Switching method and communication device

A technology for switching commands and devices, applied in wireless communication, electrical components, etc., can solve problems affecting user service experience, terminal device data loss, etc.

Pending Publication Date: 2021-08-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the communication systems where the source network device and the target network device are located do not process data in the same way, there may be a problem of data loss on the terminal device during the cross-system handover process, which will affect the user's service experience

Method used

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  • Switching method and communication device
  • Switching method and communication device
  • Switching method and communication device

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Embodiment Construction

[0089] In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0090] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide i...

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Abstract

The invention discloses a switching method and a communication device. The method comprises the steps: transmitting at least one data packet which is not successfully received by terminal equipment to target network equipment after source network equipment transmits a switching command to the terminal equipment, so as to enable the terminal equipment to access the target network equipment, and the target network device sends the at least one data packet received from the source network device to the terminal device. Since the data packets forwarded by the source network equipment to the target network equipment comprise the data packets which have been subjected to PDCP processing by the source network equipment but do not receive the acknowledgement response of the terminal equipment, data loss of the terminal equipment in a cross-system switching process can be effectively avoided.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a handover method and a communication device. Background technique [0002] When a terminal device moves between coverage areas of different communication systems, inter-system handover occurs. When performing cross-system switching, the terminal device will first disconnect the data transmission with the source network device, and then perform data transmission with the target network device after connecting to the target network device. If the communication systems where the source network device and the target network device are located do not process data in the same way, there may be a problem of data loss on the terminal device during the cross-system handover process, which affects the user's service experience. Contents of the invention [0003] Embodiments of the present application provide a handover method and a communication device, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0005H04W36/14H04W36/023H04W36/00698H04W36/0016
Inventor 王瑞韩锋戴明增
Owner HUAWEI TECH CO LTD
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