WO2021223241A1 - Affichage d'icône 5g pour aligner une capacité de réseau à l'aide de mesures de mode inactif - Google Patents

Affichage d'icône 5g pour aligner une capacité de réseau à l'aide de mesures de mode inactif Download PDF

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Publication number
WO2021223241A1
WO2021223241A1 PCT/CN2020/089265 CN2020089265W WO2021223241A1 WO 2021223241 A1 WO2021223241 A1 WO 2021223241A1 CN 2020089265 W CN2020089265 W CN 2020089265W WO 2021223241 A1 WO2021223241 A1 WO 2021223241A1
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WO
WIPO (PCT)
Prior art keywords
frequency
band
serving cell
message
wireless communication
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PCT/CN2020/089265
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English (en)
Inventor
Kuo-Chun Lee
Arvind Vardarajan Santhanam
Peng Cheng
Liping Shen
Subashini Krishnamurthy
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Qualcomm Incorporated
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Priority to PCT/CN2020/089265 priority Critical patent/WO2021223241A1/fr
Publication of WO2021223241A1 publication Critical patent/WO2021223241A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • This application relates to wireless communication systems, and more particularly to providing an indication to a user that a user equipment (UE) may connect to a New Radio (NR) network with the indication being aligned with network capability using idle mode measurements.
  • UE user equipment
  • NR New Radio
  • 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) .
  • multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems, (e.g., a Long Term Evolution (LTE) system) .
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • LTE Long Term Evolution
  • a wireless multiple-access communications system may include a number of base stations (BSs) , each simultaneously supporting communication for multiple communication devices, which may be otherwise known as UE.
  • BSs base stations
  • 5G NR may provide lower latency and a higher bandwidth or throughput then LTE.
  • 5G NR may provide lower latency and a higher bandwidth or throughput then LTE.
  • One approach to providing the improved 5G NR functionalities is to deploy a 5G NR network that is deployed within an LTE network.
  • the 5G NR network may be overlaid on top of the LTE network with overlapping coverage areas, where the 5G NR network and the LTE network may operate over overlapping spectrums.
  • the 5G NR network can be accessed via the LTE network to provide a 5G NR non-standalone (NSA) service.
  • NSA non-standalone
  • a method of wireless communications performed by a wireless communication device includes acquiring, from a first serving cell associated with a first wireless communication network, a frequency list in system information, and determining a first frequency band supported by the first serving cell and a second frequency band supported by one or more second serving cells for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list.
  • the method also includes determining whether the first serving cell supports dual connectivity using a band-frequency combination supported by the wireless communication device based on the first frequency band and the second frequency band, and providing, for display on a display device of the wireless communication device, a first indication of a first service associated with the one or more second serving cells, when the first serving cell supports the dual connectivity using the band-frequency combination supported by the wireless communication device.
  • a user equipment for wireless communication includes a transceiver configured to acquire, from a first serving cell associated with a first wireless communication network, a frequency list in system information.
  • the user equipment includes a processor configured to determine a first frequency band supported by the first serving cell and a second frequency band supported by one or more second serving cells for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list, and determine whether the first serving cell supports dual connectivity using a band-frequency combination supported by the user equipment based on the first frequency band and the second frequency band.
  • the user equipment also includes a user interface configured to provide, for display on a display device of the user equipment, a first indication of a first service associated with the one or more second serving cells, when the first serving cell supports the dual connectivity using the band-frequency combination supported by the user equipment.
  • an apparatus for wireless communication includes means for acquiring, from a first serving cell associated with a first wireless communication network, a frequency list in system information, and means for determining a first frequency band supported by the first serving cell and a second frequency band supported by one or more second serving cells for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list.
  • the apparatus also includes means for determining whether the first serving cell supports dual connectivity using a band-frequency combination supported by the apparatus based on the first frequency band and the second frequency band, and means for providing, for display on a display device of the apparatus, a first indication of a first service associated with the one or more second serving cells, when the first serving cell supports the dual connectivity using the band-frequency combination supported by the apparatus.
  • a computer-readable medium having program code recorded thereon includes code for causing a user equipment (UE) to acquire, from a first serving cell associated with a first wireless communication network, a frequency list in system information, and code for causing the UE to determine a first frequency band supported by the first serving cell and a second frequency band supported by one or more second serving cells for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list.
  • UE user equipment
  • the program code also includes code for causing the UE to determine whether the first serving cell supports dual connectivity using a band-frequency combination supported by the user equipment based on the first frequency band and the second frequency band, and code for causing the UE to provide, for display on a display device of the user equipment, a first indication of a first service associated with the one or more second serving cells, when the first serving cell supports the dual connectivity using the band-frequency combination supported by the user equipment.
  • FIG. 1 illustrates a wireless communication network according to aspects of the present disclosure.
  • FIG. 2 illustrates a simplified diagram of a network system according to aspects of the present disclosure.
  • FIG. 3 illustrates a simplified diagram of a network system having service indication misaligned with network capability according to aspects of the present disclosure.
  • FIG. 4 illustrates a simplified diagram of a network system with radio access network sharing having service indication misaligned with network capability according to aspects of the present disclosure.
  • FIG. 5 illustrates a simplified diagram of a network system having service indication aligned with network capability according to aspects of the present disclosure.
  • FIG. 6 illustrates a call flow for service indication aligned with network capability according to aspects of the present disclosure.
  • FIG. 7 illustrates a simplified diagram of another network system having service indication aligned with network capability according to aspects of the present disclosure.
  • FIG. 8 illustrates a simplified diagram of still another network system having service indication aligned with network capability according to aspects of the present disclosure.
  • FIG. 9 illustrates a simplified diagram of a network system with radio access network sharing having service indication aligned with network capability according to aspects of the present disclosure.
  • FIG. 10 illustrates a call flow for service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • FIG. 11 illustrates another call flow for service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • FIG. 12 illustrates a flow diagram of an exemplary process of service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • FIG. 13 illustrates a call flow for service indication aligned with network capability using an alternative system information block according to aspects of the present disclosure.
  • FIG. 14 illustrates a call flow for service indication aligned with network capability using signal strength coverage information according to aspects of the present disclosure.
  • FIG. 15 illustrates a call flow for service indication aligned with network capability using different types of indications according to aspects of the present disclosure.
  • FIG. 16 illustrates a call flow for service indication aligned with network capability in a connected mode according to aspects of the present disclosure.
  • FIG. 17 illustrates a block diagram of an exemplary user equipment (UE) according to aspects of the present disclosure.
  • FIG. 18 illustrates a block diagram of an exemplary base station (BS) according to aspects of the present disclosure.
  • FIG. 19 illustrates a flow diagram of an exemplary process of service indication with aligned network capability in a network system according to aspects of the present disclosure.
  • FIG. 20 illustrates a flow diagram of an exemplary process of service indication with aligned network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • CDMA code-division multiple access
  • TDMA time-division multiple access
  • FDMA frequency-division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single-carrier FDMA
  • a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA) , CDMA2000, etc.
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • CDMA2000 covers IS-2000, IS-95 and IS-856 standards.
  • a TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM) .
  • GSM Global System for Mobile Communications
  • An OFDMA network may implement a radio technology such as Evolved UTRA (E-UTRA) , Ultra Mobile Broadband (UMB) , IEEE 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDMA, etc.
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDMA
  • UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS) .
  • 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named “3rd Generation Partnership Project” (3GPP) .
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • 3GPP 3rd Generation Partnership Project
  • 3GPP long term evolution (LTE) is a 3GPP project which was aimed at improving the UMTS mobile phone standard.
  • the 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • the present disclosure is concerned with the evolution of wireless technologies from LTE, 4G, 5G, NR, and beyond with shared access to wireless spectrum between networks using a collection of new and different radio access technologies or radio air interfaces.
  • 5G NR networks contemplate diverse deployments, diverse spectrum, and diverse services and devices that may be implemented using an OFDM-based unified, air interface.
  • further enhancements to LTE and LTE-A are considered in addition to development of the new radio technology for 5G NR networks.
  • the 5G NR will be capable of scaling to provide coverage (1) to a massive Internet of things (IoTs) with a ultra-high density (e.g., ⁇ 1M nodes/km 2 ) , ultra-low complexity (e.g., ⁇ 10s of bits/sec) , ultra-low energy (e.g., ⁇ 10+ years of battery life) , and deep coverage with the capability to reach challenging locations; (2) including mission-critical control with strong security to safeguard sensitive personal, financial, or classified information, ultra-high reliability (e.g., ⁇ 99.9999%reliability) , ultra-low latency (e.g., ⁇ 1 ms) , and users with wide ranges of mobility or lack thereof; and (3) with enhanced mobile broadband including extreme high capacity (e.g., ⁇ 10 Tbps/km 2 ) , extreme data rates (e.g., multi-Gbps rate, 100+ Mbps user experienced rates) , and deep awareness with advanced discovery and optimizations.
  • IoTs Internet of things
  • the 5G NR may be implemented to use optimized OFDM-based waveforms with scalable numerology and transmission time interval (TTI) ; having a common, flexible framework to efficiently multiplex services and features with a dynamic, low-latency time division duplex (TDD) /frequency division duplex (FDD) design; and with advanced wireless technologies, such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • TTI transmission time interval
  • MIMO massive multiple input, multiple output
  • mmWave millimeter wave
  • Scalability of the numerology in 5G NR with scaling of subcarrier spacing, may efficiently address operating diverse services across diverse spectrum and diverse deployments.
  • subcarrier spacing may occur with 15 kHz, for example over 5, 10, 20 MHz, and the like bandwidth (BW) .
  • BW bandwidth
  • subcarrier spacing may occur with 30 kHz over 80/100 MHz BW.
  • the subcarrier spacing may occur with 60 kHz over a 160 MHz BW.
  • subcarrier spacing may occur with 120 kHz over a 500 MHz BW.
  • the scalable numerology of the 5G NR facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTI may be used for low latency and high reliability, while longer TTI may be used for higher spectral efficiency.
  • QoS quality of service
  • 5G NR also contemplates a self-contained integrated subframe design with UL/downlink scheduling information, data, and acknowledgement in the same subframe.
  • the self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive UL/downlink that may be flexibly configured on a per-cell basis to dynamically switch between UL and downlink to meet the current traffic needs.
  • a UE may display an indication, such as an icon that indicates which radio access technologies (RATs) the UE can currently use.
  • the icon can indicate a service associated with the RAT.
  • the UE may display an LTE icon.
  • the UE may also perform a measurement and may display a signal strength or quality indicator, such as a number of bars, where an increasing number of bars corresponds to a stronger signal strength.
  • the determination of whether the UE is adapted to use an operator network may be based at least in part on an identifier of the operator network, such as a public mobile land network (PLMN) identifier or a similar identifier. For example, when the UE is registered with a registered PLMN corresponding to a particular operator network, the UE may display an icon for the RAT of the particular operator network based at least in part on determining that the particular operator network is associated with the registered PLMN.
