WO2021212361A1 - Procédé de restauration rapide d'un service 5g à partir d'une interruption anormale des données - Google Patents

Procédé de restauration rapide d'un service 5g à partir d'une interruption anormale des données Download PDF

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Publication number
WO2021212361A1
WO2021212361A1 PCT/CN2020/086103 CN2020086103W WO2021212361A1 WO 2021212361 A1 WO2021212361 A1 WO 2021212361A1 CN 2020086103 W CN2020086103 W CN 2020086103W WO 2021212361 A1 WO2021212361 A1 WO 2021212361A1
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WIPO (PCT)
Prior art keywords
network
base station
new
wireless device
cell
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PCT/CN2020/086103
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English (en)
Inventor
Fojian ZHANG
Jian Li
Hao Zhang
Chaofeng HUI
Yuankun ZHU
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Qualcomm Incorporated
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Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/086103 priority Critical patent/WO2021212361A1/fr
Publication of WO2021212361A1 publication Critical patent/WO2021212361A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions

Definitions

  • LTE Long Term Evolution
  • 5GNR Fifth Generation new radio
  • other recently developed communication technologies allow user equipment to communicate information at data rates (e.g., in terms of Gigabits per second, etc. ) that are orders of magnitude greater than what was available just a few years ago.
  • the different available communication technologies such as LTE, 5GNR, etc., are enabling many different network implementations and offering different types of networks, sometimes in the same geographic areas, such as the same countries.
  • 5GNR networks being adopted is a 5G standalone (SA) network in which a 5G radio access network (RAN) and 5G core network provide 5G services in a geographic area, such as a country.
  • 5G SA networks can exclusively include NR base stations, such as Next Generation NodeB (gNodeBs or gNBs) .
  • gNodeBs Next Generation NodeB
  • 5G non-standalone (NSA) network in which a RAN providing both LTE and NR support (e.g., a RAN including both LTE base stations, such as LTE Evolved nodeBs (eNodeBs or eNBs) , and NR base stations, such as Next Generation NodeB (gNodeBs or gNBs) ) is connected to an LTE core network (e.g., an Evolved Packet Core (EPC) network) .
  • EPC Evolved Packet Core
  • a wireless device in such 5G NSA networks that can support both LTE and NR communications can signal to the 5G NSA that the UE supports dual connectivity with new radio (DCNR) .
  • DCNR new radio
  • a packet switched (PS) call failure on a wireless device can sometimes be unrecoverable and can sometimes result in all subsequent PS service setup attempts failing, thereby preventing data traffic communications.
  • PS packet switched
  • Various aspects include systems and methods for enabling fast recovery by a wireless device from packet switched (PS) service failure in a fifth generation (5G) new radio (NR) (5GNR) network, such as a 5G non-standalone (NSA) network or 5G standalone (SA) network.
  • 5GNR fifth generation new radio
  • NSA 5G non-standalone
  • SA 5G standalone
  • Various aspects may be performed by a processor of a wireless device, such as a modem processor of a wireless device.
  • Various aspects may include determining whether a total number of abnormal PS service failure events during a time period exceeds a maximum counter value, adding a cell identifier (cell ID) of a current base station of the 5GNR network the wireless device is camped on to a barred base station list in response to determining that the total number of abnormal PS service failure events during the time period exceeds the maximum counter value, and initiating reselection to a base station of the 5GNR network not indicated in the barred base station list in response to adding the cell ID of the current base station of the 5GNR network the wireless device is camped on to the barred base station list.
  • cell ID cell identifier
  • Some aspects may further include starting a barred timer in response to adding the cell ID of the current base station of the 5GNR network the wireless device is camped on to the barred base station list, determining whether the barred timer has expired, and removing the cell ID of the current base station of the 5GNR network the wireless device is camped on from the barred base station list in response to determining that the barred timer has expired.
  • the barred timer may expire one hour after starting.
  • the time period may be ten seconds and the maximum counter value may be five.
  • the 5GNR network may be a 5G NSA network
  • the current base station of the 5GNR network the wireless device is camped on may be a Long Term Evolution (LTE) cell
  • reselection to a base station of the 5GNR network not indicated in the barred base station list may include determining any available LTE cells of the 5G NSA network and cell IDs of any determined available LTE cells of the 5G NSA network, selecting one of the determined available LTE cells of the 5G NSA network as a new serving LTE cell of the 5G NSA network based at least in part on the new serving LTE cell of the 5G NSA network having a cell ID not indicated in the barred base station list, sending a new attach request to the new serving LTE cell of the 5G NSA network, the new attach request indicating dual connectivity with new radio (DCNR) is supported by the wireless device, receiving a new attach acceptance from the new serving LTE cell of the 5G NSA network in response to sending the new attach request, and establishing a new LTE
  • the 5GNR network may be a 5G SA network
  • the current base station of the 5GNR network the wireless device is camped on may be a Next Generation NodeB (gNB)
  • gNB Next Generation NodeB
  • reselection to a base station of the 5GNR network not indicated in the barred base station list may include determining any available gNBs of the 5G SA network and cell IDs of any determined available gNBs of the 5G SA network, selecting one of the determined available gNBs of the 5G SA network as a new serving gNB of the 5G SA network based at least in part on the new serving gNB of the 5G SA network having a cell ID not indicated in the barred base station list, sending a new registration request to the new serving gNB of the 5G SA network, receiving a new registration acceptance from the new serving gNB of the 5G SA network in response to sending the new registration request, sending a new protocol data unit (PDU) session establishment request to the new serving gNB of the 5G
  • Further aspects may include a wireless device having a processor configured to perform one or more operations of any of the methods summarized above. Further aspects may include a non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause a processor of a wireless device to perform operations of any of the methods summarized above. Further aspects include a wireless device having means for performing functions of any of the methods summarized above. Further aspects include a system-on-chip for use in a wireless device that includes a processor configured to perform one or more operations of any of the methods summarized above. Further aspects include a system in a package that includes two systems on chip for use in a wireless device that includes a processor configured to perform one or more operations of any of the methods summarized above.
  • FIG. 1 is a system block diagram illustrating an example communication system suitable for implementing any of the various embodiments.
  • FIG. 2 is a component block diagram illustrating an example computing and wireless modem system suitable for implementing any of the various embodiments.
  • FIG. 3 is a component block diagram illustrating a software architecture including a radio protocol stack for the user and control planes in wireless communications suitable for implementing any of the various embodiments.
  • FIG. 4 is a component block diagram illustrating a system configured for wireless communication in accordance with various embodiments.
  • FIG. 5A is a process flow diagram illustrating a method for recovering from packet switched (PS) service failure in a fifth generation (5G) new radio (NR) (5GNR) network in accordance with various embodiments.
  • PS packet switched
  • 5GNR new radio
  • FIG. 5B is a process flow diagram illustrating a method for reselection to a base station of a 5GNR network not indicated in a barred base station list in accordance with various embodiments.
  • FIG. 5C is a process flow diagram illustrating a method for reselection to a base station of a 5GNR network not indicated in a barred base station list in accordance with various embodiments.
  • FIG. 6A is a call flow diagram illustrating example interactions between a wireless device and a base station of a 5G NSA network in accordance with various embodiments.
  • FIG. 6B is a call flow diagram illustrating example interactions between a wireless device and a base station of a 5G SA network in accordance with various embodiments.
  • FIG. 7 is a component block diagram of a network computing device suitable for use with various embodiments.
  • FIG. 8 is a component block diagram of a wireless device suitable for use with various embodiments.
  • Various embodiments include systems and methods for recovering from a packet switched (PS) service failure in a fifth generation (5G) new radio (NR) (5GNR) network, such as a 5G non-standalone (NSA) network or 5G standalone (SA) network.
  • NR fifth generation
  • 5GNR new radio
  • NSA 5G non-standalone
  • SA 5G standalone
  • Various embodiments may enable a base station of a 5GNR network, such as a Long Term Evolution (LTE) cell of a 5G NSA network, a Next Generation NodeB (gNB) of a 5G SA network, etc., to be barred from use by a wireless device in response to PS service failure followed by reselection to a new base station of the 5GNR network, such as a new LTE cell of a 5G NSA network, a new gNB of a 5G SA network, etc., that is not barred from use by the wireless device.
  • LTE Long Term Evolution
  • gNB Next
  • Various embodiments may enable a wireless device to maintain a barred base station list indicating cell identifier (cell IDs) of base stations that are barred from use by the wireless device. Reselection to a base station of the 5GNR network that is not barred (e.g., not indicated in the barred base station list) may support the reestablishment of PS service.
  • Various embodiments may improve user experience by enabling recovery from PS service failure and thereby allowing data traffic communications between a wireless device and the 5GNR network.
  • Various embodiments may improve user experience by making data services, such as Internet access, etc., available to a user after a PS service failure.
  • wireless device is used herein to refer to any one or all of cellular telephones, smartphones, portable computing devices, personal or mobile multi-media players, laptop computers, tablet computers, smartbooks, ultrabooks, palmtop computers, wireless electronic mail receivers, multimedia Internet-enabled cellular telephones, wireless router devices, wireless appliances, medical devices and equipment, biometric sensors/devices, wearable devices including smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart rings, smart bracelets, etc. ) , entertainment devices (e.g., wireless gaming controllers, music and video players, satellite radios, etc.
  • wireless-network enabled Internet of Things (IoT) devices including smart meters/sensors, industrial manufacturing equipment, large and small machinery and appliances for home or enterprise use, wireless communication elements within autonomous and semiautonomous vehicles, wireless devices affixed to or incorporated into various mobile platforms, global positioning system devices, and similar electronic devices that include a memory, wireless communication components and a programmable processor.
  • IoT Internet of Things
  • SOC system-on-chip
  • a single SOC may contain circuitry for digital, analog, mixed-signal, and radio-frequency functions.
