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Communication method and device

The technology of a communication device and a communication method is applied in the field of communication and can solve problems such as handover failure

Active Publication Date: 2021-06-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a communication method and device to solve the problem of existing handover failure

Method used

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Embodiment Construction

[0060] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] The application scenarios described in the embodiments of the present invention are to illustrate the technical solutions of the embodiments of the present invention more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present invention. It appears that the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems...

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Abstract

The invention provides a communication method and device which are used for solving the problem that switching from a 5G network to a 4G network fails. The method comprises that when a terminal device is switched from a first communication network to a second communication network, a first mobility management network element receives context information sent by a second mobility management network element, the first mobility management network element belonging to the second communication network, and the second mobility management network element belonging to the first communication network; and when the first mobility management network element determines that the context information does not include the session context of the terminal device, the first mobility management network element sends a first indication to the terminal device, the first indication being used for instructing the terminal device to initiate a public data network (PDN) connection process.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a communication method and device. Background technique [0002] With the development of the fifth generation mobile communication (5th generation mobile networks, 5G) technology, there are more and more users of the 5G network. Therefore, a terminal device (User Equipment, UE) may often switch between the coverage of the 5G network and the 4G network. The difference between the registration process of the fourth generation mobile networks (4G) and the registration process of 5G is that 4G has the "Always Online" function, that is, in the registration process of the 4G network, a user is established for the user. The default bearer with a fixed data rate guarantees its basic business requirements. [0003] When the UE is handed over from the 5G network to the 4G network, if the UE has not established a session in the 5G network, the handover will fail. That is to...

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Application Information

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IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0033H04W36/14
Inventor 吴鹏程
Owner DATANG MOBILE COMM EQUIP CO LTD