CN107734592B - core network selection method, access network entity, UE and system - Google Patents
core network selection method, access network entity, UE and system Download PDFInfo
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- CN107734592B CN107734592B CN201610663649.0A CN201610663649A CN107734592B CN 107734592 B CN107734592 B CN 107734592B CN 201610663649 A CN201610663649 A CN 201610663649A CN 107734592 B CN107734592 B CN 107734592B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- 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
Abstract
the invention provides a core network selection method, an access network entity, UE and a system, wherein the method comprises the following steps: user Equipment (UE) initiates an initial access process message to a network, wherein the network comprises at least one access network entity, the initial access process message carries core network type selection information, and the core network type selection information is used for the access network entity to determine the core network type to which the UE needs to be accessed. In this way, the UE can send the corresponding NAS message version according to the core network type that needs to be accessed, and the access network entity can also determine the core network type that the UE needs to be accessed according to the access request and route the access request of the UE to the corresponding core network, thereby avoiding UE access abnormality.
Description
Technical Field
the present invention relates to the field of communications technologies, and in particular, to a core network selection method, an access network entity, a user equipment UE, and a system.
background
with the rapid development of communication technologies, the mobile communication technologies are updated more and more rapidly, and different generations of mobile communication technologies may have different types of core networks, in which case one access network entity may be connected to one or more different types of core networks. If the UE does not know the core network type connected to the Access network entity before accessing the Access network entity, the UE may Access abnormally due to an incorrect version of a Non Access Stratum (NAS) message used when the UE accesses the UE. In addition, for an access network entity simultaneously connected with a plurality of different types of core networks, if it is unclear the type of core network selected when the UE initiates initial access, the initial access message of the UE may be routed to the wrong core network. Therefore, the UE or the access network entity may not determine the core network type that the UE needs to access, which may easily cause UE access abnormality.
disclosure of Invention
the invention aims to provide a core network selection method, an access network entity, UE and a system, so as to solve the problem that the UE or the access network entity is easy to cause abnormal UE access because the type of the core network to which the UE needs to be accessed is uncertain.
In order to achieve the above object, an embodiment of the present invention provides a core network selection method, including:
User Equipment (UE) initiates an initial access process message to a network, wherein the network comprises at least one access network entity, the initial access process message carries core network type selection information, and the core network type selection information is used for the access network entity to determine the core network type to which the UE needs to be accessed.
Optionally, before the UE initiates the initial access procedure message to the network, the method includes:
And the UE acquires the core network type information connected with the access network entity.
Optionally, the obtaining, by the UE, core network type information of an access network entity connection includes:
The UE initiates a system information access request to the network;
and the UE receives the core network type information of the access network entity connection sent by the access network entity in the network according to the access system information request.
optionally, the obtaining, by the UE, core network type information of an access network entity connection includes:
and the UE acquires the core network type information connected with the access network entity through system information.
optionally, the obtaining, by the UE, the core network type information connected to the access network entity through a system message includes:
the UE acquires the core network type information connected with the access network entity according to the system information broadcast by the access network entity; or
And the UE acquires the core network type information connected with the access network entity according to the system information acquired in the access process.
optionally, the UE initiates an initial access procedure message to the network, including:
the UE determines the type of a core network to which the UE needs to access;
The UE determines a target version of a connection establishment completion message corresponding to a core network type to which the UE needs to access; and
and the UE transmits the connection establishment completion message of the target version to a network.
Optionally, the connection setup complete message is a radio resource control, RRC, connection setup complete message.
Optionally, the UE initiates an initial access procedure message to the network, including:
The UE determines the type of a core network to which the UE needs to access;
the UE determines NAS node selection information corresponding to the core network type to which the UE needs to access;
and the UE initiates an initial access process message carrying the NAS node selection information to a network.
the embodiment of the invention also provides a core network selection method, which comprises the following steps:
An access network entity in a network receives an initial access process message transmitted by UE, wherein the initial access process message carries core network type selection information;
and the access network entity selects the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information.
Optionally, before the access network entity receives the initial access procedure message transmitted by the UE from the network, the method includes:
and the access network entity transmits the core network type information connected with the access network entity to the network.
Optionally, the transmitting, by the access network entity, the core network type information to which the access network entity is connected to the network includes:
And the access network entity broadcasts the core network type information connected with the access network entity.
optionally, the transmitting, by the access network entity, the core network type information to which the access network entity is connected to the network includes:
the access network entity receives an access system information request transmitted by the UE in the network;
and the access network entity transmits the core network type information connected with the access network entity to the network according to the access system information request.
Optionally, the initial access procedure message is a connection establishment completion message of a target version;
The access network entity selects the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information, and the method comprises the following steps:
and the access network entity selects the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
Optionally, the connection setup complete message is an RRC connection setup complete message.
Optionally, the selecting, by the access network entity, a core network of a core network type to which the UE needs to access for the UE according to the core network type selection information includes:
The access network entity judges whether the access network entity is connected with a core network of the core network type which the UE needs to access;
and if the access network entity is not connected with the core network of the core network type which the UE needs to access, the access network entity rejects the connection request of the UE.
optionally, the initial access procedure message carries non-access stratum NAS node selection information;
The access network entity selects a core network of a core network type to which the UE needs to access for the UE according to the initial access process message, and the method comprises the following steps:
and the access network entity selects an NAS node in the core network type to which the UE needs to access for the UE according to the initial access process message.
