US20200059832A1 - Information processing method and device - Google Patents

Information processing method and device Download PDF

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Publication number
US20200059832A1
US20200059832A1 US16/610,255 US201816610255A US2020059832A1 US 20200059832 A1 US20200059832 A1 US 20200059832A1 US 201816610255 A US201816610255 A US 201816610255A US 2020059832 A1 US2020059832 A1 US 2020059832A1
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network
assistance information
instruction
registration mode
supported
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Inventor
Hucheng Wang
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Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Publication of US20200059832A1 publication Critical patent/US20200059832A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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 technology, in particular to an information processing method and device.
  • 5G networks need to support an interoperation with Long Term Evolution (LTE) networks.
  • LTE Long Term Evolution
  • 5GC 5G Core Network
  • EPC Evolved Packet Core
  • the terminal capability does not match the network capability. That is, the terminal supports merely the single registration mode, and the network does not support the Nx interface. In this case, when the UE moves between the 5G and LTE networks, the mobility management process may fail.
  • the present disclosure provides an information processing method and device to avoid the problem of mobility management failure when a terminal is moving among networks of different access technologies, thereby ensuring the communication quality.
  • the present disclosure provides an information processing method applied to a user equipment (UE) operating in a single registration mode, including: receiving assistance information from a first network; initiating an attaching or initial registration procedure according to the assistance information received from the first network when the UE is moving between the first network and a second network, the first and second networks utilizing different access technologies.
  • UE user equipment
  • the step of initiating an attaching or initial registration procedure according to the assistance information received from the first network when the UE is moving between the first network and a second network includes: determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network; initiating the attaching or initial registration procedure when accessing the second network, if the UE in single registration mode cannot be supported in the first network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; the step of determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network includes: determining whether the UE in single registration mode can be supported in the first network according to the result or indication of the registration mode negotiation.
  • the assistance information includes: neighborhood measurement information; the step of determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network includes: determining that the UE in single registration mode cannot be supported in the first network, if the neighborhood measurement information does not include information about any cell of the access technology which the second network utilizes.
  • the step of initiating an attaching or initial registration procedure according to the assistance information received from a first network when the UE is moving between the first network and a second network includes: determining whether an access to the second network is needed according to the assistance information received from the first network; initiating the attaching or initial registration procedure when accessing the second network, if the access to the second network is needed.
  • the assistance information includes: an instruction sent by a base station in the first network through an RRC message, the instruction including: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction is sent when the first network fails to switch among different access technologies.
  • the assistance information includes: an instruction sent by a core network in the first network through an NAS message, the instruction including: an instruction of performing a reselection to the second network.
  • an embodiment of the present disclosure provides an information processing method applied to a network-side equipment of a first network, including: acquiring assistance information; sending the assistance information to a UE operating in a single registration mode, the UE initiating an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; or the assistance information includes: neighborhood measurement information; or the assistance information includes: an instruction sent by a base station in the first network through an RRC message, the instruction including: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network; or the assistance information includes: an instruction sent by a core network in the first network through an NAS message, the instruction including: an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction sent by the base station in the first network through the RRC message is sent when the first network fails to switch among different access technologies.
  • an embodiment of the present disclosure provides an information processing device applied to a user equipment (UE) operating in a single registration mode, including: a receiving module for receiving assistance information from a first network; a processing module for initiating an attaching or initial registration procedure according to the assistance information received from the first network when the UE is moving between the first network and a second network, the first and second networks utilizing different access technologies.
  • UE user equipment
  • the processing module includes: a determination sub-module for determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network; a processing sub-module for initiating the attaching or initial registration procedure when accessing the second network, if the UE in single registration mode cannot be supported in the first network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; the determination sub-module is configured to determine whether the UE in single registration mode can be supported in the first network according to the result or indication of the registration mode negotiation.
  • the assistance information includes: neighborhood measurement information; the determination sub-module is configured to determine that the UE in single registration mode cannot be supported in the first network, if the neighborhood measurement information does not include information about any cell of the access technology which the second network utilizes.
  • the processing module includes: a determination sub-module for determining whether an access to the second network is needed according to the assistance information received from the first network; a processing sub-module for initiating the attaching or initial registration procedure when accessing the second network, if the access to the second network is needed.
  • the assistance information includes: an instruction sent by a base station in the first network through an RRC message, the instruction including: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction is sent when the first network fails to switch among different access technologies.