  • a single SOC may also include any number of general purpose and/or specialized processors (digital signal processors, modem processors, video processors, etc. ) , memory blocks (e.g., ROM, RAM, Flash, etc. ) , and resources (e.g., timers, voltage regulators, oscillators, etc. ) .
  • SOCs may also include software for controlling the integrated resources and processors, as well as for controlling peripheral devices.
  • SIP system in a package
  • a SIP may include a single substrate on which multiple IC chips or semiconductor dies are stacked in a vertical configuration.
  • the SIP may include one or more multi-chip modules (MCMs) on which multiple ICs or semiconductor dies are packaged into a unifying substrate.
  • MCMs multi-chip modules
  • a SIP may also include multiple independent SOCs coupled together via high speed communication circuitry and packaged in close proximity, such as on a single motherboard or in a single wireless device. The proximity of the SOCs facilitates high speed communications and the sharing of memory and resources.
  • the terms “network, ” “system, ” “wireless network, ” “cellular network, ” and “wireless communication network” may interchangeably refer to a portion or all of a wireless network of a carrier associated with a wireless device and/or subscription on a wireless device.
  • the techniques described herein may be used for various wireless communication networks, such as Code Division Multiple Access (CDMA) , time division multiple access (TDMA) , FDMA, orthogonal FDMA (OFDMA) , single carrier FDMA (SC-FDMA) and other networks.
  • CDMA Code Division Multiple Access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single carrier FDMA
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support at least one radio access technology, which may operate on one or more frequency or range of frequencies.
  • a CDMA network may implement Universal Terrestrial Radio Access (UTRA) (including Wideband Code Division Multiple Access (WCDMA) standards) , CDMA2000 (including IS-2000, IS-95 and/or IS-856 standards) , etc.
  • UTRA Universal Terrestrial Radio Access
  • CDMA2000 including IS-2000, IS-95 and/or IS-856 standards
  • a TDMA network may implement GSM Enhanced Data rates for GSM Evolution (EDGE) .
  • EDGE GSM Enhanced Data rates for GSM Evolution
  • an OFDMA network may implement Evolved UTRA (E-UTRA) (including LTE standards) , IEEE 802.11 (WiFi) , IEEE 802.16 (WiMAX) , IEEE 802.20, etc.
  • E-UTRA Evolved UTRA
  • E-UTRAN Evolved Universal Terrestrial Radio Access
  • eNodeB eNodeB
  • LTE is a mobile network standard for 4G wireless communication of high-speed data developed by the 3GPP (3rd Generation Partnership Project) and specified in its Release 8 document series. In contrast to the circuit-switched (CS) model of cellular network standards, LTE has been designed to support only packet switched (PS) services. Data services in LTE may be provided over the Internet, while multimedia services may be supported by the Internet Multimedia Subsystem (IMS) framework.
  • IMS Internet Multimedia Subsystem
  • the LTE standard is based on the evolution of the Universal Mobile Telecommunications System (UMTS) radio access through the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) .
  • UMTS Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • EPC Evolved Packet Core
  • EPS Evolved Packet System
  • IP Internet Protocol
  • the 5G system is an advanced technology from 4G LTE, and provides a new radio access technology (RAT) through the evolution of the existing mobile communication network structure.
  • a 5G system may support, for example, extended LTE (eLTE) as well as non-3GPP access (e.g., WLAN) .
  • eLTE extended LTE
  • WLAN non-3GPP access
  • 5GNR networks One implementation option for 5GNR networks being adopted is a 5G SA network in which a 5G radio access network (RAN) and 5G core network provide 5G services in geographic area, such as a country.
  • 5G SA networks can overlap coverage in the geographic area, such as the country, with LTE networks.
  • 5G SA networks can exclusively include NR base stations, such as Next Generation NodeB (gNodeBs or gNBs) .
  • gNodeBs or gNBs Next Generation NodeB
  • a 5G NSA network in which a RAN providing both LTE (also referred to as 4G) and new radio (NR) (also referred to a 5G) support (e.g., a RAN including both LTE base stations, such as LTE Evolved nodeBs (eNodeBs or eNBs) , and NR base stations, such as Next Generation NodeB (gNodeBs or gNBs) ) is connected to an LTE core network (e.g., an Evolved Packet Core (EPC) network) .
  • EPC Evolved Packet Core
  • a wireless device sometimes referred to as a user equipment (UE)
  • UE user equipment
  • DCNR dual connectivity with new radio
  • IP-oriented (i.e., “data-centric” ) applications e.g. web-browsers, games, e-mail applications, etc.
  • Real-time communication services e.g., voice calls, Short Message Service (SMS) communications, etc.
  • SMS Short Message Service
  • IMS Interoperability for Mobile communications
  • IMS Internet multimedia subsystem
  • OMA Open Mobile Alliance
  • PDN Packet Data Network
  • an abnormal PS service failure on a wireless device can sometimes be unrecoverable resulting in all subsequent PS service setup attempts failing, thereby preventing data traffic communications (also referred to as data-centric services) .
  • data traffic communications also referred to as data-centric services
  • Such PS service failures on a wireless device can result in a negative user experience as data services, such as Internet access, can be unavailable for a period of time.
  • a 5G capable wireless device may register with the NSA network and initially indicate the wireless device has a dual 5G and LTE data capability.
  • the wireless device may send an attach request (ATTACH_REQ) indicating that DCNR is supported by the wireless device.
  • ATTACH_REQ attach request
  • the base station of the 5G NSA network such as an LTE cell (e.g., an eNB) may return an attachment acceptance (ATTACH_ACCEPT) to the wireless device.
  • the successful registration and attachment process between the wireless device and the base station of the 5G NSA network may result in the wireless device camping on the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) .
  • an LTE cell e.g., an eNB
  • the wireless device may send a service request for data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) to the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) , after attaching to the base station and indicating DCNR support.
  • the wireless device can establish a data call (i.e., a PS call) with the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) , to send/receive the data traffic.
  • an abnormal PS service failure can occur following the data service request by the wireless device indicating that DCNR is supported, the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) .
  • Abnormal PS service failure can be any PS service failure that was unexpected.
  • One example indication of an abnormal PS service failure occurring may be a Transmission Control Protocol (TCP) /Internet Protocol (IP) (TCP/IP) connection used for a PS service ending while uplink (UL) data is still awaiting transmission in a pre-transmit queue on the wireless device.
  • TCP Transmission Control Protocol
  • IP Internet Protocol
  • Another example indication of an abnormal PS service failure occurring may be a reachability test (e.g., a “Ping Test” ) failing, such as a network echo request being sent without receiving a network echo reply.
  • the PS service failure may cause the data call (i.e., the PS call) to abnormally terminate.
  • the wireless device in response to abnormal PS service failure and/or abnormal data call termination, may reattempt to establish PS service and a data call (i.e., a PS call) with the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) .
  • a data call i.e., a PS call
  • the wireless device may send further service requests to the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) .
  • PS service requests to the base station of the 5G NSA network may continually fail and/or the PS service may continue to be abnormally terminated, thereby causing the wireless device to be unable to recover from the initial PS service failure.
  • LTE cell e.g., an eNB
  • a 5G capable wireless device may register with the SA network by sending a registration request to a base station of the 5G SA network, such as a gNB, and receiving a registration acceptance from the base station of the 5G SA network, such as a gNB.
  • the successful registration and attachment process between the wireless device and the base station of the 5G SA network, such as a gNB, may result in the wireless device camping on the base station of the 5G SA network, such as a gNB.
  • the wireless device may send a protocol data unit (PDU) session establishment request for data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) to the base station of the 5G SA network, such as a gNB, after registering with the base station.
  • the wireless device may receive a PDU session establishment acceptance from the base station of the 5G SA network, such as a gNB, and a PDU session may be established between the wireless device and the base station.
  • the wireless device can establish a data call (i.e., a PS call) with the base station of the 5G SA network, such as a gNB, to send/receive the data traffic via the established PDU session.
  • a data call i.e., a PS call
  • an abnormal PS service failure can occur following the establishment of a data call (i.e., a PS call) between the wireless device and the base station of the 5G SA network, such as a gNB.
  • Abnormal PS service failure can be any PS service failure that was unexpected.
  • One example indication of an abnormal PS service failure occurring may be a TCP/IP connection used for a PS service ending while UL data is still awaiting transmission in a pre-transmit queue on the wireless device.
  • Another example indication of an abnormal PS service failure occurring may be a reachability test (e.g., a “Ping Test” ) failing, such as a network echo request being sent without receiving a network echo reply.
  • the PS service failure may cause the data call (i.e., the PS call) to abnormally terminate.
  • the wireless device in response to abnormal PS service failure and/or abnormal data call termination, may reattempt to establish PS service and a data call (i.e., a PS call) with the base station of the 5G SA network, such as gNB.
  • the wireless device may send further PDU session establishment requests to the base station of the 5G SA network, such as a gNB.
  • PDU session establishment requests to the base station of the 5G SA network, such as a gNB may continually fail and/or the PS service may continue to be abnormally terminated, thereby causing the wireless device to be unable to recover from the initial PS service failure.
  • Various embodiments may enable fast recovery by a wireless device from PS service failure in a 5GNR network, such as a 5G NSA network or 5G SA network.
  • Various embodiments may provide an automatic recovery mechanism that may support 5G capable wireless devices reestablishing PS service in response to PS data transfer stopping abnormally.
  • Various embodiments may restore PS service on a 5G capable wireless device with a 5GNR network, such as a 5G NSA network or 5G SA network, by barring the current base station of the 5GNR the wireless device is camped on from use by the wireless device and triggering reselection to a new base station of the 5GNR network that is not barred from use by the wireless device, in response to detecting that PS data transfer stopped abnormally.
