CN109246792B - Wireless communication method and device, computer readable storage medium and user terminal - Google Patents
Wireless communication method and device, computer readable storage medium and user terminal Download PDFInfo
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- CN109246792B CN109246792B CN201710290643.8A CN201710290643A CN109246792B CN 109246792 B CN109246792 B CN 109246792B CN 201710290643 A CN201710290643 A CN 201710290643A CN 109246792 B CN109246792 B CN 109246792B
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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
- H04W48/16—Discovering, processing access restriction or access information
Abstract
A wireless communication method and device, a computer readable storage medium and a user terminal are provided. The method comprises the following steps: a user terminal sends a first access request to a 5G core network; when the user terminal receives the information of rejecting the first access request sent by the 5G core network, a second access request is sent to the 4G core network, and the user terminal communicates with the 4G core network; the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request. By applying the scheme, the user operation required when the user terminal in the 5G non-connection state carries out communication can be reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a wireless communication method and apparatus, a computer-readable storage medium, and a user terminal.
Background
The fifth generation wireless communication system (5G) will be deployed in the future, but due to the widespread deployment of the fourth generation wireless communication system (4G), the 5G performs regional enhancements also based on 4G coverage at the beginning of the 5G deployment.
In general, a UE supporting both a 4G core network and a 5G core network can only initiate a service to the 4G core network if the UE is only registered to the 4G core network, can only initiate a service to the 5G core network if the UE is only registered to the 5G core network, and can initiate a service to both the 4G core network and the 5G core network if the UE is simultaneously registered to the 4G and 5G core networks.
In the actual communication process, if the UE in the 5G non-connected state initiates access to the 5G core network, and the 5G core network rejects the UE access for some reason, the UE access will be failed, and the UE needs to return to the original state. If the service request is sent, the user needs to be prompted to fail in service initiation through an interface, if the user still needs to communicate with the network, the user needs to manually initiate access again, and more user operations are needed.
Disclosure of Invention
The problem to be solved by the invention is how to reduce the user operation required when the user terminal in the 5G non-connection state carries out communication.
In order to solve the above problem, an embodiment of the present invention provides a wireless communication method, where the method includes: a user terminal sends a first access request to a 5G core network; when the user terminal receives the information of rejecting the first access request sent by the 5G core network, a second access request is sent to the 4G core network, and the user terminal communicates with the 4G core network; the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
Optionally, the user terminal sends the first access request to a 5G core network through a wireless connection with a 4G access network or a 5G access network.
Optionally, the user terminal initiates a second access request to the 4G core network through a wireless connection with the 4G access network.
Optionally, the initiating a second access request to the 4G core network includes: performing signaling interaction with the access network sending the first access request, so that the access network sending the first access request releases the wireless connection sending the first access request; and after the 4G access network releases the wireless connection for sending the first access request, performing signaling interaction with the 4G access network, reestablishing the wireless connection between the user terminal and the 4G access network, and initiating a second access request to the 4G core network through the reestablished wireless connection.
Optionally, the 5G core network sends the information of rejecting the first access request to the user terminal through the 4G access network or the 5G access network.
Optionally, the 5G core network sends the information of rejecting the first access request to the user terminal through an RRC signaling sent by the 4G access network or the 5G access network to the user terminal.
Optionally, the 5G core network sends the information of rejecting the first access request to the user terminal through NAS signaling.
Optionally, before initiating the second access request to the 4G core network, the user terminal further includes: and the user terminal is registered on the 4G core network.
Optionally, the information for rejecting the first access request includes: indication information of whether the 4G core network allows access.
Optionally, the 5G core network determines whether the 4G core network allows access by negotiating with the 4G core network.
Optionally, the communication request includes any one of: a service request or a registration request.
The embodiment of the invention also provides a wireless communication device which is arranged at the user terminal, and the device comprises: the first sending unit is suitable for sending a first access request to the 5G core network; the receiving unit is suitable for receiving the information which is sent by the 5G core network and refuses the first access request; the second sending unit is suitable for initiating a second access request to the 4G core network and communicating with the 4G core network when receiving the information which is sent by the 5G core network and rejects the first access request; the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
Optionally, the first sending unit is adapted to send the first access request to a 5G core network through a wireless connection with a 4G access network or a 5G access network.
