10-27 2017-04-27 Blackberry Limited Handling authentication failures in wireless communication systems
US20170289887A1 (en) * 2014-03-11 2017-10-05 Blackberry Limited Dynamically Managing Band Capability
WO2019217316A1 (fr) * 2018-05-07 2019-11-14 Qualcomm Incorporated Intégration d'intervalle de temps de transmission pour des technologies d'accès radio multiples

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090143095A1 (en) * 2007-11-14 2009-06-04 St Wireless Sa Inter-mode interference prevention in a multimode wireless device
CN102123466A (zh) * 2011-01-18 2011-07-13 华为技术有限公司 多模终端减少频段干扰方法、多模终端及网络设备
US20170289887A1 (en) * 2014-03-11 2017-10-05 Blackberry Limited Dynamically Managing Band Capability
US20170118203A1 (en) * 2015-10-27 2017-04-27 Blackberry Limited Handling authentication failures in wireless communication systems
WO2019217316A1 (fr) * 2018-05-07 2019-11-14 Qualcomm Incorporated Intégration d'intervalle de temps de transmission pour des technologies d'accès radio multiples

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