  • Various embodiments may include adding the cell identifier (cell ID) of the current base station of the 5GNR the wireless device is camped on to a barred base station list and triggering reselection to a new base station of the 5GNR network that is not on the barred base station list.
  • a processor of a wireless device may maintain a counter to record the number of abnormal PS service failure events that occur with the 5GNR network, such as a 5G NSA network or 5G SA network.
  • the counter reaching a maximum counter value may indicate that the 5GNR network, such as a 5G NSA network or 5G SA network, is operating abnormally and PS service failure may be occurring.
  • the counter may track the total number of abnormal PS service failure events during a time period. As one example, the time period may be ten seconds and the maximum counter value may be five abnormal PS service failure events.
  • indications of the abnormal PS service failure events may be stored.
  • the indications of the abnormal PS service failure events may include timestamps of when the abnormal PS service failures occurred or were detected.
  • the time period such as ten seconds, may extend backward from the most recent abnormal PS service failure.
  • the counter may track the number of abnormal PS service failure indications having timestamps falling in the time window corresponding to the time period, such as the total number of abnormal PS service failure events occurring or detected in the ten seconds prior to the most recent abnormal PS service failure.
  • a counter and timer combination may be used to track the total number of abnormal PS service failure events in a time period.
  • the counter may track a total number of abnormal PS service failures during a time period tracked by the timer, and the counter may be reset at each expiration of the timer.
  • a processor of a wireless device may add a cell identifier (cell ID) of a current base station of the 5GNR network (e.g., a current LTE cell (e.g., an eNB) of a 5G NSA network or a current gNB of a 5G SA network) the wireless device is camped on to a barred base station list.
  • a barred base station list may be a list stored in a memory of the wireless device including cell IDs of base stations that are barred from use by the wireless device.
  • the cell IDs of base stations that are barred from use by the wireless device may be cell IDs of base stations that the wireless device may be prevented from attaching to or registering to.
  • the barred base station list may be a listing of cell IDs the wireless device is restricted from selecting to or reselecting to.
  • the wireless device may be configured to not camp on any base station having a cell ID indicated in the barred base station list.
  • the barred base station may be a listing of cell IDs of those base stations that were previously associated with an abnormal PS service failure. As such, the barred base station list may prevent the wireless device from attaching or registering to base stations that are likely to result in abnormal PS service failure.
  • the selection of base stations not previously associated with abnormal PS service failure may increase a likelihood of successfully establishing a PS call and thereby considering to be recovered from abnormal PS service failure.
  • a base station not previously associated with the abnormal PS service failure e.g., a base station not on the barred base station list
  • the user may be able to access the Internet, improving the user experience in comparison to repeated abnormal PS service failures.
  • a processor of a wireless device in response to adding the cell ID of the current base station of the 5GNR network the wireless device is camped on to the barred base station list, a processor of a wireless device (e.g., AP, modem processor, etc. ) may initiate (or trigger) reselection to a base station of the 5GNR network (e.g., a new LTE cell (e.g., an new eNB) of a 5G NSA network or a new gNB of a 5G SA network) not indicated in the barred base station list.
  • a base station of the 5GNR network e.g., a new LTE cell (e.g., an new eNB) of a 5G NSA network or a new gNB of a 5G SA network
  • a wireless device may be in a geographic location that that is overlapped by coverage areas of more than one base station.
  • the wireless device may be configured to determine the cell IDs of all available base stations of the 5GNR network (e.g., all available LTE base stations of a 5G NSA network, all available gNBs of a 5G SA network, etc. ) providing coverage to the geographic location.
  • the wireless device may be configured to select one base station, such as one LTE base station, one gNB, etc., from all the available base stations providing coverage to the geographic location.
  • the wireless device may select the available base station with the best signal and attach or register to that selected base station.
  • the selected base station may be a serving base station to which the wireless device may attach or register to receive services, such as PS services.
  • reselection to a base station of the 5GNR network may include determining cell IDs of available base stations, such as cell IDs of available gNBs, cell IDs of available LTE cells, etc., and comparing the determined cell IDs of available base stations to the barred base station list.
  • the wireless device may be prevented from selecting any base station with a determined cell ID indicated in the barred base station list as the serving base station during reselection.
  • the first base station’s cell ID being indicated in the barred base station list may prevent the first base station from being selected as the serving base station and the second base station may be selected as the serving base station.
  • reselection to a base station of the 5GNR network not indicated in the barred base station list may include a processor of a wireless device (e.g., AP, modem processor, etc. ) determining available gNBs of the 5G SA network and their respective cell IDs and selecting one of the determined available gNBs of the 5G SA network as a new serving gNB of the 5G SA network based at least in part on the new serving gNB of the 5G SA network having a cell ID not indicated in the barred base station list.
  • a wireless device e.g., AP, modem processor, etc.
  • the processor may ensure the new serving gNB is not associated with past abnormal PS service failure because the new serving gNB may not be indicated in the barred base station list (i.e., the cell ID of the selected new serving gNB may not be listed in the barred base station list) .
  • the processor of the wireless device e.g., AP, modem processor, etc.
  • the processor of the wireless device e.g., AP, modem processor, etc.
  • the processor of the wireless device may establish a new PS call with the new serving gNB of the 5G SA network in response to receiving the new PDU session establishment acceptance.
  • the new PS call may support the sending/receiving of data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) .
  • the wireless device As a PS call between the wireless device and the base station of the 5G SA network, such as a gNB, may be successfully established, the wireless device may be considered to have recovered from the abnormal PS service failure.
  • the user may be able to access the Internet, improving the user experience in comparison to repeated abnormal PS service failures.
  • reselection to a base station of the 5GNR network not indicated in the barred base station list may include a processor of a wireless device (e.g., AP, modem processor, etc. ) determining any available LTE cells of the 5G NSA network and their respective cell IDs and selecting one of the determined available LTE cells of the 5G NSA network as a new serving LTE cell of the 5G NSA network based at least in part on the new serving LTE cell of the 5G NSA network having a cell ID not indicated in the barred base station list.
  • a wireless device e.g., AP, modem processor, etc.
  • the processor may ensure the new serving LTE cell is not associated with past abnormal PS service failure because the new serving LTE cell may not be indicated in the barred base station list (i.e., the cell ID of the selected new serving LTE cell may not be listed in the barred base station list) .
  • the processor of the wireless device e.g., AP, modem processor, etc.
  • the new serving LTE cell of the 5G NSA network may return an attachment acceptance (ATTACH_ACCEPT) to the wireless device.
  • the wireless device may be attached to the new LTE cell of the 5G NSA network.
  • the wireless device may send a service request for data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) to the new serving LTE cell of the 5G NSA network, and a PS call between the wireless device and the new serving LTE cell of the 5G NSA network may be established for the sending/receiving of data traffic.
  • a PS call between the wireless device and the new serving LTE cell of the 5G NSA network may be successfully established, the wireless device may be considered to have recovered from the abnormal PS service failure.
  • the user may be able to access the Internet, improving the user experience in comparison to repeated abnormal PS service failures.
  • barred base stations may be removed from the barred base station list after a period of time, such as after one hour.
  • a processor of a wireless device e.g., AP, modem processor, etc.
  • the barred timer may be a timer configured to track an amount of time a cell ID has been indicated on the barred base station list.
  • the barred timer may be a countdown timer configured to expire after a period of time after starting, such as one hour after starting.
  • a processor of a wireless device may determine whether the barred timer has expired. In response to determining that the barred timer expired, the processor of the wireless device (e.g., AP, modem processor, etc. ) may remove the cell ID associated with the expired barred timer, such as the cell ID of the current base station of the 5GNR network the wireless device was camped on when an abnormal PS failure event previously occurred, from the barred base station list. In this manner, a previously barred base station may be set free for use in future selection or reselection by the wireless device after expiration of the barred timer.
  • the processor of the wireless device e.g., AP, modem processor, etc.
  • FIG. 1 is a system block diagram illustrating an example communication system 100 suitable for implementing any of the various embodiments.
  • the communications system 100 may be a 5GNR network, such as a 5G SA, 5G NSA, etc., or any other suitable network such as an LTE network, etc.
  • the communications system 100 may include a heterogeneous network architecture that includes a core network 140 and a variety of mobile devices (illustrated as user equipment (UE) 120a-120e in FIG. 1) .
  • the communications system 100 may also include a number of base stations (illustrated as the BS 110a, the BS 110b, the BS 110c, and the BS 110d) and other network entities.
  • a base station is an entity that communicates with wireless devices, and also may be referred to as a Node B, an LTE Evolved nodeB (eNodeB or eNB) , an access point (AP) , a Radio head, a transmit receive point (TRP) , a New Radio base station (NR BS) , a 5G NodeB (NB) , a Next Generation NodeB (gNodeB or gNB) , or the like.
  • Each base station may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a base station, a base station Subsystem serving this coverage area, or a combination thereof, depending on the context in which the term is used.
  • the core network 140 may be any type core network, such as an LTE core network (e.g., an EPC network) , 5G core network, etc.
  • a base station 110a-110d may provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by mobile devices with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by mobile devices with service subscription.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by mobile devices having association with the femto cell (for example, mobile devices in a closed subscriber group (CSG) ) .
  • a base station for a macro cell may be referred to as a macro BS.
  • a base station for a pico cell may be referred to as a pico BS.
  • a base station for a femto cell may be referred to as a femto BS or a home BS.
  • a base station 110a may be a macro BS for a macro cell 102a
  • a base station 110b may be a pico BS for a pico cell 102b
  • a base station 110c may be a femto BS for a femto cell 102c.
  • a base station 110a-110d may support one or multiple (for example, three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not be stationary, and the geographic area of the cell may move according to the location of a mobile base station.