An embodiment of the present invention further provides a UE, including:
a transmission module, configured to initiate an initial access procedure message to a network, where the network includes at least one access network entity, and the initial access procedure message carries core network type selection information, and the core network type selection information is used by the access network entity to determine a core network type to which the UE needs to access.
optionally, the UE further includes:
and the acquisition module is used for acquiring the core network type information connected with the access network entity.
Optionally, the obtaining module includes:
a sending unit, configured to initiate a system information access request to the network; and
a receiving unit, configured to receive core network type information of the access network entity connection sent by the access network entity in the network according to the access system information request.
optionally, the obtaining module is configured to obtain, through system information, core network type information to which the access network entity is connected.
Optionally, the obtaining module is configured to obtain core network type information connected to the access network entity according to a system message broadcast by the access network entity; or
The obtaining module is used for obtaining the core network type information connected with the access network entity according to the system information obtained in the access process.
Optionally, the transmission module includes:
A first determining unit, configured to determine a core network type to which the UE needs to access;
a second determining unit, configured to determine a target version of a connection setup complete message corresponding to a core network type to which the UE needs to access; and
and the first transmission unit is used for transmitting the connection establishment completion message of the target version to the network.
optionally, the connection setup complete message is a radio resource control, RRC, connection setup complete message.
Optionally, the transmission module includes:
a third determining unit, configured to determine a core network type to which the UE needs to access;
a fourth determining unit, configured to determine NAS node selection information corresponding to a core network type to which the UE needs to access; and
And the second transmission unit is used for initiating an initial access process message carrying the NAS node selection information to a network.
An embodiment of the present invention further provides an access network entity, where the access network entity includes:
a receiving module, configured to receive an initial access procedure message transmitted by a UE in a network, where the initial access procedure message carries core network type selection information; and
And the selection module is used for selecting the core network of the core network type to which the UE needs to be accessed for the UE according to the core network type selection information.
Optionally, the access network entity further includes:
And the transmission module is used for transmitting the core network type information connected with the access network entity to the network.
optionally, the transmission module is configured to broadcast core network type information connected to the access network entity.
optionally, the transmission module includes:
A receiving unit, configured to receive an access system information request transmitted by the UE in the network; and
and the sending unit is used for transmitting the core network type information connected with the access network entity to the network according to the access system information request.
Optionally, the initial access procedure message is a connection establishment completion message of a target version;
and the selection module is used for selecting the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
Optionally, the connection setup complete message is an RRC connection setup complete message.
Optionally, the selection module comprises:
a determining unit, configured to determine whether the access network entity is connected to a core network of a core network type to which the UE needs to access; and
a rejecting unit, configured to reject the connection request of the UE if the access network entity is not connected to a core network of a core network type to which the UE needs to access.
Optionally, the initial access procedure message carries non-access stratum NAS node selection information;
The selection module is configured to select, for the UE, an NAS node in a core network type to which the UE needs to access according to the initial access procedure message.
An embodiment of the present invention further provides a core network selection system, where the system includes:
The UE is used for initiating an initial access process message to a network, wherein the initial access process message carries core network type selection information;
The access network entity is used for receiving the initial access process message; and
and the access network entity is also used for selecting the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information.
The technical scheme of the invention at least has the following beneficial effects:
in the embodiment of the invention, a user terminal UE initiates an initial access process message to a network, wherein the network comprises at least one access network entity, the initial access process message carries core network type selection information, and the core network type selection information is used for the access network entity to determine the core network type to which the UE needs to be accessed. In this way, the UE can send the corresponding NAS message version according to the core network type that needs to be accessed, and the access network entity can also determine the core network type that the UE needs to be accessed according to the access request and route the access request of the UE to the corresponding core network, thereby avoiding UE access abnormality.
Drawings
Fig. 1 is a schematic diagram of a network structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another network structure provided by the embodiment of the present invention;
fig. 3 is a schematic diagram of another network structure provided by the embodiment of the present invention;
fig. 4 is a flowchart illustrating a core network selection method according to an embodiment of the present invention;
Fig. 5 is a flowchart illustrating another core network selection method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a UE according to an embodiment of the present invention;
Fig. 7 is a schematic structural diagram of another UE according to an embodiment of the present invention;
Fig. 8 is a schematic structural diagram of another UE according to an embodiment of the present invention;
Fig. 9 is a schematic structural diagram of another UE according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another UE according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an access network entity according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another access network entity provided in the embodiment of the present invention;
Fig. 13 is a schematic structural diagram of another access network entity provided in the embodiment of the present invention;
fig. 14 is a schematic structural diagram of another access network entity provided in the embodiment of the present invention;
fig. 15 is a schematic structural diagram of another UE according to an embodiment of the present invention;
fig. 16 is a schematic structural diagram of another access network entity provided in the embodiment of the present invention;
Fig. 17 is a schematic structural diagram of a core network selection system according to an embodiment of the present invention.
