WO2022032432A1 - Équipement utilisateur et procédé d'amélioration des défaillances de redirection répétées - Google Patents

Équipement utilisateur et procédé d'amélioration des défaillances de redirection répétées Download PDF

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Publication number
WO2022032432A1
WO2022032432A1 PCT/CN2020/108198 CN2020108198W WO2022032432A1 WO 2022032432 A1 WO2022032432 A1 WO 2022032432A1 CN 2020108198 W CN2020108198 W CN 2020108198W WO 2022032432 A1 WO2022032432 A1 WO 2022032432A1
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WIPO (PCT)
Prior art keywords
iot
network
redirection
capabilities
epc
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PCT/CN2020/108198
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English (en)
Inventor
Chenho Chin
Jianhua Liu
Haorui YANG
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Guangdong Oppo Mobile Telecommunications Corp., Ltd.
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Application filed by Guangdong Oppo Mobile Telecommunications Corp., Ltd. filed Critical Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority to PCT/CN2020/108198 priority Critical patent/WO2022032432A1/fr
Publication of WO2022032432A1 publication Critical patent/WO2022032432A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present disclosure relates to the field of communication systems, and more particularly, to a user equipment (UE) and a method for improving repeated redirection failures, which can provide a good communication performance and/or provide high reliability.
  • UE user equipment
  • CIoT Cellular Internet of Things
  • UE user equipment
  • NB-IoT narrowband Internet of Things
  • eMTC enhanced messaging communication
  • a current CIoT system can be an evolved packet system (EPS) .
  • EPS evolved packet system
  • 3GPP third generation partnership project
  • 5G fifth generation
  • the CIoT UE supporting CIoT 5G system (5GS) characteristic and CIoT EPS characteristic can be accessed to the EPS and can also be accessed to a 5GS.
  • the 5GC may redirect the CIoT device to the EPC according to an operator policy or a load balancing requirement.
  • the EPC can redirect the CIoT device to the 5GC according to the operator policy or the load balancing requirement.
  • the UE may re-enable the N1 mode capability for 3GPP access, and indicate to lower layers to remain camped in evolved universal terrestrial radio access (E-UTRA) connected to 5G core network (5GCN) of the previously registered public land mobile network (PLMN) and proceed with the appropriate 5G system mobility management (5GMM) procedure.
  • E-UTRA evolved universal terrestrial radio access
  • 5GCN 5G core network
  • PLMN public land mobile network
  • an access and management function may repeat the rejection with EPS redirection. Then the above procedure will repeat again and again. This may cause that the UE cannot get the service from the network for a very long time and that a lot of the non-access stratum (NAS) signalling is wasted, especially considering static or low mobility UEs.
  • AMF access and management function
  • An object of the present disclosure is to propose a user equipment (UE) and a method for improving repeated redirection failures, which can solve issues in the prior art, provide enhancements to mitigate against repeated redirection failures, avoid ping-pong effect, provide a good communication performance and/or provide high reliability.
  • UE user equipment
  • a method for improving repeated redirection failures of a user equipment includes performing a registration update to a network and reverting back to one or more original UE S1 capabilities and/or one or more original UE Internet of Things (IoT) capabilities informing the network of an actual support of a UE S1 mode and/or a UE IoT.
  • IoT Internet of Things
  • a user equipment in a second aspect of the present disclosure, includes a memory, a transceiver, and a processor coupled to the memory and the transceiver.
  • the processor is configured to perform a registration update to a network and revert back to one or more original UE S1 capabilities and/or one or more original UE Internet of Things (IoT) capabilities informing the network of an actual support of a UE S1 mode and/or a UE IoT.
  • IoT Internet of Things
  • a non-transitory machine-readable storage medium has stored thereon instructions that, when executed by a computer, cause the computer to perform the above methods.
  • a chip includes a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute the above methods.
  • a computer readable storage medium in which a computer program is stored, causes a computer to execute the above methods.
  • a computer program product includes a computer program, and the computer program causes a computer to execute the above methods.
  • a computer program causes a computer to execute the above methods.
  • FIG. 1 is a schematic diagram of a system architecture.