  • the base stations 110a-110d may be interconnected to one another as well as to one or more other base stations or network nodes (not illustrated) in the communications system 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or a combination thereof using any suitable transport network
  • the base station 110a-110d may communicate with the core network 140 over a wired or wireless communication link 126.
  • the wireless device e.g., user equipment (UE)
  • UE user equipment
  • the wired communication link 126 may use a variety of wired networks (e.g., Ethernet, TV cable, telephony, fiber optic and other forms of physical network connections) that may use one or more wired communication protocols, such as Ethernet, Point-To-Point protocol, High-Level Data Link Control (HDLC) , Advanced Data Communication Control Protocol (ADCCP) , and Transmission Control Protocol/Internet Protocol (TCP/IP) .
  • wired networks e.g., Ethernet, TV cable, telephony, fiber optic and other forms of physical network connections
  • wired communication protocols such as Ethernet, Point-To-Point protocol, High-Level Data Link Control (HDLC) , Advanced Data Communication Control Protocol (ADCCP) , and Transmission Control Protocol/Internet Protocol (TCP/IP) .
  • HDMI High-Level Data Link Control
  • ADCCP Advanced Data Communication Control Protocol
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • the communications system 100 also may include relay stations (e.g., relay BS 110d) .
  • a relay station is an entity that can receive a transmission of data from an upstream station (for example, a base station or a mobile device) and transmit the data to a downstream station (for example, a wireless device (e.g., UE) or a base station) .
  • a relay station also may be a mobile device that can relay transmissions for other wireless devices.
  • a relay station 110d may communicate with macro the base station 110a and the wireless device 120d in order to facilitate communication between the base station 110a and the wireless device 120d.
  • a relay station also may be referred to as a relay base station, a relay base station, a relay, etc.
  • the communications system 100 may be a heterogeneous network that includes base stations of different types, for example, macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations may have different transmit power levels, different coverage areas, and different impacts on interference in communications system 100. For example, macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of base stations and may provide coordination and control for these base stations.
  • the network controller 130 may communicate with the base stations via a backhaul.
  • the base stations also may communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul.
  • the wireless devices 120a, 120b, 120c may be dispersed throughout communications system 100, and each wireless device may be stationary or mobile.
  • a wireless device also may be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, user equipment (UE) , etc.
  • a macro base station 110a may communicate with the communication network 140 over a wired or wireless communication link 126.
  • the wireless devices 120a, 120b, 120c may communicate with a base station 110a-110d over a wireless communication link 122.
  • the wireless communication links 122, 124 may include a plurality of carrier signals, frequencies, or frequency bands, each of which may include a plurality of logical channels.
  • the wireless communication links 122 and 124 may utilize one or more Radio access technologies (RATs) .
  • RATs Radio access technologies
  • Examples of RATs that may be used in a wireless communication link include 3GPP LTE, 3G, 4G, 5G (e.g., NR) , GSM, CDMA, WCDMA, Worldwide Interoperability for Microwave Access (WiMAX) , Time Division Multiple Access (TDMA) , and other mobile telephony communication technologies cellular RATs.
  • RATs that may be used in one or more of the various wireless communication links 122, 124 within the communication system 100 include medium range protocols such as Wi-Fi, LTE-U, LTE-Direct, LAA, MuLTEfire, and relatively short range RATs such as ZigBee, Bluetooth, and Bluetooth Low Energy (LE) .
  • medium range protocols such as Wi-Fi, LTE-U, LTE-Direct, LAA, MuLTEfire
  • relatively short range RATs such as ZigBee, Bluetooth, and Bluetooth Low Energy (LE) .
  • Certain wireless networks utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kHz and the minimum Resource allocation (called a “resource block” ) may be 12 subcarriers (or 180 kHz) . Consequently, the nominal Fast File Transfer (FFT) size may be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz) , respectively.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover 1.08 MHz (i.e., 6 Resource blocks) , and there may be 1, 2, 4, 8 or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, respectively.
  • NR may utilize OFDM with a cyclic prefix (CP) on the uplink (UL) and downlink (DL) and include support for half-duplex operation using time division duplex (TDD) .
  • CP cyclic prefix
  • TDD time division duplex
  • a single component carrier bandwidth of 100 MHz may be supported.
  • NR Resource blocks may span 12 sub-carriers with a sub-carrier bandwidth of 75 kHz over a 0.1 millisecond (ms) duration.
  • Each Radio frame may consist of 50 subframes with a length of 10 ms. Consequently, each subframe may have a length of 0.2 ms.
  • Each subframe may indicate a link direction (i.e., DL or UL) for data transmission and the link direction for each subframe may be dynamically switched.
  • Each subframe may include DL/UL data as well as DL/UL control data.
  • Beamforming may be supported and beam direction may be dynamically configured.
  • Multiple Input Multiple Output (MIMO) transmissions with precoding may also be supported.
  • MIMO configurations in the DL may support up to eight transmit antennas with multi-layer DL transmissions up to eight streams and up to two streams per wireless device. Multi-layer transmissions with up to 2 streams per wireless device may be supported. Aggregation of multiple cells may be supported with up to eight serving cells.
  • NR may support a different air interface, other than an OFDM-based air interface.
  • MTC and eMTC mobile devices include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (for example, remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some mobile devices may be considered Internet-of-Things (IoT) devices or may be implemented as NB-IoT (narrowband internet of things) devices.
  • a wireless device (e.g., UE) 120a-e may be included inside a housing that houses components of the wireless device, such as processor components, memory components, similar components, or a combination thereof.
  • any number of communication systems and any number of wireless networks may be deployed in a given geographic area.
  • Each communications system and wireless network may support a particular Radio access technology (RAT) and may operate on one or more frequencies.
  • RAT also may be referred to as a Radio technology, an air interface, etc.
  • a frequency also may be referred to as a carrier, a frequency channel, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between communications systems of different RATs.
  • 4G/LTE and/or 5G/NR RAT networks may be deployed.
  • a 5G NSA network may utilize both 4G/LTE RAT in the 4G/LTE RAN side of the 5G NSA network and 5G/NR RAT in the 5G/NR RAN side of the 5G NSA network.
  • the 4G/LTE RAN and the 5G/NR RAN may both connect to one another and a 4G/LTE core network (e.g., an EPC network) in a 5G NSA network.
  • a 4G/LTE core network e.g., an EPC network
  • two or more wireless devices 120a-e may communicate directly using one or more sidelink channels 124 (for example, without using a base station 110a-110d as an intermediary to communicate with one another) .
  • wireless device 120a-e may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or similar protocol) , a mesh network, or similar networks, or combinations thereof.
  • V2X vehicle-to-everything
  • the wireless device 120a-e may perform scheduling operations, resource selection operations, as well as other operations described elsewhere herein as being performed by the base station 110a
  • FIG. 2 is a component block diagram illustrating an example computing and wireless modem system 200 suitable for implementing any of the various embodiments.
  • Various embodiments may be implemented on a number of single processor and multiprocessor computer systems, including a system-on-chip (SOC) or system in a package (SIP) .
  • SOC system-on-chip
  • SIP system in a package
  • the illustrated example wireless device 200 (which may be a SIP in some embodiments) includes a two SOCs 202, 204 coupled to a clock 206, a voltage regulator 208, and a wireless transceiver 266 configured to send and receive wireless communications via an antenna (not shown) to/from network wireless devices, such as a base station 110a.
  • the first SOC 202 operate as central processing unit (CPU) of the wireless device that carries out the instructions of software application programs by performing the arithmetic, logical, control and input/output (I/O) operations specified by the instructions.
  • the second SOC 204 may operate as a specialized processing unit.
  • the second SOC 204 may operate as a specialized 5G processing unit responsible for managing high volume, high speed (e.g., 5 Gbps, etc. ) , and/or very high frequency short wave length (e.g., 28 GHz mmWave spectrum, etc. ) communications.
  • high speed e.g., 5 Gbps, etc.
  • very high frequency short wave length e.g., 28 GHz mmWave spectrum, etc.
  • the first SOC 202 may include a digital signal processor (DSP) 210, a modem processor 212, a graphics processor 214, an application processor (AP) 216, one or more coprocessors 218 (e.g., vector co-processor) connected to one or more of the processors, memory 220, custom circuity 222, system components and resources 224, an interconnection/bus module 226, one or more temperature sensors 230, a thermal management unit 232, and a thermal power envelope (TPE) component 234.
  • DSP digital signal processor
  • AP application processor
  • coprocessors 218 e.g., vector co-processor
  • the second SOC 204 may include a 5G modem processor 252, a power management unit 254, an interconnection/bus module 264, the plurality of mmWave transceivers 256, memory 258, and various additional processors 260, such as an applications processor, packet processor, etc.
  • Each processor 210, 212, 214, 216, 218, 252, 260 may include one or more cores, and each processor/core may perform operations independent of the other processors/cores.
  • the first SOC 202 may include a processor that executes a first type of operating system (e.g., FreeBSD, LINUX, OS X, etc. ) and a processor that executes a second type of operating system (e.g., MICROSOFT WINDOWS 10) .
  • a first type of operating system e.g., FreeBSD, LINUX, OS X, etc.
  • a second type of operating system e.g., MICROSOFT WINDOWS 10.
  • processors 210, 212, 214, 216, 218, 252, 260 may be included as part of a processor cluster architecture (e.g., a synchronous processor cluster architecture, an asynchronous or heterogeneous processor cluster architecture, etc. ) .
  • a processor cluster architecture e.g., a synchronous processor cluster architecture, an asynchronous or heterogeneous processor cluster architecture, etc.
  • the first and second SOC 202, 204 may include various system components, resources and custom circuitry for managing sensor data, analog-to-digital conversions, wireless data transmissions, and for performing other specialized operations, such as decoding data packets and processing encoded audio and video signals for rendering in a web browser.