  • PLMN public mobile land network
  • the UE can receive system information, such as a system information block type 2 (SIB2) , which includes an indicator (sometimes referred to as an “UpperLayerIndication (ULI) ” ) that indicates the 5G capabilities for a given PLMN identifier.
  • SIB2 system information block type 2
  • ULI UserLayerIndication
  • the 5G icon can be based on the SIB2 with the ULI indicator.
  • the UE merely obtaining an indication that an LTE anchor cell has 5G capabilities using a locally connected 5G NR cell does not cause the UE to be properly set up for 4G-5G dual connectivity, due to a misalignment between the network and UE capabilities in 4G-5G dual connectivity.
  • the network may support 4G-5G dual connectivity using a particular band-frequency combination, such as a frequency band of operation for the LTE anchor cell and a frequency of operation for the 5G NR cell.
  • a particular band-frequency combination such as a frequency band of operation for the LTE anchor cell and a frequency of operation for the 5G NR cell.
  • the network may support a first band-frequency combination of B1+n5, where B1 is the LTE anchor cell camping frequency band and n5 is the operational frequency of the 5G NR cell.
  • the UE can support a second band-frequency combination of B1+n71, where the UE is camped on the LTE camping frequency band, B1, and n71 is the operational frequency of the UE in a 5G NR network.
  • the SIB2 indicator attempts to indicate that 4G-5G dual connectivity is available, the mismatch between the UE and the network can cause difficulty in allowing the UE to properly obtain 4G-5G dual connectivity and cause inaccurate information to be displayed as part of the service indication display on the UE.
  • the problem can be more sophisticated when the network can support radio access network (RAN) sharing because not all of the NR frequency bands associated with the LTE anchor cell, for example, can be used for the UE in 4G-5G dual connectivity.
  • RAN radio access network
  • the LTE anchor cell may support 4G-5G dual connectivity using band-frequency combinations of B1+n5 and B1+n71, and the UE may support a band-frequency combination of B1+n71.
  • the LTE anchor cell is also associated with multiple PLMN identifiers to indicate that the LTE anchor cell is locally connected to multiple 5G NR cells.
  • a first 5G NR cell may be associated with a first PLMN identifier and a second 5G NR cell may be associated with a second PLMN identifier different from the first PLMN identifier.
  • the UE may be registered with a PLMN identifier that corresponds to the first PLMN identifier.
  • the 5G NR cell with the same registered PLMN identifier as the UE supports a band-frequency combination of B1+n5, which is a mismatch from the band-frequency combination supported by the UE (e.g., B1+n71) .
  • the 5G NR cell with the second PLMN identifier supports the band-frequency combination that corresponds to that of the UE (e.g., B1+n71) , the UE cannot attach to this 5G NR cell due to a differently registered PLMN identifier.
  • the mismatch between the UE and the network with RAN sharing can cause difficulty in allowing the UE to properly obtain 4G-5G dual connectivity and cause inaccurate information to be displayed as part of the service indication display on the UE.
  • the subject technology provides for a network procedure that utilizes downlink signaling involving idle mode measurements that allows expedient secondary cell group (SCG) addition upon connection setup between the UE and the network.
  • the LTE anchor cell may transmit a configuration for idle mode measurements to the UE in an idle mode measurement feature field (may be referred to as “idleModeMeasurements” ) of a system information block, such as a system information block type 2 (SIB2) .
  • This idle mode measurement feature can support the UE to show a 5G icon display that is aligned with the network capability.
  • the subject technology may include a network procedure that enables the LTE anchor cell to include an NR frequency list within a system information block, such as a system information block type 5 (SIB5) .
  • the NR frequency list may be carried on a carrier payload (may be referred to as “measIdleCarrierListNR” ) that is contained within a configuration field (may be referred to as “MeasIdleConfigSIB” ) .
  • the NR frequency list may include the NR frequency and associated frequency band of a 4G-5G dual connectivity frequency combination by which the LTE anchor cell can support for 4G-5G dual connectivity.
  • the SIB2 may not include the configuration for idle mode measurements (by marking the “idleModeMeasurements” as absent) to preclude the UE from performing any idle mode measurements.
  • a system for wireless communications includes a transceiver configured to acquire, from a first serving cell associated with a first wireless communication network, a frequency list in system information.
  • the system includes a processor configured to determine a first frequency band supported by the first serving cell and a second frequency band supported by one or more second serving cells for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list, and determine whether the first serving cell supports dual connectivity using a band-frequency combination supported by the user equipment based on the first frequency band and the second frequency band.
  • the system also includes a user interface configured to provide, for display on a display device of the user equipment, a first indication of a first service associated with the one or more second serving cells, when the first serving cell supports the dual connectivity using the band-frequency combination supported by the user equipment.
  • the subject technology can facilitate discovery of network 4G-5G dual connectivity capabilities within confines of the user equipment capability to display a more accurate 5G icon status instead of relying on a simple SIB2 ULI indicator that may not accurately reflect the UE 4G-5G dual connectivity capabilities.
  • the subject technology can more accurately display the 5G icon in a RAN sharing network environment by discovering the PLMN identifiers of secondary serving cells, such as 5G NR cells, and the associated NR frequency band.
  • the term “4G-5G dual connectivity” can be referred to as Evolved Universal Mobile Telecommunications Service (UMTS) Terrestrial Radio Access Network (E-UTRAN) New Radio –Dual Connectivity (EN-DC) .
  • UMTS Evolved Universal Mobile Telecommunications Service
  • E-UTRAN Terrestrial Radio Access Network
  • EN-DC New Radio –Dual Connectivity
  • a wireless communication device can also be called a system, a subscriber unit, a subscriber station, mobile station, mobile, mobile device, cellular device, multi-mode device, remote station, remote terminal, access terminal, user terminal, user agent, a user device, or user equipment, or the like.
  • a subscriber station can be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) , a handheld device having wireless connection capability, or other processing device connected to a wireless modem or similar mechanism facilitating wireless communication with a processing device.
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • an aspect disclosed herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways.
  • an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein.
  • such an apparatus may be implemented or such a method may be practiced using other structure, functionality, or structure and functionality in addition to or other than one or more of the aspects set forth herein.
  • a method may be implemented as part of a system, device, apparatus, and/or as instructions stored on a computer readable medium for execution on a processor or computer.
  • an aspect may comprise at least one element of a claim.
  • FIG. 1 illustrates a wireless communication network 100 according to aspects of the present disclosure.
  • the network 100 includes BSs 105, UEs 115, and a core network 130.
  • the network 100 operates over a shared spectrum.
  • the shared spectrum may be unlicensed or partially licensed to one or more network operators. Access to the spectrum may be limited and may be controlled by a separate coordination entity.
  • the network 100 may be a LTE or LTE-A network.
  • the network 100 may be a millimeter wave (mmW) network, a 5G NR network, a 5G+ network, an ultra-wideband (UWB) network, or any other successor network to LTE.
  • the network 100 may be operated by more than one network operator. Wireless resources may be partitioned and arbitrated among the different network operators for coordinated communication between the network operators over the network 100.
  • the BSs 105 may wirelessly communicate with the UEs 115 via one or more BS antennas. Each BS 105 may provide communication coverage for a respective geographic coverage area 110.
  • the term “cell” can refer to this particular geographic coverage area of a BS and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.
  • a BS 105 may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cell.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a pico cell may generally cover a relatively smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a femto cell may also generally cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG) , UEs for users in the home, and the like) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • the BSs 105a, 105b and 105c are examples of macro BSs for the coverage areas 110a, 110b and 110c, respectively.
  • the BSs 105d is an example of a pico BS or a femto BS for the coverage area 110d.
  • a BS 105 may support one or multiple (e.g., two, three, four, and the like) cells.
  • Communication links 125 shown in the network 100 may include uplink (UL) transmissions from a UE 115 to a BS 105, or downlink (DL) transmissions, from a BS 105 to a UE 115.
  • the UEs 115 may be dispersed throughout the network 100, and each UE 115 may be stationary or mobile.
  • a UE 115 also may be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
  • a UE 115 also may be a cellular phone, a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a personal electronic device, a handheld device, a personal computer, a wireless local loop (WLL) station, an Internet of things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, an appliance, an automobile, or the like.
  • a UE 115 may be a device that includes a Universal Integrated Circuit Card (UICC) .
  • a UE may be a device that does not include a UICC.
  • UICC Universal Integrated Circuit Card
  • the UEs 115 that do not include UICCs also may be referred to as IoT devices or internet of everything (IoE) devices.
  • the UEs 115a-115d are examples of mobile smart phone-type devices accessing network 100.
  • UEs 115c and 115d are in communication with one another through sidelink transmissions between the UEs 115c and 115d in a coverage area 110f.
  • a UE 115 also may be a machine specifically configured for connected communication, including machine type communication (MTC) , enhanced MTC (eMTC) , narrowband IoT (NB-IoT) and the like.
  • MTC machine type communication
  • eMTC enhanced MTC
  • NB-IoT narrowband IoT
  • the UEs 115e-115h are examples of various machines configured for communication that access the network 100.
  • the UEs 115i-115k are examples of vehicles in coverage area 110e that are equipped with wireless communication devices configured for communication that access the network 100.
  • a UE 115 may be able to communicate with any type of the BSs, whether macro BS, small cell, or the like.
  • a lightning bolt e.g., communication links
  • the network 100 may also support mission critical communications with ultra-reliable and redundant links for mission critical devices, such as the UE 115e, which may be a drone. Redundant communication links with the UE 115e may include links from the macro BS 105c, as well as links from the small cell BS 105f.
  • UE 115f e.g., a thermometer
  • UE 115g e.g., smart meter
  • UE 115h e.g., wearable device
  • the network 100 may also provide additional network efficiency through dynamic, low-latency TDD/FDD communications, such asV2V, V2X, C-V2X communications between a UE 115i, 115j, or 115k and other UEs 115, and/or vehicle-to-infrastructure (V2I) communications between a UE 115i, 115j, or 115k and the BS 105a.
  • V2V dynamic, low-latency TDD/FDD communications
  • V2X V2X
  • C-V2X C-V2X communications between a UE 115i, 115j, or 115k and other UEs 115
  • V2I vehicle-to-infrastructure
  • the BSs 105 may communicate with the core network 130 and with one another.
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • IP Internet Protocol
  • At least some of the BSs 105 e.g., which may be an example of an evolved NodeB (eNB) , a next generation NodeB (gNB) , or an access node controller (ANC)
  • eNB evolved NodeB
  • gNB next generation NodeB
  • ANC access node controller
  • the BSs 105 may communicate, either directly or indirectly (e.g., through core network 130) , with each other over backhaul links 134 (e.g., X1, X2, etc. ) , which may be wired or wireless communication links.
  • backhaul links 134 e.g., X1, X2, etc.
  • Each BS 105 may also communicate with a number of UEs 115 through a number of other BSs 105, where the BS 105 may be an example of a smart radio head.
  • various functions of each BS 105 may be distributed across various BSs 105 (e.g., radio heads and access network controllers) or consolidated into a single BS 105.
  • the network 100 utilizes orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the UL.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, or the like.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the system bandwidth also may be partitioned into subbands.