Optionally, the second sending unit is adapted to initiate a second access request to the 4G core network through a wireless connection with the 4G access network.
Optionally, the second sending unit includes: a wireless connection release subunit, adapted to perform signaling interaction with the access network that sends the first access request, so that the access network that sends the first access request releases the wireless connection that sends the first access request; and the sending subunit is adapted to perform signaling interaction with the 4G access network after the 4G access network releases the wireless connection for sending the first access request, reestablish the wireless connection between the user terminal and the 4G access network, and initiate a second access request to the 4G core network through the reestablished wireless connection.
Optionally, the information rejecting the first access request is sent by the 5G core network to the user terminal through the 4G access network or the 5G access network.
Optionally, the information for rejecting the first access request is sent to the user terminal by an RRC signaling sent by the 5G core network to the user terminal through the 4G access network or the 5G access network.
Optionally, the information rejecting the first access request is sent to the user terminal by the 5G core network through NAS signaling.
Optionally, the apparatus further comprises: and the registration unit is suitable for registering on the 4G core network before initiating the second access request to the 4G core network.
Optionally, the information for rejecting the first access request received by the receiving unit includes: indication information of whether the 4G core network allows access.
Optionally, the indication information of whether the 4G core network allows access is determined by negotiation between the 5G core network and the 4G core network.
Optionally, the communication request includes any one of: a service request or a registration request.
Embodiments of the present invention further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method of any one of the above-mentioned steps is performed.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes any of the steps of the method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
by adopting the scheme, the user terminal initiates the second access request to the 4G core network when receiving the information which is sent by the 5G core network and rejects the first access request, and communicates with the 4G core network without manually initiating access by the user, so that the user operation can be reduced, the access success rate perceived by the user is improved, and the user experience is improved.
Drawings
Fig. 1 is a flow chart of a method of wireless communication in an embodiment of the invention;
fig. 2 is a schematic diagram of signaling interaction in a wireless communication process according to an embodiment of the present invention;
fig. 3 is a schematic diagram of signaling interaction in another wireless communication process according to an embodiment of the present invention;
fig. 4 is a schematic diagram of signaling interaction in a wireless communication process according to another embodiment of the present invention;
fig. 5 is a schematic diagram of signaling interaction in a wireless communication process according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention.
Detailed Description
At present, a UE in a 5G non-connected state initiates access to a 5G core network, and when the 5G core network rejects the UE access for some reason, the UE access immediately reports failure, and needs to return to an original state, if a service request is sent, a user needs to be prompted through an interface that the service initiation fails, if the user still needs to communicate with the network, the user needs to manually initiate access again, and a lot of user operations are required.
In view of the above problems, embodiments of the present invention provide a wireless communication method, where when receiving information that a 5G core network rejects a first access request, the wireless communication method initiates a second access request to a 4G core network to communicate with the 4G core network, and a user does not need to manually initiate access, so that user operations can be reduced, an access success rate perceived by the user is improved, and user experience is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a wireless communication method, which may specifically include the following steps:
and step 11, the user terminal sends a first access request to the 5G core network.
The UE simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
In specific implementation, the 4G access network may broadcast its own support for both the 4G core network and the 5G core network to the UEs in the cell under the jurisdiction in advance through a system message or the like, so that the UE supporting both the 5G core network and the 4G core network may initiate access to the 4G core network when the 5G core network rejects the access.
In an embodiment of the present invention, when the 4G access network may be simultaneously connected to the 5G core network and the 4G core network, the UE may send the first access request to the 5G core network through the wireless connection between the UE and the 4G access network after establishing the wireless connection with the 4G access network.
In another embodiment of the present invention, if the 4G access network cannot be connected to the 5G core network, the UE may send the first access request to the 5G core network through the wireless connection with the 5G access network after establishing the wireless connection with the 5G access network.
In a specific implementation, the first access request may include identification information of a communication request that needs to be processed by the 5G core network, and how to identify the communication request may be set in advance according to an actual situation, which is not illustrated here.
In a specific implementation, the communication request may be a registration request, a service request, or another request, and is not limited specifically. Different requests can be identified by different identification information.