  • the system components and resources 224 of the first SOC 202 may include power amplifiers, voltage regulators, oscillators, phase-locked loops, peripheral bridges, data controllers, memory controllers, system controllers, access ports, timers, and other similar components used to support the processors and software clients running on a wireless device.
  • the system components and resources 224 and/or custom circuitry 222 may also include circuitry to interface with peripheral devices, such as cameras, electronic displays, wireless devices, external memory chips, etc.
  • the first and second SOC 202, 204 may communicate via interconnection/bus module 250.
  • the various processors 210, 212, 214, 216, 218, may be interconnected to one or more memory elements 220, system components and resources 224, and custom circuitry 222, and a thermal management unit 232 via an interconnection/bus module 226.
  • the processor 252 may be interconnected to the power management unit 254, the mmWave transceivers 256, memory 258, and various additional processors 260 via the interconnection/bus module 264.
  • the interconnection/bus module 226, 250, 264 may include an array of reconfigurable logic gates and/or implement a bus architecture (e.g., CoreConnect, AMBA, etc. ) . Communications may be provided by advanced interconnects, such as high-performance networks-on chip (NoCs) .
  • NoCs high-performance networks-on chip
  • the first and/or second SOCs 202, 204 may further include an input/output module (not illustrated) for communicating with resources external to the SOC, such as a clock 206 and a voltage regulator 208.
  • resources external to the SOC e.g., clock 206, voltage regulator 208 may be shared by two or more of the internal SOC processors/cores.
  • various embodiments may be implemented in a wide variety of computing systems, which may include a single processor, multiple processors, multicore processors, or any combination thereof.
  • FIG. 3 is a component block diagram illustrating a software architecture 300 including a radio protocol stack for the user and control planes in wireless communications suitable for implementing any of the various embodiments.
  • the wireless device 320 may implement the software architecture 300 to facilitate communication between a wireless device 320 (e.g., the wireless device 120a-120e, 200) and the base station 350 (e.g., the base station 110a) of a communication system (e.g., 100) .
  • layers in software architecture 300 may form logical connections with corresponding layers in software of the base station 350.
  • the software architecture 300 may be distributed among one or more processors (e.g., the processors 212, 214, 216, 218, 252, 260) .
  • the software architecture 300 may include multiple protocol stacks, each of which may be associated with a different SIM (e.g., two protocol stacks associated with two SIMs, respectively, in a dual-SIM wireless device) . While described below with reference to LTE communication layers, the software architecture 300 may support any of variety of standards and protocols for wireless communications, and/or may include additional protocol stacks that support any of variety of standards and protocols wireless communications.
  • the software architecture 300 may include a Non-Access Stratum (NAS) 302 and an Access Stratum (AS) 304.
  • the NAS 302 may include functions and protocols to support Packet filtering, security management, mobility control, session management, and traffic and signaling between a SIM (s) of the wireless device and its core network 140.
  • the AS 304 may include functions and protocols that support communication between a SIM (s) and entities of supported access networks (e.g., a base station) .
  • the AS 304 may include at least three layers (Layer 1, Layer 2, and Layer 3) , each of which may contain various sub-layers.
  • Layer 1 (L1) of the AS 304 may be a physical layer (PHY) 306, which may oversee functions that enable transmission and/or reception over the air interface.
  • PHY physical layer
  • Examples of such physical layer 306 functions may include cyclic redundancy check (CRC) attachment, coding blocks, scrambling and descrambling, modulation and demodulation, signal measurements, MIMO, etc.
  • the physical layer may include various logical channels, including the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) .
  • PDCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • Layer 2 (L2) of the AS 304 may be responsible for the link between the wireless device 320 and the base station 350 over the physical layer 306.
  • Layer 2 may include a Media Access Control (MAC) sublayer 308, a Radio link Control (RLC) sublayer 310, and a Packet data convergence protocol (PDCP) 312 sublayer, each of which form logical connections terminating at the base station 350.
  • MAC Media Access Control
  • RLC Radio link Control
  • PDCP Packet data convergence protocol
  • Layer 3 (L3) of the AS 304 may include a Radio Resource Control (RRC) sublayer 3.
  • RRC Radio Resource Control
  • the software architecture 300 may include additional Layer 3 sublayers, as well as various upper layers above Layer 3.
  • the RRC sublayer 313 may provide functions including broadcasting system information, paging, and establishing and releasing an RRC signaling connection between the wireless device 320 and the base station 350.
  • the PDCP sublayer 312 may provide uplink functions including multiplexing between different Radio bearers and logical channels, sequence number addition, handover data handling, integrity protection, ciphering, and header compression.
  • the PDCP sublayer 312 may provide functions that include in-sequence delivery of data packets, duplicate data Packet detection, integrity validation, deciphering, and header decompression.
  • the RLC sublayer 310 may provide segmentation and concatenation of upper layer data packets, retransmission of lost data packets, and Automatic Repeat Request (ARQ) .
  • ARQ Automatic Repeat Request
  • the RLC sublayer 310 functions may include reordering of data packets to compensate for out-of-order reception, reassembly of upper layer data packets, and ARQ.
  • MAC sublayer 308 may provide functions including multiplexing between logical and transport channels, random access procedure, logical channel priority, and hybrid-ARQ (HARQ) operations.
  • the MAC layer functions may include channel mapping within a cell, de-multiplexing, discontinuous reception (DRX) , and HARQ operations.
  • the software architecture 300 may provide functions to transmit data through physical media
  • the software architecture 300 may further include at least one host layer 314 to provide data transfer services to various applications in the wireless device 320.
  • application-specific functions provided by the at least one host layer 314 may provide an interface between the software architecture and the general purpose processor.
  • the software architecture 300 may include one or more higher logical layer (e.g., transport, session, presentation, application, etc. ) that provide host layer functions.
  • the software architecture 300 may include a network layer (e.g., IP layer) in which a logical connection terminates at a packet data network (PDN) gateway (PGW) .
  • PDN packet data network
  • PGW packet data network gateway
  • the software architecture 300 may include an application layer in which a logical connection terminates at another device (e.g., end user device, server, etc. ) .
  • the software architecture 300 may further include in the AS 304 a hardware interface 316 between the physical layer 306 and the communication hardware (e.g., one or more radio frequency (RF) transceivers) .
  • RF radio frequency
  • FIG. 4 is a component block diagram illustrating a communication system 400 configured for wireless communication in accordance with various embodiments.
  • the communication system 400 may include a wireless device 120 and one or more base stations 110 forming a wireless communication network 424, which may provide connections to external resources 422.
  • External resources 422 may include sources of information outside of system 400, external entities participating with the system 400, and/or other resources.
  • a wireless device 120 may be configured by machine-readable instructions 406.
  • Machine-readable instructions 406 may include one or more instruction modules.
  • the instruction modules may include computer program modules.
  • the instruction modules may include one or more of PS service monitoring module 408, reselection module 410, PS call module 412, barred base station list module 414, and/or other instruction modules.
  • the PS service monitoring module 408 may be configured to maintain a counter to record the number of abnormal PS service failure events that occur with the 5GNR network.
  • the PS service monitoring module 408 may be configured to determine whether a total number of abnormal PS service failure events during a time period exceeds a maximum counter value.
  • the time period may be ten seconds and the maximum counter value may be five.
  • the PS service monitoring module 408 may be configured to determine whether a PS service failure is an abnormal PS service failure, such as a termination of a PS service or PS call that is unexpected, or a normal PS service failure, such as a termination of a PS service or PS call that is expected.
  • An abnormal PS service failure can be any PS service failure that is unexpected.
  • An example indication of an abnormal PS service failure occurring may be a TCP/IP connection used for a PS service ending while UL data is still awaiting transmission in a pre-transmit queue on the wireless device.
  • the PS service monitoring module 408 may monitor the state of a TCP/IP connection and a pre-transmit queue to determine whether UL data is still awaiting transmission in the pre-transmit queue when a TCP/IP connection ends.
  • UL data awaiting transmission may indicate the TCP/IP connection ending is unexpected and the PS service failure is abnormal.
  • Another example indication of an abnormal PS service failure occurring may be a reachability test (e.g., a “Ping Test” ) failing, such as a network echo request being sent without receiving a network echo reply.
  • the PS service monitoring module 408 may monitor the state reachability tests, such as Ping Tests, and a reachability test failing (e.g., no echo reply being received) may indicate the PS service failure is unexpected and the PS service failure is abnormal.
  • a PS service failure may cause a data call (e.g., a PS call) to abnormally terminate.
  • the PS service monitoring module 408 may be configured to store indications of abnormal PS service failure events in a memory (e.g., electronic storage 424) .
  • the PS service monitoring module 408 may be configured to include timestamps with the indications of the abnormal PS service failure events, such as timestamps of when the abnormal PS service failures occurred and/or were detected.
  • the PS service monitoring module 408 may be configured to track the number of abnormal PS service failure event indications having timestamps falling in the time window corresponding to the time period, such as the total number of abnormal PS service failure events occurring in the ten seconds prior to the most recent abnormal PS service failure event.
  • the PS service monitoring module 408 may be configured to operate as a counter and timer combination to track the total number of abnormal PS service failure events in a time period. For example, the PS service monitoring module 408 may track a total number of abnormal PS service failures during a time period tracked by the timer, and the counter may be reset at each expiration of the timer. The PS service monitoring module 408 may be configured to indicate to the reselection module 410, the PS call module 412, and/or the barred base station list module 414 that the total number of abnormal PS service failure events during the time period exceeds the maximum counter value.
  • the reselection module 410 may be configured to select or reselect to a different base station, such as a new LTE cell (e.g., new eNB) in a 5G NSA network, a new gNB in a 5G SA network, etc.
  • the reselection module 410 may be configured to determine the cell IDs of all available base stations of the 5GNR network (e.g., all available LTE base stations of a 5G NSA network, all available gNBs of a 5G SA network, etc. ) providing coverage to a geographic location.
  • the reselection module 410 may be configured to select or reselect to a base station of the 5GNR network (e.g., a new LTE cell (e.g., a new eNB) of a 5G NSA network or a new gNB of a 5G SA network) not indicated in the barred base station list.
  • a base station of the 5GNR network e.g., a new LTE cell (e.g., a new eNB) of a 5G NSA network or a new gNB of a 5G SA network
  • the reselection module 410 may be configured to select one of the determined available base stations of the 5GNR network (e.g., a new LTE cell (e.g., an new eNB) of a 5G NSA network or a new gNB of a 5G SA network) not indicated in the barred base station list as a new serving base station of the 5GNR network (e.g., a new serving LTE cell (e.g., an new serving eNB) of a 5G NSA network or a new serving gNB of a 5G SA network) .
  • a new LTE cell e.g., an new eNB
  • 5G NSA e.g., an new serving eNB
  • the reselection module 410 may be configured to send an attach request (ATTACH_REQ) to a base station of a 5G NSA network, such as an LTE cell (e.g., an eNB) .
  • the attach request may indicate DCNR is supported by the wireless device.
  • the reselection module 410 may be configured to receive an attachment acceptance (ATTACH_ACCEPT) from a base station of a 5G NSA network, such as an LTE cell (e.g., an eNB) , in response to sending an attach request.
  • ATTACH_ACCEPT attachment acceptance
  • LTE cell e.g., an eNB
  • the reselection module 410 may be configured to send a registration request to a base station of a 5G SA network, such as a gNB.
  • the reselection module 410 may be configured to receive a registration acceptance from a base station of a 5G SA network, such as a gNB.
  • the reselection module 410 may be configured to send a PDU session establishment request to a base station of a 5G SA network, such as a gNB.
  • the reselection module 410 may be configured to receive a PDU session establishment acceptance from a base station of a 5G SA network, such as a gNB.
  • the reselection module 410 may be configured to receive an indication that the total number of abnormal PS service failure events during a time period exceeds a maximum counter value from the PS service monitoring module 408.
  • the reselection module 410 may be configured to select or reselect to a new base station, such as a new LTE cell (e.g., new eNB) in a 5G NSA network, a new gNB in a 5G SA network, etc., in response determining that the total number of abnormal PS service failure events during the time period exceeds the maximum counter value.
  • the reselection module 410 may be configured to send an indication of a selected serving base station of a 5GNR network to the PS call module 412.
  • the PS call module 412 may be configured to support a PS service via a base station in the 5GNR network, such as an LTE cell (e.g., an eNB) of a 5G NSA network, a gNB of a 5G SA network, etc.
  • the PS call module 412 may be configured to establish a PS call with a base station in the 5GNR network, such as an LTE cell (e.g., an eNB) of a 5G NSA network, a gNB of a 5G SA network, etc.
  • the PS call module 412 may be configured to receive an indication of a selected serving base station of the 5GNR network from the reselection module 410.
  • the barred base station list module 414 may be configured to add and/or remove cell IDs of base stations to/from a barred base station list.
  • the barred base station list module 414 may be configured to add a cell ID of a current base station of the 5GNR network the wireless device 120 is camped on to the barred base station list in response to determining that the total number of abnormal PS service failure events during the time period exceeds the maximum counter value.
  • the barred base station list module 414 may be configured to start a barred timer in response to adding a cell ID to the barred base station list.
  • the barred timer may be a timer configured to track an amount of time a cell ID has been indicated on the barred base station list.
  • the barred timer may be a countdown timer configured to expire after a period of time after starting, such as one hour after starting.
  • the barred base station list module 414 may be configured to determine whether the barred timer has expired.
  • the barred base station list module 414 may be configured may be configured to remove a cell ID of a base station from the barred base station list after expiration of the barred timer.
  • the wireless device 120, remote platform (s) 110, and/or external resources 422 may be operatively linked via one or more electronic communication links of the wireless communication network.
  • the wireless communication network may establish links via a network such as the Internet and/or other networks.
  • the wireless device 120 may include electronic storage 424, one or more processors 426 (e.g., an AP processor 216, modem processor 212, 252, etc. ) , one or more wireless transceivers 266, and/or other components.
  • the wireless device 120a-120e may include communication lines, or ports to enable the exchange of information with a network and/or other wireless device.
  • the illustration of the wireless device 120 is not intended to be limiting.
  • the wireless device 120 may include a plurality of hardware, software, and/or firmware components operating together to provide the functionality attributed herein to wireless device 120.
  • Electronic storage 424 may include non-transitory storage media that electronically stores information.
  • the electronic storage media of electronic storage 424 may include one or both of system storage that is provided integrally (i.e., substantially non-removable) with the wireless device 120 and/or removable storage that is removably connectable to the wireless device 120 via, for example, a port (e.g., a universal serial bus (USB) port, a firewire port, etc. ) or a drive (e.g., a disk drive, etc. ) .
  • Electronic storage 424 may include one or more of optically readable storage media (e.g., optical disks, etc. ) , magnetically readable storage media (e.g., magnetic tape, magnetic hard drive, floppy drive, etc.
  • Electronic storage 424 may store software algorithms, information determined by processor (s) 426, information received from the wireless device 120, information received from remote platform (s) 110, and/or other information that enables the wireless device 120 to function as described herein.
  • electronic storage 424 may store one or more barred base station lists.
  • a barred base station list may be a list stored in electronic storage that includes cell IDs of base stations 110 that are barred from use by the wireless device 120.
  • the cell IDs of base stations 110 that are barred from use by the wireless device 120 may be cell IDs of base stations 110 that the wireless device 120 may be prevented from attaching to or registering to.
  • the processor (s) 426 may be configured to provide information processing capabilities in the wireless device 120.
  • the processor (s) 426 may include one or more of a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and/or other mechanisms for electronically processing information.
  • the processor (s) 426 is illustrated as a single entity, this is for illustrative purposes only. In some embodiments, the processor (s) 426 may include a plurality of processing units and/or processor cores.
  • the processor (s) 426 may be configured to execute modules 408, 410, 412, and/or 414 and/or other modules by software; hardware; firmware; some combination of software, hardware, and/or firmware; and/or other mechanisms for configuring processing capabilities on processor (s) 426.
  • the term “module” may refer to any component or set of components that perform the functionality attributed to the module. This may include one or more physical processors during execution of processor readable instructions, the processor readable instructions, circuitry, hardware, storage media, or any other components.
  • modules 408, 410, 412, and/or 414 are illustrated as being implemented within a single processing unit, in embodiments in which the processor (s) 426 includes multiple processing units and/or processor cores, one or more of modules 408, 410, 412, and/or 414 may be implemented remotely from the other modules.
  • the description of the functionality provided by the different modules 408, 410, 412, and/or 414 described below is for illustrative purposes, and is not intended to be limiting, as any of modules 408, 410, 412, and/or 414 may provide more or less functionality than is described.
  • one or more of the modules 408, 410, 412, and/or 414 may be eliminated, and some or all of its functionality may be provided by other modules 408, 410, 412, and/or 414.
  • the processor (s) 426 may be configured to execute one or more additional modules that may perform some or all of the functionality attributed below to one of the modules 408, 410, 412, and/or 414.
  • FIG. 5A is a process flow diagram illustrating a method 500 that may be performed by a processor of a wireless device for recovering from PS service failure in a 5GNR network, such as a 5G SA network or 5G NSA network.
  • the method 500 may be implemented by one or more processors (e.g., 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (e.g., 120, 120a-120e, 200, 320) .
  • the processor may establish a PS call with the base station of the 5GNR network.
  • establishing a PS call with the base station of the 5G NSA network such as an LTE cell (e.g., an eNB)
  • a service request for data traffic e.g., data traffic associated with an Internet browser, social media application, etc.
  • the wireless device can establish a data call (i.e., a PS call) with the base station of the 5G NSA network, such as an LTE cell (e.g., an eNB) , to send/receive the data traffic.
  • a data call i.e., a PS call
  • the base station of the 5G NSA network such as an LTE cell (e.g., an eNB)
  • establishing a PS call with the base station of the 5G SA network such as a gNB
  • the wireless device can establish a data call (i.e., a PS call) with the base station of the 5G SA network, such as a gNB, to send/receive the data traffic.
  • a data call i.e., a PS call
  • the processor may determine whether an abnormal PS service failure is detected.
  • An abnormal PS service failure can be any PS service failure that was unexpected.
  • One example indication of an abnormal PS service failure occurring may be a TCP/IP connection used for a PS service ending while UL data is still awaiting transmission in a pre-transmit queue on the wireless device.
  • Another example indication of an abnormal PS service failure occurring may be a reachability test (e.g., a “Ping Test” ) failing, such as a network echo request being sent without receiving a network echo reply.
  • the PS service failure may cause the data call (i.e., the PS call) to abnormally terminate.
  • the processor may continue to await an abnormal PS service failure and determine whether an abnormal PS service failure is detected in determination block 504.
  • the processor may store an indication of an abnormal PS service failure event in block 506.
  • indications of the abnormal PS service failure events may be stored.
  • the indications of the abnormal PS service failure events may include timestamps of when the abnormal PS service failures occurred or were detected.
  • the processor may determine whether a total number of abnormal PS service failure events during a time period exceeds a maximum counter value.
  • a processor of a wireless device e.g., an application processor (AP) , modem processor, etc.
  • AP application processor
  • modem processor modem processor
  • the counter reaching a maximum counter value may indicate that the 5GNR network, such as a 5G NSA network or 5G SA network, is operating abnormally and PS service failure may be occurring.
  • the counter may track the total number of abnormal PS service failure events during a time period.
  • the time period may be ten seconds and the maximum counter value may be five abnormal PS service failure events.
  • the time period such as ten seconds, may extend backward from the most recent abnormal PS service failure.
  • the counter may track the number of abnormal PS service failure indications having timestamps falling in the time window corresponding to the time period, such as the total number of abnormal PS service failure events occurring or detected in the ten seconds prior to the most recent abnormal PS service failure.
  • a counter and timer combination may be used to track the total number of abnormal PS service failure events during a time period and the operations of block 506 may be optional.
  • the counter may track a total number of abnormal PS service failure events during a time period tracked by the timer, and the counter may be reset at each expiration of the timer.
  • the processor may compare the counter value to the maximum counter value to determine whether a total number of abnormal PS service failure events during a time period exceeds a maximum counter value.
  • the processor may establish a PS call with the base station of the 5GNR network in block 506. In this manner, the processor may attempt to reestablish the PS service by reestablishing a PS call with the base station of the 5GNR network, such as the base station of the 5G NSA network or 5G SA network.
  • the processor may add the cell ID of a current base station of the 5GNR network the wireless device is camped on to a barred base station list in block 510.
  • the current base station of the 5GNR network the wireless device is camped on may be a current LTE cell of a 5G NSA network the wireless device is camped on (e.g., a current serving LTE cell) or the current base station of the 5GNR network the wireless device is camped on may be a current gNB of a 5G SA network the wireless device is camped on (e.g., a current serving gNB) .
  • a barred base station list may be a list stored in a memory of the wireless device including cell IDs of base stations that are barred from use by the wireless device.
  • the cell IDs of base stations that are barred from use by the wireless device may be cell IDs of base stations that the wireless device may be prevented from attaching to or registering to.
  • the barred base station list may be a listing of cell IDs the wireless device is restricted from selecting to or reselecting to.
  • the wireless device may be configured to not camp on any base station having a cell ID indicated in the barred base station list.
  • the processor may initiate reselection to a base station of the 5GNR network not indicated in the barred base station list.
  • the reselection to a base station of the 5GNR network not indicated in the barred base station list may be in response to adding the cell ID of the current base station of the 5GNR network the wireless device is camped on to the barred base station list.
  • reselection to a base station of the 5GNR network may include determining cell IDs of available base stations, such as cell IDs of available gNBs, cell IDs of available LTE cells, etc., and comparing the determined cell IDs of available base stations to the barred base station list.
  • the wireless device may be prevented from selecting any base station with a determined cell ID indicated in the barred base station list as the serving base station during reselection.
  • the first base station’s cell ID being indicated in the barred base station list may prevent the first base station from being selected as the serving base station and the second base station may be selected as the serving base station.
  • the processor may start a barred timer.
  • the barred time may be started in response to adding the cell ID of the current base station of the 5GNR network the wireless device is camped on to the barred base station list.
  • the barred timer may be a timer configured to track an amount of time a cell ID has been indicated on the barred base station list.
  • the barred timer may be a countdown timer configured to expire after a period of time after starting, such as one hour after starting.
  • the processor may determine whether the barred timer has expired.
  • the processor may await expiration of the barred timer and continue to determine whether the barred timer has expired in determination block 516.
  • the processor may remove the cell ID of the current base station of the 5GNR network the wireless device is camped on from the barred base station list in block 518. In this manner, the processor may remove the cell ID associated with the expired barred timer and a previously barred base station may be set free for use in future selection or reselection by the wireless device.
  • FIG. 5B is a process flow diagram illustrating a method 550 for reselection to a base station of a 5GNR network not indicated in a barred base station list in accordance with various embodiments.
  • the method 550 may be implemented by one or more processors (e.g., 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (e.g., 120, 120a-120e, 200, 320) .
  • the method 550 may be performed in conjunction with the operations of method 500 (FIG. 5A) .
  • the operations of method 550 may be performed as part of the operations for reselection to a base station of the 5GNR network not indicated in the barred base station list in block 512 (FIG. 5A) .
  • the operations of method 550 may be performed by a wireless device that supports DCNR in a 5G NSA network.
  • the processor may determine any available LTE cells of the 5G NSA network and cell IDs of any determined available LTE cells of the 5G NSA network.
  • a wireless device may be in a geographic location that that is overlapped by coverage areas of more than one LTE cell (e.g., more than one eNB) .
  • the wireless device may be configured to determine the cell IDs of all available LTE cells of a 5G NSA network providing coverage to the geographic location of the wireless device.
  • the processor may select one of the determined available LTE cells of the 5G NSA network as a new serving LTE cell of the 5G NSA network based at least in part on the new serving LTE cell of the 5G NSA network having a cell ID not indicated in the barred base station list.
  • selecting one of the determined available LTE cells of the 5G NSA network as a new serving LTE cell of the 5G NSA network based at least in part on the new serving LTE cell of the 5G NSA network having a cell ID not indicated in the barred base station list may include comparing the determined cell IDs of available LTE cells to the barred base station list.
  • the wireless device may be prevented from selecting any LTE cell with a determined cell ID indicated in the barred base station list as the serving LTE cell during reselection. For example, though a first LTE cell may have a better signal (e.g., a stronger signal) than a second LTE cell, the first LTE cell’s cell ID being indicated in the barred base station list may prevent the first LTE cell from being selected as the new serving LTE cell and the second LTE cell may be selected as the new serving LTE cell of the 5G NSA network.
  • a first LTE cell may have a better signal (e.g., a stronger signal) than a second LTE cell
  • the first LTE cell’s cell ID being indicated in the barred base station list may prevent the first LTE cell from being selected as the new serving LTE cell and the second LTE cell may be selected as the new serving LTE cell of the 5G NSA network.
  • the processor may send a new attach request to the new serving LTE cell of the 5G NSA network, the new attach request indicating DCNR is supported by the wireless device.
  • the processor may send a new attach request (ATTACH_REQ) indicating DCNR is supported by the wireless device to the LTE cell of the 5G NSA network (e.g., an eNB) .
  • the processor may receive a new attach acceptance from the new serving LTE cell of the 5G NSA network.
  • the new attach acceptance (ATTACH_ACCEPT) may be received from the LTE cell of the 5G NSA network, such an eNB, in response to sending the new attach request (ATTACH_REQ) to the new serving LTE cell of the 5G NSA network.
  • the processor may establish a PS call with the new serving LTE cell of the 5G NSA network.
  • Establishing the new PS call with the LTE cell of the 5G NSA network may include sending a service request for data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) to the new serving LTE cell of the 5G NSA network, such as an LTE cell (e.g., an eNB) , after adding the LTE cell the wireless device was previously camped on to the barred cell list.
  • the wireless device can establish a new data call (i.e., a new PS call) with the new serving LTE cell of the 5G NSA network to send/receive the data traffic.
  • Establishing the new PS call may reestablish PS service on the wireless device upon the total number of abnormal PS service failure events during the time period exceeding the maximum counter value.
  • FIG. 5C is a process flow diagram illustrating a method 570 for reselection to a base station of a 5GNR network not indicated in a barred base station list in accordance with various embodiments.
  • the method 570 may be implemented by one or more processors (e.g., 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (e.g., 120, 120a-120e, 200, 320) .
  • the method 570 may be performed in conjunction with the operations of method 500 (FIG. 5A) .
  • the operations of method 570 may be performed as part of the operations for reselection to a base station of the 5GNR network not indicated in the barred base station list in block 512 (FIG. 5A) .
  • the operations of method 570 may be performed by a wireless device in a 5G SA network.
  • the processor may determine any available gNBs of the 5G SA network and cell IDs of any determined available gNBs of the 5G SA network.
  • a wireless device may be in a geographic location that that is overlapped by coverage areas of more than one gNB.
  • the wireless device may be configured to determine the cell IDs of all available gNBs of a 5G SA network providing coverage to the geographic location of the wireless device.
  • the processor may select one of the determined available gNBs of the 5G SA network as a new serving gNB of the 5G SA network based at least in part on the new serving gNB of the 5G SA network having a cell ID not indicated in the barred base station list.
  • selecting one of the determined available gNBs of the 5G SA network as a new serving gNB of the 5G SA network based at least in part on the new serving gNB of the 5G SA network having a cell ID not indicated in the barred base station list may include comparing the determined cell IDs of available gNBs to the barred base station list.
  • the wireless device may be prevented from selecting any gNB with a determined cell ID indicated in the barred base station list as the serving gNB during reselection. For example, though a first gNB may have a better signal (e.g., a stronger signal) than a second gNB, the first gNB’s cell ID being indicated in the barred base station list may prevent the first gNB from being selected as the new serving gNB and the second gNB may be selected as the new serving gNB of the 5G SA network.
  • a better signal e.g., a stronger signal
  • the processor may send a new registration request to the new serving gNB of the 5G SA network.
  • the processor may receive a new registration acceptance from the new serving gNB of the 5G SA network.
  • the new registration acceptance from the new serving gNB of the 5G SA network may be received in response to sending the new registration request.
  • the processor may send a new PDU session establishment request to the new serving gNB of the 5G SA network.
  • the new PDU session establishment request to the new serving gNB of the 5G SA network may be sent in response to receiving the new registration acceptance.
  • the processor may receive a new PDU session establishment acceptance from the new serving gNB of the 5G SA network.
  • the new PDU session establishment acceptance from the new serving gNB of the 5G SA network may be received in response to sending the new PDU session establishment request.
  • the processor may establish a new PS call with the new serving gNB of the 5G SA network.
  • the new PS call with the new serving gNB of the 5G SA network may be established in response to receiving the new PDU session establishment acceptance.
  • the new PS call may support the sending/receiving of data traffic (e.g., data traffic associated with an Internet browser, social media application, etc. ) .
  • data traffic e.g., data traffic associated with an Internet browser, social media application, etc.
  • the wireless device may be considered to have recovered from the abnormal PS service failure.
  • the user may be able to access the Internet, improving the user experience in comparison to repeated abnormal PS service failures
  • FIG. 6A is a call flow diagram illustrating example interactions between one or more processors (such as 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (such as the wireless device 120a-120e, 200, 320, 120a-120e) and a base station (e.g., base station 110a, 350, 110) of a 5G NSA network (e.g., network 100) in accordance with various embodiments.
  • the interactions illustrated in FIG. 6A reflect example implementations of the various embodiment methods for recovering from PS service failure in a 5G NSA network, such as one or more operations of methods 500 and/or 550.
  • FIG. 6A illustrates an example implementation in which some operations are performed by an AP processor (labeled DATA (UE) in FIG. 6A) of the wireless device and some operations are performed by a modem processor (labeled NAS (UE) in FIG. 6A) of the wireless device while the wireless device is communicating with a base station of the 5G NSA network (labeled LTE anchor cell 1 or LTE anchor cell 2 in FIG. 6A) .
  • AP processor labeleled DATA (UE) in FIG. 6A
  • NAS modem processor
  • FIG. 6A illustrates that in response to determining an abnormal PS service failure event occurred (whether a single abnormal PS failure as shown in FIG. 6A or a maximum number of failure events) , the AP processor may indicate the PS service failure (e.g., via a DATASTOP indication) to the modem processor and the modem processor add an indication of the cell ID of LTE anchor cell 1 to a barred base station list (labeled as Add cell 1 to NSA-BAR_CELL_LIST in FIG. 6A) .
  • the modem processor may reselect to LTE anchor cell 2 (labeled as Cell reselect to cell 2 in FIG. 6A) and resume data service via the new serving LTE cell (LTE anchor cell 2) via a sequence of attach requests indicating DCNR is supported, attach acceptances, and service requests (e.g., PS call establishments) .
  • FIG. 6B is a call flow diagram illustrating example interactions between one or more processors (such as 210, 212, 214, 216, 218, 252, 260, 426) of a wireless device (such as the wireless device 120a-120e, 200, 320, 120a-120e) and a base station (e.g., base station 110a, 350, 110) of a 5G SA network (e.g., network 100) in accordance with various embodiments.
  • the interactions illustrated in FIG. 6B reflect example implementations of the various embodiment methods for recovering from PS service failure in a 5G SA network, such as one or more operations of methods 500 and/or 570.
  • FIG. 6B illustrates an example implementation in which some operations are performed by an AP processor (labeled DATA (UE) in FIG. 6B) of the wireless device and some operations are performed by a modem processor (labeled NAS (UE) in FIG. 6B) of the wireless device while the wireless device is communicating with a base station of the 5G SA network (labeled 5G SA CELL 1 or 5G SA CELL 2 in FIG. 6B) .
  • AP processor labeleled DATA (UE) in FIG. 6B
  • NAS modem processor
  • FIG. 6B illustrates that in response to determining a maximum number of abnormal PS service failure events occurred, the AP processor may indicate the PS service failure (e.g., via a DATASTOP indication) to the modem processor and the modem processor add an indication of the cell ID of 5G SA CELL 1 to a barred base station list (labeled as Add cell 1 to SA-BAR_CELL_LIST in FIG. 6B) .
  • the modem processor may reselect to 5G SA CELL 2 (labeled as Cell reselect to cell 2 in FIG. 6B) and resume data service via the new serving gNB (5G SA CELL 2) via a sequence of registration requests, registration acceptances, PDU session establishment requests, and PDU session establishment acceptances (e.g., PS call establishments) .
  • FIG. 7 is a component block diagram of a network computing device 700 suitable for use with various embodiments.
  • Such network computing devices may include at least the components illustrated in FIG. 7.
  • the network computing device 700 may include a processor 701 coupled to volatile memory 702 and a large capacity nonvolatile memory, such as a disk drive 703.
  • the network computing device 700 may also include a peripheral memory access device such as a floppy disc drive, compact disc (CD) or digital video disc (DVD) drive 706 coupled to the processor 701.
  • the network computing device 700 may also include network access ports 704 (or interfaces) coupled to the processor 701 for establishing data connections with a network, such as the Internet and/or a local area network coupled to other system computers and servers.
  • a network such as the Internet and/or a local area network coupled to other system computers and servers.
  • the network computing device 700 may include one or more antennas 707 for sending and receiving electromagnetic radiation that may be connected to a wireless communication link.
  • the network computing device 700 may include additional access ports, such as USB, Firewire, Thunderbolt, and the like for coupling to peripherals, external memory, or other devices.
  • FIG. 8 is a component block diagram of a wireless device 800 suitable for use with various embodiments.
  • various embodiments may be implemented on a variety of wireless device 800 (e.g., the wireless device 120a-120e, 200, 320, 120a-120e) , an example of which is illustrated in FIG. 8 in the form of a smartphone.
  • the wireless device 800 may include a first SOC 202 (e.g., a SOC-CPU) coupled to a second SOC 204 (e.g., a 5G capable SOC) .
  • the first and second SOCs 202, 204 may be coupled to internal memory 424, 816, a display 812, and to a speaker 814.
  • the wireless device 800 may include an antenna 804 for sending and receiving electromagnetic radiation that may be connected to a wireless transceiver 266 coupled to one or more processors in the first and/or second SOCs 202, 204.
  • the wireless device 800 may also include menu selection buttons or rocker switches 820 for receiving user inputs.
  • the wireless device 800 also includes a sound encoding/decoding (CODEC) circuit 810, which digitizes sound received from a microphone into data packets suitable for wireless transmission and decodes received sound data packets to generate analog signals that are provided to the speaker to generate sound.
  • CODEC sound encoding/decoding
  • one or more of the processors in the first and second SOCs 202, 204, wireless transceiver 266 and CODEC 810 may include a digital signal processor (DSP) circuit (not shown separately) .
  • DSP digital signal processor
  • the processors of the wireless network computing device 700 and the wireless device 800 may be any programmable microprocessor, microcomputer or multiple processor chip or chips that can be configured by software instructions (applications) to perform a variety of functions, including the functions of the various embodiments described below.
  • multiple processors may be provided, such as one processor within an SOC 204 dedicated to wireless communication functions and one processor within an SOC 202 dedicated to running other applications.
  • Software applications may be stored in the memory 424, 816 before they are accessed and loaded into the processor.
  • the processors may include internal memory sufficient to store the application software instructions.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a wireless device and the wireless device may be referred to as a component.
  • One or more components may reside within a process and/or thread of execution and a component may be localized on one processor or core and/or distributed between two or more processors or cores. In addition, these components may execute from various non-transitory computer readable media having various instructions and/or data structures stored thereon. Components may communicate by way of local and/or remote processes, function or procedure calls, electronic signals, data packets, memory read/writes, and other known network, computer, processor, and/or process related communication methodologies.
  • Such services and standards include, e.g., third generation partnership project (3GPP) , LTE systems, third generation wireless mobile communication technology (3G) , fourth generation wireless mobile communication technology (4G) , fifth generation wireless mobile communication technology (5G) , global system for mobile communications (GSM) , universal mobile telecommunications system (UMTS) , 3GSM, general Packet Radio service (GPRS) , code division multiple access (CDMA) systems (e.g., cdmaOne, CDMA1020TM) , enhanced data rates for GSM evolution (EDGE) , advanced mobile phone system (AMPS) , digital AMPS (IS-136/TDMA) , evolution-data optimized (EV-DO) , digital enhanced cordless telecommunications (DECT) , Worldwide Interoperability for Microwave Access (WiMAX) , wireless local area network (WLAN) , Wi-
  • 3GPP third generation wireless mobile communication technology
  • 4G fourth generation wireless mobile communication technology
  • 5G fifth generation wireless mobile communication technology
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of receiver smart objects, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Alternatively, some operations or methods may be performed by circuitry that is specific to a given function.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or code on a non-transitory computer-readable storage medium or non-transitory processor-readable storage medium.
  • the operations of a method or algorithm disclosed herein may be embodied in a processor-executable software module or processor-executable instructions, which may reside on a non-transitory computer-readable or processor-readable storage medium.
  • Non-transitory computer-readable or processor-readable storage media may be any storage media that may be accessed by a computer or a processor.
  • non-transitory computer-readable or processor-readable storage media may include RAM, ROM, EEPROM, FLASH memory, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage smart objects, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer.
  • Disk and disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of non-transitory computer-readable and processor-readable media.
  • the operations of a method or algorithm may reside as one or any combination or set of codes and/or instructions on a non-transitory processor-readable storage medium and/or computer-readable storage medium, which may be incorporated into a computer program product.

Abstract

Des modes de réalisation concernent des systèmes et des procédés permettant une restauration rapide par un dispositif sans fil à partir d'une défaillance de service de commutation par paquets (PS) dans un réseau nouvelle radio (NR) de cinquième génération (5G) (5GNR), tel qu'un réseau 5G non autonome (NSA) ou un réseau autonome 5G (SA). Divers modes de réalisation permettant une restauration à partir d'une défaillance de service PS peuvent consister à : ajouter un identifiant de cellule (ID cellule) d'une station de base actuelle du réseau 5GNR sur laquelle est campé le dispositif sans fil à une liste de stations de base interdites en réponse à la détermination du fait qu'un nombre total d'événements de défaillance de service PS anormaux pendant une période dépasse une valeur de compteur maximale ; et déclencher une resélection vers une station de base du réseau 5GNR non indiquée dans la liste de stations de base interdites en réponse à l'ajout de l'ID cellule de la station de base actuelle du réseau 5GNR sur laquelle est campé le dispositif sans fil à la liste de stations de base interdites.
PCT/CN2020/086103 2020-04-22 2020-04-22 Procédé de restauration rapide d'un service 5g à partir d'une interruption anormale des données WO2021212361A1 (fr)

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