Detailed Description
in order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In the future, the same access network entity may be connected to several different types of core networks, see fig. 1 to 3, where fig. 1 to 3 are schematic diagrams of three different network structures provided by the embodiment of the present invention, where the network includes at least one UE, at least one access network entity, and at least one core network connected to the at least one access network entity. In the network structure shown in fig. 1, the access network entity may only connect to a legacy core network (e.g. the current fourth generation mobile communication technology 4G core network EPC), and in this case, the access network entity may provide services for both legacy UEs (e.g. the current 4GUE) and new generation UEs (e.g. the fifth generation mobile communication technology 5GUE that may be generated in the future). In the network structure shown in fig. 2, the access network entity may connect to both the legacy core network and the new generation core network (for example, a 5G core network NG-CN that may be generated in the future), and at this time, the access network entity may provide services for both the legacy UE and the new generation UE. In the network structure shown in fig. 3, the access network entity may also be connected to only a new generation core network, and at this time, the access network entity may only provide services for a new generation UE. The access network entity may be an entity such as a base station, and the conventional UE and the new-generation UE may be terminal devices such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal digital assistant (PDA for short), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that a specific type of the UE is not limited in the embodiment of the present invention.
Referring to fig. 4, fig. 4 is a schematic flowchart of a core network selection method provided in an embodiment of the present invention, and as shown in fig. 4, the method includes:
step 401, the UE initiates an initial access procedure message to a network, where the network includes at least one access network entity, the initial access procedure message carries core network type selection information, and the core network type selection information is used by the access network entity to determine a core network type that the UE needs to access.
in this step, the UE may first determine a core network type that the UE needs to access, and then transmit the initial access procedure message carrying the core network type selection information to the network in an initial access procedure, where an access network entity in the network may determine the core network type that the UE needs to access according to the core network type selection information.
the UE may or may not acquire the core network type information connected to the access network entity in advance. The UE may obtain the core network type information connected to the access network entity by receiving a system message, for example, receiving the system message broadcast by the access network entity or obtaining the system message in an access process. The UE may also transmit an access system information request to the access network entity of the network, and the access network entity may transmit core network type information connected to the access network entity to the UE after receiving the access system information request.
the core network type information of the access network entity connection may include: only the legacy core network, only the new generation core network, or both the legacy core network and the new generation core network. In the embodiment of the present invention, the present invention will be further described below by taking a 4G core network as a legacy core network and a 5G core network as a new-generation core network as examples, but the present invention is not limited to the 4G core network and the 5G core network. For example, the core network type information of the access network entity connection may include: a connection to only the 4G core network (EPC only), a connection to only the 5G core network (NG-CN only), or a connection to both the 4G and 5G core networks (EPCand NG-CN).
the UE can determine the core network type which the UE needs to access according to the core network type information connected with the access network entity, can also determine the core network type which the UE needs to access according to the selection of a user, and can also determine the core network type which needs to access according to the core network type supported by the UE. In the embodiment of the present invention, the UE may determine the core network type to which the UE needs to access through different combinations of the three manners.
For example, if a new generation UE supporting both a legacy core network and a new generation core network receives the core network type information of the access network entity connection only to connect the legacy core network, the UE may determine that the core network type to be accessed is the legacy core network according to the core network type of the access network entity connection. For a conventional UE only supporting a conventional core network, if the type information of the core network connected with the access network entity sent by the access network entity is received, the UE determines that the type of the core network to which the UE needs to access is the conventional core network. For a new generation of UE which supports both a traditional core network and a new generation of core network, the UE can provide a user interface for a user to select to connect only the new generation of core network, preferentially connect the new generation of core network or connect only the traditional core network during access, and the UE determines the type of the core network which the UE needs to access according to the final selection of the user. For a traditional UE only supporting a traditional core network, the UE determines the type of the core network to which the UE needs to access as the traditional core network according to the type of the core network supported by the UE. In addition, if the new generation of UE receives that the core network type connected to the access network entity is to connect the legacy core network and the new generation of core network at the same time, the UE may provide a user interface according to the core network type information connected to the access network entity for a user to select the core network type to be accessed, and then determine the core network type to be accessed by the UE according to the selection result of the user.
The UE may generate an initial access procedure message including core network type selection information that the UE needs to access and transmit the initial access procedure message to a network, where the access network entity in the network directly acquires the UE core network type selection information in the initial access procedure message to determine a core network type that the UE needs to access. The UE can also send an initial access process message of a target version, and then the access network entity determines that the core network type corresponding to the target version is the core network type which the UE needs to access according to the initial access process message, wherein the initial access process messages of different versions correspond to different core network types. The initial access procedure message may be a connection setup complete message, such as an RRC connection setup complete message, or may be another message. In this embodiment of the present invention, the initial access procedure message may further carry NAS node selection information corresponding to a core network type to which the UE needs to access, and the access network entity may select, for the UE, an NAS node in a core network of the core network type to which the UE needs to access according to the NAS node selection information after receiving the initial access procedure message.
Optionally, before the UE initiates an initial access procedure message to the network, the UE acquires core network type information of an access network entity connection.
the UE may obtain the core network type information connected to the access network entity in a manner that the UE initiates an access system information request to a network, and then the access network entity in the network sends the core network type information connected to the access network entity according to the access system information request; the UE may also acquire the core network type information connected to the access network entity through a system message, where the system message may be a system message broadcast by the access network entity, or a system message acquired by the UE in an access process.
optionally, the obtaining, by the UE, core network type information of an access network entity connection includes: the UE initiates a system information access request to the network; and the UE receives the core network type information of the access network entity connection sent by the access network entity in the network according to the access system information request.