  • FIG. 2 is a schematic diagram of another system architecture.
  • FIG. 3 is a schematic diagram illustrating an evolved packet system (EPS) .
  • EPS evolved packet system
  • FIG. 4 is an architectural diagram illustrating a simplified fifth generation system (5GS) .
  • FIG. 5 is a block diagram of a user equipment (UE) and a network for improving repeated redirection failures in a communication network system according to an embodiment of the present disclosure.
  • UE user equipment
  • FIG. 6 is a flowchart illustrating a method for improving repeated redirection failures of a UE according to an embodiment of the present disclosure.
  • FIG. 7 is a block diagram of a system for wireless communication according to an embodiment of the present disclosure.
  • FIG. 1 illustrates a system architecture 40.
  • the system architecture 40 includes a mobility management network element 42 and an access network element 44.
  • the system architecture 40 may further include a mobility management network element 46 and a terminal 48.
  • the mobility management element 42 is a mobility management element of a first system
  • the access network element 44 is an access network element of the first system
  • the mobility management element 46 is a mobility management element of a second system.
  • the first system and the second system are different systems.
  • the first system may be fifth generation system (5GS) and the second system is evolved packet system (EPS) .
  • the first system may be EPS and the second system may be 5GS. It should be understood that the first system and the second system may be other systems, and the application is not limited thereto.
  • the system architecture 40 described above may be used to perform a method of redirection.
  • FIG. 2 illustrates a system architecture 50.
  • the system architecture 50 includes a terminal 52 and a mobility management element 54.
  • the system architecture 50 may further include an access network element 56.
  • the mobility management element 54 is a mobility management element of the first system
  • the access network element 56 is an access network element of the first system.
  • the first system and the second system are different systems.
  • the first system may be 5GS and the second system is EPS.
  • the first system may be EPS and the second system 5 GS. It should be understood that the first system and the second system may be other systems, and the application is not limited thereto.
  • the system architecture 50 described above may be used to perform another method of redirection.
  • a terminal in some embodiments of the present disclosure may refer to a user equipment (UE) , an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment.
  • UE user equipment
  • the terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) , a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (PLMN) , and the like, which are not limited in this embodiment.
  • the terminal in some embodiments of the present disclosure may be a cellular Internet of Things (CIoT) terminal.
  • the CIoT terminal has characteristics of low cost, simple function, low power consumption, and infrequent user data transmission.
  • FIG. 3 illustrates an EPS.
  • the EPS may specifically include the following network entities.
  • Evolved universal terrestrial radio access network (EUTRAN) EUTRAN consists only of enodeBs on the network side. The enodeB performs tasks similar to those performed by the nodeBs and radio network controller (RNC) together in UTRAN. The aim of this simplification is to reduce the latency of all radio interface operations.
  • eNodeBs are connected to each other via the X2 interface, and they connect to the packet switched (PS) core network via the S1 interface. 2.
  • PS packet switched
  • MME all control plane functions mainly responsible for user, i.e., session management, include non-access-stratum (NAS) signaling and security, tracking area List management, packet data network gateway (P-GW) , and SGW selection, and the like.
  • SGW SGW is mainly responsible for data transmission, forwarding, route switching and the like of the user equipment, and serves as a local mobility anchor point when the user equipment is switched between eNodeBs (for each user equipment, only one SGW serves the user equipment at each moment) .
  • P-GW As an anchor point of packet data network (PDN) connection, PDN gateway is responsible for IP address allocation of the user equipment, data packet filtering of the user equipment, rate control, generation of charging information, and the like. 5.
  • SGSN Serving GPRS Support Node
  • GERAN 2G access network GSM/EDGE radio access network
  • UTRAN 3G access network Universal Terrestrial Radio Access Network
  • EPC EPS core network
  • PCRF Policy and Charging Rules Function
  • PCRF Policy and Charging Rules Function
  • FIG. 4 illustrates a 5GS architecture.
  • the 5GS includes a UE, (radio) access network, ( (R) AN) , a core network (core) , and a data network (DN) .
