WO2018170697A1 - Dispositif et procédé d'accès au réseau - Google Patents

Dispositif et procédé d'accès au réseau Download PDF

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Publication number
WO2018170697A1
WO2018170697A1 PCT/CN2017/077372 CN2017077372W WO2018170697A1 WO 2018170697 A1 WO2018170697 A1 WO 2018170697A1 CN 2017077372 W CN2017077372 W CN 2017077372W WO 2018170697 A1 WO2018170697 A1 WO 2018170697A1
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eplmn
access technology
access
list
terminal
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PCT/CN2017/077372
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English (en)
Chinese (zh)
Inventor
阮攀
姜印清
汤超
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华为技术有限公司
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Priority to PCT/CN2017/077372 priority Critical patent/WO2018170697A1/fr
Priority to CN201780088681.3A priority patent/CN110476457A/zh
Publication of WO2018170697A1 publication Critical patent/WO2018170697A1/fr

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  • Embodiments of the present application relate to the field of communications technologies, and, more particularly, to network access technologies for communication devices.
  • PLMN Public Land Mobile Network
  • MCC Mobile Country Code
  • MNC Mobile Network Code
  • the UE When the user equipment (User Equipment, UE) is powered on, the UE selects a PLMN according to the priority order of the stored PLMN list and registers with the PLMN network. In most cases, the UE registers a Home PLMN (Home Public Land Mobile Network, HPLMN) and obtains network services under the HPLMN network. Since the coverage areas of different PLMN networks are different, the UE roams or switches to other networks during communication. With the continuous development of business cooperation between operators, the application of roaming networks has been well developed. In addition to obtaining services on the HPLMN, the UE can also obtain roaming services from networks of other operators that have signed a roaming agreement with the home network operator.
  • a Home PLMN Home Public Land Mobile Network
  • an Equivalent Public Land Mobile Network refers to a public land mobile network that is in the same position as the user terminal currently selected. Operators can configure EPLMN networks, which can share communication network resources.
  • the EPLMN included in the list of equivalent PLMNs in the UE is considered to be PLMN for PLMN selection, cell selection, cell reselection, and handover equivalent to HPLMN.
  • the list of equivalent PLMNs is downloaded and saved from the currently registered PLMN.
  • the UE updates the list of equivalent PLMNs during attach or track area update (TAU), specifically, if the UE receives a new equivalent in the Attach/TAU accept message
  • TAU track area update
  • the UE updates the list of locally saved equivalent PLMNs.
  • the EPLMN does not distinguish the access technology. For example, only a part of the EPLMN in the EPLMN list supports the LTE service, and the remaining part of the EPLMN supports the UMTS (3G) or GSM (2G) network service, and the LTE network service is not required by the operator due to the service requirement.
  • Open roaming, UMTS and GSM network services open roaming.
  • This document describes a network access method and device to enhance the endurance of an electronic device.
  • an embodiment of the present application provides a network access method.
  • the method includes: obtaining an Equivalent Public Land Mobile Network (EPLMN) list; determining whether the EPLMN in the EPLMN list supports the first access technology; and when determining that the EPLMN does not support the first access technology, blocking the adoption The first access technology accesses the EPLMN.
  • EPLMN Equivalent Public Land Mobile Network
  • the operator limits the roaming of specific communication technologies for the EPLMN.
  • the access technology is prevented or prevented from accessing the EPLMN network, and the access technology can be avoided to initiate an ATTACH registration request to the network device, thereby avoiding the registration request being rejected. network.
  • the EPLMN is accessed by using a second access technology supported by the EPLMN, and the second access technology is different from the first access technology.
  • the first access technology is an LTE access technology
  • the second access technology is a GSM or UMTS access technology.
  • the other access technologies supported by the EPLMN can still be used to access the EPLMN, so that the user can register to the roaming network and obtain the network service.
  • preventing access to the EPLMN by using the first access technology may be implemented by blocking delivery of the EPLMN to an access stratum (AS) supporting the first access technology.
  • the PLMN selection, cell selection, cell reselection or handover operation of the terminal is mainly performed in cooperation with a non-access stratum (NAS, Non-Access Stratum) and (AS, Access Stratum).