For a communication protocol supporting a UE to acquire core network type information connected to an access network entity through an access process, for example, a New generation radio resource control protocol (New RRC protocol), if the UE does not know the core network type information connected to the access network entity before accessing the network, the UE may initiate an access system information request to the network, and the access network entity may transmit the core network type information connected to the access network entity to the UE after receiving the access system information request. Therefore, the UE can acquire the core network type information connected with the current access network entity before initiating the initial access process message, so that the core network type which the UE needs to access and NAS node selection information corresponding to the core network type which the UE needs to access can be determined according to the core network type information connected with the access network entity, and abnormal access caused by sending wrong NAS node selection information when the UE requests to access is avoided.
Optionally, the obtaining, by the UE, core network type information of an access network entity connection includes: and the UE acquires the core network type information connected with the access network entity through system information.
In this embodiment of the present invention, the system information may be core network type information of the access network entity connection broadcasted by the access network entity, or may be system information obtained by the UE in an access process.
optionally, the obtaining, by the UE, the core network type information connected to the access network entity through a system message includes: the UE acquires the core network type information connected with the access network entity according to the system information broadcast by the access network entity; or the UE acquires the core network type information connected with the access network entity according to the system information acquired in the access process.
In order to assist the new generation of UEs to know the core network type information connected by the access network entity when initiating the connection, the access network entity may periodically broadcast the core network type information connected by itself. In the embodiment of the present invention, the access network entity may add core network type information of its own connection to an existing system broadcast message 2(SIB2), and the UE may store the system message after receiving the system message broadcast by the access network entity, so as to determine a core network type that the UE needs to access when performing subsequent access, so as to determine corresponding NAS node selection information according to the core network type that needs to access. The system broadcast message type 2 belongs to the existing structure, which is not described herein again, and the structure thereof can be referred to as 3GPP TR 36.331.
In addition, for a communication protocol, such as a New generation radio resource control protocol (New RRC protocol), which supports the UE to acquire the core network type information connected to the access network entity through the access process and may not broadcast the system information periodically, the UE may obtain the system information in advance during the access process, and then determine the core network type information connected to the access network entity according to the system information obtained in advance.
optionally, the UE initiates an initial access procedure message to the network, including: the UE determines the type of a core network to which the UE needs to access; the UE determines a target version of a connection establishment completion message corresponding to a core network type to which the UE needs to access; and the UE transmits the connection establishment completion message of the target version to a network.
in the embodiment of the present invention, after determining the core network type to which the UE needs to access, the UE may initiate a connection establishment completion message of different versions to the network, where the connection establishment completion message of different versions corresponds to different core network types. The access network entity may determine the core network type to which the UE needs to access according to the version of the connection establishment completion message.
optionally, the connection setup complete message is a radio resource control, RRC, connection setup complete message.
in the embodiment of the invention, the RRC connection establishment completion messages of different versions correspond to different core network types. The RRC connection setup complete message, for example, of the version "rrcConnectionSetupComplete-r 8", corresponds to a type of a legacy core network, for example, an EPC core network; the RRC connection setup complete message of the version 'rrcConnectionSetupComplete-r 14' corresponds to a new generation core network type, e.g. NG-CN.
if the UE determines that the core network type to which the UE needs to access is the traditional core network type, the UE can initiate an RRC connection establishment completion message of the 'rrcConnectionSetupComplex-r 8' version to the network, an access network entity in the network can determine that the core network type to which the UE needs to access is the EPC core network according to the version of the RRC connection establishment completion message after receiving the RRC connection establishment completion message of the 'rrcConnectionSetupComplex-r 8' version, and the access network entity selects the EPC core network for the UE. Correspondingly, if the UE determines that the core network type to which the UE needs to access is a new generation core network type, the UE may initiate an RRC connection setup complete message of a version of 'rrcConnectionSetupComplex-r 14' to the network, after receiving the RRC connection setup complete message of the version of 'rrcConnectionSetupComplex-r 14', an access network entity in the network may determine that the core network type to which the UE needs to access is an NG-CN core network according to the version of the RRC connection setup complete message, and the access network entity selects the NG-CN core network for the UE.
In the embodiment of the present invention, after the access network entity receives the RRC connection setup complete message of the target version and determines the core network type to which the UE needs to access, the access network entity further determines whether the access network entity is connected to the core network of the core network type to which the UE needs to access. If the access network entity is connected with the core network of the core network type to which the UE needs to be accessed, the access network entity selects the core network of the core network type to which the UE needs to be accessed for the UE; on the contrary, if the access network entity does not have the core network connection with the core network type that the UE needs to access, the access network entity rejects the connection request of the UE.
Optionally, the UE initiates an initial access procedure message to the network, including: the UE determines the type of a core network to which the UE needs to access; the UE determines NAS node selection information corresponding to the core network type to which the UE needs to access; and the UE initiates an initial access process message carrying the NAS node selection information to a network.
in the embodiment of the present invention, after determining the core network type that needs to be accessed, the UE further determines NAS node selection information corresponding to the core network type according to the core network type that the UE needs to be accessed, and initiates an initial access procedure message carrying the NAS node selection information to a network. For example, when determining to send an RRC connection setup complete message of "rrcConnectionSetupComplete-r 14" version to the network, the UE may carry NAS node selection information corresponding to the new-generation core network in the message. And after receiving the RRC connection establishment completion message of the version, the access network entity selects an NAS node in a new generation core network for the UE according to the NAS node selection information. Therefore, the UE carries the corresponding NAS node selection information in the message for sending the RRC connection establishment completion so that the access network entity can complete the core network node selection for the UE, and the problem that the UE is abnormally accessed due to the fact that the NAS message used when the UE is accessed is incorrect in version is solved.
it should be noted that, in this embodiment, various optional implementations described above may be implemented in combination with each other, or may be implemented separately.