  • the UE, the (R) AN, and the core are main components constituting the 5GS, and logically they may be divided into two parts, i.e., a user plane and a control plane, where the control plane is responsible for management of the mobile network and the user plane is responsible for transmission of service data.
  • N2 interface is located between the (R) AN control plane and the core control plane
  • N3 interface is located between the (R) AN user plane and the core user plane
  • N6 interface is located between the core user plane and the data network.
  • the redirection of some embodiments the present disclosure is described in detail below by taking redirection of a terminal from 5GS to EPS and redirection of a terminal from EPS to 5GS as examples, respectively.
  • the first system is the 5GS
  • the second system is the EPS
  • the terminal is the UE
  • the mobility management network element of the first system is AMF
  • the mobility management network element of the second system is MME
  • the access network element of the first system is S-RAN
  • the access network element of the second system is T-RAN.
  • the terminal In the scene that the terminal is redirected from the EPS to the 5GS, the terminal is UE, the first system is the EPS, the second system is the 5GS, the mobility management network element of the first system is MME, the mobility management network element of the second system is AMF, the access network element of the first system is S-RAN, and the access network element of the second system is T-RAN.
  • a scenario can happen that when a NB-IoT UE connected to 5GC gets told by the 5GC to redirect to EPC, that upon attempting such a re-direction, the UE then cannot find a suitable NB-IoT cell connected to EPC or cannot find an E-UTRA cell that supports CIoT EPS optimization.
  • the issue then arises is that the PLMN could trigger the UE to do re-direction to EPC (again) . Therefore, the UE then attempts that redirection (again) and fails (again) and so comes back to the original PLMN (again) . Therefore, there will be a ping-pong leading to waste of radio resources and also to UE not getting service.
  • UE when UE re-tries the registration to 5GC, UE can set EPS Preferred CIoT network behaviour in the 5GS update type IE to "no additional information" and does not indicate the support of EPS CIoT optimization. This can clarify that the UE can set the EPS Preferred CIoT network behaviour in the 5GS update type IE to "no additional information" and does not indicate the support of EPS CIoT optimization in the registration request.
  • the UE may re-enable the N1 mode capability for 3GPP access, and indicate to lower layers to remain camped in E-UTRA connected to 5GCN of the previously registered PLMN and proceed with the appropriate 5GMM procedure.
  • the UE may set both CP CIoT bit and UP CIoT bit in the S1 UE network capability IE to "Control plane CIoT EPS optimization not supported" and "User plane CIoT EPS optimization not supported” respectively and the EPS Preferred CIoT network behaviour bit in the 5GS update type IE to "no additional information" in the REGISTRATION REQUEST message.
  • the UE on return to previous PLMN can, when initiating the registration procedure, indicate to the network that it does not support EPS CIoT optimization.
  • UE when UE re-tries the registration to 5GC, UE can determine to not indicate it supports S1 mode. Then, 5GC will not redirect UE and ping-pong can be avoided.
  • the UE if the UE is in NB-N1 mode: If lower layers cannot find a suitable NB-IoT cell connected to EPC or there is no suitable NB-IoT cell connected to EPC which supports CIoT EPS optimizations that are supported by the UE, the UE may re-enable the N1 mode capability for 3GPP access, and indicate to lower layers to remain camped in E-UTRA connected to 5GCN of the previously registered PLMN and proceed with the appropriate 5GMM procedure.
  • the UE can determine to disable the S1 mode capability and set the S1 mode bit to "S1 mode not supported" in the 5GMM capability IE in the REGISTRATION REQUEST message.
  • the UE may re-enable the N1 mode capability for 3GPP access, and indicate to lower layers to remain camped in E-UTRA connected to 5GCN of the previously registered PLMN and proceed with the appropriate 5GMM procedure.
  • WB wide band
  • the UE can determine to disable the S1 mode capability and set the S1 mode bit to "S1 mode not supported" in the 5GMM capability IE in the REGISTRATION REQUEST message.
  • the UE on return to previous PLMN can, when initiating the registration procedure, indicate to the network that it cannot support (or work in) the EPS system. This can be done by the UE disabling the S1 mode capability and set the S1 mode bit to "S1 mode not supported" in the 5GMM capability IE in the REGISTRATION REQUEST message when registering back to the previously registered PLMN.
