BACKGROUND

Currently, there are three ways for handover between network elements: a way in which the handover is determined by a Radio Access Network (RAN) in a registration process; the way in which a redirection to a target Access and Mobility Management Function (AMF) is triggered after an original AMF receives a Non-Access Stratum (NAS) message; and a way in which 5-th Generation (5G) and 4-th Generation (4G) Global Unique Temporary Identities (GUTIs) are used.

However, in the above solutions, there is a problem that the handover between network elements performed by a UE will be limited by the current process of the UE. As a result, it causes problems such as insufficient convenience for of the handover between network elements by the UE.

SUMMARY

The present disclosure relates to the field of information processing technology, and in particular, to a method for handover between network elements, a method for network element selection, User Equipment (UE), a network element, and a computer storage medium.

The embodiments of the disclosure provide a method for handover between network elements, applied to User Equipment (UE), including:

initiating a request message to a network side, where the request message includes information of a second network element, which is carried in an Access Stratum (AS), so that the network side is capable of transmitting the request message to a corresponding network element according to the information of the second network element; the request message further comprises at least one of: information of a first network element or the information of the second network element, which is carried in a Non-Access Stratum (NAS).

The embodiment of the disclosure provide a method for network element selection, applied to User Equipment (UE), including:

when the UE transmits a second message, if there is network slice information and Globally Unique Temporary Identity (GUTI) information, carrying the network slice information in at least one of an Access Stratum (AS) or a Non-Access Stratum (NAS), and not carrying the GUTI information;

Or,

when the UE transmits a second message, if there is network slice information and GUTI information, carrying the GUTI information in at least one of the AS or the NAS, and not carrying the network slice information.

The embodiments of the disclosure provide a method for handover between network elements, applied to a first network element, including:

determining to switch User Equipment (UE) to a second network element; and

transmitting a configuration request message to the UE.

The embodiments of the disclosure provide a method for network element selection, applied to a first network element, including:

receiving a second message from User Equipment (UE), where the UE carries network slice information in at least one of an Access Stratum (AS) or a Non-Access Stratum (NAS), and does not carry Globally Unique Temporary Identity (GUTI) information; and, selecting a core network element according to the network slice information;

Or,

receiving a second message from UE, where the UE carries GUTI information in at least one of the AS or the NAS, and does not carry network slice information; and, selecting a core network element according to the GUTI information.

The embodiments of the disclosure provide User Equipment (UE), including:

A first communication unit, is configured to initiate a request message to a network side, where the request message comprises information of a second network element, which is carried in an AS, so that the network side is capable of transmitting the request message to a corresponding network element according to the information of the second network element; the request message further comprises at least one of: information of a first network element or the information of the second network element, which is carried in a NAS.

The embodiments of the disclosure provide a first network element, including:

a second processing unit, configured to determine to switch User Equipment (UE) to a second network element; and

a second communication unit, configured to transmit a configuration request message to the UE.

The embodiments of the disclosure provide UE, including:

a third communication unit, configured to, when transmitting a second message and if there is network slice information and Globally Unique Temporary Identity (GUTI) information, carry the network slice information in at least one of an Access Stratum (AS) or a Non-Access Stratum (NAS), and not carry the GUTI information;

Or,

when transmitting a second message, if there is network slice information and GUTI information, carry the GUTI information in at least one of the AS or the NAS, and not carry the network slice information.

The embodiments of the disclosure provide a first network element, including:

a fourth communication unit, configured to receive a second message from User Equipment (UE), where the UE carries network slice information in at least one an AS or a NAS, and does not carry GUTI information;

a fourth processing unit, configured to select a core network element according to the network slice information;

Or,

a fourth communication unit, configured to receive a second message from UE, where the UE carries GUTI information in at least one of the AS or the NAS, and does not carry network slice information; and

a fourth processing unit, configured to select a core network element according to the GUTI information.

The embodiments of the disclosure provide User Equipment UE, including a processor and a memory storing a computer program,

where the processor is configured to implement operations of the aforementioned methods when the computer program is executed by the processor.

The embodiments of the disclosure provide a network element, including a processor and a memory storing a computer program executable by the processor,

where the processor is configured to implement operations of the aforementioned methods when the computer program is executed by the processor.

The embodiments of the disclosure provide a computer storage medium having stored thereon computer-executable instructions that, when executed, cause operations of the aforementioned methods to be performed.

By technical solutions of the embodiments of the disclosure, it is possible to hand over between the network elements corresponding to UE based on a request information. As such, the handover between network elements may be implemented immediately without being limited by the current process of the UE. For instance, the UE is redirected to improve the processing efficiency of the UE.