  • NAS non-access stratum
  • AS Access Stratum
  • the first access technology is a Long Term Evolution (LTE) access technology.
  • LTE Long Term Evolution
  • the terminal stores an extended EPLMN list for each EPLMN including information indicating whether the first access technology is supported by the EPLMN.
  • the stored extended EPLMN list is queried according to the identifier of the EPLMN in the EPLMN list, and it is determined according to the query result whether the EPLMN supports the first access technology.
  • the embodiment of the present application provides a terminal, which has the function of implementing the terminal in the design of the foregoing method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the structure of the terminal includes a memory and a processor.
  • the memory is configured to store program code and data that the processor performs operations.
  • the processor is configured to obtain an Equivalent Public Land Mobile Network (EPLMN) list; determine whether an EPLMN in the EPLMN list supports a first access technology; and when the EPLMN does not support the first access technology, Blocking access to the EPLMN using the first access technology.
  • EPLMN Equivalent Public Land Mobile Network
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the terminal, which includes a program designed to execute the above aspects.
  • the solution provided by the present application can improve the roaming experience of the end user.
  • FIG. 1 is a schematic diagram of a terminal roaming scenario according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a wireless network protocol stack model according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a NAS providing an EPLMN to an AS
  • FIG. 4 is a schematic diagram of a NAS providing an EPLMN to an AS according to an embodiment of the present application
  • FIG. 5 is a flowchart of a terminal performing PLMN selection, cell selection/reselection, or handover according to an embodiment of the present application
  • FIG. 6 is a block diagram showing the composition of a terminal in accordance with one embodiment of the present application.
  • a terminal may also be called a device, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile device, a remote station, a remote terminal, an access terminal, a user terminal, a communication device, a user agent, a user equipment, or a user equipment (UE).
  • the wireless terminal can be a cellular telephone, a satellite telephone, a cordless telephone, a Session Initiation Protocol (SIP) telephone, a personal digital assistant (PDA), a wirelessly connected handheld device, a computing device, or other processing device connected to a wireless modem.
  • SIP Session Initiation Protocol
  • PDA personal digital assistant
  • a base station can be utilized for communicating with wireless terminals and can also be referred to as an access point, a Node B, or some other terminology.
  • the base station can be implemented as a radio base station of any suitable radio technology, for example, GSM (Global System for Mobile Communications) BTS (Base Transceiver Station), HSPA (High Speed Packet Access) / WCDMA (Wireless Code Division Multiple Access) network NodeB, or an eNodeB of an LTE (Long Term Evolution) communication network.
  • GSM Global System for Mobile Communications
  • BTS Base Transceiver Station
  • HSPA High Speed Packet Access
  • WCDMA Wireless Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • 3GPP 3rd Generation Partnership Project
  • 5G fifth generation communication system
  • FIG. 1 depicts a scenario in which a terminal 104 moves from PLMN-1 to an area that is simultaneously covered by PLMN-2 and PLMN-3.
  • the coverage areas of PLMN-1, PLMN-2, and PLMN-3 are 101, 102, and 103, respectively.
  • communication networks can generally support different communication technologies or protocols, and a new generation of technologies can be compatible with the old generation technology.
  • the communication system PLMN-1 only supports fourth generation (LTE) wireless communication technologies or protocols.
  • PLMN-2 and PLMN-3 can support both second generation (GSM/2G), third generation (UMTS/3G) and fourth generation (LTE/4G) wireless communication technologies or protocols.
  • PLMN-1 is the network of the operator A
  • PLMN-2 is the network of the operator B
  • PLMN-3 is the network of the operator C.
  • Carrier A has only 4G networks, while Carrier B and Carrier C both have 2G/3G/4G networks.
  • Carrier A needs to sign a roaming agreement with Carrier B to use Carrier 2's 2G/3G network.
  • Carrier B prohibits 4G users of Carrier A from accessing Carrier B's 4G network.
  • Carrier C allows the 4G users of Carrier A to access the 4G network of Carrier C.
  • the terminal 104 moves from the coverage area 101 to the overlapping area of the coverage area 102 and the coverage area 103, and the equivalent PLMN list created by the mobility management entity (MME) may include PLMN-2 and PLMN-3.