  • S1 mode denotes the EPS/EPC mode of operation. Therefore, in line with that descriptions here in some embodiments of the present disclosure making mention of UE operating in S1 mode means UE is operating in EPS/EPC. Similarly, one or more UE S1 mode capabilities refer to one or more UE capabilities in the EPS/EPC system.
  • the reason (or cause) for failure of the redirect to EPC ordered by the 5GC PLMN to the UE might change over time –in a short period or over a longer period.
  • one reason for the failure of redirect is that the UE cannot not find suitable NB-IoT cell connected to EPC or cannot find an E-UTRA cell that supports CIoT EPS optimization in the location where the UE was. But as the UE moves its position, it might get into radio coverage of other IoT cells in EPC may be suitable. Or it could be that there is a temporary outage of the cell itself or that there was a temporary radio shadow and UE could not "see" the IoT cells.
  • the network has its reason to want to redirect UE away from itself towards EPC/EPS and while refraining from triggering UEs to redirect for a while in order to stop ping-pong –and waste resources for both NW and UE –might be acceptable but improvements ought to be considered.
  • the UE making PLMN selection to some other PLMN to avoid ping-pong.
  • IoT devices are most likely to be in their Home PLMN, in most cases and selecting way from one's HPLMN when it is available, will mean an automatic return once the background scan for higher prioritized PLMN (as illustrated in TS 23.122, subclause 4.4.3.4) expires.
  • Other current technical solutions considered are 1. Introduce a new parameter sent by UE to network indicating redirection failure to which network knows UE cannot meet the command to re-direct and so allow UE to stay in 5GC. 2. The network keeps a timer where if UE comes back to the network because of redirection failure, the network stops redirecting the UE to EPC for that period of time guarded by the timer.
  • FIG. 5 illustrates that, in some embodiments, a user equipment (UE) 10 and a network (e.g., a core network) 20 for improving repeated redirection failures in a communication network system 30 according to an embodiment of the present disclosure are provided.
  • the communication network system 30 includes the UE 10 and the network 20.
  • the UE 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12, the transceiver 13.
  • the network 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22, the transceiver 23.
  • the processor 11 or 21 may be configured to implement proposed functions, procedures and/or methods described in this description. Layers of radio interface protocol may be implemented in the processor 11 or 21.
  • the memory 12 or 22 is operatively coupled with the processor 11 or 21 and stores a variety of information to operate the processor 11 or 21.
  • the transceiver 13 or 23 is operatively coupled with the processor 11 or 21, and the transceiver 13 or 23 transmits and/or receives a radio signal.
  • the processor 11 or 21 may include application-specific integrated circuit (ASIC) , other chipset, logic circuit and/or data processing device.
  • the memory 12 or 22 may include read-only memory (ROM) , random access memory (RAM) , flash memory, memory card, storage medium and/or other storage device.
  • the transceiver 13 or 23 may include baseband circuitry to process radio frequency signals.
  • modules e.g., procedures, functions, and so on
  • the modules can be stored in the memory 12 or 22 and executed by the processor 11 or 21.
  • the memory 12 or 22 can be implemented within the processor 11 or 21 or external to the processor 11 or 21 in which case those can be communicatively coupled to the processor 11 or 21 via various means as is known in the art.
  • the processor 11 is configured to perform a registration update to the network 20 and revert back to one or more original UE S1 capabilities and/or one or more original UE Internet of Things (IoT) capabilities informing the network 20 of an actual support of a UE S1 mode and/or a UE IoT.
  • IoT Internet of Things
  • the processor 11 upon change of tracking area (TA) to a TA that is not in a tracking area identity (TAI) list, the processor 11 performs the registration update to the network 20 and reverts back to the one or more original UE IoT capabilities.
  • one or more the UE IoT capabilities comprise one or more UE narrow band IoT (NB-IoT) capabilities and/or one or more UE cellular IoT (CIoT) capabilities.