And when the communication request is a registration request, the UE is not registered on the 5G core network before sending the first access request, and the registration request triggers the UE to complete registration on the 5G core network. When the communication request is a service request, the UE usually registers on the 5G core network before sending the first access request, and the service request triggers the 5G core network to process the related service.
And step 12, when the user terminal receives the information of rejecting the first access request sent by the 5G core network, initiating a second access request to the 4G core network, and communicating with the 4G core network.
In a specific implementation, after determining that the 5G core network cannot accept the first access request sent by the UE, the 5G core network may negotiate with the 4G core network, and transfer the communication request in the first access request to the 4G core network for processing. The 5G core network may send the information of rejecting the first access request to the UE through the 4G access network after the 4G core network agrees to accept the communication request in the first access request.
In general, an access network used when the 5G core network sends the information rejecting the first access request to the UE is the same as an access network used when the UE sends the first access request to the 5G core network, so in a specific implementation, the 5G core network may send the information rejecting the first access request to the UE through the 4G access network, or may send the information rejecting the first access request to the UE through the 5G access network.
In a specific implementation, the 5G core network may send the information rejecting the first access request to the UE in various manners, which is not limited herein.
In an embodiment of the present invention, the 5G core network may send the information rejecting the first access request to the UE through a Radio Resource Control (RRC) signaling sent by the 4G access network or the 5G access network to the UE. For example, the 5G core network may send the information rejecting the first access request to the UE through an RRC connection release message sent by the 4G access network or the 5G access network to the UE, that is, send the information rejecting the first access request to the user terminal in a release process of the radio connection.
In another embodiment of the present invention, the 5G core network may send the information rejecting the first Access request to the UE through Non-Access Stratum (NAS) signaling. At this time, the 4G access network or the 5G access network may transparently transmit NAS signaling sent by the 5G core network to the UE, so that the UE can receive the information rejecting the first access request.
In a specific implementation, the 5G core network may set, in the information rejecting the first access request, indication information of whether the 4G core network allows access, for example, may set, in a certain preset field in the information rejecting the first access request, indication information of whether the 4G core network allows access. And when the 4G core network allows the access, the UE initiates a second access request to the 4G core network to communicate with the 4G core network. When the 4G core network rejects the access, the UE may not initiate the second access request to the 4G core network.
In a specific implementation, the 5G core network may not set the indication information of whether the 4G core network allows the access in the information of rejecting the first access request. After receiving the information rejecting the first access request, the UE sends a second access request to the 4G core network without determining whether the 4G core network allows access according to the information rejecting the first access request.
In a specific implementation, after receiving the information rejecting the first access request, the UE may initiate a second access request to the 4G access network in a variety of ways, which is not limited specifically.
In an embodiment of the present invention, the UE may initiate the second access request to the 4G core network through the radio connection sending the first access request. That is, the UE may transmit the second access request using the radio connection while maintaining the radio connection transmitting the first access request.
In another embodiment of the present invention, when the UE initiates the second access request to the 4G core network, it may perform signaling interaction with the access network that sends the first access request first, so that the access network that sends the first access request releases the wireless connection that sends the first access request, and after the 4G access network or the 5G access network releases the wireless connection that sends the first access request, perform signaling interaction with the 4G access network, reestablish the wireless connection between the user terminal and the 4G access network, and initiate the second access request to the 4G core network through the reestablished wireless connection. That is, the UE may release the radio connection first, and then initiate the second access request to the 4G core network through the re-established radio connection.
And when the communication request is a registration request, the UE is not registered on the 4G core network before sending the second access request, and the registration request triggers the UE to complete registration on the 4G core network.
When the communication request is a service request, the UE may or may not have registered on the 4G core network before sending the first access request. When the UE is not registered on the 4G core network, before initiating the second access request to the 4G core network, the method further comprises: and the user terminal is registered on the 4G core network. And after the 4G core network receives the second access request, triggering the 4G core network to process related processing by the request type in the second access request.
In the following embodiments of the present invention, taking the example that the UE communicates with both the 5G core network and the 4G core network through the 4G access network, a detailed description is given to a specific signaling interaction process of the wireless communication method with reference to fig. 2 to 5. Fig. 2 to 4 illustrate communication requests included in the first access request and the second access request as service requests, and fig. 5 illustrates registration requests included in the first access request and the second access request as registration requests.
