WO2017167027A1 - 一种网络接入方法、相关设备和系统 - Google Patents

一种网络接入方法、相关设备和系统 Download PDF

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Publication number
WO2017167027A1
WO2017167027A1 PCT/CN2017/076959 CN2017076959W WO2017167027A1 WO 2017167027 A1 WO2017167027 A1 WO 2017167027A1 CN 2017076959 W CN2017076959 W CN 2017076959W WO 2017167027 A1 WO2017167027 A1 WO 2017167027A1
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Prior art keywords
ran
temporary identifier
node
network node
core network
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PCT/CN2017/076959
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English (en)
French (fr)
Inventor
张娟
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电信科学技术研究院
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Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to US16/084,532 priority Critical patent/US10462716B2/en
Priority to JP2018551308A priority patent/JP7086853B2/ja
Priority to EP17773057.9A priority patent/EP3419344A4/en
Priority to KR1020187031435A priority patent/KR102329095B1/ko
Publication of WO2017167027A1 publication Critical patent/WO2017167027A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • 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
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break
    • 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
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link 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
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00695—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using split of the control plane or user plane
    • 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

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a network access method, related device, and system.
  • the core network in the mobile communication system only allows the radio access network (RAN) of the Long Term Evolution (LTE) network to access, and the RAN of the 2G/3G network cannot access the core network, that is, the user terminal (UE, User Equipment) can only choose to camp on an LTE network or a 2G/3G network at the same time.
  • the UE User Equipment
  • scenarios in which the UE needs to reside in the network through two RANs at the same time may occur in the future.
  • 5G a scenario in which the UE needs to access the network through multiple access systems is required. It can be seen that the current UE camping on the network through two RANs is a technical problem that needs to be solved urgently.
  • An object of the present disclosure is to provide a network access method, related device, and system, which solves the problem that a UE resides in a network through two RANs at the same time.
  • an embodiment of the present disclosure provides a network access method, including:
  • the UE saves the identification information of the network node accessed by the first RAN;
  • the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the identifier information of the network node, so that the second RAN selects the
  • the network node acts as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, and the UE accesses the first RAN. And the core network node allocates a temporary identifier to the UE, where the temporary identifier includes the identifier information of the core network node, and the identifier information of the network node that the UE saves in the first RAN, including:
  • the UE receives and saves the temporary identifier.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network
  • the UE receives and saves the temporary identifier and the identifier information of the aggregation node, where the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the identifier information of the aggregation node is sent by the aggregation node to the UE when the aggregation node receives the temporary identifier sent by the core network node, and the aggregation node uses The temporary identifier manages and associates context information of the UE.
  • the connection establishment request includes: the identifier information of the aggregation node and the temporary identifier, so that the second RAN selects the aggregation node as an aggregation of the UE in the second RAN access a node, and the context information used by the aggregation node to manage and associate the UE with the temporary identifier, and transmitted by an interface between the aggregation node and the core network node established by the UE in the first RAN The message sent by the UE in the second RAN.
  • the temporary identifier is a first temporary identifier
  • the UE receives and saves the temporary identifier and the identifier information of the aggregation node, including:
  • the UE receives and saves the first temporary identifier and the second temporary identifier, where the second temporary identifier is a temporary identifier that is allocated by the aggregation node to the UE, and the second temporary identifier includes the aggregation node. Identification information.
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, so that the second RAN selects the aggregation node as the UE accesses the second RAN. Aggregating the node, and sending the second temporary identifier to the aggregation node, where the aggregation node uses the second temporary identifier to manage and associate context information of the UE.
  • the embodiment of the present disclosure further provides a network access method, including:
  • the RAN node of the second RAN receives the connection establishment request sent by the UE, and the connection establishment is requested.
  • the request is sent by the UE when the connection of the first RAN is reserved, and includes identifier information of the network node that the UE accesses in the first RAN;
  • the RAN node uses the identification information to select the network node as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, the connection establishment request includes the temporary identification.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the connection establishment request includes: identifier information of the aggregation node and the temporary identifier, and the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the RAN node uses the identifier information to select the network node as the network node that the UE accesses in the second RAN, including:
  • the RAN node selects the aggregation node as an aggregation node that the UE accesses in the second RAN, so that the aggregation node manages and associates the UE by using the temporary identifier.
  • Context information and transmitting, by the UE, an interface sent by the UE in the second RAN by using an interface between the aggregation node and the core network node established by the UE in the first RAN.
  • the temporary identifier is a first temporary identifier
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, where the second temporary identifier is allocated by the aggregation node to the UE a temporary identifier, where the second temporary identifier includes identifier information of the aggregation node;
  • the RAN node uses the identifier information to select the network node as the network node that the UE accesses in the second RAN, including:
  • the RAN node selects the network node as a network node that the UE accesses in the second RAN, so that the second temporary identifier is used by the aggregation node to manage and associate Context information of the UE.
  • the embodiment of the present disclosure further provides a network access method, including:
  • the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the identifier information of the core network node;
  • the connection establishment request includes the temporary identifier, and the core network node is selected by the second RAN as a core network node that the UE accesses in the second RAN.
  • the sending, by the core network node, the temporary identifier to the UE includes:
  • the core network node Sending, by the core network node, the temporary identifier to the aggregation node, so that the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, where the aggregation node is the UE
  • a RAN establishes an aggregation node that is connected to the core network node.
  • the method further includes:
  • the UE Receiving, by the core network node, the UE transmitting the UE in the second RAN by using an interface between the aggregation node and the core network node established by the UE in the first RAN Message.
  • the temporary identifier is a first temporary identifier
  • the identifier information of the aggregation node is a second temporary identifier that is allocated by the aggregation node to the UE
  • the second temporary identifier includes an identifier of the aggregation node. information.
  • the embodiment of the present disclosure further provides a network access method, including:
  • the aggregation node receives the temporary identifier sent by the core network node, where the temporary identifier is that the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network node. Identification information;
  • the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, so that the UE establishes a connection between the aggregation node and the core network node in the first RAN;
  • the aggregation node manages and associates context information of the UE according to the connection establishment request.
  • the method further includes:
  • connection establishment request sent by the second RAN includes the identifier information and the temporary identifier
  • the aggregation node manages and associates context information of the UE according to the connection establishment request, including:
  • the aggregation node manages and associates context information of the UE using the temporary identity.
  • the temporary identifier is a first temporary identifier
  • the method further includes:
  • the aggregation node allocates a second temporary identifier to the UE, the identifier information of the aggregation node is the second temporary identifier, and the second temporary identifier includes identifier information of the aggregation node.
  • connection establishment request sent by the second RAN includes the first temporary identifier and the second temporary identifier
  • the aggregation node manages and associates context information of the UE according to the connection establishment request, including:
  • the aggregation node manages and associates context information of the UE with the second temporary identifier.
  • the embodiment of the present disclosure further provides a UE, including:
  • a saving module configured to save identifier information of the network node that the UE accesses in the first RAN
  • a sending module configured to send a connection establishment request to the second RAN when the UE reserves the connection of the first RAN, where the connection establishment request includes the identifier information of the network node, so that the second RAN is The UE selects the network node as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • the saving module is configured to receive and save the temporary identifier.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node, the saving module is configured to receive and save the temporary identifier and the identifier information of the aggregation node, where the aggregation node establishes, in the first RAN, a connection with the core network node. Aggregate node.
  • the identifier information of the aggregation node is sent by the aggregation node to the UE when the aggregation node receives the temporary identifier sent by the core network node, and the aggregation node uses The temporary identifier manages and associates context information of the UE.
  • the connection establishment request includes: the identifier information of the aggregation node and the temporary identifier, so that the second RAN selects the aggregation node as an aggregation of the UE in the second RAN access a node, and the context information used by the aggregation node to manage and associate the UE with the temporary identifier, and transmitted by an interface between the aggregation node and the core network node established by the UE in the first RAN The message sent by the UE in the second RAN.
  • the temporary identifier is a first temporary identifier
  • the saving module is configured to receive and save the first temporary identifier and the second temporary identifier, where the second temporary identifier is that the aggregation node is the UE An assigned temporary identifier, and the second temporary identifier includes identification information of the aggregation node.
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, so that the second RAN selects the aggregation node as the UE accesses the second RAN. Aggregating the node, and sending the second temporary identifier to the aggregation node, where the aggregation node uses the second temporary identifier to manage and associate context information of the UE.
  • the embodiment of the present disclosure further provides a RAN node, where the RAN node is a RAN node of the second RAN, and includes:
  • a receiving module configured to receive a connection establishment request sent by the UE, where the connection establishment request is sent by the UE when the connection of the first RAN is reserved, and includes the network node that the UE accesses in the first RAN Identification information;
  • a selecting module configured to use the identifier information to select the network node as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, the connection establishment request includes the temporary identification.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the connection establishment request includes: identifier information of the aggregation node and the temporary identifier, and the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the selecting module is configured to select the aggregation by using identifier information of the aggregation node.
  • a node is used as an aggregation node of the UE in the second RAN, so that the aggregation node uses the temporary identifier to manage and associate context information of the UE, and is established by the UE in the first RAN.
  • the temporary identifier is a first temporary identifier
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, where the second temporary identifier is allocated by the aggregation node to the UE a temporary identifier, where the second temporary identifier includes identifier information of the aggregation node;
  • the selecting module is configured to use the second temporary identifier to select the network node as a network node that the UE accesses in the second RAN, so that the second temporary identifier is managed by the aggregation node. And context information associated with the UE.
  • the embodiment of the present disclosure further provides a core network node, including:
  • An allocating module configured to allocate a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the identifier information of the core network node;
  • a sending module configured to send the temporary identifier to the UE, to enable the UE to save the temporary identifier, and send, by the UE, a connection establishment request to the second RAN when the connection of the first RAN is reserved, where The connection establishment request includes the temporary identifier, and the core network node is selected by the second RAN as a core network node that the UE accesses in the second RAN.
  • the sending module is configured to send the temporary identifier to the aggregation node, so that the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, where the aggregation node is The UE establishes an aggregation node connected to the core network node in the first RAN.
  • the core network node further includes:
  • a receiving module configured to receive, by the aggregation node, an interface that is sent by the UE between the aggregation node and the core network node that is established by the UE in the first RAN, and that is sent by the UE in the second RAN Message.
  • the temporary identifier is a first temporary identifier
  • the identifier information of the aggregation node is a second temporary identifier that is allocated by the aggregation node to the UE
  • the second temporary identifier includes an identifier of the aggregation node. information.
  • An embodiment of the present disclosure further provides an aggregation node, including:
  • a first receiving module configured to receive a temporary identifier sent by a core network node, where the temporary identifier is When the UE accesses the first RAN, the core network node allocates a temporary identifier to the UE, and the temporary identifier includes identifier information of the core network node;
  • a sending module configured to send the temporary identifier and the identifier information of the aggregation node to the UE, so that the UE establishes a connection between the aggregation node and the core network node in the first RAN;
  • a second receiving module configured to receive a connection establishment request sent by the second RAN, where the connection establishment request is sent when the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved;
  • a management module configured to manage and associate context information of the UE according to the connection establishment request.
  • the aggregation node further includes:
  • a delivery module configured to transmit, by using an interface between the aggregation node and the core network node established by the UE in the first RAN, a message sent by the UE in the second RAN.
  • connection establishment request sent by the second RAN includes the identifier information and the temporary identifier
  • the management module is configured to use the temporary identifier to manage and associate context information of the UE.
  • the temporary identifier is a first temporary identifier
  • the aggregation node further includes:
  • an allocating module configured to allocate a second temporary identifier to the UE, where the identifier information of the aggregation node is the second temporary identifier, and the second temporary identifier includes identifier information of the aggregation node.
  • connection establishment request sent by the second RAN includes the first temporary identifier and the second temporary identifier, where the management module is configured to manage and associate context information of the UE by using the second temporary identifier.