  • NB-IoT UE narrow band IoT
  • CCIoT UE cellular IoT
  • the processor 11 at a periodic registration update, the processor 11 reverts back to one or more IoT capability indications.
  • the processor 11 allows an implementation specific time or a timer and when after expiry of the implementation specific time or the timer, the processor 11 reverts and re-informs the network of one or more UE NB-IoT capabilities of and/or a UE capability to function in an evolved packet system (EPS) and/or an evolved packet core (EPC) .
  • the processor 11 is configured to keep a specified counter with a specified value to track a number of redirection failures. In some embodiments, before a count associated with the number of redirection failures is reached, a command from a fifth generation core (5GC) to redirect to an EPC can be successful.
  • 5GC fifth generation core
  • one or more methods of avoiding redirection failure from a fifth generation core (5GC) to an EPC can be applied.
  • avoid redirections upon reaching the count, avoid redirections by means disclosed before or herein or in the prior arts.
  • a new parameter sent by the transceiver 13 to the network 20 indicating a redirection failure is introduced, the network 20 then keeps a specified counter with a specified value.
  • the network 20 then keeps a specified counter with a specified value.
  • redirecting the UE 10 to the EPC is stopped and the UE 10 is allowed to stay where it is for services.
  • a registration type is expanded to include a reason for registration is because of failure to complete redirection.
  • expanding a registration type is performed by expanding on an existing information element (IE) .
  • the existing IE comprises a 5G system (5GS) registration type IE.
  • the processor 11 is configured to select a public land mobile network (PLMN) .
  • PLMN public land mobile network
  • selecting the PLMN is performed by choosing the next highest priority order of PLMN in an operator controlled PLMN selector with access technology list or a user controlled PLMN selector with access technology list.
  • FIG. 6 illustrates a method 200 for improving repeated redirection failures of a UE according to an embodiment of the present disclosure.
  • the method 200 includes: a block 202, performing a registration update to a network, and a block 204, reverting back to one or more original UE S1 capabilities and/or one or more original UE Internet of Things (IoT) capabilities informing the network of an actual support of a UE S1 mode and/or a UE IoT.
  • IoT Internet of Things
  • the UE upon change of tracking area (TA) to a TA that is not in a tracking area identity (TAI) list, the UE performs the registration update to the network and reverts back to the one or more original UE IoT capabilities.
  • one or more the UE IoT capabilities comprise one or more UE narrow band IoT (NB-IoT) capabilities and/or one or more UE cellular IoT (CIoT) capabilities.
  • NB-IoT UE narrow band IoT
  • CCIoT UE cellular IoT
  • the UE at a periodic registration update, the UE reverts back to one or more IoT capability indications.
  • the method further comprises allowing an implementation specific time or a timer and when after expiry of the implementation specific time or the timer, the UE reverts and re-informs the network of one or more UE NB-IoT capabilities of and/or a UE capability to function in an evolved packet system (EPS) and/or an evolved packet core (EPC) .
  • the method further comprises the UE keeping a specified counter with a specified value to track a number of redirection failures.
  • a command from a fifth generation core (5GC) to redirect to an EPC can be successful.
  • one or more methods of avoiding redirection failure can be applied.
  • avoid redirections by means disclosed before or herein.
  • the method further comprises introducing a new parameter sent by the UE to the network indicating a redirection failure, the network then keeping a specified counter with a specified value.
  • the method comprises stopping redirecting the UE to the EPC and allowing the UE to stay where it is for services.
  • the method further comprises expanding a registration type to include a reason for registration is because of failure to complete redirection.
  • expanding a registration type is performed by expanding on an existing information element (IE) .
  • the existing IE comprises a 5G system (5GS) registration type IE.
  • the method further comprises selecting a public land mobile network (PLMN) .
  • PLMN public land mobile network
  • selecting the PLMN is performed by choosing the next highest priority order of PLMN in an operator controlled PLMN selector with access technology list or a user controlled PLMN selector with access technology list.
  • Some embodiments of the present disclosure do not seek to counter the methods, solutions and embodiments in the above current technical solution.