  • the BSs 105 can assign or schedule transmission resources (e.g., in the form of time-frequency resource blocks) for DL and UL transmissions in the network 100.
  • DL refers to the transmission direction from a BS 105 to a UE 115
  • UL refers to the transmission direction from a UE 115 to a BS 105.
  • the communication can be in the form of radio frames.
  • a radio frame may be divided into a plurality of subframes, for example, about 10.
  • Each subframe can be divided into slots, for example, about 2.
  • Each slot may be further divided into min-slots, as described in greater detail herein.
  • FDD frequency-division duplexing
  • each subframe includes a UL subframe in a UL frequency band and a DL subframe in a DL frequency band.
  • TDD time-division duplexing
  • UL and DL transmissions occur at different time periods using the same frequency band.
  • a subset of the subframes (e.g., DL subframes) in a radio frame may be used for DL transmissions and another subset of the subframes (e.g., UL subframes) in the radio frame may be used for UL transmissions.
  • each DL or UL subframe may have pre-defined regions for transmissions of reference signals, control information, and data.
  • Reference signals are predetermined signals that facilitate the communications between the BSs 105 and the UEs 115.
  • a reference signal can have a particular pilot pattern or structure, where pilot tones may span across an operational bandwidth or frequency band, each positioned at a pre-defined time and a pre-defined frequency.
  • a BS 105 may transmit cell-specific reference signals (CRSs) and/or channel state information –reference signals (CSI-RSs) to enable a UE 115 to estimate a DL channel.
  • CRSs cell-specific reference signals
  • CSI-RSs channel state information –reference signals
  • a UE 115 may transmit sounding reference signals (SRSs) to enable a BS 105 to estimate a UL channel.
  • Control information may include resource assignments and protocol controls.
  • Data may include protocol data and/or operational data.
  • the BSs 105 and the UEs 115 may communicate using self-contained subframes.
  • a self-contained subframe may include a portion for DL communication and a portion for UL communication.
  • a self-contained subframe can be DL-centric or UL-centric.
  • a DL-centric subframe may include a longer duration for DL communication than UL communication.
  • a UL-centric subframe may include a longer duration for UL communication than UL communication.
  • the network 100 may be an 5G NR network deployed over a licensed spectrum.
  • the BSs 105 can transmit synchronization signals (e.g., including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) ) in the network 100 to facilitate synchronization.
  • the BSs 105 can broadcast system information associated with the network 100 (e.g., including a master information block (MIB) , remaining system information (RMSI) , and other system information (OSI) ) to facilitate initial network access.
  • MIB master information block
  • RMSI remaining system information
  • OSI system information
  • the BSs 105 may broadcast the PSS, the SSS, and/or the MIB in the form of synchronization signal block (SSBs) over a physical broadcast channel (PBCH) and may broadcast the RMSI and/or the OSI over a physical downlink shared channel (PDSCH) .
  • PBCH physical broadcast channel
  • PDSCH physical downlink shared channel
  • a UE 115 attempting to access the network 100 may perform an initial cell search by detecting a primary synchronization signal (PSS) from a BS 105.
  • PSS primary synchronization signal
  • the PSS may enable synchronization of period timing and may indicate a sector identity value (e.g., 0, 1, 2, etc. ) .
  • the UE 115 may then receive a secondary synchronization signal (SSS) .
  • SSS secondary synchronization signal
  • the SSS may enable radio frame synchronization, and may provide a cell identity value, which may be combined with the PSS identity value to identify the physical cell identity.
  • the SSS may also enable detection of a duplexing mode and a cyclic prefix length. Both the PSS and the SSS may be located in a central portion of a carrier, respectively.
  • the UE 115 may receive a master information block (MIB) , which may be transmitted in the physical broadcast channel (PBCH) .
  • the MIB may contain system bandwidth information, a system frame number (SFN) , and a Physical Hybrid-ARQ Indicator Channel (PHICH) configuration.
  • SIBs system information blocks
  • SIB1 may contain cell access parameters and scheduling information for other SIBs. Decoding SIB1 may enable the UE 115 to receive SIB2.
  • SIB2 may contain radio resource configuration (RRC) configuration information related to random access channel (RACH) procedures, paging, physical uplink control channel (PUCCH) , physical uplink shared channel (PUSCH) , power control, SRS, and cell barring.
  • RRC radio resource configuration
  • the UE 115 can perform random access procedures to establish a connection with the BS 105.
  • the UE 115 and the BS 105 can enter a normal operation stage, where operational data may be exchanged.
  • the BS 105 may schedule the UE 115 for UL and/or DL communications.
  • the BS 105 may transmit UL and/or DL scheduling grants to the UE 115 via a PDCCH.
  • the scheduling grants may be transmitted in the form of DL control information (DCI) .
  • the BS 105 may transmit a DL communication signal (e.g., carrying data) to the UE 115 via a PDSCH according to a DL scheduling grant.
  • the UE 115 may transmit a UL communication signal to the BS 105 via a PUSCH and/or PUCCH according to a UL scheduling grant.
  • the network 100 may support sidelink communication among the UEs 115 over a shared radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) .
  • the UEs 115 may communicate with each other over a 2.4 GHz unlicensed band, which may be shared by multiple network operating entities using various radio access technologies (RATs) such as NR-U, WiFi, and/or licensed-assisted access (LAA) .
  • RATs radio access technologies
  • NR-U NR-U
  • WiFi WiFi
  • LAA licensed-assisted access
  • the UEs 115 and the BSs 105 may be operated by multiple network operators or network operating entities and may operate in a shared radio frequency spectrum, which may include licensed or unlicensed frequency bands.
  • the shared spectrum may be time-partitioned for sharing among the multiple network operating entities to facilitate coordinated communication.
  • the BS 105a and the UE 115a may be associated with one network operating entity, while the BS 105b and the UE 115b may be associated with another network operating entity.
  • the communications between the BS 105a and the UE 115a and the communications between the BS 105b and the UE 115b may each occur during respective time periods and may avail themselves of an entirety of a designated shared spectrum.
  • the network 100 may support multiple networks with different RAT technologies.
  • the network 100 may be initially deployed as an LTE network and subsequently add advanced RAT technologies such as 5G NR to provide improved network functionalities, such as lower latency, greater bandwidth, and/or higher throughput.
  • advanced RAT technologies such as 5G NR
  • the UE 115 includes a transceiver configured to acquire, from a first serving cell (e.g., 105c) associated with a first wireless communication network, a frequency list in system information.
  • the UE 115 also includes a processor configured to determine a first frequency band supported by the first serving cell (e.g., 105c) and a second frequency band supported by one or more second serving cells (e.g. 105b) for dual connectivity with the first wireless communication network and a second wireless communication network, from the frequency list.
  • the UE 115 may be adapted to determine whether the first serving cell (e.g., 105c) supports dual connectivity using a band-frequency combination supported by the UE 115 based on the first frequency band and the second frequency band.
  • the UE 115 also includes a user interface configured to provide, for display on a display device of the UE 115, a first indication of a first service associated with the one or more second serving cells (e.g., 105b) , when the first serving cell (e.g., 105c) supports the dual connectivity using the band-frequency combination supported by the UE 115.
  • a user interface configured to provide, for display on a display device of the UE 115, a first indication of a first service associated with the one or more second serving cells (e.g., 105b) , when the first serving cell (e.g., 105c) supports the dual connectivity using the band-frequency combination supported by the UE 115.
  • FIG. 2 illustrates a network system 200 according to aspects of the present disclosure.
  • the system 200 may correspond to a portion of the network 100 and include an LTE-NR tight interworking architecture with dual connectivity.
  • the 5G NR network may be unstable because it does not have ubiquitous coverage and has small cell radius. To overcome this problem, it may be desirable for a UE 115 to connect to both the LTE network and the 5G NR network. In an instance, the 5G NR network may be overlaid over the LTE network.
  • the UE 202 supports dual connectivity, which allows the UE 202 to connect to both the LTE and 5G NR network simultaneously.
  • the UE 202 supports a non-standalone mode that utilizes the LTE network to support the connectivity of the UE 202 to the 5G NR network.
  • the 5G NR network may be a “best effort” network that is anchored in the LTE network. For example, if the UE 202 is within 5G NR network coverage, the UE 202 can use the 5G NR network to transmit data. In this example, the UE 202 harnesses the lower latency, greater bandwidth, and/or higher throughput offered by the 5G NR network, while leveraging the stable links provided by the LTE network. If the connection to the 5G NR network is not stable or is weak, the UE 202 may connect to the LTE network without connecting to the 5G NR network.
  • the UE 202 may transmit data using an Evolved Packet Core (EPC) 204, which is the core network of the LTE system.
  • the EPC 204 includes a Mobility Management Entity (MME) 205 and a P/SGW 207.
  • the data traffic may be split.
  • the UE 202 may transmit LTE Radio Link Control (RLC) /Media Access Control (MAC) 206 to an eNB 208 and transmit NR RLC/MAC 210 and LTE/NR Packet Data Convergence Protocol (PDCP) 212 to the gNB 214.
  • RLC Radio Link Control
  • MAC Media Access Control
  • PDCP LTE/NR Packet Data Convergence Protocol
  • a split bearer may be located at the gNB 214, and the data sent to the eNB 208 can be merged at the gNB 214 with other data.
  • the gNB 214 may aggregate the data and send it to the P/SGW 207 using the S1-U interface. Additionally, signaling information may pass through the eNB 208 to the MME 205 using the S1-MME interface.
  • the eNB 208 may include an interface to the P/SGW 207 using the S1-U interface. In some aspects, the eNB 208 and the gNB 214 communicate with another using the X2-U interface.
  • FIG. 2 illustrates an LTE-NR/EPC system, this is not intended to be limiting and other instances may include different systems. For example, in another instance, the system may include an LTE-NR/NGC system.
  • the UE 202 may be in at most one state of a plurality of states. If the UE 202 is connected to a first wireless communication network (e.g., 5G NR network, etc. ) and a second wireless communication network (e.g., LTE network, 4G network, etc. ) simultaneously, the UE 202 may be in a first connected mode. In this example, the UE 202 may be connected to both the 5G NR network and the LTE network. The LTE network may be associated with an LTE anchor cell, and the 5G NR network may be associated with a 5G NR cell. If the UE 202 is connected to the second network, but not the first network, the UE 202 may be in a second connected mode.
  • a first wireless communication network e.g., 5G NR network, etc.
  • LTE network Long NR network
  • 4G network 4G network
  • the UE 202 may be connected to the LTE network, but not to the 5G NR network. If the UE 202 is idle, the UE 202 may be in an idle mode connected to the second network, but not the first network. In this example, the UE 202 may be camped on the LTE anchor cell in the LTE network. The UE 202 may be in the idle mode if the UE 202 has no data to transmit or is not receiving data from another device. If the UE 202 is in the second connected mode or the idle mode, the UE 202 may monitor the LTE network, not the 5G NR network.
  • the eNB 208 may perform a procedure that adds the gNB 214 as part of a secondary cell group (SCG) , where the eNB 208 is part of a master cell group (MCG) .