  • This embodiment provides a network access system, including:
  • a core network node configured to allocate a temporary identifier to the UE when the UE accesses the first RAN, and send the temporary identifier to the UE, where the temporary identifier includes the identifier information of the core network node;
  • the UE is configured to save the temporary identifier, and send a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the temporary identifier;
  • the RAN node of the second RAN is configured to select, by using the temporary identifier, the core network node as a core network node that the UE accesses in the second RAN.
  • This embodiment provides a network access system, including:
  • a core network node configured to allocate a temporary identifier to the UE when the UE accesses the first RAN, and send the temporary identifier to the aggregation node, where the temporary identifier includes the identifier information of the core network node;
  • the aggregation node is configured to send the temporary identifier and the identifier information of the aggregation node to the UE, so that the UE establishes a connection between the aggregation node and the core network node in the first RAN;
  • the UE is configured to save the temporary identifier and the identifier information, and send a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the temporary identifier and the Identification information;
  • the RAN node of the second RAN is configured to use the identifier information to select the aggregation node as an aggregation node that the UE accesses in the second RAN.
  • the UE saves the identifier information of the network node accessed by the first RAN; the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the The identification information of the network node, so that the second RAN selects the network node for the UE as the network node that the UE accesses in the second RAN, so that the UE can reside at the same time through two RANs. In the network.
  • 1a is a schematic structural diagram of a network provided by an embodiment of the present disclosure
  • 1b is a schematic structural diagram of another network provided by an embodiment of the present disclosure.
  • FIG. 2 is a schematic flowchart of a network access method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of another network access method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic flowchart of a network access method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart of a network access method according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic flowchart of a network access method according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a RAN node according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a core network node according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of another core network node according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of an aggregation node according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of another aggregation node according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of another aggregation node according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of another RAN node according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of another core network node according to an embodiment of the present disclosure.
  • FIG. 22 is a schematic structural diagram of another aggregation node according to an embodiment of the present disclosure.
  • FIG. 23 is a schematic structural diagram of a network access system according to an embodiment of the present disclosure.
  • FIG. 24 is a schematic structural diagram of another network access system according to an embodiment of the present disclosure.
  • FIG. 1a is a schematic diagram of a network structure according to an embodiment of the present disclosure.
  • a UE11 a first RAN node 12, a second RAN node 13, and a core network node 14 are included.
  • the UE 11 may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), or a wearable device.
  • PDA personal digital assistant
  • MID mobile internet device
  • a terminal device such as a device (Wearable Device) does not limit the specific type of the UE 11 in the embodiment of the present disclosure.
  • the first RAN node 12 may be a RAN node of the first RAN, for example, a base station or a RAN device, and the first RAN may be a 5G RAN, and the specific type of the first RAN node 12 is not limited in the embodiment of the present disclosure.
  • the foregoing second RAN node 13 may be a RAN node of the second RAN, for example: a base station Or the RAN device, the second RAN may be an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). It should be noted that the second RAN node 13 is not limited in the embodiment of the present disclosure. Specific type.
  • the core network node 14 may be a core network control plane node, and the specific type of the core network node 14 is not limited in the embodiment of the present disclosure.
  • the foregoing network structure may further include an aggregation node 15, wherein the aggregation node 15 is connected between the core network node 14 and the first RAN node 12, and is connected to the core network node 14.
  • the aggregation node 15 may be any network side device, and the specific type of the aggregation node 15 is not limited in the embodiment of the present disclosure.
  • the core network node 14 and the aggregation node 15 may be multiple. The figure is illustrated by one core network node 14 and the aggregation node 15, but is not limited thereto.
  • the embodiment of the present disclosure provides a network access method, as shown in FIG. 2, including the following steps:
  • the UE saves the identifier information of the network node accessed by the first RAN.
  • the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the identifier information of the network node, so that the second RAN selects the
  • the network node acts as a network node that the UE accesses in the second RAN.
  • the network node may be a network node that is accessed by the UE when accessing the first RAN.
  • the identifier information of the foregoing network node may be received and saved when the UE accesses the first RAN.
  • the above network node may be a core network node, or may be a core network node and an aggregation node.
  • the foregoing UE sends a connection establishment request when the connection of the first RAN is reserved. It can be understood that the UE sends a connection establishment request to the second RAN while the first RAN resides in the network. This can enable the UE to reside in the network through the first RAN and the second RAN at the same time.
  • the foregoing connection establishment request may be a signaling connection request, for example, a radio resource control (RRC) connection establishment request, that is, requesting to establish an RRC connection with the second RAN.
  • RRC radio resource control
  • the connection request in this embodiment may be a signaling connection request, but is not limited thereto.
  • the foregoing second RAN can select the foregoing network node by using the foregoing connection establishment request.
  • the network node that the UE accesses in the second RAN is the same as the network node that is accessed in the first RAN, for example, accessing the same core network node.
  • the second RAN may also understand the RAN node of the second RAN.
  • the network node may include a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, step 201 can include:
  • the UE receives and saves the temporary identifier.
  • the foregoing temporary identifier can be understood as a temporary identifier allocated by the core network node when the UE accesses the core network node by using the first RAN, so as to implement the foregoing UE accessing the core network node in the first RAN.
  • the UE accesses the first RAN it may be understood that the UE accesses the core network through the first RAN.
  • the first RAN is used as an example for the 5G RAN.
  • the UE accesses the 5G RAN through step 301 and initiates a registration process to register with the core network.
  • the core network control plane node allocates a temporary identifier to the UE in step 302 and is included in the returned NAS message.
  • the 5G RAN node sends a temporary identifier to the UE in step 303 to complete the RRC procedure, and the UE returns an RRC response to the 5G RAN node through step 304. And the 5G RAN returns a response message to the 5G core network control plane node through step 305.
  • the foregoing UE accesses the core network through the 5G RAN, and acquires a temporary identifier allocated by the core network node.
  • the second RAN may use the temporary identifier to select the core network node as the network node that the UE accesses in the second RAN.
  • the second RAN may send a connection establishment request to the core network node, where the connection establishment request may include the temporary identifier and/or the identifier of the UE, for example, an International Mobile Subscriber Identity (IMSI) of the UE. Therefore, the second RAN establishes a connection with the core network node, that is, the UE accesses the core network in the second RAN.
  • the second RAN is used as an E-UTRAN to illustrate the embodiment. As shown in FIG.
  • the UE establishes an RRC connection to the E-UTRAN through step 401, that is, sends the E-UTRAN node to the E-UTRAN node.
  • the first connection establishment request is described.
  • the UE acquires the identification information of the core network node according to the temporary identifier allocated to the core network node that is accessed by the first RAN.
  • the identifier of the core network node may be included in the message of step 401, or the message may include the identifier of the UE, and the identifier of the UE may be the temporary identifier and/or the IMSI of the UE.
  • the E-UTRAN node may select the core network node by using the identifier information of the core network node or the temporary identifier, and send a connection establishment request to the core network node by using step 402, that is, sending the second connection establishment request.
  • the connection establishment request may be a NAS message, and the connection establishment request may include an identifier of the UE or the temporary identifier.
  • the core network node may manage and associate the context information of the UE in the first access network and the second access network according to the identifier of the UE or the temporary identifier, and return to the E-UTRAN node in step 403. Response message.
  • the UE accesses the core network in the second RAN.
  • the foregoing network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network node
  • the identification information, step 201 may include:
  • the UE receives and saves the temporary identifier and the identifier information of the aggregation node, where the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the aggregating node is configured to establish, by the UE, the aggregation node that is connected to the core network node in the first RAN, that is, when the UE accesses the first RAN, that is, when the UE accesses the core network through the first RAN, An aggregation node that connects the first RAN and the core network node, that is, the aggregation node is connected in the middle of the first RAN and the core network node.
  • the second RAN selects the foregoing aggregation node as an aggregation node that connects the core network node. In this way, the aggregation node and the core network node that the UE connects to the first RAN and the second RAN are the same.
  • the identifier information of the aggregation node is sent by the aggregation node to the UE when the aggregation node receives the temporary identifier sent by the core network node, and Using the temporary identifier to manage and associate the context information of the UE interest.
  • the core network node may send the temporary identifier to the aggregation node, and the aggregation node may also save the temporary identifier, and send the identifier information of the aggregation node to the UE, and the aggregation node uses the temporary identifier to manage and associate the context information of the UE.
  • the context information may include the UE in the first RAN and the second RAN context information.
  • the first access network is a 5G RAN as an example. As shown in FIG. 5, the UE performs a registration process through the 5G RAN to the network in step 501, and the core network node allocates a temporary identifier to the UE, and step 502 is performed.
  • the connection establishment request that is, the third connection establishment request, sends the temporary identification to the aggregation node, and the connection establishment request may be a NAS message.
  • the aggregation node saves the temporary identifier, and the aggregation node uses the temporary identifier to associate and manage the context information of the UE after receiving the temporary identifier allocated by the core network node for the UE. And the aggregation node needs to send the identifier information of the aggregation node and the temporary identifier to the UE, and the aggregation node may be transparently transmitted to the UE through the 5G RAN node, or may be sent to the 5G RAN node in step 503, where the 5G RAN node passes the step 504.
  • the identifier information of the aggregation node and the temporary identifier are sent to the UE, and the UE saves the identifier information of the aggregation node and the temporary identifier allocated by the core network.
  • the UE to the core network node may also return a response message through steps 505-507.
  • the UE accesses the first RAN through the foregoing steps, and saves the temporary identifier and the identifier information of the aggregation node.
  • the foregoing connection establishment request may include: the identifier information of the aggregation node and the temporary identifier, so that the second RAN selects the aggregation node as the UE in the second An aggregation node accessed by the RAN, and the context information used by the aggregation node to manage and associate the UE by using the temporary identifier, and the aggregation node established by the UE in the first RAN and the core network node An inter-interface that delivers a message sent by the UE in the second RAN.
  • the second RAN may select the aggregating node as the aggregation node that the UE accesses in the second RAN, and specifically, the second RAN selects the aggregation node.
  • Sending a connection establishment request to the aggregation node to establish a connection with the aggregation node, and the request may include the foregoing temporary identifier, such that the aggregation node Using the temporary identifier to manage and associate the context information of the UE, and the aggregation node may further transmit the UE by using an interface between the aggregation node and the core network node established by the UE in the first RAN The message sent by the second RAN.
  • the interface between the foregoing aggregation node and the core network node may be understood as an interface between the core network node and the aggregation node when the first RAN accesses the core network.
  • the UE can directly use the interface between the aggregation node and the core network node in the first RAN, so that no other interface needs to be established, because the UE is in the first RAN and the second.
  • the aggregation node and the core network node accessed by the RAN are the same, thereby saving network resources.
  • the second RAN is used as the E-UTRAN. As shown in FIG.
  • the UE establishes a signaling connection in the E-UTRAN system by using the step 601, that is, the UE sends a first connection establishment request to the E-UTRAN node, where
  • the connection establishment request may be an RRC connection setup request, that is, an RRC message, where the message may include the temporary identifier and the identifier information of the aggregation node saved by the UE when accessing the first RAN.
  • the E-UTRAN node may select the aggregation node by using the identification information of the aggregation node in step 602, and initiate connection establishment to the aggregation node by step 603, that is, send a connection establishment request to the aggregation node, where the connection establishment request includes the core network node as the UE.
  • the aggregation node may also obtain the context information of the UE according to the temporary identifier allocated by the core network node to the UE, where the context information may be the context information of the UE in the first RAN and the second RAN, and pass the The connection established by the aggregation node established by the UE to access the first RAN to the core network control plane node, and the message is delivered to the core network node, for example, the acquired context information is sent to the core network node, or the UE is in the The information sent by the two RANs is delivered to the core network node.
  • the aggregation node can also send a connection establishment to the core network node through step 605.