  • the present disclosure by its proposed methods, solutions, and embodiments seeks to provide enhancements to address the additional issues described above that comes when applying the methods, solutions, and embodiments in the above current technical solution.
  • the UE Upon change of TA to a TA that is not in its TAI list, the UE has to do a registration update to the network. At this point in time seeing that the UE has moved from the registration area (s) and surrounding radio environment has changed. In this new physical area, the conditions leading to the previous redirection failure could have changed. Thus, some embodiments propose the UE reverts back to its original S1 capabilities and/or its original IoT capabilities informing the network/PLMN of its actual support of S1 mode and/or IoT (be NB-IoT or CIoT or both or other forms of IoT) .
  • the UE will revert to the IoT capability indications. While the time between the last registration update or registration request are unlikely to be weeks (although length of the periodic registration timer being set to days do happen even if uncommon) that time can commonly be in tens of minutes or even hours. In that time the conditions leading to the previous redirection failure could have changed. Thus, some embodiments propose that the UE reverts back to its original S1 capabilities and/or its original IoT capabilities informing the network/PLMN of its actual support of S1 mode and/or IoT (be it NB-IoT or CIoT or both or other forms of IoT) .
  • the UE keeps a specified counter (or even implementation specific counter) with a specified value (or with an implementation specific value) to track the number of redirection failures. Upon reaching that count, the UE knows to avoid further ping-pong and adopt the solutions set out in the prior arts.
  • This method of some embodiments of the present disclosure is different from those in the prior arts in that it allows the defensive move of mitigating the ping-pong only after the set condition is reached which can be that before the condition is reached the command from the 5GC to redirect to EPC might be successful.
  • the network then keeps a specified counter (or even implementation specific counter) with a specified value (or with an implementation specific value) .
  • the method stops redirecting the UE to EPC and allows the UE to stay where it is for services.
  • the current technical solution identifies the issue of ping-pong between PLMNs when a IoT UE is redirected by the 5GC to EPC but fails in that redirection and having to return back to the PLMN it is told to redirect out of, to be then is commanded to redirect to EPC again.
  • This ping-pong problem is acknowledged by the current technical solution, no progress to resolve that issue was made because delegates considered that what was proposed while accepting it will stop the ping-pong, have in them some shortfalls in that switching off –or indicated that the UE has no –IoT capabilities or that it cannot work in EPC could themselves stop the IoT UE getting IoT services as well.
  • Some embodiments of the present disclosure are used by 5G-NR chipset vendors, V2X communication system development vendors, automakers including cars, trains, trucks, buses, bicycles, moto-bikes, helmets, and etc., drones (unmanned aerial vehicles) , smartphone makers, communication devices for public safety use, AR/VR device maker for example gaming, conference/seminar, education purposes.
  • Some embodiments of the present disclosure are a combination of “techniques/processes” that can be adopted in 3GPP specification to create an end product.
  • FIG. 7 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present disclosure. Embodiments described herein may be implemented into the system using any suitably configured hardware and/or software.
  • FIG. 7 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory/storage 740, a display 750, a camera 760, a sensor 770, and an input/output (I/O) interface 780, coupled with each other at least as illustrated.
  • RF radio frequency
  • the application circuitry 730 may include a circuitry, such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include any combinations of general-purpose processors and dedicated processors, such as graphics processors and application processors.
  • the processors may be coupled with the memory/storage and configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems running on the system.
  • the baseband circuitry 720 may include a circuitry, such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include a baseband processor.
  • the baseband circuitry may handle various radio control functions that enable communication with one or more radio networks via the RF circuitry.
  • the radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc.
  • the baseband circuitry may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN) , a wireless local area network (WLAN) , a wireless personal area network (WPAN) .
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • multi-mode baseband circuitry Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol.
  • the baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered as being in a baseband frequency.
  • baseband circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.
  • the RF circuitry 710 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • the RF circuitry 710 may include circuitry to operate with signals that are not strictly considered as being in a radio frequency.
  • RF circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.
  • the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to the user equipment, eNB, or gNB may be embodied in whole or in part in one or more of the RF circuitry, the baseband circuitry, and/or the application circuitry.