In this embodiment, a UE initiates an initial access procedure message to a network, where the network includes at least one access network entity, the initial access procedure message carries core network type selection information, and the core network type selection information is used by the access network entity to determine a core network type to which the UE needs to access. In this way, the UE can send the corresponding NAS message version according to the core network type that needs to be accessed, and the access network entity can also determine the core network type that the UE needs to be accessed according to the access request and route the access request of the UE to the corresponding core network, thereby avoiding UE access abnormality.
Referring to fig. 5, an embodiment of the present invention provides another core network selection method, as shown in fig. 5, including the following steps:
Step 501, an access network entity in a network receives an initial access process message transmitted by a UE, where the initial access process message carries core network type selection information.
Step 502, the access network entity selects a core network of a core network type to which the UE needs to access for the UE according to the core network type selection information.
Optionally, before the access network entity in the network receives the initial access procedure message transmitted by the UE, the method includes: and the access network entity transmits the core network type information connected with the access network entity to the network.
Optionally, the transmitting, by the access network entity, the core network type information to which the access network entity is connected to the network includes: and the access network entity broadcasts the core network type information connected with the access network entity.
Optionally, the transmitting, by the access network entity, the core network type information to which the access network entity is connected to the network includes: the access network entity receives an access system information request transmitted by the UE in the network; and the access network entity transmits the core network type information connected with the access network entity to the network according to the access system information request.
optionally, the initial access procedure message is a connection establishment completion message of a target version; the access network entity selects the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information, and the method comprises the following steps: and the access network entity selects the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
Optionally, the connection setup complete message is an RRC connection setup complete message.
optionally, the selecting, by the access network entity, a core network of a core network type to which the UE needs to access for the UE according to the core network type selection information includes: the access network entity judges whether the access network entity is connected with a core network of the core network type which the UE needs to access; and if the access network entity is not connected with the core network of the core network type which the UE needs to access, the access network entity rejects the connection request of the UE.
Optionally, the initial access procedure message carries non-access stratum NAS node selection information; the access network entity selects a core network of a core network type to which the UE needs to access for the UE according to the initial access process message, and the method comprises the following steps: and the access network entity selects an NAS node in the core network type to which the UE needs to access for the UE according to the initial access process message.
in this embodiment, an access network entity in a network receives an initial access procedure message transmitted by a UE from the network, where the initial access procedure message carries core network type selection information; and the access network entity selects the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information. In this way, the access network entity can also determine the core network type to which the UE needs to access according to the access request and route the access request of the UE to the corresponding core network, thereby avoiding causing abnormal access of the UE.
it should be noted that this embodiment may be an access network entity-side embodiment corresponding to the embodiment shown in fig. 4, and the relevant steps executed by the access network entity may refer to relevant descriptions in the embodiment shown in fig. 4, which are not described herein again.
Referring to fig. 6, a UE structure is shown, the UE comprising:
a transmission module 61, configured to initiate an initial access procedure message to a network, where the network includes at least one access network entity, and the initial access procedure message carries core network type selection information, and the core network type selection information is used by the access network entity to determine a core network type that the UE needs to access.
optionally, referring to fig. 7, another UE structure is shown, where the UE further includes:
An obtaining module 62, configured to obtain core network type information of an access network entity connection.
Optionally, referring to fig. 8, which shows another UE structure, the obtaining module 62 includes:
a sending unit 621, configured to initiate a system information access request to the network; and
a receiving unit 622, configured to receive core network type information of the access network entity connection sent by the access network entity in the network according to the access system information request.
optionally, the obtaining module 62 is configured to obtain, through system information, core network type information to which the access network entity is connected.
optionally, the obtaining module 62 is configured to obtain core network type information connected to the access network entity according to the system message broadcast by the access network entity; or
The obtaining module 62 is configured to obtain core network type information of the access network entity according to the system message obtained in the access process.
Optionally, referring to fig. 9, which shows another UE structure, the transmission module 61 includes:
A first determining unit 611, configured to determine a core network type to which the UE needs to access;
a second determining unit 612, configured to determine a target version of a connection setup complete message corresponding to a core network type to which the UE needs to access; and
A first transmitting unit 613, configured to transmit the connection establishment completion message of the target version to a network.
Optionally, the connection setup complete message is a radio resource control, RRC, connection setup complete message.
Optionally, referring to fig. 10, which shows another UE structure, the transmission module 61 includes:
a third determining unit 614, configured to determine a core network type to which the UE needs to access;
A fourth determining unit 615, configured to determine NAS node selection information corresponding to a core network type to which the UE needs to access; and
a second transmission unit 616, configured to initiate an initial access procedure message carrying the NAS node selection information to a network.
it should be noted that, in this embodiment, the UE may be the UE in the embodiment shown in fig. 1 to 5, and any implementation of the UE in the embodiment shown in fig. 1 to 5 may be implemented by the UE in this embodiment to achieve the same beneficial effects, which is not described herein again.
