WO2020030146A1 - 网络接入方法、装置、网络设备和计算机可读存储介质 - Google Patents

网络接入方法、装置、网络设备和计算机可读存储介质 Download PDF

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Publication number
WO2020030146A1
WO2020030146A1 PCT/CN2019/100072 CN2019100072W WO2020030146A1 WO 2020030146 A1 WO2020030146 A1 WO 2020030146A1 CN 2019100072 W CN2019100072 W CN 2019100072W WO 2020030146 A1 WO2020030146 A1 WO 2020030146A1
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WIPO (PCT)
Prior art keywords
iab
access
iab node
information
cell
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Ceased
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PCT/CN2019/100072
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English (en)
French (fr)
Inventor
黄莹
陈琳
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ZTE Corp
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ZTE Corp
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Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to EP19846731.8A priority Critical patent/EP3836743B1/en
Priority to ES19846731T priority patent/ES3047632T3/es
Priority to US17/266,343 priority patent/US11622320B2/en
Priority to KR1020217003564A priority patent/KR102828989B1/ko
Priority to DK19846731.8T priority patent/DK3836743T3/da
Publication of WO2020030146A1 publication Critical patent/WO2020030146A1/zh
Anticipated expiration legal-status Critical
Priority to US18/115,276 priority patent/US12150041B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • 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
    • H04W88/08—Access point devices
    • 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
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • Embodiments of the present invention relate to, but are not limited to, the field of network communications, and in particular, to but not limited to a network access method, apparatus, network device, and computer-readable storage medium.
  • NR New Radio
  • massive MIMO Multiple-Input, Multiple-Output, Multiple Input, Multiple Output
  • multi-beam The use of beams makes research and application of integrated access and backhaul links (IABs) possible.
  • IABs integrated access and backhaul links
  • An access node that supports user equipment (User Equipment) wireless access and wirelessly transmits user plane or control plane data packets is called an IAB node.
  • An access node that provides a wireless backhaul function for the IAB node, so that the UE that accesses the IAB node accesses the core network is called an IAB host.
  • the IAB node can access another IAB node (also referred to as a parent IAB node) or an IAB donor through an air interface.
  • the access nodes can transmit user plane or control plane data packets through a wireless backhaul link. Access link and backhaul link can use the same or different carrier frequencies. User plane or control plane data packets can be transmitted through a multi-hop relay backhaul link between the access node and the core network element.
  • the IAB access method in the IAB architecture is lacking, and the successful transmission of data packets cannot be guaranteed.
  • the network access method, device, network device, and computer-readable storage medium provided by the embodiments of the present invention mainly solve technical problems related to IAB access problems in the IAB architecture in related technologies.
  • An embodiment of the present invention provides a network access method, including:
  • the current self-access and backhaul IAB node obtains cell access related information from the superior IAB node;
  • the current IAB node determines a candidate cell and / or performs an access attempt according to the cell access related information.
  • An embodiment of the present invention further provides a network access device, including:
  • An information acquisition module configured to acquire cell access related information from a superior IAB node
  • a network access module is configured to determine a candidate cell and / or perform an access attempt according to the cell access related information.
  • An embodiment of the present invention further provides a network device.
  • the network device includes a processor, a memory, and a communication bus.
  • the communication bus is used to implement connection and communication between the processor and the memory
  • the processor is configured to execute one or more computer programs stored in the memory to implement the steps of the foregoing network access method.
  • An embodiment of the present invention further provides a computer storage medium.
  • the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the foregoing network access method. .
  • the current IAB node obtains cell access related information from the superior IAB node through the current self-access and return IAB node; the current IAB node is based on the cell Access related information, determine candidate cells and / or perform access attempts. As a result, IAB node access is achieved through cell access related information, and successful data packet transmission is achieved.
  • FIG. 1 is a schematic diagram of an IAB scenario in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an IAB scenario in an embodiment of the present invention.
  • FIG. 3 is a flowchart of a network access method in the first embodiment of the present application.
  • FIG. 4 is a schematic diagram of IAB access in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a composition of a network access device in a seventh embodiment of the present application.
  • FIG. 6 is a schematic diagram of a network device composition in an eighth embodiment of the present application.
  • the uplink data packet of the UE can be sent to the IAB donor through two IAB nodes, and then sent to the 5G core network (NGC).
  • NGC 5G core network
  • CU / DU supporting centralized unit / distributed unit
  • gNB next-generation Node B
  • Figure 2 shows the schematic diagram of supporting IAB in the CU / DU separation deployment scenario.
  • the CU can also be composed of control plane (also called CU-CP) and user plane (also called CU-UP) logical functions.
  • the network access method includes:
  • the current self-access and backhaul IAB node obtains cell access related information from a superior IAB node.
  • the current IAB node determines a candidate cell and / or executes an access attempt according to the cell access related information.
  • the candidate cell is determined, that is, whether the corresponding cell is selected as a candidate cell according to the cell access related information; and the execution of the access attempt is determined based on the cell access related information. Whether an access attempt needs to be performed.
  • the cell access related information may include at least one of the following: indication information of whether the cell is barred; indication information of whether the cell is reserved; reserved indication information of the cell for the IAB; allowed IAB access indication information; access control information.
  • the access control information includes access categories and / or access identifiers corresponding to access categories and access identifiers.
  • the superior IAB node may include a parent IAB node, or an IAB host IAB donor.
  • the current IAB node obtaining the cell access related information from the superior IAB node includes: the current IAB node obtains the cell access relevant information from the superior IAB node through a system message.
  • determining, by the current IAB node, the candidate cell and / or performing an access attempt according to the cell access related information includes: the current IAB node determines whether to connect the cell corresponding to the cell access related information according to at least one of the following information: As a candidate cell, or whether to perform an access attempt: access identification, access category, and cell access-related information.