  • the core network node can also return a response message to the UE through steps 606-608, and the UE accesses the second RAN through the foregoing steps.
  • the UE may be assigned a temporary identifier by the core network node, and the aggregation node sends the identifier information of the aggregation node to the UE, so that the UE selects the same core network node when the UE simultaneously camps on the first RAN and the second RAN. And the same aggregation node, thus effectively acting on the UE Information is managed.
  • the temporary identifier may be the first temporary identifier
  • the step 201 may include:
  • the UE receives and saves the first temporary identifier and the second temporary identifier, where the second temporary identifier is a temporary identifier that is allocated by the aggregation node to the UE, and the second temporary identifier includes the aggregation node. Identification information.
  • the second temporary identifier may be a temporary identifier allocated to the UE when the aggregation node receives the first temporary identifier sent by the core network node when the UE accesses the first RAN. And the first temporary identifier and the second temporary identifier may be sent by the aggregation node to the UE.
  • the first access network is a 5G RAN as an example.
  • the UE performs a registration process through the 5G RAN to the network through step 701, and the core network node allocates a temporary identifier to the UE (the first temporary identifier).
  • the temporary identification is sent to the aggregation node by the connection establishment request, and the connection establishment request may be a NAS message.
  • the aggregation node allocates a temporary identifier (second temporary identifier) to the UE, and the temporary identifier allocated by the aggregation node for the UE includes the identifier information of the aggregation node.
  • the aggregating node can also use this temporary identity to manage and associate the context of the UE.
  • the aggregation node may deliver the temporary identifier allocated to the UE to the UE, and the temporary information allocated by the core network node to the UE is delivered to the UE.
  • the two temporary identifier aggregation sections may be transparently transmitted to the UE through the 5G RAN node, or may be sent to the 5G RAN node in step 703.
  • the 5G RAN node then sends the two temporary identifiers to the UE through step 704.
  • the UE saves the temporary identifier assigned by the aggregation node and the temporary identifier assigned to it by the core network node.
  • the UE to the core network node may also return a response message through steps 705-707, and implement the UE accessing the first RAN through the foregoing steps, and save the first temporary identifier and the second temporary identifier.
  • the foregoing connection establishment request may include: the first temporary identifier and the second temporary identifier, so that the second RAN selects the aggregation node as the UE in the The second RAN accesses the aggregation node, and sends the second temporary identifier to the aggregation node, where the aggregation node uses the second temporary identifier to manage and associate context information of the UE.
  • the second temporary identifier may be used to select the foregoing aggregation node as the aggregation node that the UE accesses in the second RAN.
  • the connection request is sent to the aggregation node to establish a connection with the aggregation node.
  • the request may include the foregoing first temporary identifier and the second temporary identifier, such that the aggregation node uses the first temporary identifier to manage and associate context information of the UE.
  • the aggregation node may further use the foregoing first temporary identifier to transmit, by the UE, an interface between the aggregation node and the core network node established by the first RAN, to send the UE to the second RAN.
  • the second RAN is used as the E-UTRAN. As shown in FIG.
  • the UE establishes a connection in the E-UTRAN system through step 801, that is, the UE sends a first connection establishment request to the E-UTRAN node, where the connection is
  • the establishment request may be an RRC connection establishment request, that is, an RRC message, where the message may include a temporary identifier (first temporary identifier) allocated by the core network node saved by the UE when accessing the first RAN, and an aggregation node allocates it.
  • Temporary identification (second temporary identification).
  • the E-UTRAN node acquires the aggregation node that the UE camps on in the first RAN according to the temporary identifier allocated by the aggregation node for the UE, and the E-UTRAN node sends a signaling connection establishment message to the aggregation node in step 803, that is, to the aggregation node. And sending a second connection establishment request, where the message includes a temporary identifier allocated by the aggregation node for the UE and a temporary identifier allocated by the core network node to the UE.
  • the aggregation node manages and associates the context information of the UE according to the temporary identifier of the UE, and transmits the message to the core network node by using the connection established by the aggregation node to the core network control plane node established when the UE accesses the first RAN. And the aggregation node sends a signaling connection establishment to the core network control plane node through step 805. And the core network node to the UE may also return a response message through the steps 806-808, and the foregoing steps are implemented to implement the UE in the second RAN accessing the core network, and the UE is in the first RAN and the second RAN accessing the aggregation node and the core.
  • the network nodes are the same.
  • the UE saves the identifier information of the network node that is accessed by the first RAN; the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection is established.
  • the request includes the identification information of the network node, so that the second RAN selects the network node for the UE as the network node that the UE accesses in the second RAN, so that the UE can simultaneously pass two
  • the RAN resides in the network.
  • the embodiment of the present disclosure provides another network access method, as shown in FIG. 9 , including the following steps:
  • the RAN node of the second RAN receives a connection establishment request sent by the UE, where the connection establishment request is sent by the UE when the connection of the first RAN is reserved, and includes the UE accessing the first RAN. Identification information of the network node.
  • the RAN node uses the identifier information to select the network node as a network node that the UE accesses in the second RAN.
  • the network node in the step 902 may also be referred to the related description of the embodiment shown in FIG. 2.
  • the RAN node selects the network node and establishes a connection with the network node to implement the UE accessing the network in the second RAN. Node, no more details here.
  • the network node may include a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, the connection establishment request includes the temporary identification.
  • the RAN may select the core network node as the core network node that the UE accesses in the second RAN, and the implementation manner may refer to the related description in the embodiment shown in FIG. Narration.
  • the foregoing network node may include a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the connection establishment request includes: identifier information of the aggregation node and the temporary identifier, and the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the foregoing temporary identifier and the foregoing identification information may be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the foregoing step 902 may include:
  • the RAN node selects the aggregation node as an aggregation node that the UE accesses in the second RAN, so that the aggregation node manages and associates the UE by using the temporary identifier.
  • Context information and transmitting, by the UE, an interface sent by the UE in the second RAN by using an interface between the aggregation node and the core network node established by the UE in the first RAN.
  • the foregoing selecting an aggregation node may refer to the related description in the embodiment shown in FIG. 2.
  • the RAN node may send a connection establishment request to the aggregation node, where the connection establishment request includes the temporary identifier.
  • the connection establishment request includes the temporary identifier.
  • the foregoing temporary identifier is a first temporary identifier
  • the connection establishment request may include: the first temporary identifier and the second temporary identifier, where the second temporary identifier is a temporary identifier allocated by the UE, and the second temporary identifier includes identifier information of the aggregation node;
  • Step 902 can include:
  • the RAN node selects the network node as a network node that the UE accesses in the second RAN, so that the second temporary identifier is used by the aggregation node to manage and associate Context information of the UE.
  • the foregoing selecting an aggregation node may refer to the related description in the embodiment shown in FIG. 2.
  • the RAN node may send a connection establishment request to the aggregation node, where the connection establishment request includes the foregoing second.
  • the temporary identifier and the first temporary identifier are used to establish a connection with the aggregation node, and details are not described herein again.
  • the RAN node of the second RAN receives the connection establishment request sent by the UE, where the connection establishment request is sent by the UE when the connection of the first RAN is reserved, and includes the The identifier information of the network node that the UE accesses in the first RAN; the RAN node uses the identifier information to select the network node as the network node that the UE accesses in the second RAN. This makes it possible for the UE to reside in the network at the same time in the first RAN and the second RAN.
  • the embodiment of the present disclosure provides another network access method, as shown in FIG. 10, including the following steps:
  • the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the identifier information of the core network node.
  • the core network node sends the temporary identifier to the UE, so that the UE saves the temporary identifier, and the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved.
  • the connection establishment request includes the temporary identifier, and the core network node is selected by the second RAN as a core network node that the UE accesses in the second RAN.
  • the step of the foregoing sending, by the core network node, the temporary identifier to the UE may include:
  • the core network node sends the temporary identifier to the aggregation node, so that the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, where the aggregation node is the UE in the first RAN Establishing an aggregation node connected to the core network node.
  • the foregoing aggregation node and the identifier information can be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the foregoing method may further include the following steps:
  • the core network node receives a message that the aggregation node sends in the second RAN by the interface between the aggregation node and the core network node established by the UE in the first RAN.
  • the temporary identifier may be a first temporary identifier
  • the identifier information of the aggregation node is a second temporary identifier that is allocated by the aggregation node to the UE
  • the second temporary identifier includes an identifier of the aggregation node. information.
  • first temporary identifier and the second temporary identifier may be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the identifier information of the core network node, and the core network node sends the identifier to the UE. Determining a temporary identifier, so that the UE saves the temporary identifier, and the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the temporary identifier, The second RAN selects the core network node as a core network node that the UE accesses in the second RAN. This can enable the UE to reside in the network through the first RAN and the second RAN at the same time.
  • the embodiment of the present disclosure provides another network access method, as shown in FIG. 11 , including the following steps:
  • the aggregation node receives a temporary identifier sent by the core network node, where the temporary identifier is that the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network.
  • the identification information of the node is that the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network.
  • the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, so that the UE establishes a connection between the aggregation node and the core network node in the first RAN.
  • the aggregation node receives a connection establishment request sent by the second RAN, where the connection establishment request is sent when the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved.
  • the aggregation node manages and associates context information of the UE according to the connection establishment request.
  • the foregoing temporary identification, identification information, and connection establishment request may be related to the embodiment shown in FIG. 2, and details are not described herein again.
  • the foregoing temporary identifier is that the UE accesses the first
  • the RAN is allocated by the core network node and sent to the UE by the aggregation node
  • the temporary identifier and the identifier information of the aggregation node are sent to the UE
  • the UE is implemented in the first RAN.
  • Establishing a connection between the aggregation node and the core network node For details, refer to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the foregoing method may further include the following steps:
  • connection establishment request sent by the second RAN may include the identifier information and the temporary identifier
  • step 1104 may include:
  • the aggregation node manages and associates context information of the UE using the temporary identity.
  • the foregoing temporary identifier may be the first temporary identifier, and the foregoing method may further include:
  • the aggregation node allocates a second temporary identifier to the UE, the identifier information of the aggregation node is the second temporary identifier, and the second temporary identifier includes identifier information of the aggregation node.
  • connection establishment request sent by the second RAN includes the first temporary identifier and the second temporary identifier
  • step 1104 may include:
  • the aggregation node manages and associates context information of the UE with the second temporary identifier.
  • first temporary identifier and the second temporary identifier may be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.
  • the aggregation node receives the temporary identifier sent by the core network node, where the temporary identifier is a temporary identifier allocated by the core network node to the UE when the UE accesses the first RAN, where the temporary identifier includes The identification information of the core network node; the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, so as to implement that the UE is built in the first RAN Establishing a connection between the aggregation node and the core network node; the aggregation node receives a connection establishment request sent by the second RAN, where the connection establishment request is that the UE keeps the connection of the first RAN to the second The RAN sends when the connection establishment request is sent; the aggregation node manages and associates the context information of the UE according to the connection establishment request.
  • the UE can be implemented to reside in the network through the first RAN and the second RAN at the same
  • a UE structure is shown, and the UE includes the following modules:
  • the saving module 1201 is configured to save identifier information of the network node that the UE accesses in the first RAN.
  • the sending module 1202 is configured to send a connection establishment request to the second RAN when the UE reserves the connection of the first RAN, where the connection establishment request includes the identifier information of the network node, so that the second RAN is The UE selects the network node as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • the saving module is configured to receive and save the temporary identifier.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node, the saving module is configured to receive and save the temporary identifier and the identifier information of the aggregation node, where the aggregation node establishes, in the first RAN, a connection with the core network node. Aggregate node.
  • the identifier information of the aggregation node is sent by the aggregation node to the UE when the aggregation node receives the temporary identifier sent by the core network node, and the aggregation node uses The temporary identifier manages and associates context information of the UE.