Referring to fig. 11, there is shown an access network entity structure, which includes:
A receiving module 111, configured to receive an initial access procedure message transmitted by a UE in a network, where the initial access procedure message carries core network type selection information; and
a selecting module 112, configured to select, for the UE, a core network of a core network type that the UE needs to access according to the core network type selection information.
Optionally, referring to fig. 12, another access network entity structure is shown in the figure, where the access network entity further includes:
a transmission module 113, configured to transmit the core network type information connected to the access network entity to the network.
optionally, the transmission module 113 is configured to broadcast core network type information of the access network entity.
Optionally, referring to fig. 13, which shows another access network entity structure, the transmission module 113 includes:
a receiving unit 1131, configured to receive an access system information request transmitted by the UE in the network; and
a sending unit 1132, configured to transmit, to the network, the core network type information connected to the access network entity according to the access system information request.
Optionally, the initial access procedure message is a connection establishment completion message of a target version;
the selecting module 112 is configured to select a core network of a core network type corresponding to the target version for the UE according to the connection establishment completion message.
optionally, the connection setup complete message is an RRC connection setup complete message.
optionally, referring to fig. 14, which shows another access network entity structure, the selecting module 112 includes:
A determining unit 1121, configured to determine whether the access network entity is connected to a core network of a core network type to which the UE needs to access; and
A rejecting unit 1122, configured to reject the connection request of the UE if the access network entity does not have a core network connection with a core network type to which the UE needs to access.
optionally, the initial access procedure message carries non-access stratum NAS node selection information;
The selecting module 112 is configured to select, according to the initial access procedure message, an NAS node in a core network type to which the UE needs to access for the UE.
it should be noted that the access network entity in this embodiment may be the access network entity in the embodiments shown in fig. 1 to 5, and any implementation of the access network entity in the embodiments shown in fig. 1 to 5 may be implemented by the access network entity in this embodiment, and the same beneficial effects are achieved, which is not described herein again.
referring to fig. 15, another UE structure is shown, the UE comprising: a processor 1500, a transceiver 1510, a memory 1520, a user interface 1530, and a bus interface, wherein:
the processor 1500, which is used to read the program in the memory 1520, executes the following processes:
and initiating an initial access process message to a network, wherein the network comprises at least one access network entity, the initial access process message carries core network type selection information, and the core network type selection information is used for the access network entity to determine the core network type to which the UE needs to access.
Among other things, the transceiver 1510 operates to receive and transmit data under the control of the processor 1500.
in fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1510 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1530 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
the processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.
Optionally, before the processor 1500 executes the initial access procedure message to the network, the method may include:
Obtaining the core network type information of the access network entity connection.
Optionally, the processor 1500 executes the obtaining of the core network type information of the access network entity connection, including:
initiating an access system information request to the network;
and receiving the core network type information connected with the access network entity, which is sent by the access network entity in the network according to the access system information request.
Optionally, the processor 1500 executes the obtaining of the core network type information of the access network entity connection, including:
And obtaining the core network type information connected with the access network entity through system information.
Optionally, the processor 1500 obtains the core network type information of the access network entity connection through a system message, including:
Acquiring core network type information connected with the access network entity according to the system information broadcast by the access network entity; or
And acquiring the core network type information connected with the access network entity according to the system information acquired in the access process.
Optionally, the processor 1500 performs initiating an initial access procedure message to the network, including:
determining the type of a core network which needs to be accessed by the UE;
Determining a target version of a connection establishment completion message corresponding to a core network type to which the UE needs to access; and
And transmitting the connection establishment completion message of the target version to the network.
optionally, the connection setup complete message is a radio resource control, RRC, connection setup complete message.
optionally, the processor 1500 executes the UE initiating an initial access procedure message to the network, including:
Determining the type of a core network which needs to be accessed by the UE;
Determining NAS node selection information corresponding to the core network type to which the UE needs to access;
and initiating an initial access process message carrying the NAS node selection information to a network.
it should be noted that, the UE in this embodiment may be the UE in the embodiment shown in fig. 1 to fig. 5, and any implementation of the UE in the embodiment shown in fig. 1 to fig. 5 may be implemented by the UE in this embodiment to achieve the same beneficial effects, which is not described herein again.
Referring to fig. 16, there is shown a structure of an access network entity, which includes: a processor 1600, a transceiver 1610, a memory 1620, a user interface 1630, and a bus interface, wherein:
the processor 1600, which is used to read the program in the memory 1620, executes the following processes:
Receiving an initial access process message transmitted by UE in a network, wherein the initial access process message carries core network type selection information;
and selecting the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information.
a transceiver 1610 for receiving and transmitting data under the control of the processor 1600.
in fig. 16, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 1600 and various circuits of the memory represented by the memory 1620 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1610 can be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.
The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.
Optionally, before the processor 1600 performs receiving the initial access procedure message transmitted by the UE from the network, the method includes:
And transmitting the core network type information connected with the access network entity to the network.
optionally, the processor 1600 performs the transmission of the core network type information of the access network entity connection to the network, including:
And broadcasting the core network type information connected with the access network entity.
Optionally, the processor 1600 performs the transmission of the core network type information of the access network entity connection to the network, including:
receiving an access system information request transmitted by the UE in the network;
And transmitting the core network type information connected with the access network entity to the network according to the access system information request.
optionally, the initial access procedure message is a connection establishment completion message of a target version;
The processor 1600, according to the core network type selection information, selects a core network of a core network type to which the UE needs to access for the UE, including:
and selecting the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
optionally, the connection setup complete message is an RRC connection setup complete message.