  • the method before the IAB node determines whether to use a cell corresponding to the cell access related information as a candidate cell or whether to perform an access attempt, the method further includes: the current IAB node determines according to the pre-configured information and / or pre-defined rules. Access identification and / or access category.
  • the method may further include: the current IAB node sends auxiliary information to a superior IAB node.
  • the auxiliary information includes at least one of the following: IAB node indication information; IAB related connection establishment cause value; mobile terminal part MT (Mobile Termination) part identifier; distributed unit part DU (distributed unit unit) part identifier; Dedicated Core Networks (IDN) ID for IAB; Single Network Slice Selection Assistant Information (S-NSSAI) for IAB; Slice / Service Type SST (Slice) for IAB / Service Type); Slice Differentiator SD (Slice Differentializer) for IAB; S-NSSAI information supported by IAB nodes; Slice / Service Type information supported by IAB nodes; DCN ID information supported by IAB nodes; indication of whether IAB is supported information.
  • the current IAB node sending auxiliary information to the superior IAB node may include: the current IAB node sends auxiliary information to the superior IAB node through at least one of the following messages: radio resource control RRC message, F1 message, X2 message, and Xn message .
  • the method may further include: the current IAB node receives the IAB capability related information of the superior IAB node or the core network element from the superior IAB node or the core network element.
  • the core network element may include a mobility management entity MME or an access and mobility management function AMF.
  • the current IAB node before or after the current IAB node receives the IAB capability related information of the core network element from the core network element, it may further include: the current IAB node sends the IAB capability related information to the core network element.
  • the IAB capability related information includes at least one of the following: supported S-NSSAI information; supported slice / service type information; supported DCN ID information; and indication information of whether or not the IAB is supported.
  • the IAB node may have a gNB-DU function
  • the IAB donor may have an IAB donor DU and / or an IAB donor CU function.
  • This embodiment provides a network access method, which obtains cell access related information from a superior IAB node through a current self-access and return IAB node; the current IAB node determines a candidate cell based on the cell access related information. And / or perform an access attempt. As a result, IAB node access is achieved through cell access related information, and successful data packet transmission is achieved.
  • This embodiment is a manner of accessing an IAB node or an IAB donor.
  • the scenario diagram of this embodiment is shown in FIG. 4.
  • the UE accesses the network through evolved-terrestrial radio access-new radio dual-connectivity (EN-DC), and IAB node1 and IAB node2. Access the network through Standalone (SA).
  • SA Standalone
  • a CU / DU separation scenario is taken as an example.
  • This embodiment is also applicable to a non-CU / DU separation scenario, so the IAB node and / or IAB donor has gNB function.
  • the system message of the IAB node or the IAB donor includes information related to cell access.
  • the system message may be a master information block (Master Information Block, MIB), a system information block (System Information Block, SIB) 1, or other system messages.
  • the cell access related information includes at least one of the following: indication information of whether the cell is barred; indication information of whether the cell is reserved; indication information of the cell used for the IAB; reservation of the indication that the IAB is allowed to be accessed information.
  • the MT After receiving the system message of IAB node or IAB from the UE or IAB node, the MT determines whether the cell can be used as a candidate cell in the cell selection / reselection process based on the cell access related information contained in the system message, or whether Perform an access attempt (or perform a Radio Resource Control (Radio Resource Control, RRC) connection establishment process). For example, if the system message contains one of the following information, the UE determines not to use the cell as a candidate cell or to perform an access attempt. In the case that the system message does not include the following information, the IAB determines that the cell can be used as a candidate cell. Or perform an access attempt:
  • Radio Resource Control Radio Resource Control
  • the IAB node MT determines to perform an access attempt, the IAB node MT indicates that it is an IAB node in a message sent to the base station (parent IAB node or IAB donor) during the RRC connection establishment process, or indicates that the connection establishment cause value is IAB-related, for example, a request message for establishing an RRC connection may be used. It should be noted that this embodiment is also applicable to a case where the IAB node accesses through a Non-Standalone (NSA) method.
  • NSA Non-Standalone
  • This embodiment is a manner of accessing an IAB node or an IAB donor. Please refer to FIG. 4 for the scenario diagram of this embodiment.
  • the UE accesses the network through the EN-DC mode, and the IAB node 1 and the IAB node 2 access the network through the SA mode.
  • a CU / DU separation scenario is taken as an example.
  • This embodiment is also applicable to a non-CU / DU separation scenario, so the IAB node and / or IAB donor has gNB function.
  • the IAB node MT is configured as an access identity corresponding to the IAB; and / or, an access category corresponding to the IAB is defined, and the IAB node determines the access category corresponding to the IAB before the MT initiates an access attempt.
  • the system message e.g., SIB1
  • received by the UE from the IAB node or IAB donor includes access control information (also called barring control information or access control information), and the access control information includes Access Categories and Access corresponding to Identity Access control parameters.
  • the UE determines the corresponding access control parameters according to the access control information obtained from the system message and the Access Categorie and Access Identity corresponding to this access attempt, and determines whether to use the cell as a candidate cell or whether to execute it according to the control parameter. Access attempt.
  • the message sent by the IAB node MT to the base station (parent IAB node or IAB donor) during the RRC connection establishment process includes the IAB node instruction information, or the value indicating the connection establishment reason is IAB-related, for example, a request message for establishing an RRC connection may be used. It should be noted that this method is also applicable to the case where the IAB node accesses via NSA.
  • This embodiment is a manner of accessing an IAB node or an IAB donor.
  • the core network accessed by the IAB node is 5GC.