  • SCG secondary cell group
  • MCG master cell group
  • the eNB 208 is a master base station and the gNB 214 is a secondary base station.
  • FIG. 3 illustrates a simplified diagram of a network system 300 having service indication misaligned with network capability according to aspects of the present disclosure.
  • the network system 300 includes a wireless communication device, such as UE 302, in communication with a first serving cell, such as eNB 308.
  • the eNB 308 is locally connected to a secondary serving cell, such as gNB 314.
  • the eNB 308 may transmit downlink signaling, such as a system information block type 2 (SIB2) containing system information.
  • SIB2 system information block type 2
  • the UE 302 can receive the system information in the SIB2, which may include an indicator (sometimes referred to as an “UpperLayerIndication (ULI) ” ) that indicates the 5G capabilities for a given PLMN identifier.
  • an indicator sometimes referred to as an “UpperLayerIndication (ULI) ”
  • the 5G icon can be based on the SIB2 with the ULI indicator.
  • the UE 302 merely obtaining an indication that eNB 308 has 5G capabilities using the locally-connected gNB 314 does not cause the UE 302 to be properly set up for 4G-5G dual connectivity, due to a misalignment between the eNB 308 and the UE 302 capabilities in 4G-5G dual connectivity.
  • the eNB 308 may support 4G-5G dual connectivity using a particular band-frequency combination, such as a frequency band of operation for the eNB 308 and a frequency of operation for the gNB 314.
  • the eNB 308 may support a first band-frequency combination of B1+n5, where B1 is the camping frequency band of the eNB 308 and n5 is the operational frequency of the gNB 314.
  • the UE 302 can support a second band-frequency combination of B1+n71, where the UE 302 is camped on the camping frequency band, B1, and n71 is the operational frequency of the UE 302 in a 5G NR network.
  • the SIB2 indicator attempts to indicate that 4G-5G dual connectivity is available to the UE 302, the mismatch between the UE 302 and the eNB 308 can cause difficulty in allowing the UE 302 to properly obtain 4G-5G dual connectivity and cause inaccurate information to be displayed as part of the service indication display on the UE 302.
  • FIG. 4 illustrates a simplified diagram of a network system 400 with radio access network sharing having service indication misaligned with network capability according to aspects of the present disclosure.
  • the network system 400 includes a wireless communication device, such as UE 402, in communication with a first serving cell, such as eNB 408.
  • the eNB 408 is locally connected to secondary serving cells, such as gNB 414 and gNB 424.
  • the eNB 408 may transmit downlink signaling, such as a system information block type 1 (SIB1) containing a PLMN identity list of the eNB 408.
  • SIB1 system information block type 1
  • Complications may arise when the eNB 408 can support RAN sharing because not all of the NR frequency bands associated with the eNB 408 can be used for the UE 402 in 4G-5G dual connectivity.
  • a 5G NR cell e.g., gNB 424 in a home PLMN (or roaming PLMN) for the UE 402 does not support the 4G-5G dual connectivity band-frequency combination of the UE capability, then the UE 402 may not have proper operation with 4G-5G dual connectivity.
  • the eNB 408 may support 4G-5G dual connectivity using band-frequency combinations of B1+n5 and B1+n71, and the UE 402 may support a band-frequency combination of B1+n71.
  • the eNB 408 is also associated with multiple PLMN identifiers to indicate that the eNB 408 is locally connected to multiple 5G NR cells (e.g., gNB 414, gNB 424) .
  • the gNB 424 with the same registered PLMN identifier as the UE 402 supports a band-frequency combination of B1+n5, which is a mismatch from the band-frequency combination supported by the UE 402 (e.g., B1+n71) .
  • PLMN ID Y
  • the UE 402 may not attach to gNB 414 due to a differently registered PLMN identifier.
  • the mismatch between the UE 402 and the eNB 408 with RAN sharing can cause difficulty in allowing the UE 402 to properly obtain 4G-5G dual connectivity and cause inaccurate information to be displayed as part of the service indication display on the UE 402.
  • FIG. 5 illustrates a simplified diagram of a network system 500 having service indication aligned with network capability according to aspects of the present disclosure.
  • the network system 500 includes a wireless communication device, such as UE 502, in communication with a first serving cell, such as eNB 508.
  • the eNB 508 is locally connected to a secondary serving cell, such as gNB 514.
  • the eNB 508 may transmit downlink signaling 520, such as a system information block type 2 (SIB2) message 522 containing system information.
  • SIB5 system information block type 524.
  • the network system 500 can follow a network procedure that utilizes downlink signaling involving idle mode measurements that allows expedient secondary cell group (SCG) addition upon connection setup between the UE 502 and the eNB 508.
  • the eNB 508 may transmit a configuration for idle mode measurements to the UE 502 in an idle mode measurement feature field (may be referred to as “idleModeMeasurements” ) of the SIB2 message 522.
  • This idle mode measurement feature can support the UE 502 to show a 5G icon display that is aligned with the network capability.
  • the subject technology may include a network procedure that enables the eNB 508 to include an NR frequency list within the SIB5 message 524.
  • the NR frequency list may be carried on a carrier payload (may be referred to as “measIdleCarrierListNR” ) that is contained within a configuration field (may be referred to as “MeasIdleConfigSIB” ) .
  • the NR frequency list may include the NR frequency and associated frequency band of a 4G-5G dual connectivity frequency combination by which the eNB 508 can support for 4G-5G dual connectivity.
  • the SIB2 message 522 may not include the configuration for idle mode measurements (by marking the “idleModeMeasurements” as absent) to preclude the UE 502 from performing any idle mode measurements.
  • the UE 502 may be adapted to operate in a non-standalone mode, in which the UE 502 may utilize the eNB 508 associated with a first wireless communication network (e.g., LTE network) to access a first service associated with a second wireless communication network (e.g., 5G NR network) and the gNB 514 associated with the second wireless communication network to support a connectivity of the UE 502 to the first service via the eNB 508.
  • a first wireless communication network e.g., LTE network
  • a second wireless communication network e.g., 5G NR network
  • the UE 502 can acquire, from the eNB 508, the NR frequency list from the SIB5 message 524.
  • the UE 502 can determine a first frequency band (e.g., B1) supported by the eNB 508 and a second frequency band supported by the gNB 514 for dual connectivity with the first wireless communication network (e.g., LTE) and a second wireless communication network (e.g., 5G NR) , from the NR frequency list.
  • the UE 502 can determine whether the eNB 508 supports dual connectivity using a band-frequency combination supported by the 502 based on the first frequency band and the second frequency band.
  • the UE 502 may support a band-frequency combination of B1+n71 and the eNB 508 may support band-frequency combinations B1+n5 and B1+n41.
  • the band-frequency combination supported by the UE 502 is a mismatch from the band-frequency combinations supported by the eNB 508.
  • the UE 502 does not have 4G-5G capability.
  • the UE 502 can provide, for display on a display device of the UE 502, a first indication of a first service associated with the eNB 508, when the eNB 508 does not support the 4G-5G dual connectivity within the UE 502 capability.
  • the UE 502 may display a 4G icon to denote the LTE network access provided via the eNB 508.
  • the UE 502 may display a 5G icon to denote the 5G NR network access provided via the eNB 508 and gNB 514.
  • FIG. 6 illustrates a call flow 600 for service indication aligned with network capability according to aspects of the present disclosure.
  • the call flow 600 illustrates a message exchange between UE 610 and LTE anchor cell 620.
  • the UE 610 includes a receiver 612 and UI 614.
  • the UE 610 operates in an idle mode 616.
  • the UE 610 can operate in the idle mode 616 by camping on the LTE anchor cell 620, in which the UE 610 can receive the SIB5 message 624 with the receiver 612 over a downlink broadcast channel when the 610 is operating in the idle mode 616.
  • the LTE anchor cell 620 transmits a SIB2 message 622 with an indication of whether an idle mode measurement feature is present to trigger the UE 610 to perform idle mode measurements.
  • the UE 610 can acquire the NR frequency list from the SIB5 message 624 when the idle mode measurement feature is absent from the SIB2 message 622.
  • the NR frequency list can be acquired from the SIB5 message when the idle mode measurement feature is present in the SIB2 message 622.
  • the SIB2 message 622 includes radio resource configuration information that indicates capability to support dual connectivity with the first wireless communication network and the second wireless communication network.
  • the LTE cell 620 also transmits a SIB5 message 624 including an NR frequency list.
  • the NR frequency list may include one or more NR frequencies in which the 5G NR network operates.
  • the LTE cell 620 may broadcast the SIB2 message 622 and the SIB5 message 624.
  • the SIB5 message 624 may be received in a same broadcast system information message with the SIB2 message 622.
  • the SIB5 message 624 may be received subsequent to the SIB2 message 622 over different broadcast system information messages.
  • the SIB2 message 622 may be received in a downlink broadcast channel and the SIB5 message 624 may be received in a radio resource configuration (RRC) connection reconfiguration message (not shown) .
  • the UE 610 can receive, with the receiver 611 from the LTE anchor cell 620, a RRC connection reconfiguration message for setting up 4G-5G dual connectivity with the first wireless communication network and the second wireless communication network.
  • the UE 610 can transmit, to the 5G NR cell 630, a RRC connection reconfiguration complete message based on the RRC connection reconfiguration message for establishing a connection to the second wireless communication network.
  • the UE 610 can acquire, with the receiver 612 from the LTE anchor cell 620 associated with a first wireless communication network, the NR frequency list from the system information contained in the SIB5 message 624.
  • the UE 610 can determine a first frequency band supported by the LTE anchor cell 620 and a second frequency band supported by the 5G NR cell 630 for dual connectivity with the first wireless communication network and a second wireless communication network, from the NR frequency list.
  • the UE 610 can determine whether the LTE anchor cell 620 can support dual connectivity using a frequency combination supported by the UE 610 based on the first frequency band and the second frequency band.
  • the UE 610 can determine that the first serving cell supports the dual connectivity using the frequency combination supported by the UE 620.
  • the LTE anchor cell 620 may support a band-frequency combination of B1+n5 and the UE 620 also may support a band-frequency combination of B1+n5 for 4G-5G dual connectivity.
  • the receiver 612 may pass the supported NR frequencies 616 based on the supported band-frequency combination.
  • the UE 610 can provide, for display on a display device of the UE 610, a first indication of a first service associated with the 5G NR cell 630.
  • the first indication corresponds to an icon identifying the 5G service.
  • the UI 614 can display a 5G icon display 618.
  • the first indication indicates that the UE 610 is connected to the second wireless communication network with access to the first service (e.g., 5G NR service) .
  • the indication indicates a signal strength of downlink signaling associated with the second wireless communication network at the UE 610.
  • FIG. 7 illustrates a simplified diagram of another network system 700 having service indication aligned with network capability according to aspects of the present disclosure.
  • the network system 700 includes multiple wireless communication devices, such as UE 702 and UE 712, in communication with a first serving cell, such as eNB 708.
  • the eNB 708 is locally connected to a secondary serving cell, such as gNB 714.