  • the terminal 104 can randomly select the PLMN from the equivalent PLMN list for PLMN selection, cell selection, cell reselection, or handover, the PLMN-2 can be selected, but the PLMN-2 prohibits the operator A.
  • the user ie, terminal 104) accesses its 4G network.
  • the terminal 104 when the terminal 104 attempts to register to the PLMN-2 by using the LTE technology, since the operator A and the operator B do not sign the 4G network roaming agreement, each time the LTE network registration request is rejected by the network, the terminal 104 will drop the network.
  • the criteria used by terminal 104 to determine the appropriate cell to camp on is typically the radio condition between terminal 104 and the base station providing the cell. For example, if the terminal 104 finds itself in the coverage area of the first cell and the second cell and the radio link shared with the first cell is deteriorating, the mobile device will seek to reselect to the second cell. During the cell selection/reselection process, various messages will be exchanged between the terminal 104 and the core network. These messages include authentication, registration, and configuration messages. In Figure 1, terminal 104 moves into an area that is covered by a cell from a third network (PLMN-3).
  • PLMN-3 third network
  • the terminal 104 will be able to camp on the cell of the third network.
  • Various processes involved in cell selection and cell reselection for a general 3GPP compatible network are explained in further detail in 3GPP TS 25.304, and are not described herein again.
  • PLMN selection, cell selection, cell reselection, or handover procedure needs to consider what might be an appropriate Radio Access Technology (RAT).
  • RAT Radio Access Technology
  • PLMN selection, cell selection, cell reselection, or handover includes a radio access technology selection procedure.
  • an indicator or field may be used to indicate the radio access technology available in the EPLMN. For example, one bit can be used as a flag indicating whether the RAT is available, the indicator is set to 1 when the EPLMN supports a certain RAT, and is set to 0 when the EPLMN does not support the RAT. Of course, the indicator can consist of two or more bits. Table 1 shows an extended EPLMN list that is assigned a RAT-Supported indicator according to the operator's service provisioning policy.
  • the EPLMN and its supported RATs are listed in the extended EPLMN list in Table 1.
  • the EPLMN-1 supports three RATs, GSM, UMTS, and LTE.
  • the EPLMN-2 supports GSM and UMTS, in combination with the above description.
  • the operator of the user storing the terminal of the extended EPLMN list shown in Table 1 and the operator providing the EPLMN-2 network do not sign the 4G network roaming agreement, so the EPLMN-2 does not support the LTE RAT.
  • EPLMN-1 may be the network of the operator C
  • the EPLMN-2 may be the network of the operator B.
  • only one RAT is required to be supported in the extended EPLMN list, for example, only indicating whether the LTE RAT is supported.
  • Table 2 shows an extended EPLMN list showing that the LTE-Supported indicator is assigned according to the operator's service provisioning policy.
  • EPLMN ID RAT LTE-Supported EPLMN-1 LTE 1 EPLMN-2 LTE 0
  • the EPLMN and its support for the LTE RAT are listed in the extended EPLMN list in Table 2.
  • the EPLMN-1 LTE RAT and the EPLMN-2 do not support the LTE RAT.
  • the expansion shown in Table 2 is stored in combination with the above description.
  • the operator of the user of the terminal of the EPLMN list and the operator providing the EPLMN-2 do not sign the 4G network roaming agreement, so the EPLMN-2 cannot provide the LTE roaming service to the end user, that is, the EPLMN-2 does not support the LTE RAT.
  • Tables 1 and 2 primarily include 3GPP compatible radio access technologies, however, it should be understood that additional radio access technologies such as WLAN (e.g., WiFi), Bluetooth, WiMax, etc., may also be included.
  • the network provides the terminal with an extended EPLMN list as shown in Tables 1 and 2.
  • the network may send an extended EPLMN list to the terminal during location update, attach, routing area update, or Tracking area update (TAU).
  • TAU Tracking area update
  • the network may provide an Information Element (IE) with a list of PLMN identities of equivalent PLMNs in the Location Update Accept, Attach Accept, Routing Area Update Accept, or Tracking Area Update Accept message.