  • the connection establishment request includes: the identifier information of the aggregation node and the temporary identifier, so that the second RAN selects the aggregation node as an aggregation of the UE in the second RAN access a node, and managed by the aggregating node using the temporary identity and associated UE Context information, and transmitting, by the UE, an interface sent by the UE in the second RAN by using an interface between the aggregation node and the core network node established by the UE in the first RAN.
  • the temporary identifier is a first temporary identifier
  • the saving module is configured to receive and save the first temporary identifier and the second temporary identifier, where the second temporary identifier is that the aggregation node is the UE An assigned temporary identifier, and the second temporary identifier includes identification information of the aggregation node.
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, so that the second RAN selects the aggregation node as the UE accesses the second RAN. Aggregating the node, and sending the second temporary identifier to the aggregation node, where the aggregation node uses the second temporary identifier to manage and associate context information of the UE.
  • the UE may be the UE in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the UE in the embodiment shown in FIG. 1 to FIG. 11 may be used in this embodiment.
  • the foregoing UE implements and achieves the same beneficial effects, and details are not described herein again.
  • RAN node structure is illustrated, where the RAN node is a RAN node of a second RAN, and the RAN node includes the following modules:
  • the receiving module 1301 is configured to receive a connection establishment request sent by the UE, where the connection establishment request is sent by the UE when the connection of the first RAN is reserved, and the network node that the UE accesses in the first RAN Identification information.
  • the selecting module 1302 is configured to select, by using the identifier information, the network node as a network node that the UE accesses in the second RAN.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, the connection establishment request includes the temporary identification.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the connection establishment request includes: identifier information of the aggregation node and the temporary identifier, where The aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the selecting module 1302 is configured to use the identifier information of the aggregation node to select the aggregation node as the aggregation node of the UE in the second RAN access, so that the aggregation node uses the temporary Identifying and managing context information of the UE, and transmitting, by the UE, an interface sent by the UE in the second RAN by using an interface between the aggregation node and the core network node established by the first RAN .
  • the temporary identifier is a first temporary identifier
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, where the second temporary identifier is allocated by the aggregation node to the UE a temporary identifier, where the second temporary identifier includes identifier information of the aggregation node;
  • the selecting module 1302 may be configured to use the second temporary identifier to select the network node as a network node that the UE accesses in the second RAN, so that the second temporary identifier is managed by the aggregation node. And context information associated with the UE.
  • the RAN node may be the RAN node in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the RAN node in the embodiment shown in FIG. 1 to FIG. 11 may be implemented by the present embodiment.
  • the above-mentioned RAN node is implemented in the example, and achieves the same beneficial effects, and details are not described herein again.
  • a core network node structure is illustrated, and the core network node includes the following modules:
  • the allocating module 1401 is configured to allocate a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the identifier information of the core network node.
  • the sending module 1402 is configured to send the temporary identifier to the UE, to enable the UE to save the temporary identifier, and send, by the UE, a connection establishment request to the second RAN when the connection of the first RAN is reserved,
  • the connection establishment request includes the temporary identifier, and the core network node is selected by the second RAN as a core network node that the UE accesses in the second RAN.
  • the sending module 1402 is configured to send the temporary identifier to the aggregation node, so that the aggregation node sends the temporary identifier and the identifier information of the aggregation node to the UE, where the aggregation The node establishes, by the UE, an aggregation node connected to the core network node in the first RAN.
  • the core network node may further include:
  • the receiving module 1403 is configured to receive, by the aggregation node, an interface that is sent by the UE between the aggregation node and the core network node that is established by the first RAN, and the UE that is delivered is sent by the second RAN Message.
  • the temporary identifier is a first temporary identifier
  • the identifier information of the aggregation node is a second temporary identifier that is allocated by the aggregation node to the UE
  • the second temporary identifier includes an identifier of the aggregation node. information.
  • the core network node may be the core network node in the embodiment shown in FIG. 1 to FIG. 11, and any implementation manner of the core network node in the embodiment shown in FIG. 1 to FIG.
  • the core network node in the foregoing embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • an aggregation node structure is illustrated, which includes the following modules:
  • the first receiving module 1601 is configured to receive a temporary identifier sent by the core network node, where the temporary identifier is that the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes Identification information of the core network node.
  • the sending module 1602 is configured to send the temporary identifier and the identifier information of the aggregation node to the UE, so that the UE establishes a connection between the aggregation node and the core network node in the first RAN.
  • the second receiving module 1604 is configured to receive a connection establishment request sent by the second RAN, where the connection establishment request is sent when the UE sends a connection establishment request to the second RAN when the connection of the first RAN is reserved. .
  • the management module 1603 is configured to manage and associate context information of the UE according to the connection establishment request.
  • the foregoing aggregation node may further include:
  • the delivery module 1605 is configured to transmit, by the UE, an interface sent by the UE in the second RAN by using an interface between the aggregation node and the core network node established by the first RAN.
  • connection establishment request sent by the second RAN includes the identifier information and the temporary identifier
  • the management module 1603 may be configured to use the temporary identifier to manage and associate context information of the UE.
  • the temporary identifier is a first temporary identifier.
  • the aggregation node may further include:
  • the allocating module 1606 is configured to allocate a second temporary identifier to the UE, where the identifier information of the aggregation node is the second temporary identifier, and the second temporary identifier includes identifier information of the aggregation node.
  • connection establishment request sent by the second RAN includes the first temporary identifier and the second temporary identifier
  • the management module 1603 may be configured to manage and associate a context of the UE by using the second temporary identifier. information.
  • the foregoing aggregation node may be an aggregation node in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the aggregation node in the embodiment shown in FIG. 1 to FIG. 11 may be implemented by the implementation.
  • the above-mentioned aggregation nodes are implemented in the example, and the same beneficial effects are achieved, and details are not described herein again.
  • FIG. 19 there is shown a structure of a UE including: a processor 1900, a transceiver 1910, a memory 1920, a user interface 1930, and a bus interface, wherein:
  • the processor 1900 is configured to read a program in the memory 1920 and perform the following processes:
  • connection establishment request Sending a connection establishment request to the second RAN through the transceiver 1910 while retaining the connection of the first RAN, the connection establishment request including identification information of the network node, so that the second RAN selects the location for the UE
  • the network node acts as a network node that the UE accesses in the second RAN.
  • the transceiver 1910 is configured to receive and transmit data under the control of the processor 1900.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1900 and various circuits of memory represented by memory 1920.
  • the bus architecture can also be used such as peripherals, voltage regulators, and power management circuits. Various other circuits are linked together, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1910 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 in performing operations.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • the information, the identifier information of the network node that is stored by the processor 1900 and stored in the first RAN includes:
  • the temporary identification is received and saved by the transceiver 1910.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network
  • the identification information of the node, the identifier information of the network node that is executed by the processor 1900 and that is in the first RAN may include:
  • the temporary identifier and the identification information of the aggregation node are received and saved by the transceiver 1910, and the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • the identifier information of the aggregation node is sent by the aggregation node to the UE when the aggregation node receives the temporary identifier sent by the core network node, and the aggregation node uses The temporary identifier manages and associates context information of the UE.
  • the connection establishment request includes: the identifier information of the aggregation node and the temporary identifier, so that the second RAN selects the aggregation node as an aggregation of the UE in the second RAN access a node, and the context information used by the aggregation node to manage and associate the UE with the temporary identity, and the aggregation node and the core established by the UE in the first RAN An interface between the heart network nodes, transmitting a message sent by the UE in the second RAN.
  • the temporary identifier is the first temporary identifier
  • the identifier information that is received by the processor 1900 and received by the transceiver 1910 and saved by the transceiver 1910 is:
  • the first temporary identifier and the second temporary identifier are received and saved by the transceiver 1910, where the second temporary identifier is a temporary identifier allocated by the aggregation node for the UE, and the second temporary identifier includes the aggregation The identification information of the node.
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, so that the second RAN selects the aggregation node as the UE accesses the second RAN. Aggregating the node, and sending the second temporary identifier to the aggregation node, where the aggregation node uses the second temporary identifier to manage and associate context information of the UE.
  • the UE may be the UE in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the UE in the embodiment shown in FIG. 1 to FIG. 11 may be used in this embodiment.
  • the foregoing UE implements and achieves the same beneficial effects, and details are not described herein again.
  • a structure of a RAN node which is a RAN node of a second RAN, the RAN node including: a processor 2000, a transceiver 2010, a memory 2020, a user interface 2030, and a bus interface, wherein :
  • the processor 2000 is configured to read a program in the memory 2020 and perform the following processes:
  • a connection establishment request sent by the UE where the connection establishment request is sent by the UE when the connection of the first RAN is reserved, and includes an identifier of the network node that the UE accesses in the first RAN information;
  • the node uses the identification information to select the network node as a network node that the UE accesses in the second RAN.
  • the transceiver 2010 is configured to receive and transmit data under the control of the processor 2000.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2000 and various circuits of memory represented by memory 2020.
  • the bus architecture can also be used for peripheral devices, voltage regulators, and power management circuits. Various other circuits, such as the like, are linked together and are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 2010 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 2000 is responsible for managing the bus architecture and the usual processing, and the memory 2020 can store data used by the processor 2000 in performing operations.
  • the processor 2000 is responsible for managing the bus architecture and the usual processing, and the memory 2020 can store data used by the processor 2000 in performing operations.
  • the network node includes a core network node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes an identifier of the core network node.
  • Information, the connection establishment request includes the temporary identification.
  • the network node includes a core network node and an aggregation node, where the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the connection establishment request includes: identifier information of the aggregation node and the temporary identifier, and the aggregation node is an aggregation node that the UE establishes with the core network node in the first RAN.
  • selecting the network node as the network node that the UE accesses in the second RAN may include:
  • the aggregation node uses the temporary identifier to manage and associate context information of the UE, and And transmitting, by the UE, an interface sent by the UE in the second RAN, by using an interface between the aggregation node and the core network node that is established by the UE in the first RAN.
  • the temporary identifier is a first temporary identifier
  • the connection establishment request includes: the first temporary identifier and the second temporary identifier, where the second temporary identifier is allocated by the aggregation node to the UE a temporary identifier, where the second temporary identifier includes identifier information of the aggregation node;
  • the network node that is accessed by the second RAN may include:
  • the network node Using the second temporary identifier, selecting the network node as the network node that the UE accesses in the second RAN, so that the second temporary identifier is used by the aggregation node to manage and associate context information of the UE. .
  • the RAN node may be the RAN node in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the RAN node in the embodiment shown in FIG. 1 to FIG. 11 may be implemented by the present embodiment.
  • the above-mentioned RAN node is implemented in the example, and achieves the same beneficial effects, and details are not described herein again.
  • the core network node includes a processor 2100, a transceiver 2110, a memory 2120, a user interface 2130, and a bus interface, where:
  • the processor 2100 is configured to read a program in the memory 2120 and perform the following process:
  • the UE When the UE accesses the first RAN, the UE is allocated a temporary identifier, where the temporary identifier includes the identifier information of the core network node;
  • the connection establishment request includes the temporary identifier, and the core network node is selected by the second RAN as a core network node that the UE accesses in the second RAN.
  • the transceiver 2110 is configured to receive and transmit data under the control of the processor 2100.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2100 and various circuits of memory represented by memory 2120.
  • the bus architecture can 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.
  • Transceiver 2110 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 2130 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 2100 is responsible for managing the bus architecture and general processing, and the memory 2120 can store data used by the processor 2100 in performing operations.
  • the processor 2100 sends the temporary identifier to the UE by using the transceiver 2110, including:
  • the RAN establishes an aggregation node that is connected to the core network node.
  • processor 2100 is further configured to:
  • the temporary identifier is a first temporary identifier
  • the identifier information of the aggregation node is a second temporary identifier that is allocated by the aggregation node to the UE
  • the second temporary identifier includes an identifier of the aggregation node. information.