Fig. 2 is a schematic signaling interaction diagram of a wireless communication method according to an embodiment of the present invention. In a specific implementation, after receiving the information of rejecting the first access request from the 5G core network, the UE may send a second access request through a radio connection re-established with the 4G access network, and referring to fig. 2, a signaling interaction process of the radio communication method is as follows:
s201, wireless connection is established between the UE and the 4G/5G access network.
In a specific implementation, the UE may communicate with the 5G core network through the 4G access network, may also communicate with the 5G core network through the 5G access network, and may specifically be selected according to an actual network deployment situation.
S202, the UE sends a first access request to the 4G/5G access network.
S203, the 4G/5G access network sends the first access request to a 5G core network.
In specific implementation, the first access request includes destination address information, and the 4G/5G access network may transparently transmit the first access request to the 5G core network through the destination address information.
S204, the 5G core network sends the information of rejecting the first access request to the 4G/5G access network.
S205, the 4G/5G access network transmits the information rejecting the first access request to the UE.
And S206, after the 4G/5G access network receives the information of rejecting the first access request, releasing the wireless connection with the UE.
In a specific implementation, after the 4G/5G access network receives the information rejecting the first access request, multiple triggering manners may be set to release the wireless connection with the UE, and a specific triggering manner is not limited. For example, the radio connection with the UE may be released by sending a specific signaling, such as an RRC connection release message, to the UE, or may be released when monitoring that another preset trigger event occurs.
It can be understood that no matter what triggering method is adopted to trigger the 4G/5G access network to release the radio connection with the UE, no limitation to the present invention is formed and the present invention is within the protection scope of the present invention.
And S207, after receiving the information of rejecting the first access request, the UE adjusts the access 5G core network into the access 4G core network through internal coordination.
In a specific implementation, the execution sequence of step S206 and step S207 is not limited. That is, the wireless connection with the UE may be released by the 4G/5G access network first, and then the UE may adjust from the access 5G core network to the access 4G core network through internal coordination, or the UE may adjust from the access 5G core network to the access 4G core network through internal coordination first, and then the wireless connection with the UE may be released by the 4G/5G access network, or the 4G/5G access network and the UE may perform the above steps at the same time.
And after the wireless connection between the 4G/5G access network and the UE is released, the UE carries out internal coordination.
In this embodiment, the information of the first access request does not include indication information of whether the 4G core network allows access, and the UE immediately adjusts from accessing the 5G core network to accessing the 4G core network after receiving the information of rejecting the first access request.
And S208, the UE carries out signaling interaction with the 4G access network and reestablishes the wireless connection with the 4G access network.
And S209, after the wireless connection between the UE and the 4G access network is established, sending a second access request to the 4G access network through the reestablished wireless connection.
And S210, the 4G access network transmits the second access request to the 4G core network.
S211, the 4G core network sends a 4G core network agreement request to the 4G access network.
In a specific implementation, after receiving the second access request, the 4G core network sends a 4G core network grant request to the 4G access network if the UE grants access.
S212, the 4G access network transmits the 4G core network approval request to the UE.
After receiving the 4G core network agreement request, the UE may communicate with the 4G core network, and the 4G core network processes the corresponding service request.
Fig. 3 is a schematic signaling interaction diagram of another wireless communication method according to an embodiment of the present invention. In a specific implementation, after receiving the first access request, the 5G core network may first determine whether it can process the communication request, and when it cannot process the communication request, negotiate with the 4G core network, and after the 4G core network agrees to access, send information rejecting the first access request to the UE.
Specifically, referring to fig. 3, the signaling interaction procedure of the wireless communication method is as follows:
s301, wireless connection is established between the UE and the 4G/5G access network.
S302, the UE sends a first access request to the 4G/5G access network.
S303, the 4G/5G access network sends the first access request to the 5G core network.
In specific implementation, the first access request includes destination address information, and the 4G/5G access network may transparently transmit the first access request to the 5G core network through the destination address information.
S304, the 5G core network determines that it cannot process the communication request included in the first access request.
In a specific implementation, the 5G core network may determine whether it can process the communication request included in the first access request according to a network condition of the core network itself, and if it cannot process the communication request included in the first access request, execute step S305.
S305, the 5G core network negotiates with the 4G core network.
In a specific implementation, when the 5G core network cannot process the communication request included in the first access request, the 5G core network may transfer the first access request to the 4G core network, perform negotiation with the 4G core network, and determine whether the 4G core network can process the first access request. A particular negotiation process may involve multiple signaling interactions. When the 4G core network agrees to accept the first access request, step S306 is executed.
In a specific implementation, when the 5G core network determines that it cannot process the communication request included in the first access request, the 5G core network may directly transfer the first access request to the 4G core network without negotiating with the 4G core network, and step S306 is executed regardless of whether the 4G core network accepts the first access request.
S306, the 5G core network sends the information of rejecting the first access request to the 4G/5G access network.
In a specific implementation, after the 5G core network sends the information of rejecting the first access request to the 4G/5G access network, the context of the UE may need to be transferred to the 4G core network, so that the 4G core network processes the service request of the UE.
S307, the 4G/5G access network transmits the information rejecting the first access request to the UE.
S308, after receiving the information rejecting the first access request, the UE sends a second access request to the 4G access network.
In a particular implementation, the UE may maintain the radio connection established with the access network when sending the first access request and send a second access request to the 4G access network using the radio connection.
In this embodiment, the information of the first access request does not include indication information of whether the 4G core network allows access, and the UE immediately adjusts from accessing the 5G core network to accessing the 4G core network after receiving the information of rejecting the first access request.
S309, the 4G/5G access network transmits the second access request to the 4G core network.
S310, the 4G core network sends a 4G core network agreement request to the 4G/5G access network.
In a specific implementation, after receiving the second access request, the 4G core network sends a 4G core network grant request to the 4G access network if the UE grants access.
S311, the 4G access network transmits the 4G core network approval request to the UE.
After receiving the 4G core network agreement request, the UE may communicate with the 4G core network, and the 4G core network processes the corresponding service request.
Fig. 4 is a schematic signaling interaction diagram of a wireless communication method according to an embodiment of the present invention. In a specific implementation, before requesting the second access, the UE needs to register on the 4G core network before accessing the 4G core network.
Specifically, referring to fig. 4, the signaling interaction procedure of the wireless communication method is as follows:
s401, wireless connection is established between the UE and the 4G/5G access network.
S402, the UE sends a first access request to the 4G/5G access network.
And S403, the 4G/5G access network sends the first access request to a 5G core network.
In specific implementation, the first access request includes destination address information, and the 4G/5G access network may transparently transmit the first access request to the 5G core network through the destination address information.
S404, the 5G core network determines that it cannot process the communication request included in the first access request.
In a specific implementation, the 5G core network may determine whether it can process the communication request included in the first access request according to a network condition of the core network itself and the like, and if it cannot process the communication request included in the first access request, execute step S405.
S405, the 5G core network negotiates with the 4G core network.
In a specific implementation, when the 5G core network cannot process the communication request included in the first access request, the 5G core network may transfer the first access request to the 4G core network, perform negotiation with the 4G core network, and determine whether the 4G core network can process the first access request. A particular negotiation process may involve multiple signaling interactions. And executing step S406 when the 4G core network agrees to accept the first access request.
S406, the 5G core network sends the information of rejecting the first access request to the 4G/5G access network.
S407, the 4G/5G access network sends the information rejecting the first access request to the UE.
In a specific implementation, the information rejecting the first access request may be carried in RRC signaling, such as an RRC connection release message, sent by the 4G access network or the 5G access network to the UE, or may be carried in NAS signaling, which is not limited specifically.
In this embodiment, the information rejecting the first access request may include indication information of whether the 4G core network allows access. And the UE sends a second access request to the 4G core network according to the indication information when the 4G core network allows access.
In this embodiment, before sending the second access request to the 4G core network, steps S408, S409, and S410 are executed.
And S408, after the 4G/5G access network receives the information of rejecting the first access request, releasing the wireless connection with the UE.
And S409, the UE carries out signaling interaction with the 4G access network and reestablishes wireless connection with the 4G access network.
S410, the UE registers on the 4G access network.
In an implementation, if the UE is registered on the 4G access network before performing step 411, step S410 may not be required to be performed, as shown in fig. 2, 3 and 5.
S411, after the wireless connection between the UE and the 4G access network is established, a second access request is sent to the 4G access network through the reestablished wireless connection.
And S412, the 4G access network transmits the second access request to the 4G core network.
S413, the 4G core network sends a 4G core network agreement request to the 4G access network.
In a specific implementation, after receiving the second access request, the 4G core network sends a 4G core network grant request to the 4G access network if the UE grants access.
And S414, the 4G access network transmits the 4G core network approval request to the UE.
After receiving the 4G core network agreement request, the UE may communicate with the 4G core network, and the 4G core network processes the corresponding service request.
Fig. 5 is a schematic signaling interaction diagram of a wireless communication method according to an embodiment of the present invention. In a specific implementation, the UE does not register in the 4G core network and the 5G core network before the first access request is sent to the 5G core network, and thus does not establish a radio connection with the 4G/5G access network. The first access request sent by the UE to the 5G core network may include identification information of the registration request.
Specifically, referring to fig. 5, the signaling interaction procedure of the wireless communication method is as follows:
s501, the UE sends a first access request to the 4G/5G access network.
S502, the 4G/5G access network sends the first access request to a 5G core network.
In specific implementation, the first access request includes destination address information, and the 4G/5G access network may transparently transmit the first access request to the 5G core network through the destination address information.
The 5G core network may determine whether to allow the UE to register itself according to factors such as its network condition. When the UE cannot be allowed to register itself, the first access request may be transferred to the 4G core network, and the first access request may negotiate with the 4G core network to determine whether the 4G core network can process the first access request. A particular negotiation process may involve multiple signaling interactions. The 5G core network may also transfer the first access request to the 4G core network without negotiating with the 4G core network.
When the 5G core network decides to transfer the first request to the 4G core network, step S503 is performed.
S503, the 5G core network sends the information rejecting the first access request to the 4G/5G access network.
In a specific implementation, after the 5G core network sends the information rejecting the first access request to the 4G/5G access network, the context of the UE may need to be transferred to the 4G core network, so that the 4G core network processes the registration request of the UE.
S504, the 4G/5G access network sends the information of rejecting the first access request to the UE.
In a specific implementation, the information for rejecting the first access request may be carried in NAS signaling, or may be carried in other messages sent by the 4G access network or the 5G access network to the UE, which is not limited specifically.
In this embodiment, the information rejecting the first access request may include indication information of whether the 4G core network allows access. And the UE sends a second access request to the 4G core network according to the indication information when the 4G core network allows access.
Depending on the specific situation, there may be a release procedure for the 5G radio connection and a procedure for the 4G radio connection establishment. If the 4G base station to which the UE is connected to the 5G core network and the 4G core network at the same time, the 5G radio connection may be released first and then the 4G radio connection may be established, or the 5G radio connection may not be released.
And S505, the UE sends a second access request to the 4G access network.
S506, the 4G access network transmits the second access request to the 4G core network.
And S507, the 4G core network sends a 4G core network agreement request to the 4G access network.
In a specific implementation, after receiving the second access request, the 4G core network sends a 4G core network agreement request to the 4G access network if the UE agrees to be on the 4G core network.
And S508, the 4G access network transmits the 4G core network approval request to the UE.
After receiving the 4G core network agreement request, the UE may communicate with the 4G core network to complete registration in the 4G core network.
In the embodiment of the present invention, the 5G access network and the access network of the 5G core network may be an access network based on a 5G air interface technology, or may be a Long Term Evolution (LTE-) access network based on a 4G air interface technology. The 4G access network, the access network of the 4G core network, is the access network based on LTE air interface technology. In actual deployment, a base station of the 5G access network and a base station of the 4G access network may be the same base station, and the base stations are simultaneously connected to the 5G core network and the 4G core network based on an LTE air interface technology.
As can be seen from the above, in the wireless communication method in the embodiment of the present invention, when receiving the information of rejecting the first access request sent by the 5G core network, the user terminal initiates the second access request to the 4G core network to communicate with the 4G core network, and does not need to manually initiate access by the user, so that user operations can be reduced, the access success rate perceived by the user is improved, and user experience is improved.
In order to make those skilled in the art better understand and implement the present invention, the following detailed description is made on a wireless communication device, a computer readable medium and a user terminal corresponding to the above wireless communication method.
Fig. 6 is a wireless communication device 60 according to an embodiment of the present invention, which is disposed in a user terminal. The wireless communication device 60 may include: a first transmitting unit 61, a receiving unit 62 and a second transmitting unit 63. Wherein:
the first sending unit 61 is adapted to send a first access request to a 5G core network;
the receiving unit 62 is adapted to receive the information of rejecting the first access request sent by the 5G core network;
the second sending unit 63 is adapted to initiate a second access request to the 4G core network to communicate with the 4G core network when receiving the information of rejecting the first access request sent by the 5G core network;
the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
In a specific implementation, the first sending unit 61 is adapted to send the first access request to a 5G core network through a wireless connection with a 4G access network or a 5G access network.
In a specific implementation, the second sending unit 63 is adapted to initiate a second access request to the 4G core network through a wireless connection with the 4G access network.
In an embodiment of the present invention, the second sending unit 63 may include: a wireless connection release subunit (not shown) and a transmit subunit (not shown). Wherein:
the wireless connection release subunit is adapted to perform signaling interaction with the access network that sends the first access request, so that the access network that sends the first access request releases the wireless connection that sends the first access request;
the sending subunit is adapted to perform signaling interaction with the 4G access network after the 4G access network releases the wireless connection sending the first access request, reestablish the wireless connection between the user terminal and the 4G access network, and initiate a second access request to the 4G core network through the reestablished wireless connection.
In a specific implementation, the information for rejecting the first access request is sent by the 5G core network to the user terminal through the 4G access network or the 5G access network.
In an embodiment of the present invention, the information for rejecting the first access request is sent to the user terminal by an RRC signaling sent by the 5G core network to the user terminal through the 4G access network or the 5G access network.
In another embodiment of the present invention, the information rejecting the first access request is sent to the user equipment by the 5G core network through NAS signaling.
In a specific implementation, the wireless communication device 60 may further include: a registration unit 64. The registration unit 64 is adapted to register on the 4G core network before initiating the second access request to the 4G core network.
In an embodiment of the present invention, the information of rejecting the first access request received by the receiving unit 62 includes: indication information of whether the 4G core network allows access.
In a specific implementation, the indication information of whether the 4G core network allows access is determined by negotiation between the 5G core network and the 4G core network.
In a specific implementation, the communication request includes any one of: a service request or a registration request.
The embodiment of the present invention further provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the wireless communication method in the above-mentioned embodiment are executed.
In particular implementations, the computer-readable storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
The embodiment of the present invention further provides a user terminal, which may include a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to perform the steps of the wireless communication method in the foregoing embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (22)
1. A method of wireless communication, comprising:
a user terminal sends a first access request to a 5G core network; after determining that the 5G core network cannot accept the first access request sent by the UE, the 5G core network determines whether the 4G core network allows access through negotiation with the 4G core network, and sends information for rejecting the first access request to the user terminal after the 4G core network allows access;
when the user terminal receives the information of rejecting the first access request sent by the 5G core network, a second access request is sent to the 4G core network, and the user terminal communicates with the 4G core network;
the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
2. The wireless communication method of claim 1, wherein the user terminal sends the first access request to a 5G core network over a wireless connection with a 4G access network or a 5G access network.
3. The wireless communication method of claim 2, wherein the user terminal initiates the second access request to a 4G core network over a wireless connection with a 4G access network.
4. The wireless communication method of claim 2, wherein the initiating the second access request to the 4G core network comprises:
performing signaling interaction with the access network sending the first access request, so that the access network sending the first access request releases the wireless connection sending the first access request;
and after the 4G access network releases the wireless connection for sending the first access request, performing signaling interaction with the 4G access network, reestablishing the wireless connection between the user terminal and the 4G access network, and initiating a second access request to the 4G core network through the reestablished wireless connection.
5. The wireless communication method of claim 1, wherein a 5G core network sends the information rejecting the first access request to the user terminal through a 4G access network or a 5G access network.
6. The wireless communication method according to claim 5, wherein the 5G core network sends the information rejecting the first access request to the user terminal through RRC signaling sent by a 4G access network or a 5G access network to the user terminal.
7. The wireless communication method of claim 5, wherein the 5G core network sends the information rejecting the first access request to the user terminal through NAS signaling.
8. The wireless communication method of claim 1, wherein the user terminal, prior to initiating the second access request to the 4G core network, further comprises:
and the user terminal is registered on the 4G core network.
9. The wireless communication method according to any of claims 1 to 8, wherein the information rejecting the first access request comprises: indication information of whether the 4G core network allows access.
10. The wireless communication method of claim 9, wherein the communication request comprises any one of: a service request or a registration request.
11. A wireless communication device is provided in a user terminal; the method comprises the following steps:
the first sending unit is suitable for sending a first access request to the 5G core network; after determining that the 5G core network cannot accept the first access request sent by the UE, the 5G core network determines whether the 4G core network allows access through negotiation with the 4G core network, and sends information for rejecting the first access request to the user terminal after the 4G core network allows access;
the receiving unit is suitable for receiving the information which is sent by the 5G core network and refuses the first access request;
the second sending unit is suitable for initiating a second access request to the 4G core network and communicating with the 4G core network when receiving the information which is sent by the 5G core network and rejects the first access request;
the user terminal simultaneously supports a 5G core network and a 4G core network; the first access request and the second access request both include identification information of the same communication request.
12. The wireless communication apparatus of claim 11, wherein the first sending unit is adapted to send the first access request to a 5G core network over a wireless connection with a 4G access network or a 5G access network.
13. The wireless communications apparatus of claim 12, wherein the second sending unit is adapted to initiate a second access request to a 4G core network over a wireless connection with a 4G access network.
14. The wireless communication apparatus of claim 12, wherein the second transmitting unit comprises:
a wireless connection release subunit, adapted to perform signaling interaction with the access network that sends the first access request, so that the access network that sends the first access request releases the wireless connection that sends the first access request;
and the sending subunit is adapted to perform signaling interaction with the 4G access network after the 4G access network releases the wireless connection for sending the first access request, reestablish the wireless connection between the user terminal and the 4G access network, and initiate a second access request to the 4G core network through the reestablished wireless connection.
15. The wireless communications apparatus of claim 11, wherein the information denying the first access request is sent by a 5G core network to the user terminal over a 4G access network or a 5G access network.
16. The wireless communications apparatus of claim 15, wherein the information denying the first access request is sent to the user terminal by a 5G core network through RRC signaling sent by a 4G access network or a 5G access network to the user terminal.
17. The wireless communications apparatus of claim 15, wherein the information denying the first access request is sent by a 5G core network to the user terminal via NAS signaling.
18. The wireless communications apparatus of claim 11, further comprising:
and the registration unit is suitable for registering on the 4G core network before initiating the second access request to the 4G core network.
19. The wireless communication apparatus according to any of claims 11 to 18, wherein the information for rejecting the first access request received by the receiving unit includes: indication information of whether the 4G core network allows access.
20. The wireless communications apparatus of claim 19, wherein the communication request comprises any of: a service request or a registration request.
21. A computer-readable storage medium, on which a computer program is stored, which computer program is executable by a processor for carrying out the steps of the method according to any one of claims 1 to 10.
22. A user terminal, characterized in that it comprises a memory and a processor, said memory having stored thereon a computer program operable on said processor, when executing said computer program, performing the steps of the method according to any one of claims 1 to 10.
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| WO2020154622A1 (en) * | 2019-01-24 | 2020-07-30 | Apple Inc. | System and method for operation of enhanced machine type communication (emtc) and narrow band internet-of-things (nb-iot) user equipments (ues) when connected to 5g core network (5gcn) |
| US11510267B2 (en) * | 2019-04-05 | 2022-11-22 | T-Mobile Usa, Inc. | Efficient Evolved Packet System (EPS) fallback |
| CN112039831B (en) * | 2020-03-10 | 2023-05-12 | 宇龙计算机通信科技(深圳)有限公司 | Voice calling method, device, storage medium and terminal |
| CN112399517B (en) * | 2020-12-02 | 2022-08-26 | 中国联合网络通信集团有限公司 | Terminal switching method and system |
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