  • the eNB 708 may transmit downlink signaling 720, such as a system information block type 2 (SIB2) message 722 containing system information.
  • SIB5 system information block type 5
  • the UE 702 can determine whether the eNB 708 supports 4G-5G dual connectivity using a band-frequency combination by determining that the band-frequency combination supported by the UE includes a first band that corresponds to the first frequency band and a first frequency that corresponds to at least one frequency in the second frequency band.
  • the UE 702 supports a band-frequency combination of B1+n41 and the eNB 708 supports band-frequency combinations B1+n5 and B1+n41, in which the UE 702 and the eNB 708 have a corresponding LTE camping frequency band (e.g., B1) and a corresponding NR frequency (e.g, . n41) .
  • the eNB 708 supports 4G-5G dual connectivity within the UE 702 capability, allowing the UE 702 to display a 5G icon display.
  • the UE 702 may determine that the eNB 708 supports the dual connectivity by comparing the first band in the band-frequency combination supported by the UE 702 to the first frequency band supported by the eNB 708 (e.g., B1) and comparing a first frequency in the band-frequency combination to one or more frequencies in the second frequency band supported by the eNB 708 (e.g., n41) .
  • the UE 712 may determine that the eNB 708 does not support 4G-5G dual connectivity using the band-frequency combination supported by the UE 712, because a second frequency in the UE 712 band-frequency combination does not correspond to each frequency in the second frequency band supported by the eNB 708.
  • the UE 712 supports a band-frequency combination of B1+n71
  • the eNB 708 supports band-frequency combinations B1+n5 and B1+n41.
  • the UE 712 and eNB 708 have corresponding camping frequency bands (e.g., B1) , there is a mismatch in the NR frequency band (e.g., n71 not corresponding to either n5 or n41) .
  • the UE 712 can display on the display device of the UE 712 a second indication of a second service (e.g., 4G LTE) associated with the eNB 708.
  • a second service e.g., 4G LTE
  • the UE 712 can display a 4G icon display.
  • FIG. 8 illustrates a simplified diagram of still another network system 800 having service indication aligned with network capability according to aspects of the present disclosure.
  • the network system 800 includes multiple wireless communication devices, such as UE 802 and UE 812, in communication with a first serving cell, such as eNB 808.
  • the eNB 808 is locally connected to a secondary serving cell, such as gNB 814.
  • the eNB 808 may transmit downlink signaling 820, such as a system information block type 2 (SIB2) message 822 containing system information.
  • SIB5 system information block type 5
  • the UE 802 can determine whether the eNB 808 supports 4G-5G dual connectivity using the band-frequency combination supported by the UE 802 by comparing a first band in the band-frequency combination supported by the UE 802 to a first frequency band in the band-frequency combination supported by the eNB 808.
  • the UE 802 may determine that the eNB 808 does not support 4G-5G dual connectivity using the band-frequency combination supported by the UE 812, because the first band in the UE 812 band-frequency combination does not correspond to the first frequency band supported by the eNB 808.
  • the UE 802 supports a band-frequency combination of B3+n41
  • the eNB 808 supports band-frequency combinations B1+n5 and B1+n41.
  • the UE 802 and eNB 808 have corresponding NR frequencies (e.g., n41) , there is a mismatch in the camping frequency band (e.g., B3 not corresponding to B1) .
  • the UE 802 can display on the display device of the UE 802 an indication of a service (e.g., 4G LTE) associated with the eNB 808.
  • the UE 812 can display a 4G icon display.
  • FIG. 9 illustrates a simplified diagram of a network system 900 with radio access network sharing having service indication aligned with network capability according to aspects of the present disclosure.
  • the network system 900 includes multiple wireless communication devices, such as UE 902 and UE 912, in communication with a first serving cell, such as eNB 908.
  • the eNB 908 is locally connected to secondary serving cells, such as gNB 914 and gNB 924.
  • the eNB 908 may transmit downlink signaling 930, such as a system information block type 1 (SIB1) message 932 containing a PLMN identity list of the eNB 908.
  • SIB1 system information block type 1
  • the PLMN identity list indicates PLMN identifiers associated with the eNB 908 and the gNB 914 and gNB 924. In some aspects, the gNB 914 and gNB 924 correspond to different PLMN identifiers.
  • the downlink signaling 920 includes additional system information, such as a system information block type 2 (SIB2) message 934 containing idle mode measurement.
  • SIB2 system information block type 2
  • the eNB 908 also may transmit the NR frequency list in a system information block type 5 (SIB5) message 936.
  • the eNB 908 supports a band-frequency combination of B1+n5 and B1+n71 and has a PLMN identity list identifying PLMN identifiers X and Y. This suggests that the eNB 908 is locally connected to multiple gNB cells, such as gNB 914 and gNB 924.
  • the UE 902 determines that the eNB 908 does not support 4G-5G dual connectivity within the UE 902 capability since neither the eNB 908 nor the gNB 914 and gNB 924 have corresponding camping frequency bands and NR frequencies.
  • the UE 902 can display a 4G icon display to indicate its connection to a 4G LTE network (instead of 5G NR network) .
  • the UE 912 determines that the gNB 914 supports dual connectivity for the UE 912 based on the UE 912 and gNB 914 having corresponding band-frequency combinations (e.g., B1+n71) and corresponding PLMN identifiers (e.g., Y) .
  • the UE 912 can display a 5G icon display.
  • FIG. 10 illustrates a call flow 1000 for service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • the call flow 1000 illustrates a message exchange between UE 1010 and LTE anchor cell 1020.
  • the UE 1010 includes a receiver 1011 and UI 1012.
  • the UE 1010 operates in an idle mode 1014.
  • the LTE anchor cell 1020 transmits a SIB2 message 1024 with an indication of whether idle mode measurements is present to trigger the UE 1010 to perform idle mode measurements.
  • the LTE anchor cell 1020 also transmits a SIB5 message 1026 including an NR frequency list.
  • the LTE anchor cell 1020 further transmits a SIB1 message 1022 including a PLMN identity list.
  • the receiver 1011 may acquire the NR frequency list from the SIB5 message 1026 and pass NR cell information 1015 to the UI 1012 and to the memory 1013.
  • the NR cell information 1015 contains a listing of NR frequencies that are supported by both the UE 1010 and either of the 5G NR cell 1030 or the 5G NR cell 1040.
  • the NR cell information 1015 includes PLMN identifier information for either of the 5G NR cell 1030 or the 5G NR cell 1040.
  • the UE 1010 may store a first PLMN identifier and the associated frequency band of at least one of the 5G NR cell 1030 or the 5G NR cell 1040 in an acquisition repository (e.g., 1016) .
  • the NR cell information 1015 also includes a cell global identity (CGI) and/or tracking area identity (TAI) of the LTE anchor cell 1020.
  • CGI cell global identity
  • TAI tracking area identity
  • the memory 1030 stores, or records thereon, the acquisition repository.
  • the UI 1012 can display a 5G icon display 1017 based on a determination by the UE 1010 that the LTE anchor cell 1020 and the UE 1010 support corresponding band-frequency combinations for 4G-5G dual connectivity.
  • the UE 1010 may acquire a second SIB1 message 1028 subsequent to the first SIB1 message (e.g., 1022) from the LTE anchor cell 1020.
  • the receiver 1011 may pass updated NR cell information (e.g., 1018) based on the received second SIB1 message 1028 to the memory 1013.
  • the memory 1013 may store the updated NR cell information in the acquisition repository (e.g., 1019) to maintain the acquisition repository valid.
  • the updated NR cell information may contain a second PLMN identifier and associated frequency band of the 5G NR cells (e.g., 1030, 1040) .
  • the UE 1010 can access the acquisition repository during a connected mode of the UE 1010.
  • the UE 1010 can retrieve the first PLMN identifier and the associated frequency band of the 5G NR cell (e.g., 5G NR cell 1030 and/or 5G NR cell 1040) from the acquisition repository. If the UE 1010 is connected to the LTE network, but not the 5G NR network, the UE 1010 may access the NR frequency list from the acquisition repository to search and measure a 5G NR cell (e.g., 5G NR cell 1030 and/or 5G NR cell 1040) .
  • 5G NR cell e.g., 5G NR cell 1030 and/or 5G NR cell 1040
  • the UE 1010 may have already received a NR frequency list from the LTE anchor cell 1020 and cached the NR frequency list. In some examples, the UE may retrieve this NR frequency list from the acquisition repository. If the UE does not receive a NR frequency list or does not have a cached NR frequency list for the LTE anchor cell 1020, then the UE 1010 does not perform a search for 5G NR cells.
  • the UE 1010 continues to cache NR frequency lists and PLMN identity lists from when the UE 1010 was in the connected mode, per LTE anchor cell or TAI.
  • the UE 1010 may use the cached NR frequency list per LTE anchor cell or TAI to know NR neighbor cell PLMN identifier locally connected to the current camped anchor cell to search and determine 4G-5G dual connectivity capability and display the 5G icon.
  • FIG. 11 illustrates another call flow for service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • the call flow 1100 illustrates a message exchange between UE 1110 and LTE anchor cell 1130.
  • the UE 1110 includes a receiver 1111, a processor 1112 and UI 1113.
  • the UE 1110 operates in an idle mode 1114.
  • the LTE anchor cell 1130 transmits a SIB2 message 1134 with an indication of whether idle mode measurements is present to trigger the UE 1110 to perform idle mode measurements.
  • the LTE anchor cell 1130 also transmits a SIB5 message 1136 including an NR frequency list.
  • the LTE anchor cell 1130 further transmits a SIB1 message 1132 including a PLMN identity list.
  • the receiver 1111 may acquire the NR frequency list from the SIB5 message 1136 and pass NR cell information 1115 to the processor 1112.
  • the NR cell information 1115 contains a listing of NR frequencies that are supported by both the UE 1110 and either of the 5G NR cell 1140 or the 5G NR cell 1150.
  • the processor 1112 can determine that the first serving cell is associated with a plurality of PLMN identifiers included in the PLMN identity list.
  • the NR cell information 1115 includes PLMN identifier information for either of the 5G NR cell 1140 or the 5G NR cell 1150.
  • the processor 1112 can determine that the LTE anchor cell 1130 has RAN sharing based on the plurality of PLMN identifiers.
  • the UE 1110 can acquire a SIB1 message 1142 from the 5G NR cell 1140 based on an NR frequency in the NR frequency list by which the 5G NR cell 1140 operates.
  • the SIB1 message 1142 may include a first PLMN identifier and associated frequency band for the 5G NR cell 1140.
  • the receiver 1111 may pass the first PLMN identifier as NR cell PLMN ID 1117 to the processor 1112.
  • the UE 1110 also may acquire a SIB1 message 1152 from the 5G NR cell 1150 based on an NR frequency in the NR frequency list by which the 5G NR cell 1150 operates.
  • the SIB1 message 1152 may include a second PLMN identifier and associated frequency band for the 5G NR cell 1150.
  • the receiver 1111 may pass the second PLMN identifier as NR cell PLMN ID 1118 to the processor 1112.