  • the core network node may be the core network node in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the core network node in the embodiment shown in FIG. 1 to FIG. 11 may be used. It is implemented by the above-mentioned core network node in this embodiment, and achieves the same beneficial effects, and details are not described herein again.
  • an aggregation node including: a processor 2200, a transceiver 2210, a memory 2220, a user interface 2230, and a bus interface, wherein:
  • the processor 2200 is configured to read a program in the memory 2220 and perform the following process:
  • a temporary identifier sent by the core network node where the temporary identifier is that the core network node allocates a temporary identifier to the UE when the UE accesses the first RAN, where the temporary identifier includes the core network Identification information of the node;
  • the context information of the UE is managed and associated according to the connection establishment request.
  • the transceiver 2210 is configured to receive and transmit data under the control of the processor 2200.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2200 and various circuits of memory represented by memory 2220.
  • the bus architecture can 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.
  • Transceiver 2210 may be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 2200 is responsible for managing the bus architecture and general processing, and the memory 2220 can store data used by the processor 2200 in performing operations.
  • the processor 2200 is responsible for managing the bus architecture and general processing, and the memory 2220 can store data used by the processor 2200 in performing operations.
  • processor 2200 is also used to control the processor 2200 .
  • connection establishment request sent by the second RAN includes the identifier information and the temporary identifier
  • context information that the processor 2200 performs to manage and associate the UE according to the connection establishment request may include:
  • the temporary information is used to manage and correlate context information of the UE.
  • the temporary identifier is a first temporary identifier
  • the processor 2200 is further configured to:
  • the second temporary identifier is allocated to the UE, the identifier information of the aggregation node is the second temporary identifier, and the second temporary identifier includes identifier information of the aggregation node.
  • connection establishment request sent by the second RAN includes the first temporary identifier and the second temporary identifier
  • context information that the processor 2200 performs to manage and associate the UE according to the connection establishment request may include:
  • the second temporary identifier is used to manage and associate context information of the UE.
  • the foregoing aggregation node may be an aggregation node in the embodiment shown in FIG. 1 to FIG. 11 , and any implementation manner of the aggregation node in the embodiment shown in FIG. 1 to FIG. 11 may be implemented by the implementation.
  • the above-mentioned aggregation nodes are implemented in the example, and the same beneficial effects are achieved, and details are not described herein again.
  • FIG. 23 there is shown a structure of a network access system, the system comprising:
  • the core network node 2301 is configured to allocate a temporary identifier to the UE when the UE 2302 accesses the first RAN, and send the temporary identifier to the UE, where the temporary identifier includes the identifier information of the core network node;
  • the UE 2302 is configured to save the temporary identifier, and send a connection establishment request to the second RAN when the connection of the first RAN is reserved, where the connection establishment request includes the temporary identifier;
  • the RAN node 2303 of the second RAN is configured to select, by using the temporary identifier, the core network node as a core network node that the UE accesses in the second RAN.
  • the core network node 2301, the UE 2302, and the RAN node 2303 may be the core network node, the UE, and the RAN node introduced in the embodiment shown in FIG. 1 to FIG.
  • the embodiment shown can also achieve the same technical effect, and will not be described again here.
  • FIG. 24 there is shown a structure of a network access system, the system comprising:
  • the core network node 2401 is configured to allocate a temporary identifier to the UE when the UE 2402 accesses the first RAN, and send the temporary identifier to the aggregation node, where the temporary identifier includes the identifier information of the core network node.
  • the aggregation node 2403 is configured to send the temporary identifier and the identifier information of the aggregation node to the UE 2402, so as to enable the UE to establish a connection between the aggregation node and the core network node in the first RAN. ;
  • the UE 2402 is configured to save the temporary identifier and the identifier information, and keep the Sending, by the first RAN, a connection establishment request to the second RAN, where the connection establishment request includes the temporary identifier and the identifier information;
  • the RAN node 2404 of the second RAN is configured to use the identifier information to select the aggregation node as an aggregation node that the UE 2402 accesses in the second RAN.
  • the core network node 2401, the UE 2402, the aggregation node 2403, and the RAN node 2404 may be the core network node, the UE, the aggregation node, and the RAN node introduced in the embodiments shown in FIG. 1 to FIG. Referring to the embodiments shown in FIG. 1 to FIG. 22, the same technical effects can be achieved, and details are not described herein again.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules/units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can 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 interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit 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 plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can 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: 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, and the program code can be stored. Medium.

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Abstract

本公开提供一种网络接入方法、相关设备和系统，可包括：UE保存在第一RAN接入的网络节点的标识信息；所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。

Description

一种网络接入方法、相关设备和系统
相关申请的交叉引用
本申请主张在2016年4月1日在中国提交的中国专利申请号No.201610204057.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，特别涉及一种网络接入方法、相关设备和系统。
背景技术
目前移动通信系统中核心网只允许长期演进(LTE，Long Term Evolution)网络的无线接入网(RAN，Radio Access Network)接入，2G/3G网络的RAN不能接入核心网，即用户终端(UE，User Equipment)在同一时间只能选择驻留在LTE网络或者2G/3G网络。然而随着通信技术的发展，未来可能会出现需要UE同时通过两个RAN驻留在网络中的场景，例如：在5G中需要支持UE通过多个接入系统接入到网络的场景。可见，目前UE同时通过两个RAN驻留在网络中是当前急需解决的技术问题。
发明内容
本公开的目的在于提供一种网络接入方法、相关设备和系统，解决了UE同时通过两个RAN驻留在网络的问题。
为了达到上述目的，本公开实施例提供一种网络接入方法，包括：
UE保存在第一RAN接入的网络节点的标识信息；
所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN 时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述UE保存在第一RAN接入的网络节点的标识信息，包括：
所述UE接收并保存所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述UE保存在第一RAN接入的网络节点的标识信息，包括：
所述UE接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
可选的，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述UE接收并保存所述临时标识和所述聚合节点的标识信息，包括：
所述UE接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
本公开实施例还提供一种网络接入方法，包括：
第二RAN的RAN节点接收UE发送的连接建立请求，所述连接建立请 求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，包括：
所述RAN节点使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，包括：
所述RAN节点使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
本公开实施例还提供一种网络接入方法，包括：
核心网节点在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述核心网节点向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
可选的，所述核心网节点向所述UE发送所述临时标识，包括：
所述核心网节点向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述方法还包括：
所述核心网节点接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
本公开实施例还提供一种网络接入方法，包括：
聚合节点接收核心网节点发送的临时标识，所述临时标识是在UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
所述聚合节点接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；
所述聚合节点根据连接建立请求管理和关联UE的上下文信息。
可选的，所述方法还包括：
所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述 核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，所述聚合节点根据连接建立请求管理和关联UE的上下文信息，包括：
所述聚合节点使用所述临时标识管理和关联UE的上下文信息。
可选的，所述临时标识为第一临时标识，所述方法还包括：
所述聚合节点为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，所述聚合节点根据连接建立请求管理和关联UE的上下文信息，包括：
所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
本公开实施例还提供一种UE，包括：
保存模块，用于保存所述UE在第一RAN接入的网络节点的标识信息；
发送模块，用于在所述UE保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
可选的，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述保存模块用于接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
本公开实施例还提供一种RAN节点，所述RAN节点为第二RAN的RAN节点，包括：
接收模块，用于接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
选择模块，用于使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述选择模块用于使用所述聚合节点的标识信息，选择所述聚 合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
所述选择模块用于使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
本公开实施例还提供一种核心网节点，包括：
分配模块，用于在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
发送模块，用于向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
可选的，所述发送模块用于向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述核心网节点还包括：
接收模块，用于接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
本公开实施例还提供一种聚合节点，包括：
第一接收模块，用于接收核心网节点发送的临时标识，所述临时标识是 在UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
发送模块，用于向所述UE发送所述临时标识和所述聚合节点的标识信息，以使所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
第二接收模块，用于接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；
管理模块，用于根据连接建立请求管理和关联UE的上下文信息。
可选的，所述聚合节点还包括：
传递模块，用于通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，所述管理模块用于使用所述临时标识管理和关联UE的上下文信息。
可选的，所述临时标识为第一临时标识，所述聚合节点还包括：
分配模块，用于为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，所述管理模块用于使用所述第二临时标识管理和关联UE的上下文信息。
本实施例提供还一种网络接入系统，包括：
核心网节点，用于在UE接入第一RAN时，为所述UE分配临时标识，并向所述UE发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
所述UE，用于保存所述临时标识，并在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识；
所述第二RAN的RAN节点，用于使用所述临时标识选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
本实施例提供还一种网络接入系统，包括：
核心网节点，用于在UE接入第一RAN时，为所述UE分配临时标识，并向聚合节点发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
所述聚合节点，用于向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
所述UE，用于保存所述临时标识和所述标识信息，并在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识和所述标识信息；
所述第二RAN的RAN节点，用于使用所述标识信息选择所述聚合节点为所述UE在所述第二RAN接入的聚合节点。
本公开的上述技术方案至少具有如下有益效果：
本公开实施例，UE保存在第一RAN接入的网络节点的标识信息；所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，从而可以实现UE同时通过两个RAN驻留在网络中。
附图说明
图1a是本公开实施例提供的网络结构示意图；
图1b是本公开实施例提供的另一网络结构示意图；
图2是本公开实施例提供的一种网络接入方法的流程示意图；
图3是本公开实施例提供的另一种网络接入方法的示意图；
图4是本公开实施例提供的另一种网络接入方法的示意图；
图5是本公开实施例提供的另一种网络接入方法的示意图；
图6是本公开实施例提供的另一种网络接入方法的示意图；
图7是本公开实施例提供的另一种网络接入方法的示意图；
图8是本公开实施例提供的另一种网络接入方法的示意图；
图9是本公开实施例提供的一种网络接入方法的流程示意图；
图10是本公开实施例提供的一种网络接入方法的流程示意图；
图11是本公开实施例提供的一种网络接入方法的流程示意图；
图12是本公开实施例提供的一种UE的结构示意图；
图13是本公开实施例提供的一种RAN节点的结构示意图；
图14是本公开实施例提供的一种核心网节点的结构示意图；
图15是本公开实施例提供的另一种核心网节点的结构示意图；
图16是本公开实施例提供的一种聚合节点的结构示意图；
图17是本公开实施例提供的另一种聚合节点的结构示意图；
图18是本公开实施例提供的另一种聚合节点的结构示意图；
图19是本公开实施例提供的另一种UE的结构示意图；
图20是本公开实施例提供的另一种RAN节点的结构示意图；
图21是本公开实施例提供的另一种核心网节点的结构示意图；
图22是本公开实施例提供的另一种聚合节点的结构示意图；
图23是本公开实施例提供的一种网络接入系统的结构示意图；
图24是本公开实施例提供的另一种网络接入系统的结构示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
参见图1a，图1a是本公开实施例提供的网络结构示意图，如图1a所示，包括UE11、第一RAN节点12、第二RAN节点13和核心网节点14。其中，UE11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，简称PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等终端设备，在本公开实施例中并不限定UE11的具体类型。其中，上述第一RAN节点12可以是第一RAN的RAN节点，例如：基站或者RAN设备，第一RAN可以是5G RAN，在本公开实施例中并不限定第一RAN节点12的具体类型。上述第二RAN节点13可以是第二RAN的RAN节点，例如：基站 或者RAN设备，第二RAN可以是演进的UMTS陆地无线接入网(E-UTRAN，Evolved UMTS Terrestrial Radio Access Network)，需要说明的是，在本公开实施例中并不限定第二RAN节点13的具体类型。核心网节点14可以是核心网控制面节点，在本公开实施例中并不限定核心网节点14的具体类型。
另外，在一些场景中，如图1b所示，上述网络结构还可以包括聚合节点15，其中，聚合节点15连接在核心网节点14与第一RAN节点12之间，以及连接在核心网节点14与第二RAN节点13之间，聚合节点15可以是任何网络侧设备，在本公开实施例中并不限定聚合节点15的具体类型。另外，本实施例中，核心网节点14和聚合节点15可以是存在多个，附图以1个核心网节点14和聚合节点15进行举例说明，但对此不进行限定。
基于图1所示的网络结构，本公开实施例提供一种网络接入方法，如图2所示，包括以下步骤：
201、UE保存在第一RAN接入的网络节点的标识信息。
202、UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
本实施例中，上述网络节点可以是UE在接入上述第一RAN时接入的网络节点。另外，上述网络节点的标识信息可以是在上述UE接入第一RAN时接收并保存的。另外，上述网络节点可以是核心网节点，或者可以是核心网节点和聚合节点。上述UE在保留所述第一RAN的连接时发送连接建立请求，可以理解为UE在通过第一RAN驻留在网络中的同时，向第二RAN发送连接建立请求。这样可以实现UE同时通过第一RAN和第二RAN驻留在网络中。另外，上述连接建立请求可以是信令连接请求，例如：无线资源控制(RRC，Radio Resource Control)连接建立请求，即请求与第二RAN建立RRC连接。需要说明的是，本实施例中的连接请求都可以是信令连接请求，但对此不作限定。这样通过上述连接建立请求可以实现上述第二RAN选择上述网络节点 作为UE在所述第二RAN接入的网络节点，这样可以实现UE在第二RAN接入的网络节点与在第一RAN接入的网络节点是相同的，例如：接入相同的核心网节点。另外，本实施例中，第二RAN也可以理解第二RAN的RAN节点。
可选的，上述网络节点可以包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，步骤201可以包括：
所述UE接收并保存所述临时标识。
上述临时标识可以理解为上述UE在通过第一RAN接入上述核心网节点时，核心网节点为其分配的临时标识，以实现上述UE在第一RAN接入核心网节点。另外，上述UE接入所述第一RAN时可以理解为，上述UE通过第一RAN接入核心网。例如：以第一RAN为5G RAN为例进行举例说明，如图3所示，UE通过步骤301接入到5G RAN并发起注册过程，注册到核心网。核心网控制面节点通过步骤302为UE分配临时标识并包含在返回的NAS消息中，5G RAN节点通过步骤303向UE发送临时标识，以完成RRC过程，UE通过步骤304向5G RAN节点返回RRC响应，且5G RAN通过步骤305向5G核心网控制面节点返回响应消息。通过上述步骤实现上述UE通过5G RAN接入核心网，以及获取核心网节点为其分配的临时标识。
另外，由于上述连接建立请求包括了上述临时标识，从而第二RAN就可以使用该临时标识选择上述核心网节点为UE在所述第二RAN接入的网络节点。例如：第二RAN可以向上述核心网节点发送连接建立请求，该连接建立请求可以包括上述临时标识和/或上述UE的标识，例如：UE的国际移动用户识别码(IMSI，International Mobile Subscriber Identification Number)，从而第二RAN与上述核心网节点建立连接，即实现UE在第二RAN接入核心网。例如：以第二RAN为E-UTRAN对该实施方式进行举例说明，如图4所示，UE通过步骤401向E-UTRAN建立RRC连接，即向E-UTRAN节点发送上 述第一连接建立请求。该步骤中UE根据在接入第一RAN收到的核心网节点为其分配的临时标识，获取核心网节点的标识信息。那么，在步骤401的消息中就可以包含核心网节点的标识信息，或者该消息可以包括UE的标识，UE的标识可以是上述临时标识和/或所述UE的IMSI。E-UTRAN节点接收到上述消息后，就可以使用核心网节点的标识信息或者上述临时标识选择上述核心网节点，并通过步骤402向核心网节点发送连接建立请求，即发送上述第二连接建立请求，其中，该连接建立请求可以是NAS消息，且该连接建立请求可以包括UE的标识或者上述临时标识。核心网节点接收到该连接建立请求时就可以根据UE的标识或者上述临时标识管理和关联UE在第一接入网和第二接入网的上下文信息，并通过步骤403向E-UTRAN节点返回响应消息。通过上述步骤实现UE在第二RAN接入核心网。
可选的，上述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，步骤201可以包括：
所述UE接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
其中，上述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点可以理解为，在UE接入第一RAN，即UE通过第一RAN接入核心网时，连接第一RAN和核心网节点的聚合节点，即上述聚合节点连接在第一RAN与核心网节点的中间。该实施方式中，可以通过聚合标识的标识信息在UE通过第二RAN接入核心网时，由第二RAN选择上述聚合节点作为连接核心网节点的聚合节点。这样可以实现UE在第一RAN和第二RAN连接的聚合节点和核心网节点是相同的。
可选的，上述实施方式中，上述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信 息。
该实施方式中，可以实现核心网节点向聚合节点发送临时标识，聚合节点还可以保存该临时标识，并向UE发送聚合节点的标识信息，以及聚合节点使用上述临时标识管理和关联UE的上下文信息，其中，该上下文信息可以包括UE在第一RAN和第二RAN上下文信息。例如：以第一接入网为5G RAN为例进行举例说明，如图5所示，UE通过步骤501实现通过5G RAN到网络执行注册过程，核心网节点为UE分配临时标识，并通过步骤502的连接建立请求，即第三连接建立请求将该临时标识发送给聚合节点，该连接建立请求可以是NAS消息。聚合节点保存该临时标识，且聚合节点收到核心网节点为UE分配的临时标识后用这一临时标识来关联和管理UE的上下文信息。以及聚合节点还需要将聚合节点的标识信息和上述临时标识发送给UE，聚合节点可以是通过5G RAN节点透传给UE，也可以通过步骤503发送给5G RAN节点，5G RAN节点通过步骤504将聚合节点的标识信息和上述临时标识发送给UE，UE保存聚合节点的标识信息和核心网为其分配的临时标识。另外，UE到核心网节点还可以通过步骤505-507返回响应消息。通过上述步骤实现UE接入第一RAN，并保存上述临时标识和聚合节点的标识信息。
可选的，上述实施方式中，上述连接建立请求可以包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
该实施方式中，第二RAN获取到上述标识信息和临时标识后，就可以使用该标识信息选择上述聚合节点作为UE在第二RAN接入的聚合节点，具体可以是第二RAN选择该聚合节点时，向该聚合节点发送连接建立请求，以与聚合节点建立连接，且该请求可以包括上述临时标识，这样由所述聚合节点 使用所述临时标识管理和关联UE的上下文信息，以及聚合节点还可以通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。其中，上述聚合节点与所述核心网节点之间的接口可以理解为UE在第一RAN接入核心网时，上述核心网节点与聚合节点建立的连接的接口。这样可以实现UE在第二RAN接入网络时，可以直接使用UE在第一RAN中聚合节点与核心网节点之间的接口，从而不需要再建立其他接口，因为UE在第一RAN和第二RAN接入的聚合节点和核心网节点是相同的，从而可以节省网络资源。例如：以第二RAN为E-UTRAN进行举例说明，如图6所示，UE通过步骤601在E-UTRAN系统建立信令连接，即UE向E-UTRAN节点发送第一连接建立请求，其中，该连接建立请求可以RRC连接建立请求，即RRC消息，该消息中可以包括UE在接入第一RAN时保存的上述临时标识和聚合节点的标识信息。E-UTRAN节点就可以通过步骤602使用聚合节点的标识信息选择聚合节点，以及通过步骤603向该聚合节点发起连接建立，即向聚合节点发送连接建立请求，该连接建立请求包括核心网节点为UE分配的临时标识。聚合节点还可以通过步骤604根据核心网节点为UE分配的临时标识获取UE的上下文信息，其中，这里的上下文信息可以是UE在所述第一RAN和所述第二RAN的上下文信息，并通过在UE接入第一RAN时建立的聚合节点到核心网控制面节点建立的连接，将消息传递给核心网节点，例如：将获取的上下文信息发送给核心网节点，或者将UE在所述第二RAN发送的信息传递给核心网节点。以及聚合节点还可以通过步骤605向核心网节点发送连接建立。且核心网节点到UE之间还可以通过步骤606-608返回响应消息，通过上述步骤实现UE接入第二RAN。
该实施方式中，可以通过核心网节点为UE分配临时标识，以及聚合节点向UE发送聚合节点的标识信息，实现在UE同时驻留第一RAN和第二RAN时为UE选择相同的核心网节点和相同的聚合节点，从而有效对UE的 信息进行管理。
可选的，上述临时标识可以为第一临时标识，步骤201可以包括：
所述UE接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
其中，上述第二临时标识可以是在UE接入第一RAN时，聚合节点接收到核心网节点发送的上述第一临时标识时，为上述UE分配的临时标识。且第一临时标识和第二临时标识可以是聚合节点向上述UE发送的。例如：以第一接入网为5G RAN为例进行举例说明，如图7所示，UE通过步骤701实现通过5G RAN到网络执行注册过程，核心网节点为UE分配临时标识(第一临时标识)，并通过步骤702的连接建立请求，即通过该连接建立请求将该临时标识发送给聚合节点，该连接建立请求可以是NAS消息。聚合节点为UE分配临时标识(第二临时标识)，聚合节点为UE分配的临时标识中包含聚合节点的标识信息。聚合节点还可以使用这一临时标识管理和关联UE的上下文。以及聚合节点可以将为UE分配的临时标识传递给UE，以及核心网节点为UE分配的临时信息传递给UE。其中，这两个临时标识聚合节可以是通过5G RAN节点透传给UE，也可以通过步骤703发送给5G RAN节点。5G RAN节点再通过步骤704将这两个临时标识发送给UE。UE保存聚合节点为其分配的临时标识和核心网节点为其分配的临时标识。以及UE到核心网节点还可以通过步骤705-707返回响应消息，通过上述步骤实现UE接入第一RAN，以及保存第一临时标识和第二临时标识。
可选的，上述实施方式中，上述连接建立请求可以包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
该实施方式中，第二RAN获取到上述第一临时标识和第二临时标识后， 就可以使用第二临时标识选择上述聚合节点作为UE在第二RAN接入的聚合节点，具体可以是第二RAN选择该聚合节点时，向该聚合节点发送连接建立请求，以与聚合节点建立连接，且该请求可以包括上述第一临时标识和第二临时标识，这样由所述聚合节点使用所述第一临时标识管理和关联UE的上下文信息。以及聚合节点还可以使用上述第一临时标识，通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。例如：以第二RAN为E-UTRAN进行举例说明，如图8所示，UE通过步骤801在E-UTRAN系统建立连接，即UE向E-UTRAN节点发送第一连接建立请求，其中，该连接建立请求可以为RRC连接建立请求，即RRC消息，该消息中可以包括UE在接入第一RAN时保存的核心网节点为其分配的临时标识(第一临时标识)和聚合节点为其分配的临时标识(第二临时标识)。E-UTRAN节点通过步骤802根据聚合节点为UE分配的临时标识获取UE在第一RAN驻留的聚合节点，以及E-UTRAN节点通过步骤803向聚合节点发送信令连接建立消息，即向聚合节点发送第二连接建立请求，该消息中包含聚合节点为UE分配的临时标识和核心网节点为UE分配的临时标识。聚合节点通过步骤804根据UE的临时标识管理和关联UE的上下文信息，并通过在UE接入第一RAN时建立的聚合节点到核心网控制面节点建立的连接，将消息传递给核心网节点。以及聚合节点通过步骤805向核心网控制面节点发送信令连接建立。且核心网节点到UE之间还可以通过步骤806-808返回响应消息，通过上述步骤实现UE在第二RAN接入核心网，且UE在第一RAN和第二RAN接入的聚合节点和核心网节点是相同的。
需要说明的是，本实施例中，上述介绍的多种可选的实施方式可以相互结合实现，以可以单独实现，对此不作限定。
本实施例，UE保存在第一RAN接入的网络节点的标识信息；所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建 立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，从而可以实现UE同时通过两个RAN驻留在网络中。
基于图1所示的网络结构，本公开实施例提供另一种网络接入方法，如图9所示，包括以下步骤：
901、第二RAN的RAN节点接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息。
902、RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
其中，上述网络节点和标识信息也可以参见图2所示的实施例中相关说明。另外，步骤902中选择上述网络节点也可以参见图2所示的实施例的相关说明例如：RAN节点选择上述网络节点，并与该网络节点建立连接，以实现UE在第二RAN接入上述网络节点，此处不再赘述。
可选的，上述网络节点可以包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
该实施方式中，可以实现RAN选择上述核心网节点作为上述UE在所述第二RAN接入的核心网节点，且该实施方式可以参见图2所示的实施例中相关说明，此处不再赘述。
可选的，上述网络节点可以包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
该实施方式中，上述临时标识和上述标识信息可以参见图2所示的实施例中相关说明，此处不再赘述。
可选的，上述实施方式中，上述步骤902可以包括：
所述RAN节点使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
该实施方式中，上述选择聚合节点可以参见图2所示的实施例中相关说明，例如：RAN节点选择上述聚合节点时，可以向该聚合节点发送连接建立请求，该连接建立请求包括上述临时标识，以与聚合节点建立连接，此处不再赘述。
可选的，上述实施方式中，上述临时标识为第一临时标识，所述连接建立请求可以包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
步骤902可以包括：
所述RAN节点使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
该实施方式中，上述选择聚合节点可以参见图2所示的实施例中相关说明，例如：RAN节点选择上述聚合节点时，可以向该聚合节点发送连接建立请求，该连接建立请求包括上述第二临时标识和第一临时标识，以与聚合节点建立连接，此处不再赘述。
本实施例中，第二RAN的RAN节点接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述 UE在所述第一RAN接入的网络节点的标识信息；所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。这样可以实现UE同时在第一RAN和第二RAN驻留在网络中。
基于图1所示的网络结构，本公开实施例提供另一种网络接入方法，如图10所示，包括以下步骤：
1001、核心网节点在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息。
1002、核心网节点向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
其中，关于临时标识和UE选择上述核心网节点可以参见图2所示的实施例中相关说明，此处不再赘述。
可选的，上述核心网节点向所述UE发送所述临时标识的步骤，可以包括：
核心网节点向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
该实施方式中，上述聚合节点和标识信息可以参见图2所示实施例中相关说明，此处不再赘述。
可选的，上述方法还可以包括如下步骤：
核心网节点接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
该实施方式中，上述接口和传递的消息可以参见图2所示的实施例中相关说明，此处不再赘述。
可选的，上述临时标识可以为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
该实施方式中，上述第一临时标识和第二临时标识可以参见图2所示的实施例中相关说明，此处不再赘述。
本实施例中，核心网节点在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；所述核心网节点向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。这样可以实现UE同时通过第一RAN和第二RAN驻留在网络中。
基于图1所示的网络结构，本公开实施例提供另一种网络接入方法，如图11所示，包括以下步骤：
1101、聚合节点接收核心网节点发送的临时标识，所述临时标识是在UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息。
1102、聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接。
1103、聚合节点接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的。
1104、聚合节点根据连接建立请求管理和关联UE的上下文信息。
上述临时标识、标识信息和连接建立请求可以参见图2所示的实施例中相关，此处不再赘述。另外，需要说明的是，上述临时标识是UE接入第一 RAN时核心网节点为其分配的，并通过聚合节点发送给UE的，所以当向所述UE发送所述临时标识和所述聚合节点的标识信息，就实现了上述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接。具体可以参见图2所示实施例中相关说明，此处不再赘述。
可选的，上述方法还可以包括如下步骤：
所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
该实施方式中，上述接口和传递可以参见图2所示的实施例中相关说明，此处不再赘述。
可选的，上述第二RAN发送的连接建立请求可以包括所述标识信息和所述临时标识，步骤1104可以包括：
所述聚合节点使用所述临时标识管理和关联UE的上下文信息。
其中，上述管理和关联UE的上下文信息可以参见图2所示实施例中相关说明，此处不再赘述。
可选的，上述临时标识可以为第一临时标识，上述方法还可以包括：
所述聚合节点为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
可选的，上述实施方式中，上述所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，步骤1104可以包括：
所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
该实施方式中，上述第一临时标识和第二临时标识可以参见图2所示的实施例中相关说明，此处不再赘述。
本实施例中，聚合节点接收核心网节点发送的临时标识，所述临时标识是在UE接入所述第一RAN时所述核心网节点为所述UE分配的临时标识，所述临时标识包括所述核心网节点的标识信息；聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建 立所述聚合节点与所述核心网节点的连接；聚合节点接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；聚合节点根据连接建立请求管理和关联UE的上下文信息。从而可以实现UE同时通过第一RAN和第二RAN驻留在网络中。
参见图12，图中示出一种UE结构，该UE包括如下模块：
保存模块1201，用于保存所述UE在第一RAN接入的网络节点的标识信息。
发送模块1202，用于在所述UE保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
可选的，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的 上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述保存模块用于接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述UE可以为图1-图11所示的实施例中的UE，图1-图11所示实施例中UE的任意实施方式都可以被本实施例中的上述UE所实现，以及达到相同的有益效果，此处不再赘述。
参见图13，图中示出一种RAN节点结构，该RAN节点为第二RAN的RAN节点，该RAN节点包括如下模块：
接收模块1301，用于接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息。
选择模块1302，用于使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所 述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，选择模块1302可以用于使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
选择模块1302可以用于使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述RAN节点可以为图1-图11所示的实施例中的RAN节点，图1-图11所示实施例中RAN节点的任意实施方式都可以被本实施例中的上述RAN节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图14，图中示出一种核心网节点结构，该核心网节点包括如下模块：
分配模块1401，用于在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息。
发送模块1402，用于向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
可选的，发送模块1402用于向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合 节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，如图15所示，所述核心网节点还可以包括：
接收模块1403，用于接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
需要说明的是，本实施例中上述核心网节点可以图1-图11所示的实施例中的核心网节点，图1-图11所示实施例中核心网节点的任意实施方式都可以被本实施例中的上述核心网节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图16，图中示出一种聚合节点结构，该聚合节点包括如下模块：
第一接收模块1601，用于接收核心网节点发送的临时标识，所述临时标识是在UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息。
发送模块1602，用于向所述UE发送所述临时标识和所述聚合节点的标识信息，以使所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接。
第二接收模块1604，用于接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的。
管理模块1603，用于根据连接建立请求管理和关联UE的上下文信息。
可选的，如图17所示，上述聚合节点还可以包括：
传递模块1605，用于通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，管理模块1603可以用于使用所述临时标识管理和关联UE的上下文信息。
可选的，所述临时标识为第一临时标识，如图18所示，所述聚合节点还可以包括：
分配模块1606，用于为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，所述管理模块1603可以用于使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述聚合节点可以为图1-图11所示的实施例中的聚合节点，图1-图11所示实施例中聚合节点的任意实施方式都可以被本实施例中的上述聚合节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图19，图中示出一种UE的结构，该UE包括：处理器1900、收发机1910、存储器1920、用户接口1930和总线接口，其中：
处理器1900，用于读取存储器1920中的程序，执行下列过程：
保存在第一RAN接入的网络节点的标识信息；
在保留所述第一RAN的连接时通过收发机1910向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
其中，收发机1910，用于在处理器1900的控制下接收和发送数据。
在图19中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1900代表的一个或多个处理器和存储器1920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类 的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1910可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1930还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1900负责管理总线架构和通常的处理，存储器1920可以存储处理器1900在执行操作时所使用的数据。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述处理器1900执行的保存在第一RAN驻留的网络节点的标识信息，包括：
通过收发机1910接收并保存所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，处理器1900执行的在第一RAN驻留的网络节点的标识信息，可以包括：
通过收发机1910接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
可选的，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核 心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，处理器1900执行的通过收发机1910接收并保存所述临时标识和所述聚合节点的标识信息，包括：
通过收发机1910接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述UE可以为图1-图11所示的实施例中的UE，图1-图11所示实施例中UE的任意实施方式都可以被本实施例中的上述UE所实现，以及达到相同的有益效果，此处不再赘述。
参见图20，图中示出一种RAN节点的结构，该RAN节点是第二RAN的RAN节点，该RAN节点包括：处理器2000、收发机2010、存储器2020、用户接口2030和总线接口，其中：
处理器2000，用于读取存储器2020中的程序，执行下列过程：
通过收发机2010接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
收发机2010，用于在处理器2000的控制下接收和发送数据。
其中，在图20中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2000代表的一个或多个处理器和存储器2020代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路 等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2010可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器2000负责管理总线架构和通常的处理，存储器2020可以存储处理器2000在执行操作时所使用的数据。
处理器2000负责管理总线架构和通常的处理，存储器2020可以存储处理器2000在执行操作时所使用的数据。
可选的，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
可选的，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，处理器2000执行的使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，可以包括：
使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
处理器2000执行的使用所述标识信息，选择所述网络节点作为所述UE 在所述第二RAN接入的网络节点，可以包括：
使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述RAN节点可以为图1-图11所示的实施例中的RAN节点，图1-图11所示实施例中RAN节点的任意实施方式都可以被本实施例中的上述RAN节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图21，图中示出一种核心网节点的结构，该核心网节点包括：处理器2100、收发机2110、存储器2120、用户接口2130和总线接口，其中：
处理器2100，用于读取存储器2120中的程序，执行下列过程：
在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
通过收发机2110向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
其中，收发机2110，用于在处理器2100的控制下接收和发送数据。
在图21中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2100代表的一个或多个处理器和存储器2120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2110可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2130还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2100负责管理总线架构和通常的处理，存储器2120可以存储处理器2100在执行操作时所使用的数据。
可选的，处理器2100通过收发机2110向所述UE发送所述临时标识，包括：
通过收发机2110向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
可选的，处理器2100还用于：
通过收发机2110接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
可选的，所述临时标识为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
需要说明的是，本实施例中上述核心网节点可以为图1-图11所示的实施例中的核心网节点，图1-图11所示实施例中核心网节点的任意实施方式都可以被本实施例中的上述核心网节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图22，图中示出一种聚合节点的结构，该聚合节点包括：处理器2200、收发机2210、存储器2220、用户接口2230和总线接口，其中：
处理器2200，用于读取存储器2220中的程序，执行下列过程：
通过收发机2210接收核心网节点发送的临时标识，所述临时标识是在UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
通过收发机2210向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的 连接；
通过收发机2210接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；
根据连接建立请求管理和关联UE的上下文信息。
收发机2210，用于在处理器2200的控制下接收和发送数据。
其中，在图22中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2200代表的一个或多个处理器和存储器2220代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机2210可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器2200负责管理总线架构和通常的处理，存储器2220可以存储处理器2200在执行操作时所使用的数据。
处理器2200负责管理总线架构和通常的处理，存储器2220可以存储处理器2200在执行操作时所使用的数据。
可选的，处理器2200还用于
通过收发机2210使用所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
可选的，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，处理器2200执行的根据连接建立请求管理和关联UE的上下文信息，可以包括：
使用所述临时标识管理和关联UE的上下文信息。
可选的，所述临时标识为第一临时标识，处理器2200还用于：
