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Switching method and device and data processing method and device

A data and handover request technology, applied in the field of communication, can solve problems such as data loss, and achieve the effect of improving communication quality

Active Publication Date: 2013-09-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a switching method and device, and a data processing method and device to at least solve the problem of data loss caused by different standards of different wireless access technologies when switching between different wireless access technologies in the related art question

Method used

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  • Switching method and device and data processing method and device
  • Switching method and device and data processing method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0041] In this example, the handover method from the EUTRAN system to the UTRAN system is taken as an example, such as Figure 4 As shown, the switching method includes step S402 to step S420.

[0042] Step S402: the source eNodeB makes a handover decision according to real-time information, and prepares for handover between different RATs.

[0043] Step S404: the source eNodeB sends a handover request (Handover Required) to the source MME, the handover request carries the PDCP uplink sequence number and / or downlink sequence number, and indicates that the downlink data stored in the source eNodeB needs to be forwarded.

[0044] Step S406: The source MME sends the session context and the uplink sequence number and / or downlink sequence number of the source PDCP to the target SGSN by forwarding a relocation request (Forward Relocation Request).

[0045] Step S408: The target SGSN sends a relocation request (Relocation Request) to the target RNC to request allocation of radio net...

example 2

[0053] In this example, the handover method from the UTRAN system to the EUTRAN system is taken as an example, such as Figure 5 As shown, the handover method includes step S502 to step S520.

[0054] Step S502: the source RNC makes a handover decision based on real-time information, and prepares for handover between different RATs.

[0055] Step S504: The source RNC sends a relocation request to the source SGSN, the relocation request carries the PDCP uplink sequence number and / or downlink sequence number, and indicates that downlink data stored in the source RNC needs to be forwarded.

[0056] Step S506: The source SGSN sends the session context and the uplink sequence number and / or downlink sequence number of the source PDCP to the target MME by forwarding the relocation request.

[0057] Step S508: the target MME sends a handover request to the target eNodeB to establish a radio bearer, and sends the uplink sequence number and / or downlink sequence number of the source PDC...

Embodiment 2

[0066] This embodiment provides a switching device, Image 6 is a structural block diagram of a switching device according to an embodiment of the present invention, such as Image 6 As shown, the handover device includes: a first sending module 602, configured to send a handover request to the target base station, wherein the handover request carries the uplink sequence number and / or downlink sequence number of the packet data convergence protocol PDCP, the source base station and the target base station The wireless access technology adopted by the base station is different; the second sending module 604 is connected to the first sending module 602, and is used to send the uplink sequence number and / or downlink sequence number of the PDCP to the target base station after receiving the confirmation message of the request. The data corresponding to the number is sent to the target base station; the handover module 606 is connected to the second sending module 604, and is used ...

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Abstract

The invention provides a switching method and device and a data processing method and device. The switching method comprises following steps: a source base station sends a switching request to a target base station, wherein the switching request carries an uplink serial number and / or a downlink serial number of a PDCP, and the source base station and the target base station are different in a wireless access technology; a confirm message towards the request of the target base station is received by the source base station, then a data corresponding to the uplink serial number and / or the downlink serial number of the PDCP is sent to the target base station; and the source base station switches a UE to the target base station. A problem of a loss of the data caused by differences of criteria of different wireless access technologies when the switching is conducted between different wireless access technologies is solved so as to ensure that the loss of the data does not occur during the switching and improve a network communication quality.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a switching method and device, and a data processing method and device. Background technique [0002] At present, in order to provide users with an uninterrupted mobility user experience in the Evolved UMTS Territorial Radio Access Network (Evolved UMTS Territorial Radio Access Network, referred to as EUTRAN), a key feature that needs to be implemented is seamless handover, LTE ( The Long Term Evolution (Long Term Evolution) system supports this function not only covering LTE cells with the same frequency, but also extending to cells using different frequencies, as well as cells of many other radio access technologies. However, in the evolved access network EUTRAN and When switching between different radio access technologies between 2G / 3G networks, due to the different standards of different radio access technologies, for example, PDCP (Packet Data Convergence) used in differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/18
CPCH04W36/0016H04W36/1443
Inventor 刘智鹏
Owner ZTE CORP
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