  • IE Information Element
  • the network only provides the terminal with a regular EPLMN list, and the terminal may store the following in Table 1 or in a Subscriber Identity Module (SIM), a Universal SIM (USIM), or some other non-volatile storage module.
  • SIM Subscriber Identity Module
  • USIM Universal SIM
  • a conventional EPLMN list may only contain a PLMN ID, which may include a Mobile Country Code (MCC) and a Mobile Network Code (MNC).
  • MCC Mobile Country Code
  • MNC Mobile Network Code
  • the network may provide an Information Element (IE) containing a regular EPLMN list in a Location Update Accept, Attach Accept, Routing Area Update Accept, or Tracking Area Update Accept message.
  • IE Information Element
  • the terminal After receiving the regular EPLMN list sent by the network, the terminal searches for the locally stored extended EPLMN list, and accordingly determines the RAT supported by the PLMN in the regular EPLMN list.
  • the terminal can save the extended EPLMN list by using the current network to deliver the EPLMN process without any modification on the network side, which enhances the convenience of the implementation.
  • the number of operators in the world is limited (several hundred), and the extended EPLMN list created according to the roaming agreement between these operators does not occupy a large storage space in the terminal, which is convenient for the terminal to manage.
  • EPLMN ID EPLMN-1 (MCC-1, MNC-1)
  • EPLMN-2 (MCC-2, MNC-2)
  • the following describes how the terminal performs PLMN selection, cell selection, cell reselection or handover operation using the extended EPLMN list of "radio access technology sensing".
  • PLMN selection can be divided into manual PLMN selection and automatic PLMN selection.
  • Select see the 3GPP TS 23.122 protocol for details.
  • the so-called manual PLMN selection means that the user selects the PLMN to be accessed according to the list of PLMNs displayed on the terminal, and can display according to the priority of each PLMN;
  • the so-called automatic PLMN selection means that the terminal automatically selects the PLMN to be accessed according to the priority order of the PLMN. And initiate registration.
  • the cell selection, the cell reselection, or the handover operation are described in detail in the 3GPP protocol specification, and are not described herein again.
  • the terminal wireless protocol stack model illustrates an exemplary wireless network protocol stack model of a network service over a connection-oriented transport session that includes a non-access stratum (NAS, Non-Access Stratum) over an Access Stratum (AS).
  • the wireless network protocol stack includes seven layers: an application layer, a transport layer, an Internet layer, a network layer, a link layer, and a physical layer.
  • the access layer (AS, Access Stratum) of the terminal receives the PLMN list provided by the non-access stratum (NAS, Non-Access Stratum), and starts the PLMN search process.
  • a NAS is a network layer that provides network services such as mobility management, connection management, and session management between a core network (CN) and a user equipment (UE).
  • the AS is a link layer that provides NAS with lower level services such as radio resource control, radio link control, media access control, and physical layer services.
  • the NAS layer of the GSM/UMTS/LTE-enabled multimode terminal 300 has a mobility management module 301 and an EMM (Enhanced Evolved Packet System (EPS) mobility management) module 302, and the access layer according to its support
  • the incoming technology can also be divided into a GSM access layer 303, a UMTS access layer 304, and an LTE access layer 305.
  • GSM Global System for Mobile Communications
  • UMTS UMTS access layer
  • LTE access layer 305 LTE access layer
  • Many NAS functions in the UMTS system are inherited from GSM, so the mobility management module 301 can be responsible for both GSM and UMTS mobility management.
  • the NAS layer of the terminal 300 also supports functions such as ESM (Enhanced Session Management) and SM (Session Management).
  • the PLMN selection, cell selection, cell reselection or handover operation of the terminal is mainly completed by the cooperation of the NAS and the AS.
  • the PLMN selection as an example, after the NAS layer of the terminal selects a PLMN network with the highest priority, the selected PLMN network is notified to the radio resource control module (RRC) of the access layer, and the cell camping condition is controlled by the RRC. It is determined that if the terminal can normally camp, the terminal completes the selection process of the entire PLMN, enters the normal resident state, and exits the PLMN selection process.
  • RRC radio resource control module
  • the mobility management module 301 provides the GSM access layer 303 with an EPLMN (the path indicated by arrow 306 in the figure) requesting the GSM access layer 303 to camp on the active cell.