  • a dedicated functional entity or network or network slice is defined for the IAB, and an SST (Slice / Service Type) value and / or an SD (Slice / Differentiator) value corresponding to the network slice for the IAB is defined.
  • the IAB node obtains the S-NSSAI for the IAB, which includes the SST (Slice / Service Type) value, and / or the SD (Slice / Differentiator) value; or, the IAB node obtains the corresponding temporary identifier (Temp ID), which is included in the Temp ID Corresponding core network identification information (CN identity information), such as AMF identification information; IAB node MT establishes an RRC connection (or Attach, or Tracking Area Update (TAU) or Routing Area Update (RAU) In the process), the Temp ID and / or S-NSSAI information is sent to the parent IAB node or IAB donor.
  • SST Selice / Service Type
  • SD Selice / Differentiator
  • Temp ID temporary identifier
  • CN identity information such as AMF identification information
  • IAB node MT establishes an RRC connection (or Attach, or Tracking Area Update (TAU) or Routing Area Update (RAU) In the process), the Temp ID
  • the message sent by the IAB node to the base station (parent IAB node or IAB donor) during the RRC connection establishment process (or Attach, or TAU or RAU process) includes the IAB node instruction information, or the connection establishment cause value is IAB related.
  • the parent IAB node or IAB donor selects network elements that support IAB for the IAB node based on the Temp ID and / or S-NSSAI information, or the IAB node indication information, or selects the AMF that supports the requested slice for the IAB node, or, Select the AMF according to the CN identity in the Temp ID, or select the default AMF.
  • the IAB node and the AMF exchange their supported S-NSSAI or Slice / Service types or whether they support IAB; or, the IAB donor and the AMF exchange their supported S-NSSAI or Slice / Service types or whether they support IAB.
  • the AMF includes a network slice for the IAB in the initial context establishment request message sent to the IAB node or the IAB donor or the protocol data unit (Protocol Data Unit (PDU) session establishment / modification / release request message)
  • the corresponding S-NSSAI includes SST (Slice / Service Type) value and / or SD (Slice / Differentiator) value.
  • This embodiment is a manner of accessing an IAB node or an IAB donor.
  • the core network accessed by the IAB node is 5GC.
  • a dedicated functional entity or network is defined for the IAB, and a DCN ID corresponding to the dedicated network Dedicated Core Networks (DCN) for the IAB is defined.
  • the IAB node obtains the DCN ID for the IAB.
  • the IAB node MT sends the DCN ID to the parent IAB node or IAB donor during the RRC connection establishment process (or Attach, or TAU or RAU process).
  • the message sent by the IAB node MT to the base station (parent IAB node or IAB donor) during the RRC connection establishment process includes the IAB node instruction information, or indicates that the connection establishment cause value is IAB related.
  • the parent IAB node or IAB donor selects network elements (such as MME) that support IAB for the IAB node based on the DCN ID or the IAB node instruction information.
  • the IAB node and the MME exchange the DCN ID they support or whether they support IAB through the S1 interface; or, the IAB donor and the MME exchange the DCN ID they support or support IAB through the S1 interface.
  • This embodiment is a manner of accessing an IAB node or an IAB donor.
  • the IAB node accesses the network through the NSA or SA mode.
  • the IAB node sends its MT part identity and / or DU part identity to the parent IAB node or IAB donor through an RRC message (for example, an RRC connection establishment message).
  • the IAB node sends its MT part ID and / or DU part ID to the IAB donor through an F1 message (for example, an F1 setup request (F1 setup request) message).
  • the MT part identifier is used to identify the MT part of the mobile terminal of the IAB node, and may specifically include one of the following: a Cell-Radio Network Temporary Identifier (C-RNTI) and a node or cell identifier to which the C-RNTI is assigned.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the DU part identifier is used to identify the DU, CU, or base station of the IAB node, and may specifically include one of the following: DU identifier, CU identifier, base station identifier, cell identifier, PCI, IP address, and other identifiers used to identify the DU part of the IAB node.
  • logo used to identify the DU part of the IAB node.
  • the IAB donor After the IAB donor receives, it saves and maintains the IAB node ID and the DU part identity, or the corresponding relationship between the two.
  • the network access device includes: a data determining module 51 for obtaining cell access related information from a superior IAB node; and a network access module 52 for According to the cell access related information, a candidate cell is determined and / or an access attempt is performed.
  • the cell access related information may include at least one of the following: indication information of whether the cell is barred; indication information of whether the cell is reserved; reserved indication information of the cell for the IAB; allowed IAB access indication information; access control information.
  • the access control information includes access categories and / or access identifiers corresponding to access categories and access identifiers.
  • the superior IAB node may include a parent IAB node, or an IAB host IAB donor.
  • the current IAB node obtaining the cell access related information from the superior IAB node includes: the current IAB node obtains the cell access relevant information from the superior IAB node through a system message.
  • determining, by the current IAB node, the candidate cell and / or performing an access attempt according to the cell access related information includes: the current IAB node determines whether to connect the cell corresponding to the cell access related information according to at least one of the following information: As a candidate cell, or whether to perform an access attempt: access identification, access category, and cell access-related information.
  • the method before the IAB node determines whether to use a cell corresponding to the cell access related information as a candidate cell or whether to perform an access attempt, the method further includes: the current IAB node determines the access according to the pre-configured information and / or pre-defined rules. Access identification and / or access category.
  • the method may further include: the current IAB node sends auxiliary information to a superior IAB node.