  • “circuitry” may refer to, be part of, or include an Application Specific Integrated Circuit (ASIC) , an electronic circuit, a processor (shared, dedicated, or group) , and/or a memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality.
  • ASIC Application Specific Integrated Circuit
  • the electronic device circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules.
  • some or all of the constituent components of the baseband circuitry, the application circuitry, and/or the memory/storage may be implemented together on a system on a chip (SOC) .
  • SOC system on a chip
  • the memory/storage 740 may be used to load and store data and/or instructions, for example, for system.
  • the memory/storage for one embodiment may include any combination of suitable volatile memory, such as dynamic random access memory (DRAM) ) , and/or non-volatile memory, such as flash memory.
  • DRAM dynamic random access memory
  • flash memory non-volatile memory
  • the I/O interface 780 may include one or more user interfaces designed to enable user interaction with the system and/or peripheral component interfaces designed to enable peripheral component interaction with the system.
  • User interfaces may include, but are not limited to a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc.
  • Peripheral component interfaces may include, but are not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power supply interface.
  • USB universal serial bus
  • the sensor 770 may include one or more sensing devices to determine environmental conditions and/or location information related to the system.
  • the sensors may include, but are not limited to, a gyro sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit.
  • the positioning unit may also be part of, or interact with, the baseband circuitry and/or RF circuitry to communicate with components of a positioning network, e.g., a global positioning system (GPS) satellite.
  • GPS global positioning system
  • the display 750 may include a display, such as a liquid crystal display and a touch screen display.
  • the system 700 may be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, etc.
  • system may have more or less components, and/or different architectures.
  • methods described herein may be implemented as a computer program.
  • the computer program may be stored on a storage medium, such as a non-transitory storage medium.
  • the units as separating components for explanation are or are not physically separated.
  • the units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments.
  • each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units. If the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product. Or, one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product.
  • the software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure.
  • the storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

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

Abstract

L'invention concerne un équipement utilisateur (UE) et un procédé d'amélioration des défaillances de redirection répétées. Le procédé consiste à effectuer une mise à jour d'enregistrement sur un réseau et à revenir à une ou plusieurs capacités S1 d'UE d'origine et/ou à une ou plusieurs capacités d'Internet des Objets (IdO) d'UE d'origine informant le réseau d'un support réel d'un mode S1 d'UE et/ou d'IdO d'UE. Ceci permet de résoudre les problèmes de l'état de la technique, de fournir des améliorations pour atténuer des défaillances de redirection répétées, d'éviter un effet ping-pong, de fournir de bonnes performances de communication et/ou de fournir une fiabilité élevée.
PCT/CN2020/108198 2020-08-10 2020-08-10 Équipement utilisateur et procédé d'amélioration des défaillances de redirection répétées WO2022032432A1 (fr)

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CN105580402A (zh) * 2014-08-29 2016-05-11 华为技术有限公司 控制用户设备的e-utra能力的方法、装置及系统
CN110650499A (zh) * 2018-06-26 2020-01-03 华为技术有限公司 重定向的方法、通信系统和通信装置
US20200178061A1 (en) * 2015-06-11 2020-06-04 Intel IP Corporation Cellular iot network architecture
WO2020154736A1 (fr) * 2019-01-25 2020-07-30 Apple Inc. Procédés et systèmes de transfert de données sur un plan de commande de strate de non-accès (nas) pour l'internet des objets cellulaire (ciot) dans un système 5g (5gs)

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CN105580402A (zh) * 2014-08-29 2016-05-11 华为技术有限公司 控制用户设备的e-utra能力的方法、装置及系统
US20200178061A1 (en) * 2015-06-11 2020-06-04 Intel IP Corporation Cellular iot network architecture
CN110650499A (zh) * 2018-06-26 2020-01-03 华为技术有限公司 重定向的方法、通信系统和通信装置
WO2020154736A1 (fr) * 2019-01-25 2020-07-30 Apple Inc. Procédés et systèmes de transfert de données sur un plan de commande de strate de non-accès (nas) pour l'internet des objets cellulaire (ciot) dans un système 5g (5gs)

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