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Downlink data sending method and base station

A technology of downlink data and transmission method, applied in the field of downlink data transmission method and base station, can solve the problems of affecting user experience, prolongation of user plane data packet interruption, poor user handover experience, etc., so as to improve experience and reduce interruption. Delay, reduce the effect of message interaction process

Active Publication Date: 2012-03-21
ZTE CORP
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AI Technical Summary

Problems solved by technology

In this process, the control plane user entity needs to send a message to notify the user plane user entity to send data after receiving the RRC connection reconfiguration completion message of the user plane user entity, resulting in a long interruption delay of the user plane data packet , affecting the user's experience when switching
Especially in the LTE system, when the handover can only use hard handover, the extension of the user plane interruption will cause bad handover experience to the user

Method used

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  • Downlink data sending method and base station
  • Downlink data sending method and base station
  • Downlink data sending method and base station

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0029] In the LTE system of the related art, after the handover is completed, the target base station (such as the target eNB) control plane user entity receives the RRC connection reconfiguration completion message sent by the user plane user entity, and then notifies the base station user plane user entity to perform The process of downlink data transmission will lead to the problem of long delay of user plane data interruption of the base station. The solution of the present invention is proposed to shorten the problem of long delay of user plane data downlink interruption caused by the related technology. One of the core ideas of the present invention is that in the above scenario, on the target ...

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Abstract

The invention discloses a downlink data sending method and a base station, wherein the method comprises the following steps that: uplink dedicated information sent by user equipment (UE) corresponding to a user entity is received by the user entity of a base station user plane, and the uplink dedicated information is used for indicating that the UE is successfully accessed to the base station; according to triggering of the uplink dedicated information, the downlink data is dispatched and sent to the UE by the user entity of the base station user plane. By means of the invention, the effects of decreasing interrupt delay of the user plane during a switchover process and improving user experience during the switchover process can be achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for sending downlink data on a user plane after UE (User Equipment, user equipment) handover in LTE (Long Term Evolution, long term evolution), and a base station. Background technique [0002] In the LTE system, the user plane protocol stacks of UE and eNB (Evolved NodeB, evolved Node B) are as follows: figure 1 As shown, it is divided into four layers: PDCP (Packet Data Convergence Protocol, packet data convergence protocol), RLC (Radio Link Control, radio link control), MAC (Medium Access Control, medium access control), and PHY (Physical layer, physical layer) . User data is sequentially transmitted down from the PDCP layer of the UE to the PHY layer, and then uploaded from the PHY layer of the eNB to the PDCP layer of the eNB. During handover, the data that has not been sent above the PDCP layer needs to be buffered and sent to the target cell through data forwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/12
Inventor 王新台
Owner ZTE CORP
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