  • the auxiliary information includes at least one of the following: IAB node indication information; IAB related connection establishment cause value; mobile terminal part MT (Mobile Termination) part identifier; distributed unit part DU (distributed unit unit) part identifier; Dedicated Core Networks (IDN) ID for IAB; S-NSSAI for IAB; Slice / Service Type (SST) for IAB; Slice Differentiator SD (Slice for IAB) Differentiator); S-NSSAI information supported by the IAB node; Slice / Service Type information supported by the IAB node; DCN ID information supported by the IAB node; indication information of whether the IAB is supported.
  • IAB node indication information IAB node indication information
  • IAB related connection establishment cause value mobile terminal part MT (Mobile Termination) part identifier
  • distributed unit part DU distributed unit part identifier
  • IDN Dedicated Core Networks
  • S-NSSAI for IAB
  • SST Service Type
  • SST Slice Differentiator SD (Slice for IAB
  • the current IAB node sending auxiliary information to the superior IAB node may include: the current IAB node sends auxiliary information to the superior IAB node through at least one of the following messages: radio resource control RRC message, F1 message, X2 message, and Xn message .
  • the method may further include: the current IAB node receives the IAB capability related information of the superior IAB node or the core network element from the superior IAB node or the core network element.
  • the core network element may include a mobility management entity MME or an access and mobility management function AMF.
  • the current IAB node before or after the current IAB node receives the IAB capability related information of the core network element from the core network element, it may further include: the current IAB node sends the IAB capability related information to the core network element.
  • the IAB capability related information includes at least one of the following: supported S-NSSAI information; supported slice / service type information; supported DCN ID information; and indication information of whether or not the IAB is supported.
  • the IAB node may have a gNB-DU function
  • the IAB donor may have an IAB donor DU and / or an IAB donor CU function.
  • This embodiment provides a network access device that obtains cell access related information from a superior IAB node through a current self-access and return IAB node; the current IAB node determines a candidate cell based on the cell access related information. And / or perform an access attempt. As a result, IAB node access is achieved through cell access related information, and successful data packet transmission is achieved.
  • This embodiment also provides a network device. As shown in FIG. 6, it includes a processor 61, a memory 62, and a communication bus 63, where the communication bus 63 is used to implement connection and communication between the processor 61 and the memory 62;
  • the processor 61 is configured to execute one or more computer programs stored in the memory 62 to implement the steps of the network access method in the foregoing embodiments, and details are not described herein again.
  • This embodiment also provides a computer-readable storage medium that is implemented in any method or technology for storing information, such as computer-readable instructions, data structures, computer program modules, or other data. Volatile or non-volatile, removable or non-removable media.
  • Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory, Read-Only Memory), EEPROM (Electrically Erasable, Programmable, Read-only Memory) ), Flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic box, magnetic tape, disk storage or other magnetic storage devices, Or any other medium that can be used to store desired information and can be accessed by a computer.
  • RAM Random Access Memory
  • ROM Read-Only Memory
  • EEPROM Electrically Erasable, Programmable, Read-only Memory
  • Flash memory or other memory technology
  • CD-ROM Compact Disc Read-Only Memory
  • DVD digital versatile disk
  • the computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the stored one or more computer programs may be executed by a processor to implement at least one of the network access methods in the foregoing embodiments. step.
  • This embodiment also provides a computer program (also referred to as computer software).
  • the computer program may be distributed on a computer-readable medium and executed by a computing device to implement at least the network access method in the foregoing embodiments.
  • This embodiment also provides a computer program product including a computer-readable device, where the computer-readable device stores the computer program as shown above.
  • the computer-readable device in this embodiment may include a computer-readable storage medium as shown above.
  • a communication medium typically contains computer-readable instructions, data structures, computer program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium. Therefore, this application is not limited to any specific combination of hardware and software.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

本申请实施例提供了一种网络接入方法、装置、网络设备和存储介质，该网络接入方法包括：当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；所述当前IAB节点根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。

Description

网络接入方法、装置、网络设备和计算机可读存储介质
本申请要求在2018年08月09日提交中国专利局、申请号为201810904077.X的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及但不限于网络通信领域，具体而言，涉及但不限于网络接入方法、装置、网络设备和计算机可读存储介质。
背景技术
NR(New Radio，新空口)与LTE(Long Term Evolution，长期演进)相比具有更大的可用带宽，massive MIMO(Multiple-Input Multiple-Output，多入多出技术)，和multi-beam(多波束)的使用，使得自接入回传链路(IAB，integrated access and backhaul links)的研究和应用成为可能。通过无线的回传链路和中继链路，能更灵活的部署密集的NR小区网络却不需要相应地增加传输网络的密集部署。支持用户设备(User Equipment，UE)的无线接入并且将用户面或控制面数据包进行无线回传的接入节点称为IAB节点(IAB node)。而为IAB node提供无线回传功能，以使得接入IAB node的UE接入核心网的接入节点称为IAB宿主(IAB donor)。IAB节点可通过空口接入另一个IAB节点(也可称为父IAB节点，parent IAB node)或接入IAB donor。接入节点之间可通过无线的回传链路backhaul link传输用户面或控制面数据包。访问链路(Access link)和backhaul link可使用相同或不同的载频。用户面或控制面数据包可通过接入节点与核心网网元之间的多跳的中继回传链路进行传输。相关技术中，缺乏IAB架构中的IAB的接入方法，无法保证数据包的成功传输。
发明内容
本发明实施例提供的网络接入方法、装置、网络设备和计算机可读存储介质，主要解决的技术问题是相关技术中IAB架构中的IAB的接入问题。
本发明实施例提供一种网络接入方法，包括：
当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；
所述当前IAB节点根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。
本发明实施例还提供一种网络接入装置，包括：
信息获取模块，用于从上级IAB节点获取小区接入相关信息；
网络接入模块，用于根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。
本发明实施例还提供一种网络设备，网络设备包括处理器、存储器及通信总线；
通信总线用于实现处理器和存储器之间的连接通信；
处理器用于执行存储器中存储的一个或者多个计算机程序，以实现上述的网络接入方法的步骤。
本发明实施例还提供一种计算机存储介质，计算机可读存储介质存储有一个或者多个程序，一个或者多个程序可被一个或者多个处理器执行，以实现上述的网络接入方法的步骤。
根据本发明实施例提供的网络接入方法、装置、网络设备和存储介质，通过当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；所述当前IAB节点根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。从而通过小区接入相关信息实现了IAB节点的接入，从而实现了数据包的成功传输。
附图说明
图1为本发明实施例中IAB场景示意图；
图2为本发明实施例中IAB场景示意图；
图3为本申请第一实施例中网络接入方法流程图；
图4为本发明实施例中IAB接入示意图；
图5为本申请第七实施例中网络接入装置组成示意图；
图6为本申请第八实施例中的网络设备组成示意图。
具体实施方式
下面通过具体实施方式结合附图对本发明实施例作可选的详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