  • the processor 1112 may determine whether the LTE anchor cell 1130 supports 4G-5G dual connectivity using the band-frequency combination by determining that the band-frequency combination supported by the UE 1110 includes a first band that corresponds to a first frequency band in the band-frequency combination supported by the LTE anchor cell 1130 and a first frequency that corresponds to at least one frequency in a second frequency band in the band-frequency combination supported by the LTE anchor cell 1130.
  • the UE 1110 can determine that the first PLMN identifier of the 5G NR cell 1140 corresponds to a PLMN identifier registered with the UE 1110.
  • the processor 1112 can pass a listing of compatible NR frequencies 1119 to the UI 1113 that indicates the NR frequency and band associated with the 5G NR cell 11140. In this respect, the UI 1113 can display a 5G icon display 1120.
  • FIG. 12 illustrates a flow diagram of an exemplary process of service indication aligned with network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • Aspects of the process 1200 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device or other suitable means for performing the steps.
  • a wireless communication device such as the UEs 115, 902, 1010 and/or 1700 (see FIG. 17) , may utilize one or more components, such as the processor 1702, the memory 1704, the user interface 1708, the transceiver 1710, the modem 1712, and the one or more antennas 1716, to execute the steps of process 1200.
  • the process 1200 includes a number of enumerated steps, but aspects of the process 1200 may include additional steps before, after, and in between the enumerated steps. In some aspects, one or more of the enumerated steps may be omitted or performed in a different order.
  • the UE receives system information block type 1 (SIB1) message containing a PLMN identity list of a master serving cell (e.g., eNB 908, LTE anchor cell 1020) .
  • SIB1 system information block type 1
  • the UE may utilize one or more components, such as the processor 1702, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to receive the SIB1 message.
  • the UE receives a system information block type 5 (SIB5) message containing a NR frequency list of the master serving cell.
  • SIB5 system information block type 5
  • the UE may utilize one or more components, such as the processor 1702, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to receive the SIB5 message.
  • the UE determines a camping frequency band supported by the master serving cell and a NR frequency band supported by one or more secondary serving cells for 4G-5G dual connectivity.
  • the UE determines that a neighboring secondary serving cell supports 4G-5G dual connectivity on the NR frequency supported by the UE.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to determine the camping frequency.
  • the UE determines whether the PLMN identity list contains multiple PLMN identifiers. If the PLMN identity list contains multiple PLMN identifiers, then the process 1200 proceeds to step 1212. Otherwise, the process 1200 proceeds to step 1214.
  • the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine whether the PLMN identity list contains multiple PLMN identifiers.
  • the UE acquires system information containing a PLMN identifier of at least the neighboring secondary serving cell that supports 4G-5G dual connectivity on the NR frequency supported by the UE.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to acquire the system information.
  • the UE determines whether the PLMN identifier of the neighboring secondary serving cell corresponds to the registered PLMN identifier of the UE. If the PLMN identifier of the neighboring secondary serving cell corresponds to that of the UE, the process 1200 proceeds to step 1216. Otherwise, the process 1200 proceeds to step 1218.
  • the PLMN identity list is determined to contain a single PLMN identifier (suggesting that the master serving cell is locally connected to one secondary serving cell) , the proceeds 1200 can also proceed to step 1214 to determine whether that PLMN identifier corresponds to the registered PLMN identifier of the UE.
  • the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine whether the PLMN identifier corresponds to the registered PLMN identifier of the UE.
  • the UE provides, for display on a display device of the UE, a first indication of a first service associated with the neighboring secondary serving cell, when the PLMN identifier of the secondary serving cell corresponds to the registered PLMN identifier of the UE.
  • the first indication may include a 5G icon indicating that the UE is connected to, or at least may connect to, the secondary serving cell via the master serving cell for access to a 5G NR network.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704 and UI 1708, to provide for display the first indication.
  • the UE provides, for display on the display device of the UE, a second indication of a second service associated with the master serving cell, when the PLMN identifier of the secondary serving cell does not correspond to the registered PLMN identifier of the UE.
  • the second indication may include a 4G icon indicating that the UE is connected to, or at least may connect to, the master serving cell for access to a 4G LTE network.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704 and UI 1708, to provide for display the second indication.
  • FIG. 13 illustrates a call flow 1300 for service indication aligned with network capability using an alternative system information block according to aspects of the present disclosure.
  • the call flow 1300 illustrates a message exchange between UE 1310 and LTE anchor cell 1320.
  • the UE 1310 includes a receiver 1312 and UI 1314.
  • the UE 1310 operates in an idle mode 1316.
  • the UE 1310 can operate in the idle mode 1316 by camping on the LTE anchor cell 1320.
  • the LTE anchor cell 1320 transmits a SIB2 message 1322 with an indication of whether an idle mode measurement feature is present to trigger the UE 1310 to perform idle mode measurements.
  • the SIB2 message 1322 includes radio resource configuration information that indicates capability to support dual connectivity with the first wireless communication network and the second wireless communication network.
  • the LTE anchor cell 1320 transmits a system information block type 24 (SIB24) message 1324 as an alternative aspect to the SIB5 message.
  • SIB24 message 1324 can include an NR frequency list.
  • the receiver 1312 can receive, from the LTE anchor cell 1320, the SIB24 message 1324 and recover the NR frequency list from the SIB24 message 1324.
  • the NR frequency list provided in the SIB24 message 1324 indicates a first set of frequencies for standalone operation and a second set of frequencies for non-standalone operation.
  • the SIB24 signaling is traditionally dedicated downlink signaling for standalone systems.
  • the SIB24 message 1324 includes a flag indicating that the second set of frequencies for the non-standalone operation is present in the NR frequency list.
  • the receiver 1312 can pass compatible NR frequencies 1318 from the NR frequency list acquired from the SIB24 message 1324 so that the UI 1314 can display a 5G icon display 1319 that is aligned with the capability of the LTE anchor cell 1320.
  • FIG. 14 illustrates a call flow 1400 for service indication aligned with network capability using signal strength coverage information according to aspects of the present disclosure.
  • the call flow 1400 illustrates a message exchange between UE 1410 and LTE anchor cell 1420.
  • the UE 1410 includes a receiver 1412 and UI 1414.
  • the LTE cell 1420 transmits a SIB5 message 1424 including an NR frequency list.
  • the UE 1410 operates in an idle mode 1416.
  • the UE 1410 can operate in the idle mode 1416 by camping on the LTE anchor cell 1420, in which the UE 1410 can receive the SIB5 message 1426 with the receiver 1412 over a downlink broadcast channel when the 1410 is operating in the idle mode 1416.
  • the LTE anchor cell 1420 transmits a SIB2 message 1424 with an indication of whether an idle mode measurement feature is present to trigger the UE 1410 to perform idle mode measurements.
  • the UE 1410 can acquire the NR frequency list from the SIB5 message 1426 when the idle mode measurement feature is absent from the SIB2 message 1424.
  • the SIB2 message 1424 includes radio resource configuration information that indicates capability to support dual connectivity with the first wireless communication network and the second wireless communication network.
  • the UE 1410 may measure the NR for dual connectivity addition.
  • the LTE anchor cell 1420 may configure an NR measurement object that contains the NR frequency list of the 5G NR network and that the UE 1410 measures.
  • the UE 1410 can leverage the measurement result to display the 5G icon.
  • the receiver 1412 can receive, from at least one of the one or more second serving cells (e.g., 5G NR cell 1430) , a synchronization signal block (SSB) including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) associated with a respective one of the one or more frequencies.
  • a synchronization signal block including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) associated with a respective one of the one or more frequencies.
  • the 5G NR cell 1430 transmits a synchronization signal block (SSB) 1432.
  • the UE 1410 uses the NR frequency list to search the SSB in each of the frequencies listed in the NR frequency list.
  • the SSB 1432 may include the PSS, the SSS, and the Physical Broadcast Channel (PBCH) for a particular frequency.
  • PBCH Physical Broadcast Channel
  • the PSS may be used to identify symbol timing and sector identity.
  • the SSS may be used to identify cell identity.
  • the PBCH may be used to indicate the SFN and current SSB index within the SS burst set. Additionally, the PBCH has a parameter to signal the NR bandwidth of the frequency channel (e.g., 100 MHz) .
  • the UE 1410 may measure a signal strength of the PSS and the SSS and determine whether the signal strength exceeds a predetermined threshold.
  • the receiver 1412 may pass coverage/signal strength information 1418 to the UI 1414, which may display a 5G icon of coverage based on the coverage/signal strength 1418.
  • the coverage/signal strength information 1418 may indicate whether the measured signal strength exceeded the predetermined threshold.
  • the UI 1414 may provide for display a first indication of a first service associated with the 5G NR cell 1430 (e.g., 5G icon display 1419) , when the signal strength exceeds the predetermined threshold. This would indicate that the supported NR frequencies for 4G-5G dual connectivity are in fact strong enough signals to provide coverage to the UE 1410.
  • the UI 1414 may provide for display a second indication of a second service associated with the LTE anchor cell 1420, when the signal strength does not exceed the predetermined threshold.
  • the signal strength at the UE 1410 may not be sufficient, although the LTE anchor cell 1420 and the UE 1410 share supported NR frequencies.
  • the UI 1414 may display a 4G icon display.
  • the SIB2 message 1424 and/or the SIB5 message 1426 may include additional information for SSB configuration, e.g. subcarrier spacing, time schedule to transmit SSBs, periodicity to transmit the SS burst set that has multiple SSBs, number of SSBs per SS burst set, etc.
  • the SIB2 message 1424 and/or the SIB5 message 1426 may include additional information relating to Channel State Information Reference Signal (CSI-RS) , e.g. time schedule to transmit CSI-RS.
  • CSI-RS Channel State Information Reference Signal
  • the 5G NR cell 1430 supports the 5G NR network. Additionally, the UE 1410 may be in idle mode or any of the connected modes (e.g., connected to both the LTE network and the 5G NR network, or connected to only the LTE network) .
  • the UE 1410 may use a variety of techniques to determine whether the UE 1410 capability is aligned with the LTE anchor cell 1420 within coverage by the 5G NR network. In some aspects, if the UE 1410 is connected to both the LTE network and the 5G NR network, the UE 1410 actively receives the NR and the UE 1410 reports the CSI and Radio Link Monitoring (RLM) . The UE 1410 leverages these measurements to display the 5G icon.
  • RLM Radio Link Monitoring
  • FIG. 15 illustrates a call flow 1500 for service indication aligned with network capability using different types of indications according to aspects of the present disclosure.
  • the call flow 1500 illustrates a message exchange between UE 1510 and LTE anchor cell 1520.
  • the UE 1510 includes a receiver 1512 and UI 1514.
  • the UE 1510 operates in an idle mode 1516.
  • the UE 1510 can operate in the idle mode 1516 by camping on the LTE anchor cell 1520, in which the UE 1510 can receive the SIB5 message 1524 with the receiver 1512 over a downlink broadcast channel when the 1510 is operating in the idle mode 1516.
  • the LTE anchor cell 1520 transmits a SIB2 message 1522 with an indication of whether an idle mode measurement feature is present to trigger the UE 1510 to perform idle mode measurements.