  • the mobility management module 301 provides the EPLMN (the path indicated by arrow 307 in the figure) to the UMTS access layer 304, requesting the UMTS access layer 304 to camp on the active cell.
  • the enhanced mobility management module 302 provides the EPLMN (the path indicated by arrow 308 in the figure) to the LTE access layer 305, requesting the LTE access layer 305 to camp on the active cell. If the EPLMN does not support the LTE RAT, the registration request initiated to the LTE network is rejected by the network, and the terminal will drop the network.
  • the NAS can determine whether the EPLMN supports the first access technology (RAT). If it is determined that the EPLMN does not support the first RAT, the NAS can block The first RAT is prevented from accessing the EPLMN, so that the situation in which the first RAT registration network is rejected may be avoided.
  • RAT access technology
  • the ATM layer determines that the EPLMN does not enable the roaming service of the LTE access technology, that is, determines that the EPLMN does not support the LTE RAT, then the enhanced mobility management module 302 does not go to the LTE.
  • the access layer 305 provides the EPLMN (the path indicated by arrow 308 in the figure is broken), thereby preventing or avoiding access to the EPLMN using the LTE RAT.
  • the terminal may still access the EPLMN by using the second access technology supported by the EPLMN, and the second access technology may be a UMTS access technology or a GSM access technology, where the paths indicated by arrows 306 and 307 are still Unblocked. That is, the mobility management module 301 still provides the EPLMN (arrow 306 in the figure) to the GSM access layer 303 requesting the GSM access layer 303 to camp on the active cell. At the same time, the mobility management module 301 provides the EPLMN (arrow 307 in the figure) to the UMTS access layer 304 requesting the UMTS access layer 304 to camp on the active cell.
  • FIG. 5 is a flow diagram of a process performed by a terminal for PLMN selection, cell selection, cell reselection, or handover, in accordance with an embodiment of the present application.
  • the terminal acquires an EPLMN list.
  • a non-access stratum (NAS) acquires the EPLMN list, and the EPLMN list includes at least one piece of EPLMN information.
  • the terminal further determines that the PLMN selection, the cell selection, the cell reselection, or the handover is necessary.
  • the EPLMN list is an extended EPLMN list, and the extended EPLMN list as shown in Table 1 and Table 2 is provided by the network to the terminal.
  • the EPLMN list is a regular EPLMN list
  • the regular EPLMN list may only include a PLMN ID
  • the PLMN ID may include a Mobile Country Code (MCC) and a Mobile Network Code (MNC).
  • MCC Mobile Country Code
  • MNC Mobile Network Code
  • the terminal determines whether the EPLMN in the EPLMN list supports the first access technology (RAT).
  • RAT first access technology
  • the terminal can directly know whether the EPLMN supports the first RAT, for example, according to the RAT-Supported indicator of the extended EPLMN list shown in Table 1, whether the EPLMN supports the first RAT.
  • the terminal may store an extended EPLMN list as shown in Table 1 or Table 2 in a Subscriber Identity Module (SIM), a Universal SIM (USIM), or some other non-volatile storage module.
  • SIM Subscriber Identity Module
  • USIM Universal SIM
  • the terminal queries the stored extended EPLMN list according to the identifier of the EPLMN in the EPLMN list.
  • the example of the extended EPLMN list is shown in Table 1 or Table 2.
  • the extended EPLMN list includes, for each EPLMN, information indicating whether the first access technology is supported by the EPLMN.
  • the terminal determines, according to the query result, whether the EPLMN supports the first access technology.
  • the conventional EPLMN list obtained by the terminal is shown in Table 3.
  • the extended EPLMN list stored by the terminal is as shown in Table 2.
  • the terminal matches the EPLMN-2 in the regular EPLMN list with the EPLMN-2 in the extended EPLMN list. If successful, it can be known that EPLMN-2 does not support LTE RAT.
  • the first RAT is LTE
  • the non-access stratum determines whether the EPLMN is supported. Hold the first RAT. If it is determined that the EPLMN does not support the first RAT, the process proceeds to step 530, where access to the EPLMN with the first RAT is blocked. That is, the first RAT is temporarily disabled, and the access technology is prevented from accessing the EPLMN network, and the access technology can be avoided to initiate an ATTACH registration request to the network device, thereby avoiding the dropped network caused by the registration request being rejected.