  • the assistance information includes: an instruction sent by a core network in the first network through an NAS message, the instruction including: an instruction of performing a reselection to the second network.
  • an embodiment of the present disclosure provides an information processing device applied to a network-side equipment of a first network, including: an acquisition module for acquiring assistance information; a sending module for sending the assistance information to a UE operating in a single registration mode, the UE initiating an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; or
  • the assistance information includes: neighborhood measurement information; or the assistance information includes: an instruction sent by a base station in the first network through an RRC message, the instruction including: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network; or the assistance information includes: an instruction sent by a core network in the first network through an NAS message, the instruction including: an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction sent by the base station in the first network through the RRC message is sent when the first network fails to switch among different access technologies.
  • an embodiment of the present disclosure provides a user equipment including a processor, a storage and a transceiver, wherein, the processor is configured to read a program in the storage to execute processes as follows: receiving assistance information from a first network by the transceiver; initiating an attaching or initial registration procedure according to the assistance information received from the first network when the user equipment is moving between the first network and a second network, the first and second networks utilizing different access technologies; the transceiver is configured to receive and send data.
  • an embodiment of the present disclosure provides a network-side equipment including a processor, a storage and a transceiver, wherein, the processor is configured to read a program in the storage to execute processes as follows: receiving assistance information; sending the assistance information to a UE operating in a single registration mode by the transceiver, the UE initiating an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network; the transceiver is configured to receive and send data.
  • FIG. 1 is a schematic diagram of a network architecture model supporting an interoperation between 5G networks and LTE networks;
  • FIG. 2 is a flowchart of an information processing method according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 5 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 7 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of an information processing method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of an information processing device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of an information processing device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a network-side equipment according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of a network architecture model supporting an interoperation between 5G networks and LTE networks.
  • an Nx interface between an MME (Mobility Management Entity) and a 5G System (5GS) AMF (Access and Mobility Management Function) is optionally supported.
  • the network can support the switching between the 5G network and the LTE network.
  • the context information of a UE needs to be transmitted between the MME and the AMF, which includes the context of the mobility and the context of the session connection.
  • the UE accesses such a network supporting the Nx interface, the network may be configured in a single registration mode.
  • the network When the network does not support the Nx interface, the switching between the 5G network and the LTE network is not supported.
  • the network needs to require the terminal to perform dual registration mode, that is, to be registered to both the LTE network and the 5G network.
  • the SMF Session Management Function
  • the PDN Gate Way-Control plane PDN Gate Way-Control plane
  • the dual-registered UEs are further classified into UEs having a single radio capability and UEs having a dual radio capability.
  • a single-radio terminal can only maintain one-side session connection at the same time, that is, can only maintain the connection in the LTE network or the connection in the 5G network. In this way, if the terminal moves between the LTE network and the 5G network, packet loss will inevitably occur, and seamless service continuity cannot be guaranteed.
  • a dual-radio terminal can maintain the connections in the LTE network and the 5G network at the same time. Therefore, when it moves between the networks, the connection can be switched in the make-before-break manner, that is, while receiving data from the network to which is switched, data is also received from the previous network, so that the connection of the services can be guaranteed.
  • the UE When a UE supporting the single registration mode is in an idle state, if an E-UTRAN access is selected, the UE will perform a TAU process. However, if the Nx interface is not supported in the 5GC network and the EPC network, the TAU process of the UE will be rejected, which will cause the UE to perform cell reselection or re-initiate an attaching process, thereby adding additional signaling overhead, delaying the acquisition of network services of the UE, particularly when the UE performs a ping-pong movement between the 5GS network and the EPS network. For the connected UE that supports the single registration mode, it is not yet discussed how to deal with the situation where an Nx interface between the 5GC network and the EPC network is not supported, and a problem of mobility management failure may also occur.
  • some embodiments of the present disclosure provide an information processing method and device to avoid the problem of mobility management failure when a terminal is moving among networks of different access technologies, thereby ensuring the communication quality.
  • an information processing method is applied to a user equipment (UE) operating in a single registration mode.
  • the method includes: Step 201 , receiving assistance information from a first network; Step 202 , initiating an attaching or initial registration procedure according to the assistance information received from the first network when the UE is moving between the first network and a second network, the first and second networks utilizing different access technologies.
  • the initial registration procedure refers to a registration procedure carrying a Subscriber Permanent Identifier (SUPI) that is initiated by a terminal.
  • SUPI Subscriber Permanent Identifier
  • the first network is the 5G network
  • the second network is the LET network.
  • the first network and the second network may also change.
  • Step 202 it is determined whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network; for example, it is determined whether the first network supports the Nx interface. If the UE in single registration mode cannot be supported in the first network, the attaching or initial registration procedure is initiated when accessing the second network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level.
  • the step of determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network may particularly be as follows: determining whether the UE in single registration mode can be supported in the first network according to the result or indication of the registration mode negotiation. If the result or indication of the registration mode negotiation indicates that UE in single registration mode can be supported, it is determined that the first network supports the UE in the single registration mode; otherwise, it is determined that the UE in single registration mode cannot be supported in the first network.
  • the assistance information includes: neighborhood measurement information.
  • the step of determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network may be: determining that the UE in single registration mode cannot be supported in the first network, if the neighborhood measurement information does not include information about any cell of the access technology which the second network utilizes.
  • Step 202 it is determined whether an access to the second network is needed according to the assistance information received from the first network; if the access to the second network is needed, the attaching or initial registration procedure is initiated when accessing the second network.
  • the assistance information includes: an instruction sent by a base station in the first network through a Radio Resource Control (RRC) message.
  • the instruction includes: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message, and the instruction is sent when the first network fails to switch among different access technologies.
  • the UE when moving between the first network and the second network, the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network, thereby avoiding a problem of mobility management failure when the UE is moving among networks of different access technologies, and ensuring the communication quality.
  • an information processing method is applied to a network-side equipment of a first network, and includes: Step 301 , acquiring assistance information; Step 302 , sending the assistance information to a UE operating in a single registration mode, the UE initiating an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; or the assistance information includes: neighborhood measurement information; or the assistance information includes: an instruction sent by a base station in the first network through an RRC message, the instruction including: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network; or the assistance information includes: an instruction sent by a core network in the first network through an NAS message, the instruction including: an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction sent by the base station in the first network through the RRC message is sent when the first network fails to switch among different access technologies.
  • the UE when moving between the first network and the second network, the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network, thereby avoiding a problem of mobility management failure when the UE is moving among networks of different access technologies, and ensuring the communication quality.
  • the embodiment of the present disclosure describes an example in which the UE performs registration mode negotiation with the 5GS and performs connection state movement to the EPS.
  • the method includes the following steps.
  • Step 401 first, registering a UE operating in a single registration mode to the 5G network and performing registration mode negotiation with the network.
  • the AMF indicates to the UE that the Nx interface is not supported, that is, the single registration mode is not supported.
  • the registration mode negotiation is an optional step. For example, the UE only supports the single registration mode, and thus the UE does not need to provide the registration mode information to the network.
  • the 5G network determines, according to its own capability, that the single registration mode cannot be supported, and indicates to the UE that the Nx interface or the single registration mode is not supported.
  • Step 402 the UE determines, according to the result or indication of the registration mode negotiation or, that the 5G network does not support the single registration mode.
  • Step 403 an NG RAN prepares to initiate a switching process.
  • the NG RAN determines that the switching to a EPS (Evolved Packet System) cannot be performed.
  • EPS Evolved Packet System
  • Step 404 the NG RAN releases the RRC connection of the UE, and sends the RRC connection release message to the UE.
  • the RRC connection release message includes: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • the UE releases the RRC connection.
  • Step 405 the UE determines, according to the instruction information received from the NG RAN, to perform an attaching process to the EPS.
  • the embodiment of the present disclosure describes an example in which the UE performs registration mode negotiation in the 5GS and performs idle state movement to the EPS.
  • the method includes: Step 501 , first, registering a UE operating in a single registration mode to the 5G network, and performing registration mode negotiation with the network. According to the result of the registration mode negotiation, the 5GS indicates to the UE that the single registration mode is not supported. Step 502 , the UE determines, according to the result or indication of the registration mode negotiation, that the 5G network does not support the single registration mode.
  • Step 503 according to the result or indication of the registration mode negotiation, performing an attaching process instead of a TAU (Tracking Area Update) process, when the UE moves into a coverage of the EPS network, and the UE sends an attach request to the EPS.
  • Step 504 the EPS sends an Attach Accept to the UE.
  • the embodiment of the present disclosure describes an example in which the UE is registered in the 5GS and performs connection state movement to the EPS.
  • the method includes: Step 601 , the UE in the connection state acquiring neighborhood measurement information from the NG RAN; Step 602 , the UE in the connection state determining, according to the neighborhood measurement information provided by the NG RAN, that the measured cell does not include any information about cells of the E-UTRA, and thus determining that the 5G network does not support an interoperation with the EPS, that is, does not support a single registration mode; Step 603 , the NG RAN abandoning switching since no suitable target cell can be found, releasing the RRC connection, and sending an RRC connection release request to the UE; Step 604 , the UE selecting an E-UTRA cell according to the RRC connection release request, and initiating an attaching process.
  • the embodiment of the present disclosure describes an example in which a UE attaches to an EPS and performs connection state movement to a 5GS.
  • the method includes: Step 701 , the UE in the connection state acquiring neighborhood measurement information from the E-UTRAN; Step 702 , the UE in the connection state determining, according to the neighborhood measurement information provided by the E-UTRAN, that the measured cell does not include any information about cells of NR, and thus determining that the LTE network does not support an interoperation with the 5GS, that is, does not support a single registration mode; Step 702 , the E-UTRAN abandoning switching since no suitable target cell can be found, releasing the RRC connection, and sending an RRC connection release request to the UE; Step 703 , the UE selecting an NR cell according to the RRC connection release request, and initiating an attaching process.
  • the embodiment of the present disclosure describes an example in which the AMF instructs a UE to perform connection state movement.
  • the scenario is as follows:
  • the NG RAN has configured information about the E-UTRA cell, but the AMF does not deploy the Nx interface.
  • the method includes: Step 801 , first, registering a UE operating in the single registration mode to the 5G network, and performing registration mode negotiation with the network. If the 5GS does not support the Nx interface, the 5GS indicates to the UE that the single registration mode is not supported.
  • Step 802 the UE determines, according to the result or indication of the registration mode negotiation, that the 5G network does not support the single registration mode.
  • Step 803 the NG RAN performs switching decision, determines to initiate a switching process, and sends a switching request message to the AMF.
  • Step 804 the AMF rejects switching since the AMF does not support the single registration mode, and sends a switching rejection message to the NG RAN.
  • Step 805 the AMF sends an RAT (Radio Access Technology) reselection instruction to the UE, wherein the instruction is sent by using the NAS message.
  • Step 806 the UE determines to perform an attaching process to the EPS according to the RAT reselection instruction as sent.
  • RAT Radio Access Technology
  • the UE determines whether to perform access to the EPS according to the RAT reselection instruction, and if necessary, initiates an attaching or initial registration procedure when accessing the EPS network.
  • the UE when moving between the first network and the second network, the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network, thereby avoiding a problem of mobility management failure when the UE is moving among networks of different access technologies, and ensuring the communication quality.
  • an information processing device is applied to a user equipment (UE) operating in a single registration mode, and includes: a receiving module 901 for receiving assistance information from a first network; a processing module 902 for initiating an attaching or initial registration procedure according to the assistance information received from the first network when the UE is moving between the first network and a second network, the first and second networks utilizing different access technologies.
  • UE user equipment
  • the processing module 902 includes: a determination sub-module for determining whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network; a processing sub-module for initiating the attaching or initial registration procedure when accessing the second network, if the UE in single registration mode cannot be supported in the first network.
  • the assistance information includes NAS level indication or registration mode negotiated on the NAS level; the determination sub-module is specifically configured to determine whether the UE in single registration mode can be supported in the first network according to the result or indication of the registration mode negotiation.
  • the assistance information includes neighborhood measurement information
  • the determination sub-module is specifically configured to determine that the UE in single registration mode cannot be supported in the first network, if the neighborhood measurement information does not include information about any cell of the access technology which the second network utilizes.
  • processing module 902 include: a determination sub-module for determining whether an access to the second network is needed according to the assistance information received from the first network; a processing sub-module for initiating the attaching or initial registration procedure when accessing the second network, if the access to the second network is needed.
  • the assistance information includes an instruction sent by a base station in the first network through an RRC message, and the instruction includes: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • RRC message is an RRC connection release message.
  • the assistance information includes an instruction sent by a core network in the first network through an NAS message, and the instruction includes: an instruction of performing a reselection to the second network.
  • the UE when moving between the first network and the second network, the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network, thereby avoiding a problem of mobility management failure when the UE is moving among networks of different access technologies, and ensuring the communication quality.
  • an information processing device is applied to a network-side equipment of a first network, and includes: an acquisition module 1001 for acquiring assistance information; and a sending module 1002 for sending the assistance information to a UE operating in a single registration mode, wherein the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network.
  • the assistance information includes NAS level indication or registration mode negotiated on the NAS level; or the assistance information includes neighborhood measurement information; or the assistance information includes an instruction sent by a base station in the first network through an RRC message, and the instruction includes: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network; or the assistance information includes an instruction sent by a core network in the first network through an NAS message, instructing to perform a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction sent by the base station in the first network through the RRC message is sent when the first network fails to switch among different access technologies.
  • the UE when moving between the first network and the second network, the UE initiates an attaching or initial registration procedure according to the assistance information received from the first network, thereby avoiding a problem of mobility management failure when the UE is moving among networks of different access technologies, and ensuring the communication quality.
  • an embodiment of the present disclosure provides a network-side equipment including a processor 1100 which is configured to read a program in a storage 1120 to execute processes as follows: acquiring assistance information; sending the assistance information to a UE operating in a single registration mode by a transceiver 1110 , the UE initiating an attaching or initial registration procedure according to the assistance information received from the first network when moving between the first network and a second network.
  • the transceiver 1100 is configured to receive and send data.
  • the bus architecture may include any number of interconnected buses and bridges, which are specifically linked by various circuits such as the processor 1100 (which is an example of the one or more processors) and the storage 1120 (which is an example of the storage).
  • the bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and is therefore omitted herein.
  • the bus interface provides an interface.
  • the transceiver 1110 may be a plurality of elements, including a transmitter and a transceiver, and providing units for communicating with various other devices over a transmission medium.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.
  • a user equipment includes: a processor 1200 which is configured to read a program in a storage 1220 to execute processes as follows: receiving assistance information from a first network by a transceiver 1210 ; initiating an attaching or initial registration procedure according to the assistance information received from the first network when the user equipment is moving between the first network and a second network, the first and second networks utilizing different access technologies; and a transceiver 1210 , which is configured to receive and send data under the control of the processor 1200 .
  • the bus architecture may include any number of interconnected buses and bridges, which are specifically linked by various circuits such as the processor 1200 (which is an example of the one or more processors) and the storage 1220 (which is an example of the storage).
  • the bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1210 may be a plurality of elements, including a transmitter and a transceiver, and providing units for communicating with various other devices over a transmission medium.
  • the user interface 1230 may also be an interface capable of connecting externally or internally the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.
  • the processor 1200 is further configured to determine whether the UE in single registration mode can be supported in the first network according to the assistance information received from the first network; and initiate the attaching or initial registration procedure when accessing the second network, if the UE in single registration mode cannot be supported in the first network.
  • the assistance information includes: NAS level indication or registration mode negotiated on the NAS level; and the processor 1200 is further configured to determine whether the UE in single registration mode can be supported in the first network according to the result or indication of the registration mode negotiation.
  • the assistance information includes neighborhood measurement information; and the processor 1200 is further configured to determine that the UE in single registration mode cannot be supported in the first network, if the neighborhood measurement information does not include information about any cell of the access technology which the second network utilizes.
  • the processor 1200 is further configured to determine whether an access to the second network is needed according to the assistance information received from the first network; and initiate the attaching or initial registration procedure when accessing the second network, if the access to the second network is needed.
  • the assistance information includes an instruction sent by a base station in the first network through an RRC message, and the instruction includes: information about cells of the second network; or an indication that switching among different access technologies is not supported; or an instruction of performing a reselection to the second network.
  • the RRC message is an RRC connection release message.
  • the instruction is sent when the first network fails to switch among different access technologies.
  • the assistance information includes an instruction sent by a core network in the first network through an NAS message, instructing to perform a reselection to the second network.
  • the present disclosure further provides a computer-readable storage medium for storing a computer program which is executable by a processor to perform the information processing method according to any of the above embodiments.
  • the disclosed methods and devices can be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical functional division. In practical applications, there may be other division manners; for example, multiple units or components may be combined or may be integrated into another system, or some features may be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
  • the functional units in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware and software.
  • the above integrated unit implemented in the form of a software functional unit may be stored in a computer-readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
  • the foregoing storage medium includes various medium capable of storing program codes, such as a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.

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CN108811006B (zh) 2022-01-07
EP3621349A1 (en) 2020-03-11
KR20190140050A (ko) 2019-12-18
TWI791016B (zh) 2023-02-01
EP3621349A4 (en) 2020-05-06
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JP2020519179A (ja) 2020-06-25
US20230013493A1 (en) 2023-01-19

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