  • the UE 1510 can acquire the NR frequency list from the SIB5 message 1524 when the idle mode measurement feature is absent from the SIB2 message 1522.
  • the UE 1510 can determine that the NR frequency list includes a plurality of sets of frequencies, in which each of the plurality of sets of frequencies corresponds to a different portion of NR frequency band.
  • a first set of frequencies may correspond to a sub-6GHz frequency range.
  • a second set of frequencies may correspond to a millimeter wave frequency range, such as 28 GHz or 39 GHz.
  • a third set of frequencies may correspond to an ultrawideband frequency range, such as greater than 77 GHz.
  • the receiver 1512 can pass compatible NR frequencies 1518 from the NR frequency list acquired from the SIB5 message 1524 so that the UI 1514 can display a corresponding icon display 1519 that is aligned with the capability of the LTE anchor cell 1520.
  • the UE 1510 in coordination with the user interface 1514, is adapted to provide a first indication (e.g., 5G icon) for a first set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a first frequency within the first set of frequencies.
  • the UE 1510 in coordination with the user interface 1514, is adapted to provide a second indication of the first service (e.g., 5G+ icon) for a second set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a second frequency within the second set of frequencies.
  • the UE 1510, in coordination with the user interface 1514 is adapted to provide a third indication of the first service (e.g., UWB icon) for a third set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a third frequency within the third set of frequencies.
  • FIG. 16 illustrates a call flow 1600 for service indication aligned with network capability in a connected mode 1620 according to aspects of the present disclosure.
  • a UE 1610 is in an idle mode 1616.
  • An LTE anchor cell 1630 transmits a SIB5 message 1632 that includes a NR frequency list.
  • the UE 1610 may determine that the LTE anchor cell 1630 may support 4G-5G dual connectivity within the UE 1610 capability based on supported band-frequency combinations from the NR frequency list.
  • An 5G NR cell 1640 transmits an SSB and CSI-RS (e.g., 1642) .
  • the UE 1610 receives the SIB5 from the LTE anchor cell 1630 and the SSB and the CSI-RS from the 5G NR cell 1640.
  • the UE 1610 may set up an RRC connection.
  • the UE 1610 may send NR measurement results 1618 to the LTE anchor cell 1630.
  • the UE 1610 may prepare the measurement in advance and send the connection setup information to the LTE anchor cell 1630.
  • the LTE anchor cell 1630 may determine that the UE 1610 has a strong signal strength associated with the 5G NR network.
  • the LTE anchor cell 1630 may configure the UE 1610 to be in a dual connectivity mode (e.g., 1620) .
  • the UE 1610 may transmit and receive data both from the LTE network (e.g., 1638) and the 5G NR network (e.g., 1644) .
  • An advantage of this feature may allow for display of an accurate bar associated with the 5G icon.
  • the UE 1610 may obtain the PLMN identity list and/or LTE CGI/TAI information by retrieving it from an acquisition database (see FIG. 10) that stores the information.
  • the acquisition database may store information including the frequencies (e.g., NR frequencies) within which the 5G NR network operates.
  • the UE 1610 may use the acquisition database to determine the network capability alignment with the UE 1610 while the UE 1610 is in the idle mode 1616.
  • FIG. 17 is a block diagram of an exemplary UE 1700 according to aspects of the present disclosure.
  • the UE 1700 may be a UE 115, 202 as discussed above.
  • the UE 1700 may include a processor 1702, a memory 1704, a user interface (UI) 1708, a transceiver 1710 including a receiver 1711, a modem subsystem 1712, and a radio frequency (RF) unit 1714, and one or more antennas 1716.
  • UI user interface
  • RF radio frequency
  • the processor 1702 may include a central processing unit (CPU) , a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 1702 also may be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 1704 may include a cache memory (e.g., a cache memory of the processor 1702) , random access memory (RAM) , magnetoresistive RAM (MRAM) , read-only memory (ROM) , programmable read-only memory (PROM) , erasable programmable read only memory (EPROM) , electrically erasable programmable read only memory (EEPROM) , flash memory, solid state memory device, hard disk drives, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 404 includes a non-transitory computer-readable medium.
  • the memory 1704 may store instructions 1706.
  • the instructions 1706 may include instructions that, when executed by the processor 1702, cause the processor 1702 to perform the operations described herein with reference to the UEs 115, 202 in connection with aspects of the present disclosure. Instructions 1706 also may be referred to as code.
  • the terms “instructions” and “code” should be interpreted broadly to include any type of computer-readable statement (s) .
  • the terms “instructions” and “code” may refer to one or more programs, routines, sub-routines, functions, procedures, etc.
  • “Instructions” and “code” may include a single computer-readable statement or many computer-readable statements.
  • the UI 1708 may include a display device (not shown) of the UE.
  • the UI 1708 may include an input device adapted to receive user input.
  • the UI 1708 also may include an output device adapted to display content produced with the processor 1702.
  • the UI 1708 may be adapted to display an indication that corresponds to an icon identifying a service associated with an operator network (e.g., LTE, 5G NR, etc. ) .
  • the UI 1708 may be adapted to display an indication that indicates that the UE 1700 is connected to a wireless communication network with access to the service.
  • the UI 1708 also may be adapted to an indication that indicates a signal strength of downlink signaling associated with a wireless communication network at the UE 1700.
  • the transceiver 1710 may include the receiver 1711, the modem subsystem 1712, and the RF unit 1714.
  • the transceiver 1710 can be configured to communicate bi-directionally with other devices, such as the BSs 105.
  • the UE 202 supports dual connectivity with the LTE network and the 5G NR network.
  • the modem subsystem 1712 may be configured to modulate and/or encode the data from the memory 1704 according to a modulation and coding scheme (MCS) , e.g., a low-density parity check (LDPC) coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.
  • MCS modulation and coding scheme
  • LDPC low-density parity check
  • the RF unit 1714 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc. ) modulated/encoded data from the modem subsystem 1712 (on outbound transmissions) or of transmissions originating from another source such as a UE 115 or a BS 105.
  • the RF unit 1714 may be further configured to perform analog beamforming in conjunction with the digital beamforming.
  • the receiver 1711, the modem subsystem 1712, and/or the RF unit 1714 may be separate devices that are coupled together at the UE 1700 to enable the UE 1700 to communicate with other devices.
  • the RF unit 1714 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information) , to the antennas 1716 for transmission to one or more other devices. This may include, for example, transmission of CQI reports and/or SRSs according to aspects of the present disclosure.
  • the antennas 1716 may further receive data messages transmitted from other devices.
  • the antennas 1716 may provide the received data messages for processing and/or demodulation at the transceiver 1710.
  • the antennas 1716 may include multiple antennas of similar or different designs to sustain multiple transmission links.
  • the RF unit 1714 may configure the antennas 1716.
  • the receiver 1711 may be adapted to acquire, from a first serving cell (e.g., eNB 508, LTE anchor cell 620, eNB708, eNB 808, eNB 908) associated with a first wireless communication network, a frequency list in system information.
  • a first serving cell e.g., eNB 508, LTE anchor cell 620, eNB708, eNB 808, eNB 908 associated with a first wireless communication network
  • a frequency list in system information e.g., a frequency list in system information.
  • the receiver 1711 may be adapted to receive the system information is further configured to receive, from the first serving cell, a system information block type 5 (SIB5) message, in which the SIB5 message includes the frequency list.
  • SIB5 system information block type 5
  • the transceiver 1710 may be adapted to camp on the first serving cell, monitor for the system information from the first serving cell, receive, from the first serving cell with the receiver 1711, the system information, communicate, with the first serving cell, first connection messages for registering the UE 1700 for service with the EPC, and communicate, with the first serving cell and the one or more second serving cells, second connection messages for establishing simultaneous connections to the first wireless communication network and the second wireless communication network.
  • first serving cell is a master base station and each of the one or more second serving cells is a secondary base station.
  • the transceiver 1710 may be adapted to receive, from the first serving cell with the receiver 1711, a radio resource control (RRC) connection reconfiguration message for dual connectivity with the first wireless communication network and the second wireless communication network.
  • RRC radio resource control
  • the SIB5 message is included in the RRC connection reconfiguration message.
  • the transceiver 1710 also may be adapted to transmit, to the second serving cell with the RF unit 1714, a RRC connection reconfiguration complete message based on the RRC connection reconfiguration message for establishing a connection to the second wireless communication network.
  • the transceiver also may be adapted to receive, from the first serving cell with the receive 1711, a system information block type 1 (SIB1) message, in which the SIB1 message includes a public land mobile network (PLMN) identifier list indicating one or more PLMN identifiers associated with the first serving cell and the one or more second serving cells.
  • SIB1 system information block type 1
  • PLMN public land mobile network
  • each of the one or more PLMN identifiers corresponds to a different one of the one or more second serving cells.
  • the transceiver also may be adapted to receive, from the first serving cell with the receiver 1711, a system information block type 2 (SIB2) message, in which the SIB2 message comprises radio resource configuration information that indicates capability to support dual connectivity with the first wireless communication network and the second wireless communication network.
  • SIB2 message comprises radio resource configuration information that indicates capability to support dual connectivity with the first wireless communication network and the second wireless communication network.
  • the SIB5 message is received in a same broadcast system information message with the SIB2 message.
  • the SIB5 message is received subsequent to the SIB2 message over different broadcast system information messages.
  • the SIB2 message is received in a downlink broadcast channel and the SIB5 message is received in the RRC connection reconfiguration message.
  • the transceiver 1710 also may be adapted to receive, from the first serving cell with the receiver 1711, a system information block type 24 (SIB24) message, in which the SIB24 message includes the frequency list that indicates a first set of frequencies for standalone operation and a second set of frequencies for non-standalone operation.
  • SIB24 message includes a flag indicating that the second set of frequencies for the non-standalone operation is present in the frequency list.
  • the processor 1702 may be adapted to determine whether the first serving cell supports the dual connectivity using the band-frequency combination by determining that the band-frequency combination supported by the UE 1700 includes a first band that corresponds to the first frequency band and a first frequency that corresponds to at least one frequency in the second frequency band.
  • the processor 1702 also may be adapted to determine that the first serving cell is associated with a plurality of PLMN identifiers included in the PLMN identity list, determine that the first serving cell has radio access network (RAN) sharing based on the plurality of PLMN identifiers, and acquire a first system information block type 1 (SIB1) message from at least one of the one or more second serving cells based on one or more frequencies in the frequency list.
  • the first SIB1 may include a first PLMN identifier and associated frequency band for the at least one of the one or more second serving cells.
  • the processor 1702 may be adapted to determine whether the first serving cell supports the dual connectivity using the band-frequency combination by determining that the band-frequency combination supported by the UE 1700 includes a first band that corresponds to the first frequency band and a first frequency that corresponds to at least one frequency in the second frequency band. The processor 1702 may also determine that the first PLMN identifier of the at least one of the one or more second serving cells corresponds to a PLMN identifier registered with the UE 1700.
  • the processor 1702 also may be adapted to store one or more PLMN identifiers and associated frequency band of the at least one of the one or more second serving cells in an acquisition repository.
  • the memory 1704 stores, or records thereon, the acquisition repository.
  • the processor 1702 also may be adapted to access the acquisition repository during a connected mode of the UE 1700, and retrieve the first PLMN identifier and the associated frequency band of the at least one of the one or more second serving cells from the acquisition repository.
  • the processor 1702 in coordination with the transceiver 1710, also may be adapted to acquire a second SIB1 message subsequent to the first SIB1 message from the at least one of the one or more second serving cells, and store a second PLMN identifier and associated frequency band of the at least one of the one or more second serving cells in the acquisition repository to maintain the acquisition repository valid.
  • the processor 1702 also may be adapted to determine that the frequency list includes a plurality of sets of frequencies, in which each of the plurality of sets of frequencies corresponds to a different portion of the second frequency band.
  • a first set of frequencies may correspond to a sub-6GHz frequency range.
  • a second set of frequencies may correspond to a millimeter wave frequency range, such as 28 GHz or 39 GHz.
  • a third set of frequencies may correspond to an ultrawideband frequency range, such as greater than 77 GHz.
  • the processor 1702 in coordination with the user interface 1708, is adapted to provide a first indication (e.g., 5G icon) for a first set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a first frequency within the first set of frequencies.
  • a first indication e.g., 5G icon
  • the processor 1702 in coordination with the user interface 1708, is adapted to provide a second indication of the first service (e.g., 5G+ icon) for a second set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a second frequency within the second set of frequencies.
  • the processor 1702 in coordination with the user interface 1708, is adapted to provide a third indication of the first service (e.g., UWB icon) for a third set of frequencies of the plurality of sets of frequencies when the band-frequency combination includes a third frequency within the third set of frequencies.
  • a third indication of the first service e.g., UWB icon
  • FIG. 18 is a block diagram of an exemplary BS 1800 according to some aspects of the present disclosure.
  • the BS 1800 may be a BS 105 in the network 100 as discussed above in FIG. 1 or a BS 205 in the network 200 as discussed above in FIG. 2.
  • the BS 1800 may include a processor 1802, a memory 1804, a transceiver 1810 including a modem subsystem 1812 and a RF unit 1814, and one or more antennas 1816. These elements may be in direct or indirect communication with each other, for example via one or more buses.
  • the processor 1802 may have various features as a specific-type processor. For example, these may include a CPU, a DSP, an ASIC, a controller, a FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 1802 also may be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 1804 may include a cache memory (e.g., a cache memory of the processor 1802) , RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, a solid state memory device, one or more hard disk drives, memristor-based arrays, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 1804 may include a non-transitory computer-readable medium.
  • the memory 1804 may store instructions 1806.
  • the instructions 1806 may include instructions that, when executed by the processor 1802, cause the processor 1802 to perform operations described herein, for example, aspects of FIGS. 1, 2, 18, 6-8. Instructions 1806 also may be referred to as code, which may be interpreted broadly to include any type of computer-readable statement (s) as discussed above with respect to FIG. 3.
  • the transceiver 1810 may include the modem subsystem 1812 and the RF unit 1814.
  • the transceiver 1810 can be configured to communicate bi-directionally with other devices, such as the UEs 115 and/or 300 and/or another core network element.
  • the modem subsystem 1812 may be configured to modulate and/or encode data according to a MCS, e.g., a LDPC coding scheme, a turbo coding scheme, a convolutional coding scheme, a polar coding scheme, a digital beamforming scheme, etc.
  • the RF unit 1814 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc.
  • modulated/encoded data e.g., SIB2, RRC connection reconfiguration, PDCCH, PDSCH, SSBs
  • modulated/encoded data e.g., SIB2, RRC connection reconfiguration, PDCCH, PDSCH, SSBs
  • the RF unit 1814 may be further configured to perform analog beamforming in conjunction with the digital beamforming.
  • the modem subsystem 1812 and/or the RF unit 1814 may be separate devices that are coupled together at the BS 105 to enable the BS 105 to communicate with other devices.
  • the RF unit 1814 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information) , to the antennas 1816 for transmission to one or more other devices. This may include, for example, transmission of information to complete attachment to a network and communication with a camped UE 115 or 300 according to some aspects of the present disclosure.
  • the antennas 1816 may further receive data messages transmitted from other devices and provide the received data messages for processing and/or demodulation at the transceiver 1810.
  • the transceiver 1810 may provide the demodulated and decoded data (e.g., RRC connection complete, RRC connection reconfiguration complete) to the processor 1802 for processing.
  • the antennas 1816 may include multiple antennas of similar or different designs in order to sustain multiple transmission links.
  • the BS 1800 can include multiple transceivers 1810 implementing different RATs (e.g., 5G NR and LTE) .
  • the BS 1800 can include a single transceiver 1810 implementing multiple RATs (e.g., 5G NR and LTE) .
  • the transceiver 1810 can include various components, where different combinations of components can implement different RATs.
  • FIG. 19 illustrates a flow diagram of an exemplary process of service indication with aligned network capability in a network system according to aspects of the present disclosure.
  • Aspects of the process 1900 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device or other suitable means for performing the steps.
  • a wireless communication device such as the UEs 115 and/or 1700, may utilize one or more components, such as the processor 1702, the memory 1704, the user interface 1708, the transceiver 1710, the modem 1712, and the one or more antennas 1716, to execute the steps of process 1900.
  • the process 1900 includes a number of enumerated steps, but aspects of the process 1900 may include additional steps before, after, and in between the enumerated steps. In some aspects, one or more of the enumerated steps may be omitted or performed in a different order.
  • the process 1900 starts at block 1902, where the UE acquires, from a master serving cell, a frequency list in a system information block. For example, the UE may receive a SIB5 message containing the frequency list. For instance, the UE may utilize one or more components, such as the processor 1702, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to receive the SIB5 message.
  • the processor 1702 the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to receive the SIB5 message.
  • the UE determines a camping frequency band supported by the master serving cell and NR frequency band supported by one or more secondary serving cells for 4G-5G dual connectivity, from the frequency list.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to determine the camping frequency.
  • the UE determines that the master serving cell supports 4G-5G dual connectivity on a frequency combination supported by the UE. For instance, the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine that the master serving cell supports the 4G-5G dual connectivity.
  • the UE provides, for display on a display device of the UE, an indication of a service associated with the one or more secondary serving cells.
  • the indication may include a 5G icon indicating that the UE is connected to, or at least may connect to, the secondary serving cell via the master serving cell for access to a 5G NR network.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704 and UI 1708, to provide for display the indication.
  • FIG. 20 illustrates a flow diagram of an exemplary process of service indication with aligned network capability in a network system with radio access network sharing according to aspects of the present disclosure.
  • Aspects of the process 2000 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device or other suitable means for performing the steps.
  • a wireless communication device such as the UEs 115 and/or 1700, may utilize one or more components, such as the processor 1702, the memory 1704, the user interface 1708, the transceiver 1710, the modem 1712, and the one or more antennas 1716, to execute the steps of process 2000.
  • the process 2000 includes a number of enumerated steps, but aspects of the process 2000 may include additional steps before, after, and in between the enumerated steps. In some aspects, one or more of the enumerated steps may be omitted or performed in a different order.
  • the process 2000 starts at block 2002, where the UE receives system information containing a PLMN identity list and a NR frequency list, from a master serving cell (e.g., LTE anchor cell) .
  • the UE may receive a SIB1 message containing the PLMN identity list and a SIB5 message containing the NR frequency list.
  • the UE may utilize one or more components, such as the processor 1702, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to receive the SIB1 message and the SIB5 message.
  • the UE determines that the PLMN identity list contains multiple PLMN identifiers. For example, the UE may determine that the master serving cell is locally connected to multiple secondary serving cells (e.g., 5G NR cells) based on the presence of multiple PLMN identifiers. For instance, the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine whether the PLMN identity list contains multiple PLMN identifiers.
  • the processor 1702 and the memory 1704 may be utilized to determine whether the PLMN identity list contains multiple PLMN identifiers.
  • the UE obtains system information containing PLMN identifier information of one or more secondary serving cells.
  • the UE may receive a SIB1 message from at least one secondary serving cell, of which the SIB1 message includes a PLMN identifier of that secondary serving cell.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704, the transceiver 1710, the receiver 1711, the modem 1712, the RF unit 1714, and the one or more antennas 1716, to obtain the system information.
  • the UE determines that a secondary serving cell supports 4G-5G dual connectivity on a NR frequency supported by the UE.
  • the secondary serving cell may operate on a same camping frequency band of the master serving cell (e.g., B1) and operate on a same NR frequency supported by the capability of the UE.
  • the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine that the secondary serving cell supports the NR frequency supported by the UE.
  • the UE determines that the secondary serving cell has a PLMN identifier that corresponds to the registered PLMN identifier of the UE. For example, the UE may obtain the PLMN identifier of the secondary serving cell from the SIB1 message sent by the secondary serving cell and compare the secondary serving cell PLMN identifier against the registered PLMN identifier of the UE. For instance, the UE may utilize one or more components, such as the processor 1702 and the memory 1704, to determine that the PLMN identifier corresponds to the registered PLMN identifier of the UE.
  • the UE provides, for display on a display device of the UE, an indication of a service associated with the secondary serving cell.
  • the indication may include a 5G icon indicating that the UE is connected to, or at least may connect to, the secondary serving cell via the master serving cell for access to a 5G NR network.
  • the UE may utilize one or more components, such as the processor 1702, the memory 1704 and UI 1708, to provide for display the indication.
  • Information and signals 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 above 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 conventional processor, controller, microcontroller, or state machine.
  • a processor also may 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 above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions also may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • “or” as used in a list of items indicates an inclusive list such that, for example, a list of [at least one of A, B, or C] means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) .

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

Abstract

La présente invention concerne des systèmes et des procédés de communication sans fil appliqués dans la fourniture d'une indication de service qui est alignée avec une capacité de réseau à l'aide de mesure de mode inactif. Un procédé, donné à titre d'exemple, de communications sans fil réalisé par l'UE comprend l'acquisition, auprès d'une première cellule de desserte associée à un premier réseau de communication sans fil, d'une liste de fréquences dans des informations système, et la détermination, dans la liste de fréquences, d'une première bande de fréquences prise en charge par la première cellule de desserte et d'une seconde bande de fréquences prise en charge par une ou plusieurs secondes cellules de desserte pour une connectivité double avec le premier réseau de communication sans fil et avec un second réseau de communication sans fil. Le procédé comprend également le fait de déterminer que la première cellule de desserte prend en charge une connectivité double à l'aide d'une combinaison de fréquences de bande prise en charge par l'équipement d'utilisateur sur la base de la première bande de fréquences et de la seconde bande de fréquences, et la fourniture aux fins d'affichage d'une première indication d'un premier service associé à la ou aux secondes cellules de desserte.
PCT/CN2020/089265 2020-05-08 2020-05-08 Affichage d'icône 5g pour aligner une capacité de réseau à l'aide de mesures de mode inactif WO2021223241A1 (fr)

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