  • the EPLMN may be blocked/not passed to an access layer (AS) supporting the first access technology to disable the first RAT.
  • AS access layer
  • the non-access stratum may not transmit the EPLMN to the LTE access stratum (AS).
  • the enhanced mobility management module 302 does not The LTE access layer 305 passes the EPLMN.
  • the terminal accesses the EPLMN by using a second access technology supported by the EPLMN, where the second access technology is different from the first access technology, for example, when the first access technology is LTE.
  • the second access technology may be an access technology of UMTS (such as WCDMA).
  • UMTS such as WCDMA
  • the mobility management module 301 can deliver the EPLMN to the GSM access layer 303 and the UMTS access layer 304 as shown in FIG.
  • the process proceeds to step 550 where the first access technology is used to access the EPLMN.
  • the non-access stratum delivers the EPLMN to an access stratum (AS) supporting the first access technology.
  • AS access stratum
  • the NAS layer delivers the EPLMN to LTE Access Layer (AS).
  • the enhanced mobility management module 302 delivers the EPLMN to the LTE access layer 305.
  • the mobility management module 301 can deliver the EPLMN to the GSM access layer 303 and the UMTS access layer 304.
  • FIG. 6 is a block diagram showing the composition of a terminal 104 in accordance with one embodiment of the present application.
  • the terminal 104 includes a radio communication unit 610, a memory 620, and a processor 630.
  • the terminal 104 may further include a display unit, an input unit, a global positioning system (GPS) unit, and the like, not shown.
  • Processor 630 can be responsible for executing various software programs (e.g., applications and operating systems) to provide computing and processing operations for terminal 104.
  • the radio communication unit 610 is responsible for the communication function of the electronic device.
  • the radio communication unit 610 establishes a communication channel with a supportable mobile communication network to implement voice telephony, video conferencing, and data communication.
  • the radio communication unit 610 includes a radio frequency (RF) transmitter and an RF receiver, wherein the RF transmitter is for upconverting and amplifying the transmission signal, and the RF receiver is for low noise amplification and down conversion of the received signal.
  • the radio communication unit 610 includes a cellular communication module (eg, a third generation (3G) cellular communication module and/or a 4G cellular communication module) and a digital broadcast module.
  • a cellular communication module eg, a third generation (3G) cellular communication module and/or a 4G cellular communication module
  • the memory 620 is configured to store various data executed and processed in the terminal 104, as well as an operating system (OS) and various applications of the electronic device.
  • the memory 620 is implemented using at least one of the following items, but is not limited thereto: RAM, ROM, flash memory, EPROM, and EEPROM.
  • the memory 620 includes a data area and a program area. The data area of the memory 620 stores data generated by the terminal 104 and downloaded from the outside.
  • the processor 630 controls the terminal 104 to perform processes such as PLMN selection, cell selection, cell reselection, or handover according to one of the above embodiments.
  • the processor 630 can execute the method flow as shown in FIG. 5 to perform The process of PLMN selection, cell selection, cell reselection or handover.
  • the radio communication unit 610 transmits and receives signals required to perform one of the above embodiments.
  • the above processor for performing the embodiments of the present application may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a transistor logic device. , hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the user equipment.
  • the processor and the storage medium may also reside as discrete components in the user equipment.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

La présente invention se rapporte au domaine technique des communications, et concerne en particulier une technologie de sélection de réseau d'un terminal. Un procédé de sélection de réseau du terminal consiste à : obtenir une liste de réseaux mobiles terrestres publics équivalents (EPLMN) ; déterminer si un EPLMN dans la liste EPLMN prend en charge une première technologie d'accès ou non ; et s'il est déterminé que l'EPLMN ne prend pas en charge la première technologie d'accès, à empêcher l'utilisation de la première technologie d'accès pour accéder à l'EPLMN.
PCT/CN2017/077372 2017-03-20 2017-03-20 Dispositif et procédé d'accès au réseau WO2018170697A1 (fr)

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CN201780088681.3A CN110476457A (zh) 2017-03-20 2017-03-20 一种网络接入方法及设备

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