Optionally, the processor 1600 executes the core network selecting the core network of the core network type that the UE needs to access for the UE according to the core network type selection information, including:
Judging whether the access network entity is connected with a core network of the core network type to which the UE needs to be accessed;
and if the access network entity is not connected with the core network of the core network type which the UE needs to access, rejecting the connection request of the UE.
optionally, the initial access procedure message carries non-access stratum NAS node selection information;
The processor 1600 performs the selection of the core network type to which the UE needs to access for the UE according to the initial access procedure message, including:
and selecting the NAS node in the core network type to which the UE needs to access for the UE according to the initial access process message.
it should be noted that the access network entity in this embodiment may be the access network entity in the embodiments shown in fig. 1 to 5, and any implementation of the access network entity in the embodiments shown in fig. 1 to 5 may be implemented by the access network entity in this embodiment, and the same beneficial effects are achieved, which is not described herein again.
Referring to fig. 17, there is shown a structure of a core network selection system, which includes:
The UE171 is configured to initiate an initial access procedure message to a network, where the initial access procedure message carries core network type selection information;
An access network entity 172, configured to receive the initial access procedure message; and
the access network entity 172 is further configured to select, for the UE171, a core network of a core network type that the UE171 needs to access according to the core network type selection information.
in this embodiment, the UE171 and the access network entity 172 may be the UE and the access network entity introduced in the embodiments shown in fig. 1 to 16, and their implementation manners may refer to the implementation manners shown in fig. 1 to 16, which may also achieve the same technical effect, and are not described herein again.
in the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
in addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
while the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (21)
1. a core network selection method, comprising:
A user terminal UE initiates an initial access process message to a network, wherein the network comprises at least one access network entity, the initial access process message carries core network type selection information, and the core network type selection information is used for the access network entity to determine the core network type to which the UE needs to be accessed;
Before the UE initiates an initial access procedure message to a network, the method further includes:
the UE acquires core network type information connected with an access network entity, wherein the core network type information comprises: only connecting the traditional core network, only connecting the new generation core network or simultaneously connecting the traditional core network and the new generation core network;
the UE determines the core network type to which the UE needs to access according to the core network type information connected with the access network entity;
the UE acquires the core network type information of the access network entity connection, and the method comprises the following steps:
The UE initiates a system information access request to the network;
The UE receives core network type information of the access network entity connection sent by an access network entity in the network according to the access system information request;
or, the UE obtains core network type information of an access network entity connection, including:
And the UE acquires the core network type information connected with the access network entity through system information.
2. The method of claim 1, wherein the UE obtains the core network type information of the access network entity connection through a system message, comprising:
the UE acquires the core network type information connected with the access network entity according to the system information broadcast by the access network entity; or
and the UE acquires the core network type information connected with the access network entity according to the system information acquired in the access process.
3. the method of claim 1, wherein the UE initiates an initial access procedure message to a network, comprising:
the UE determines a target version of a connection establishment completion message corresponding to a core network type to which the UE needs to access; and
And the UE transmits the connection establishment completion message of the target version to a network.
4. the method of claim 3, wherein the connection setup complete message is a Radio Resource Control (RRC) connection setup complete message.
5. the method of any of claims 1 to 4, wherein the UE initiating an initial access procedure message to a network comprises:
The UE determines NAS node selection information corresponding to the core network type to which the UE needs to access;
And the UE initiates an initial access process message carrying the NAS node selection information to a network.
6. a core network selection method, comprising:
An access network entity in a network receives an initial access process message transmitted by UE, wherein the initial access process message carries core network type selection information;
The access network entity selects a core network of the core network type to which the UE needs to access for the UE according to the core network type selection information;
before the access network entity in the network receives the initial access procedure message transmitted by the UE, the method further includes:
The access network entity transmits core network type information connected with the access network entity to the network, wherein the core network type information comprises: only connecting the traditional core network, only connecting the new generation core network or simultaneously connecting the traditional core network and the new generation core network;
the method for transmitting the core network type information connected with the access network entity to the network by the access network entity comprises the following steps:
the access network entity broadcasts the core network type information connected with the access network entity;
Or, the transmitting, by the access network entity, the core network type information to which the access network entity is connected to the network includes:
the access network entity receives an access system information request transmitted by the UE in the network;
And the access network entity transmits the core network type information connected with the access network entity to the network according to the access system information request.
7. The method of claim 6, wherein the initial access procedure message is a target version of a connection setup complete message;
the access network entity selects the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information, and the method comprises the following steps:
And the access network entity selects the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
8. The method of claim 7, wherein the connection setup complete message is an RRC connection setup complete message.
9. the method according to any of claims 6 to 8, wherein the selecting, by the access network entity, the core network of the core network type to which the UE needs to access for the UE according to the core network type selection information includes:
the access network entity judges whether the access network entity is connected with a core network of the core network type which the UE needs to access;
And if the access network entity is not connected with the core network of the core network type which the UE needs to access, the access network entity rejects the connection request of the UE.
10. The method according to any of claims 6 to 8, wherein the initial access procedure message carries non-access stratum, NAS, node selection information;
the access network entity selects a core network of a core network type to which the UE needs to access for the UE according to the initial access process message, and the method comprises the following steps:
And the access network entity selects an NAS node in the core network type to which the UE needs to access for the UE according to the initial access process message.