为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
可选的，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，处理器2200执行的根据连接建立请求管理和关联UE的上下文信息，可以包括：
使用所述第二临时标识管理和关联UE的上下文信息。
需要说明的是，本实施例中上述聚合节点可以为图1-图11所示的实施例中的聚合节点，图1-图11所示实施例中聚合节点的任意实施方式都可以被本实施例中的上述聚合节点所实现，以及达到相同的有益效果，此处不再赘述。
参见图23，图中示出一种网络接入系统的结构，该系统包括：
核心网节点2301，用于在UE 2302接入第一RAN时，为所述UE分配临时标识，并向所述UE发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
UE 2302，用于保存所述临时标识，并在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识；
第二RAN的RAN节点2303，用于使用所述临时标识选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
本实施例中，核心网节点2301、UE 2302和RAN节点2303可以是图1-图22所示实施例中介绍的核心网节点、UE和RAN节点，其实施方式都可以参见图1-图22所示的实施方式，也能达到相同的技术效果，在此不再赘述。
参见图24，图中示出一种网络接入系统的结构，该系统包括：
核心网节点2401，用于在UE 2402接入第一RAN时，为所述UE分配临时标识，并向聚合节点发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
所述聚合节点2403，用于向所述UE2402发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
所述UE 2402，用于保存所述临时标识和所述标识信息，并在保留所述 第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识和所述标识信息；
所述第二RAN的RAN节点2404，用于使用所述标识信息选择所述聚合节点为所述UE 2402在所述第二RAN接入的聚合节点。
本实施例中，核心网节点2401、UE 2402、聚合节点2403和RAN节点2404可以是图1-图22所示实施例中介绍的核心网节点、UE、聚合节点和RAN节点，其实施方式都可以参见图1-图22所示的实施方式，也能达到相同的技术效果，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露方法和装置，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块/单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述收发方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (48)

  1. 一种网络接入方法，包括：
    UE保存在第一接入网RAN接入的网络节点的标识信息；
    所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
  2. 如权利要求1所述的方法，其中，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述UE保存在第一RAN接入的网络节点的标识信息，包括：
    所述UE接收并保存所述临时标识。
  3. 如权利要求1所述的方法，其中，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述UE保存在第一RAN接入的网络节点的标识信息，包括：
    所述UE接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  4. 如权利要求3所述的方法，其中，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
  5. 如权利要求3或4所述的方法，其中，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  6. 如权利要求3所述的方法，其中，所述临时标识为第一临时标识，所 述UE接收并保存所述临时标识和所述聚合节点的标识信息，包括：
    所述UE接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
  7. 如权利要求6所述的方法，其中，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
  8. 一种网络接入方法，包括：
    第二RAN的RAN节点接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
    所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
  9. 如权利要求8所述的方法，其中，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
  10. 如权利要求8所述的方法，其中，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  11. 如权利要求10所述的方法，其中，所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，包括：
    所述RAN节点使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标 识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  12. 如权利要求10所述的方法，其中，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
    所述RAN节点使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，包括：
    所述RAN节点使用所述第二临时标识，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
  13. 一种网络接入方法，包括：
    核心网节点在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述核心网节点向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
  14. 如权利要求13所述的方法，其中，所述核心网节点向所述UE发送所述临时标识，包括：
    所述核心网节点向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  15. 如权利要求14所述的方法，其中，所述方法还包括：
    所述核心网节点接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
  16. 如权利要求14或15所述的方法，其中，所述临时标识为第一临时 标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
  17. 一种网络接入方法，包括：
    聚合节点接收核心网节点发送的临时标识，所述临时标识是在UE接入第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
    所述聚合节点接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；
    所述聚合节点根据连接建立请求管理和关联UE的上下文信息。
  18. 如权利要求17所述的方法，其中，所述方法还包括：
    所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  19. 如权利要求17或18所述的方法，其中，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，所述聚合节点根据连接建立请求管理和关联UE的上下文信息，包括：
    所述聚合节点使用所述临时标识管理和关联UE的上下文信息。
  20. 如权利要求17或18所述的方法，其中，所述临时标识为第一临时标识，所述方法还包括：
    所述聚合节点为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
  21. 如权利要求20所述的方法，其中，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，所述聚合节点根据连接建立请求管理和关联UE的上下文信息，包括：
    所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
  22. 一种UE，包括：
    保存模块，用于保存所述UE在第一RAN接入的网络节点的标识信息；
    发送模块，用于在所述UE保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
  23. 如权利要求22所述的UE，其中，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识。
  24. 如权利要求22所述的UE，其中，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述保存模块用于接收并保存所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  25. 如权利要求24所述的UE，其中，所述聚合节点的标识信息是，所述聚合节点接收到所述核心网节点发送的所述临时标识时，由所述聚合节点向所述UE发送的，且所述聚合节点使用所述临时标识管理和关联所述UE的上下文信息。
  26. 如权利要求24或25所述的UE，其中，所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，以使所述第二RAN选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以及由所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  27. 如权利要求24所述的UE，其中，所述临时标识为第一临时标识，所述保存模块用于接收并保存所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息。
  28. 如权利要求27所述的UE，其中，所述连接建立请求包括：所述第一临时标识和所述第二临时标识，以使所述第二RAN选择所述聚合节点作为 所述UE在所述第二RAN接入的聚合节点，并向所述聚合节点发送所述第二临时标识，由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
  29. 一种RAN节点，所述RAN节点为第二RAN的RAN节点，包括：
    接收模块，用于接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
    选择模块，用于使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点。
  30. 如权利要求29所述的RAN节点，其中，所述网络节点包括核心网节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息，所述连接建立请求包括所述临时标识。
  31. 如权利要求29所述的RAN节点，其中，所述网络节点包括核心网节点和聚合节点，在所述UE接入所述第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述连接建立请求包括：所述聚合节点的标识信息和所述临时标识，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  32. 如权利要求31所述的RAN节点，其中，所述选择模块用于使用所述聚合节点的标识信息，选择所述聚合节点作为所述UE在所述第二RAN接入的聚合节点，以使所述聚合节点使用所述临时标识管理和关联UE的上下文信息，并通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  33. 如权利要求31所述的RAN节点，其中，所述临时标识为第一临时标识，所述连接建立请求包括：所述第一临时标识和第二临时标识，所述第二临时标识为所述聚合节点为所述UE分配的临时标识，且所述第二临时标识包括所述聚合节点的标识信息；
    所述选择模块用于使用所述第二临时标识，选择所述网络节点作为所述 UE在所述第二RAN接入的网络节点，以使由所述聚合节点使用所述第二临时标识管理和关联UE的上下文信息。
  34. 一种核心网节点，包括：
    分配模块，用于在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    发送模块，用于向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
  35. 如权利要求34所述的核心网节点，其中，所述发送模块用于向聚合节点发送所述临时标识，以使所述聚合节点向所述UE发送所述临时标识和所述聚合节点的标识信息，所述聚合节点为所述UE在所述第一RAN建立与所述核心网节点连接的聚合节点。
  36. 如权利要求35所述的核心网节点，其中，所述核心网节点还包括：
    接收模块，用于接收所述聚合节点通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递的所述UE在所述第二RAN发送的消息。
  37. 如权利要求34或35所述的核心网节点，其中，所述临时标识为第一临时标识，所述聚合节点的标识信息为所述聚合节点为所述UE分配的第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
  38. 一种聚合节点，包括：
    第一接收模块，用于接收核心网节点发送的临时标识，所述临时标识是在UE接入第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    发送模块，用于向所述UE发送所述临时标识和所述聚合节点的标识信息，以使所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
    第二接收模块，用于接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建 立请求时发送的；
    管理模块，用于根据连接建立请求管理和关联UE的上下文信息。
  39. 如权利要求38所述的聚合节点，其中，所述聚合节点还包括：
    传递模块，用于通过所述UE在所述第一RAN建立的所述聚合节点与所述核心网节点之间的接口，传递所述UE在所述第二RAN发送的消息。
  40. 如权利要求38或39所述的聚合节点，其中，所述第二RAN发送的连接建立请求包括所述标识信息和所述临时标识，所述管理模块用于使用所述临时标识管理和关联UE的上下文信息。
  41. 如权利要求38或39所述的聚合节点，其中，所述临时标识为第一临时标识，所述聚合节点还包括：
    分配模块，用于为所述UE分配第二临时标识，所述聚合节点的标识信息为所述第二临时标识，所述第二临时标识包括所述聚合节点的标识信息。
  42. 如权利要求41所述的聚合节点，其中，所述第二RAN发送的连接建立请求包括所述第一临时标识和所述第二临时标识，所述管理模块用于使用所述第二临时标识管理和关联UE的上下文信息。
  43. 一种网络接入系统，包括：
    核心网节点，用于在UE接入第一RAN时，为所述UE分配临时标识，并向所述UE发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述UE，用于保存所述临时标识，并在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识；
    所述第二RAN的RAN节点，用于使用所述临时标识选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点。
  44. 一种网络接入系统，包括：
    核心网节点，用于在UE接入第一RAN时，为所述UE分配临时标识，并向聚合节点发送所述临时标识，所述临时标识包括所述核心网节点的标识信息；
    所述聚合节点，用于向所述UE发送所述临时标识和所述聚合节点的标识信息，以实现所述UE在所述第一RAN建立所述聚合节点与所述核心网节 点的连接；
    所述UE，用于保存所述临时标识和所述标识信息，并在保留所述第一RAN的连接时向第二RAN发送连接建立请求，所述连接建立请求包括所述临时标识和所述标识信息；
    所述第二RAN的RAN节点，用于使用所述标识信息选择所述聚合节点为所述UE在所述第二RAN接入的聚合节点。
  45. 一种UE，包括：处理器、收发机、存储器；其中，所述处理器用于读取所述存储器中的程序，执行下列过程：
    保存在第一RAN接入的网络节点的标识信息；
    在保留所述第一RAN的连接时通过所述收发机向第二RAN发送连接建立请求，所述连接建立请求包括所述网络节点的标识信息，以使所述第二RAN为所述UE选择所述网络节点作为所述UE在所述第二RAN接入的网络节点；
    所述收发机用于在所述处理器的控制下接收和发送数据。
  46. 一种RAN节点，所述RAN节点为第二RAN的RAN节点，包括：处理器、收发机、存储器；其中，所述处理器用于读取所述存储器中的程序，执行下列过程：
    通过所述收发机接收UE发送的连接建立请求，所述连接建立请求是所述UE在保留第一RAN的连接时发送的，且包括所述UE在所述第一RAN接入的网络节点的标识信息；
    使用所述标识信息，选择所述网络节点作为所述UE在所述第二RAN接入的网络节点；
    所述收发机用于在所述处理器的控制下接收和发送数据。
  47. 一种核心网节点，包括：处理器、收发机、存储器；其中，所述处理器用于读取所述存储器中的程序，执行下列过程：
    在UE接入第一RAN时，为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    通过收发机向所述UE发送所述临时标识，以使所述UE保存所述临时标识，由所述UE在保留所述第一RAN的连接时向第二RAN发送连接建立请 求，所述连接建立请求包括所述临时标识，由所述第二RAN选择所述核心网节点为所述UE在所述第二RAN接入的核心网节点；
    所述收发机用于在所述处理器的控制下接收和发送数据。
  48. 一种聚合节点，包括：处理器、收发机、存储器；其中，所述处理器用于读取所述存储器中的程序，执行下列过程：
    通过所述收发机接收核心网节点发送的临时标识，所述临时标识是在UE接入第一RAN时所述核心网节点为所述UE分配临时标识，所述临时标识包括所述核心网节点的标识信息；
    通过所述收发机向所述UE发送所述临时标识和所述聚合节点的标识信息，以使所述UE在所述第一RAN建立所述聚合节点与所述核心网节点的连接；
    通过所述收发机接收第二RAN发送的连接建立请求，所述连接建立请求是所述UE在保留所述第一RAN的连接时向所述第二RAN发送连接建立请求时发送的；
    根据连接建立请求管理和关联UE的上下文信息；
    所述收发机用于在所述处理器的控制下接收和发送数据。
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CN107295610B (zh) 2019-12-20
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US20190082364A1 (en) 2019-03-14
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JP2019510435A (ja) 2019-04-11
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