如图1所示，UE的上行数据包可通过2个IAB node发送至IAB donor，然后再发送至5G核心网(NGC)。另一方面，支持集中单元/分布单元(Centralized Unit/Distributed Unit，CU/DU)分离部署是NR中一个重要的技术特征，即下一代节点B(generation Node B，gNB)由CU和DU逻辑功能组成，CU/DU分离 部署场景中支持IAB示意图见图2。另外，CU还可由控制面(也可称为CU-CP)和用户面(也可称为CU-UP)逻辑功能组成。
第一实施例
本实施例提供了一种网络接入方法，请参考图3，该网络接入方法包括：
S301、当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息。
S302、当前IAB节点根据小区接入相关信息，确定候选小区和/或执行接入尝试。
其中，在本实施例中，确定候选小区，也就是根据该小区接入相关信息，来确定是否将对应的小区作为候选小区；而执行接入尝试，则是根据小区接入相关信息，来判断是否需要执行接入尝试。
在一些实施例中，小区接入相关信息可以包括如下至少之一：小区是否禁止(cell barred)的指示信息；小区是否保留(cell reserved)的指示信息；保留小区用于IAB的指示信息；允许IAB接入的指示信息；接入控制信息。
在一些实施例中，接入控制信息包括接入类别和/或接入标识Access Categories and Access Identities对应的接入控制参数。
在一些实施例中，上级IAB节点可以包括：父IAB节点parent IAB node，或IAB宿主IAB donor。
在一些实施例中，当前IAB节点从上级IAB节点获取小区接入相关信息包括：当前IAB节点通过系统消息从上级IAB节点获得小区接入相关信息。
在一些实施例中，当前IAB节点根据小区接入相关信息确定确定候选小区和/或执行接入尝试包括：当前IAB节点根据以下信息中的至少之一确定是否将小区接入相关信息对应的小区作为候选小区，或者是否执行接入尝试：接入标识、接入类别以及小区接入相关信息。
在一些实施例中，在IAB节点确定是否将小区接入相关信息对应的小区作为候选小区，或者是否执行接入尝试之前，还包括：当前IAB节点根据预配置信息和/或预定义规则，确定接入标识和/或接入类别。
在一些实施例中，还可以包括：当前IAB节点向上级IAB节点发送辅助信息。
在一些实施例中，辅助信息包括如下至少之一：IAB节点指示信息；IAB相关连接建立原因值；移动终端部分MT(Mobile Termination)part标识；分布式单元部分DU(distributed unit)part标识；用于IAB的专用核心网身份标识 DCN(Dedicated Core Networks)ID；用于IAB的单一网络切片选择辅助信息(Single Network Slice Selection Assistance Information，S-NSSAI)；用于IAB的切片/服务类型SST(Slice/Service Type)；用于IAB的切片微分器SD(Slice Differentiator)；IAB节点支持的S-NSSAI信息；IAB节点支持的Slice/Service Type信息；IAB节点支持的DCN ID信息；是否支持IAB的指示信息。
在一些实施例中，当前IAB节点向上级IAB节点发送辅助信息可以包括：当前IAB节点通过如下消息中至少之一向上级IAB节点发送辅助信息：无线资源控制RRC消息、F1消息、X2消息以及Xn消息。
在一些实施例中，还可以包括：当前IAB节点从上级IAB节点或核心网网元接收上级IAB节点或核心网网元的IAB能力相关信息。
在一些实施例中，核心网网元可以包括移动性管理实体MME或接入和移动性管理功能AMF。
在一些实施例中，在当前IAB节点从核心网网元接收核心网网元的IAB能力相关信息之前或之后，还可以包括：当前IAB节点向核心网网元发送IAB能力相关信息。
在一些实施例中，IAB能力相关信息包括如下至少之一：支持的S-NSSAI信息；支持的Slice/Service Type信息；支持的DCN ID信息；是否支持IAB的指示信息。
本实施例中IAB node可以具有gNB-DU功能，IAB donor gNB可以具有IAB donor DU和/或IAB donor CU功能。
本实施例提供了一种网络接入方法，通过当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；所述当前IAB节点根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。从而通过小区接入相关信息实现了IAB节点的接入，从而实现了数据包的成功传输。
第二实施例
本实施例为接入IAB节点或IAB donor的方式。本实施例场景图如图4所示，UE通过演进型陆地无线接入新的无线双连接(evolved-terrestrial radio access-new radio dual connectivity，EN-DC)方式接入网络，IAB node1和IAB node2通过独立组网(Standalone，SA)方式接入网络。需注意的是，本实施例中以CU/DU分离场景为例，本实施例同样适用于非CU/DU分离场景，则IAB node和/或IAB donor具有gNB功能。
本实施例中，IAB node或IAB donor的系统消息中包含小区接入相关信息。其中，系统消息可以为主信息块(Master Information Block，MIB)，系统信息块(System Information Block，SIB)1，或其它系统消息。其中，小区接入相关信息至少包括以下之一：小区是否禁止(cell barred)的指示信息；小区是否保留(cell reserved)的指示信息；保留小区用于IAB的指示信息；允许IAB接入的指示信息。
UE或IAB node MT接收到IAB node或IAB donor的系统消息后，根据系统消息中包含的小区接入相关信息判断是否可在小区选择/重选过程中将该小区作为候选小区，或者，判断是否执行接入尝试(或执行无线资源控制(Radio Resource Control，RRC)连接建立过程)。例如，若系统消息中包含以下信息之一时，UE判断不将该小区作为候选小区或者不执行接入尝试，在判定系统消息中没有包括以下信息的情况下，IAB判断可将该小区作为候选小区或者可执行接入尝试：
1)小区禁止(cell barred)指示信息，保留小区用于IAB的指示信息。
2)小区禁止(cell barred)指示信息，IAB允许接入的指示信息。
3)保留小区用于IAB的指示信息。
4)小区保留(cell reserved)指示信息，保留小区用于IAB的指示信息。
5)小区保留(cell reserved)指示信息；IAB允许接入的指示信息。
可选的，若IAB node MT确定执行接入尝试，IAB node MT在RRC连接建立过程中向基站(parent IAB node或IAB donor)发送的消息中指示其为IAB节点，或者指示连接建立原因值为IAB相关，例如，可通过RRC连接建立请求消息。需要注意的是，本实施例同样适用于IAB node通过非独立组网(Non-Standalone，NSA)方式接入的情况。
第三实施例
本实施例为接入IAB节点或IAB donor的方式。本实施例场景图请继续参考如图4所示，UE通过EN-DC方式接入网络，IAB node 1和IAB node 2通过SA方式接入网络。需注意的是，本实施例中以CU/DU分离场景为例，本实施例同样适用于非CU/DU分离场景，则IAB node和/或IAB donor具有gNB功能。
本实施例中，IAB node MT被配置为IAB对应的接入标识access identity；和/或，定义IAB对应的接入类别access category，IAB node MT发起接入尝试前确定IAB对应的接入类别。UE从IAB node或IAB donor接收的系统消息(如， SIB1)中包含接入控制信息(也可称为barring control information，或access control information)，接入控制信息中包含Access Categories and Access Identities对应的接入控制参数。UE根据其从系统消息中获得的接入控制信息和本次接入尝试对应的Access Categorie和Access Identity确定相应的接入控制参数，并根据该控制参数确定是否将该小区作为候选小区或是否执行接入尝试。