11. a UE, comprising:
a transmission module, configured to initiate an initial access procedure message to a network, where the network includes at least one access network entity, and the initial access procedure message carries core network type selection information, where the core network type selection information is used by the access network entity to determine a core network type that the UE needs to access;
The UE further comprises:
An obtaining module, configured to obtain core network type information of an access network entity connection, where the core network type information includes: only connecting the traditional core network, only connecting the new generation core network or simultaneously connecting the traditional core network and the new generation core network;
the transmission module is further configured to determine a core network type to which the UE needs to access according to the core network type information connected to the access network entity;
The acquisition module includes:
a sending unit, configured to initiate a system information access request to the network; and
a receiving unit, configured to receive core network type information of the access network entity connection sent by an access network entity in the network according to the access system information request;
or, the obtaining module is configured to obtain, through system information, core network type information to which the access network entity is connected.
12. The UE of claim 11, wherein the obtaining module is configured to obtain core network type information of the access network entity according to a system message broadcasted by the access network entity; or
The obtaining module is used for obtaining the core network type information connected with the access network entity according to the system information obtained in the access process.
13. The UE of claim 11, wherein the transmission module comprises:
a second determining unit, configured to determine a target version of a connection setup complete message corresponding to a core network type to which the UE needs to access; and
And the first transmission unit is used for transmitting the connection establishment completion message of the target version to the network.
14. the UE of claim 13, wherein the connection setup complete message is a radio resource control, RRC, connection setup complete message.
15. the UE of any one of claims 11 to 14, wherein the transmission module comprises:
a fourth determining unit, configured to determine NAS node selection information corresponding to a core network type to which the UE needs to access; and
And the second transmission unit is used for initiating an initial access process message carrying the NAS node selection information to a network.
16. An access network entity, characterized in that the access network entity comprises:
a receiving module, configured to receive an initial access procedure message transmitted by a UE in a network, where the initial access procedure message carries core network type selection information; and
A selection module, configured to select, for the UE, a core network of a core network type to which the UE needs to access according to the core network type selection information;
the access network entity further comprises:
A transmission module, configured to transmit core network type information to the network, where the core network type information includes: only connecting the traditional core network, only connecting the new generation core network or simultaneously connecting the traditional core network and the new generation core network;
the transmission module is used for broadcasting the core network type information connected with the access network entity;
Or, the transmission module includes:
A receiving unit, configured to receive an access system information request transmitted by the UE in the network; and
and the sending unit is used for transmitting the core network type information connected with the access network entity to the network according to the access system information request.
17. The access network entity of claim 16, wherein the initial access procedure message is a target version of a connection setup complete message;
And the selection module is used for selecting the core network of the core network type corresponding to the target version for the UE according to the connection establishment completion message.
18. the access network entity of claim 17, wherein the connection setup complete message is an RRC connection setup complete message.
19. the access network entity according to any of claims 16 to 18, wherein the selection module comprises:
A determining unit, configured to determine whether the access network entity is connected to a core network of a core network type to which the UE needs to access; and
a rejecting unit, configured to reject the connection request of the UE if the access network entity is not connected to a core network of a core network type to which the UE needs to access.
20. the access network entity according to any of claims 16 to 18, wherein the initial access procedure message carries non-access stratum, NAS, node selection information;
the selection module is configured to select, for the UE, an NAS node in a core network type to which the UE needs to access according to the initial access procedure message.
21. A core network selection system, the system comprising:
The UE is used for acquiring core network type information connected with an access network entity, wherein the core network type information comprises: only connecting the traditional core network, only connecting the new generation core network or simultaneously connecting the traditional core network and the new generation core network;
The UE is also used for determining the core network type to which the UE needs to access according to the core network type information connected with the access network entity;
the UE is also used for initiating an initial access process message to a network, wherein the initial access process message carries core network type selection information;
The access network entity is used for receiving the initial access process message; and
the access network entity is further configured to select, for the UE, a core network of a core network type to which the UE needs to access according to the core network type selection information;
The method for acquiring the core network type information of the access network entity connection by the UE comprises the following steps:
the UE initiates an access system information request to the network, and the access network entity receives the access system information request transmitted by the UE in the network and transmits core network type information connected with the access network entity to the network according to the access system information request;
The UE receives core network type information which is sent by the access network entity and is connected with the access network entity;
or, the UE obtains core network type information of an access network entity connection, including:
The access network entity broadcasts the core network type information connected with the access network entity;
and the UE acquires the core network type information connected with the access network entity through system information.
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| JP2021523594A (en) * | 2018-05-18 | 2021-09-02 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Information processing method, network equipment, terminal equipment |
| WO2020006656A1 (en) * | 2018-07-02 | 2020-01-09 | Oppo广东移动通信有限公司 | Information configuration method and device, and communication device |
| US20210314827A1 (en) * | 2018-08-10 | 2021-10-07 | Beijing Xiaomi Mobile Software Co., Ltd. | Cell measurement method, apparatus, device, and storage medium |
| CN110536295B (en) * | 2019-01-10 | 2023-01-06 | 中兴通讯股份有限公司 | Initial access control method, device, terminal, smart card and storage medium |
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Effective date of registration: 20210602 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |