Method and device for bearer establishment

Abstract

Provided are a method and apparatus for establishing a bearer, wherein same relate to the technical field of communications and are used for ensuring that an address of a UE is unchanged when the UE moves from a first communication system to a second communication system, and saving on transmission resources at the same time. The method comprises: when a UE moves from a first communication system to a second communication system, a first core network device receiving a first request sent by a second core network device, wherein the first request is used for acquiring information about an EPS bearer, that is in the second communication system and corresponds to a PDU session, in the first communication system, of the UE; when it is determined that the PDU session is deactivated, the first core network device sending, to the second core network device, information about a default EPS bearer, corresponding to the PDU session, in the second communication system; the UE moving from the first communication system to the second communication system; and when the PDU session is in a deactivated state, the UE establishing, in the second communication system, the default EPS bearer corresponding to the PDU session.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for establishing a bearer. Background technique [0002] With the rapid development of communication technology, a variety of user equipment (UE) such as smartphones, tablet computers, and portable devices have emerged. These UEs can simultaneously support mobile communication networks of different switch between communication networks. For example, UE can move from the fifth generation (5th Generation, 5G) communication network to the fourth generation (Forth Generation, 4G) communication network. The 5G network is an extension of the 4G network and has the characteristics of high performance, low delay and high capacity. Its maximum data transmission speed can reach more than tens of Gbps. [0003] At present, the PDU session that has been established on the UE in the 5G network and is not currently in use can be d...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for establishing a bearer, which solves the waste of transmission resources caused by the PDU session that is deactivated by the user equipment in the first communication system and is activated because it moves to the second communication system in the prior art. problem, or only moving the active PDU session of the UE in the first communication system to the second communication system, causing the IP address of the UE to be released, improving user experience

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