可选的，若IAB node MT确定执行接入尝试，IAB node MT在RRC连接建立过程中向基站(parent IAB node或IAB donor)发送的消息中包含IAB节点指示信息，或者指示连接建立原因值为IAB相关，例如，可通过RRC连接建立请求消息。需要注意的是，本方法同样适用于IAB node通过NSA方式接入的情况。
值得一提的是，上述第二实施例和第三实施例可组合使用。
第四实施例
本实施例为接入IAB节点或IAB donor的方式。本实施例中，IAB node所接入的核心网为5GC。本实施例中，为IAB定义专用的功能实体或网络或网络切片，并定义用于IAB的网络切片对应的SST(Slice/Service Type)值，和/或SD(Slice Differentiator)值。IAB node获得用于IAB的S-NSSAI，其中包含SST(Slice/Service Type)值，和/或SD(Slice Differentiator)值；或者，IAB node获得相应的临时标识(Temp ID)，Temp ID中包含相应的核心网标识信息(CN identity information)，如AMF标识信息；IAB node MT在RRC连接建立过程(或Attach，或跟踪区更新(Tracking Area Update，TAU)或路由区更新(Routing Area Update，RAU)过程)中，将Temp ID和/或S-NSSAI信息发送给parent IAB node或IAB donor。或者，IAB node MT在RRC连接建立过程(或Attach，或TAU或RAU过程)中向基站(parent IAB node或IAB donor)发送的消息中包含IAB节点指示信息，或者指示连接建立原因值为IAB相关。parent IAB node或IAB donor根据Temp ID和/或S-NSSAI信息，或IAB节点指示信息为IAB node选择支持IAB的网元，或者为IAB node选择支持所请求的切片(slice)的AMF，或者，根据Temp ID中的CN identity information选择AMF，或者，选择默认的(default)AMF。
可选的，IAB node和AMF之间交互其支持的S-NSSAI或Slice/Service Type或是否支持IAB；或者，IAB donor和AMF之间交互其支持的S-NSSAI或Slice/Service Type或是否支持IAB。
可选的，AMF在发送给IAB node或IAB donor的初始上下文建立请求消息，或协议数据单元(Protocol Data Unit，PDU)会话(session)建立/修改/释放请 求消息中包含用于IAB的网络切片对应的S-NSSAI，其中包含SST(Slice/Service Type)值，和/或SD(Slice Differentiator)值。
第五实施例
本实施例为接入IAB节点或IAB donor的方式。本实施例中，IAB node所接入的核心网为5GC。本实施例中，为IAB定义专用的功能实体或网络，并定义用于IAB的专用网络Dedicated Core Networks(DCN)对应的DCN ID。IAB node获得用于IAB的DCN ID，IAB node MT在RRC连接建立过程(或Attach，或TAU或RAU过程)中，将DCN ID发送给parent IAB node或IAB donor。或者，IAB node MT在RRC连接建立过程中向基站(parent IAB node或IAB donor)发送的消息中包含IAB节点指示信息，或者指示连接建立原因值为IAB相关。parent IAB node或IAB donor根据DCN ID或IAB节点指示信息为IAB node选择支持IAB的网元(如MME)。
可选的，IAB node和MME之间通过S1接口交互其支持的DCN ID或是否支持IAB；或者，IAB donor和MME之间通过S1接口交互其支持的DCN ID或是否支持IAB。
第六实施例
本实施例为接入IAB节点或IAB donor的方式。本实施例中，IAB node通过NSA或SA方式接入网络。
IAB node通过RRC消息(例如，RRC连接建立消息)将其MT part标识和/或DU part标识发送给parent IAB node或IAB donor。或者，IAB node通过F1消息(例如，F1建立请求(F1setup request)消息)将其MT part标识和/或DU part标识发送给IAB donor。其中MT part标识用于标识IAB节点的移动终端MT部分，具体可包括以下其中之一：小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)以及分配C-RNTI的节点或小区标识、F1AP ID、X2AP ID、XnAP ID、S1AP ID、NGAP ID，GTP TEID，DU标识，小区标识，PCI，其它用于标识IAB节点的移动终端MT部分的标识。DU part标识用于标识IAB节点的DU、CU或者基站，具体可包括以下其中之一：DU标识，CU标识，基站标识，小区标识，PCI，IP地址，其它用于标识IAB节点的DU部分的标识。
IAB donor接收后，保存并维护IAB node MT part标识和DU part标识，或两者之间的对应关系。
第七实施例
本实施例提供了一种网络接入装置，请参考图5，该网络接入装置包括：数据确定模块51，用于从上级IAB节点获取小区接入相关信息；网络接入模块52，用于根据小区接入相关信息，确定候选小区和/或执行接入尝试。
在一些实施例中，小区接入相关信息可以包括如下至少之一：小区是否禁止(cell barred)的指示信息；小区是否保留(cell reserved)的指示信息；保留小区用于IAB的指示信息；允许IAB接入的指示信息；接入控制信息。
在一些实施例中，接入控制信息包括接入类别和/或接入标识Access Categories and Access Identities对应的接入控制参数。
在一些实施例中，上级IAB节点可以包括：父IAB节点parent IAB node，或IAB宿主IAB donor。
在一些实施例中，当前IAB节点从上级IAB节点获取小区接入相关信息包括：当前IAB节点通过系统消息从上级IAB节点获得小区接入相关信息。
在一些实施例中，当前IAB节点根据小区接入相关信息确定确定候选小区和/或执行接入尝试包括：当前IAB节点根据以下信息中的至少之一确定是否将小区接入相关信息对应的小区作为候选小区，或者是否执行接入尝试：接入标识、接入类别以及小区接入相关信息。
一些实施例中，在IAB节点确定是否将小区接入相关信息对应的小区作为候选小区，或者是否执行接入尝试之前，还包括：当前IAB节点根据预配置信息和/或预定义规则，确定接入标识和/或接入类别。
在一些实施例中，还可以包括：当前IAB节点向上级IAB节点发送辅助信息。
在一些实施例中，辅助信息包括如下至少之一：IAB节点指示信息；IAB相关连接建立原因值；移动终端部分MT(Mobile Termination)part标识；分布式单元部分DU(distributed unit)part标识；用于IAB的专用核心网身份标识DCN(Dedicated Core Networks)ID；用于IAB的S-NSSAI；用于IAB的切片/服务类型SST(Slice/Service Type)；用于IAB的切片微分器SD(Slice Differentiator)；IAB节点支持的S-NSSAI信息；IAB节点支持的Slice/Service Type信息；IAB节点支持的DCN ID信息；是否支持IAB的指示信息。
在一些实施例中，当前IAB节点向上级IAB节点发送辅助信息可以包括：当前IAB节点通过如下消息中至少之一向上级IAB节点发送辅助信息：无线资 源控制RRC消息、F1消息、X2消息以及Xn消息。
在一些实施例中，还可以包括：当前IAB节点从上级IAB节点或核心网网元接收上级IAB节点或核心网网元的IAB能力相关信息。
在一些实施例中，核心网网元可以包括移动性管理实体MME或接入和移动性管理功能AMF。
在一些实施例中，在当前IAB节点从核心网网元接收核心网网元的IAB能力相关信息之前或之后，还可以包括：当前IAB节点向核心网网元发送IAB能力相关信息。
在一些实施例中，IAB能力相关信息包括如下至少之一：支持的S-NSSAI信息；支持的Slice/Service Type信息；支持的DCN ID信息；是否支持IAB的指示信息。
本实施例中IAB node可以具有gNB-DU功能，IAB donor gNB可以具有IAB donor DU和/或IAB donor CU功能。
本实施例提供了一种网络接入装置，通过当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；所述当前IAB节点根据所述小区接入相关信息，确定候选小区和/或执行接入尝试。从而通过小区接入相关信息实现了IAB节点的接入，从而实现了数据包的成功传输。
第八实施例
本实施例还提供了一种网络设备，参见图6所示，其包括处理器61、存储器62及通信总线63，其中：通信总线63用于实现处理器61和存储器62之间的连接通信；处理器61用于执行存储器62中存储的一个或者多个计算机程序，以实现上述各实施例中的网络接入方法的步骤，这里不再赘述。
本实施例还提供了一种计算机可读存储介质，该计算机可读存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、计算机程序模块或其他数据)的任何方法或技术中实施的易失性或非易失性、可移除或不可移除的介质。计算机可读存储介质包括但不限于RAM(Random Access Memory，随机存取存储器)，ROM(Read-Only Memory，只读存储器)，EEPROM(Electrically Erasable Programmable read only memory，带电可擦可编程只读存储器)、闪存或其他存储器技术、CD-ROM(Compact Disc Read-Only Memory，光盘只读存储器)，数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、 或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。
本实施例中的计算机可读存储介质可用于存储一个或者多个计算机程序，其存储的一个或者多个计算机程序可被处理器执行，以实现上述各实施例中的网络接入方法的至少一个步骤。
本实施例还提供了一种计算机程序(或称计算机软件)，该计算机程序可以分布在计算机可读介质上，由可计算装置来执行，以实现上述各实施例中的网络接入方法的至少一个步骤。
本实施例还提供了一种计算机程序产品，包括计算机可读装置，该计算机可读装置上存储有如上所示的计算机程序。本实施例中该计算机可读装置可包括如上所示的计算机可读存储介质。
可见，本领域的技术人员应该明白，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件(可以用计算装置可执行的计算机程序代码来实现)、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。
此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、计算机程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。所以，本申请不限制于任何特定的硬件和软件结合。
以上内容是结合具体的实施方式对本发明实施例所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

Claims (17)

  1. 一种网络接入方法，包括：
    当前自接入及回传IAB节点从上级IAB节点获取小区接入相关信息；
    所述当前IAB节点根据所述小区接入相关信息，进行以下操作至少之一：确定候选小区和执行接入尝试。
  2. 如权利要求1所述的网络接入方法，其中，所述小区接入相关信息包括如下至少之一：
    小区是否禁止的指示信息；
    小区是否保留的指示信息；
    保留小区用于IAB的指示信息；
    允许IAB接入的指示信息；
    接入控制信息。
  3. 如权利要求2所述的网络接入方法，其中，所述接入控制信息包括接入类别和接入标识中的至少之一对应的接入控制参数。
  4. 如权利要求1-3任一项所述的网络接入方法，其中，所述上级IAB节点包括：父IAB节点parent IAB node，或IAB宿主IAB donor。
  5. 如权利要求1-3任一项所述的网络接入方法，其中，所述当前IAB节点从上级IAB节点获取小区接入相关信息包括：所述当前IAB节点通过系统消息从上级IAB节点获得小区接入相关信息。
  6. 如权利要求1-3任一项所述的网络接入方法，其中，所述当前IAB节点根据小区接入相关信息，进行以下操作至少之一：确定候选小区和执行接入尝试包括：
    所述当前IAB节点根据以下信息中的至少之一确定是否将所述小区接入相关信息对应的小区作为候选小区或者是否执行接入尝试：接入标识、接入类别以及所述小区接入相关信息。
  7. 如权利要求6所述的网络接入方法，在所述IAB节点确定是否将所述小区接入相关信息对应的小区作为候选小区，或者是否执行接入尝试之前，还包括：
    所述当前IAB节点根据预配置信息和预定义规则中的至少之一，确定所述接入标识和所述接入类别中的至少之一。
  8. 如权利要求1-3任一项所述的网络接入方法，还包括：
    所述当前IAB节点向所述上级IAB节点发送辅助信息。
  9. 如权利要求8所述的网络接入方法，其中，所述辅助信息包括如下至少之一：
    IAB节点指示信息；
    IAB相关连接建立原因值；
    移动终端部分MT part标识；
    分布式单元部分DU part标识；
    用于IAB的专用核心网标识DCN ID；
    用于IAB的单一网络切片选择辅助信息S-NSSAI；
    用于IAB的切片/服务类型SST；
    用于IAB的切片微分器SD；
    IAB节点支持的S-NSSAI信息；
    IAB节点支持的SST信息；
    IAB节点支持的DCN ID信息；
    是否支持IAB的指示信息。
  10. 如权利要求8所述的网络接入方法，其中，所述当前IAB节点向所述上级IAB节点发送辅助信息包括：所述当前IAB节点通过如下消息中至少之一向所述上级IAB节点发送辅助信息：无线资源控制RRC消息、F1消息、X2消息以及Xn消息。
  11. 如权利要求1-3任一项所述的网络接入方法，还包括：所述当前IAB节点从所述上级IAB节点接收所述上级IAB节点的IAB能力相关信息，或所述当前IAB节点从核心网网元接收所述核心网网元的IAB能力相关信息。
  12. 如权利要求11所述的网络接入方法，其中，所述核心网网元包括移动性管理实体MME或接入和移动性管理功能AMF。
  13. 如权利要求11所述的网络接入方法，在所述当前IAB节点从核心网网元接收核心网网元的IAB能力相关信息之前或之后，还包括：
    所述当前IAB节点向所述核心网网元发送IAB能力相关信息。
  14. 如权利要求11所述的网络接入方法，其中，所述IAB能力相关信息包括如下至少之一：
    支持的S-NSSAI信息；
    支持的SST信息；
    支持的DCN ID信息；
    是否支持IAB的指示信息。
  15. 一种网络接入装置，包括：
    信息获取模块(51)，设置为从上级IAB节点获取小区接入相关信息；
    网络接入模块(52)，设置为根据所述小区接入相关信息，进行以下操作至少之一：确定候选小区和执行接入尝试。
  16. 一种网络设备，所述网络设备包括处理器(61)、存储器(62)及通信总线(63)；
    所述通信总线(63)设置为实现处理器(61)和存储器(62)之间的连接通信；
    所述处理器(61)用于执行存储器(62)中存储的至少一个计算机程序，以实现如权利要求1至14中任一项所述的网络接入方法。
  17. 一种计算机可读存储介质，存储有至少一个计算机程序，所述至少一个计算机程序可被至少一个处理器执行，以实现如权利要求1至14中任一项所述的网络接入方法。
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