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Data transmission method and device

A transmission method, data technology, applied in the field of communication

Active Publication Date: 2016-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0074] Embodiments of the present invention provide a data transmission method and device to at least solve the problem of how to optimize data forwarding in a dual-connection handover scenario in the related art

Method used

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Embodiment 1

[0278] Figure 11 It is a kind of based on the preferred embodiment 1 of the present invention Figure 5 Flowchart for optimizing data forwarding; Figure 12 is another based on the preferred embodiment 1 of the present invention Figure 5 Flowchart for optimizing data forwarding; Figure 13 It is another method based on the preferred embodiment 1 of the present invention Figure 5 Flowchart for optimizing data forwarding. This preferred embodiment is aimed at the above Figure 5 Data forwarding optimization during inter-MeNB switching SeNB unchanged, from SeNB to T-MeNB (ie SeNB→T-MeNB). In a preferred implementation process, what is transmitted in step 2 is the SeNB modification request message, and what is transferred in step 3 is the SeNB modification request confirmation message, that is, steps 2 and 3 are the initial SeNB modification preparation process of the MeNB. Of course, the above step 2 and step 3 may also be an enhanced SeNB addition preparation process, t...

Embodiment 2

[0294] Figure 14 It is a kind of based on the preferred embodiment 2 of the present invention Figure 5 Flowchart for optimizing data forwarding; Figure 15 is another method based on the preferred embodiment 2 of the present invention Figure 5 Flowchart for optimizing data forwarding. This preferred embodiment is aimed at the above Figure 5 Data forwarding optimization during inter-MeNB switching SeNB unchanged, from S-MeNB to SeNB (ie S-MeNB→SeNB). In a preferred implementation process, what is transmitted in step 2 is the SeNB modification request message, and what is transferred in step 3 is the SeNB modification request confirmation message, that is, steps 2 and 3 are the initial SeNB modification preparation process of the MeNB. Of course, the above step 2 and step 3 may also be an enhanced SeNB addition preparation process, that is, the SeNB addition request message is transmitted in step 2, and the SeNB addition request confirmation message is transmitted in ste...

Embodiment 3

[0308] Figure 16 is a preferred embodiment of the present invention based on Figure 6 Flowchart for optimizing data forwarding; Figure 17 is another preferred embodiment of the present invention based on Figure 6 Flowchart for optimizing data forwarding. This preferred embodiment is aimed at the above Figure 6 Data forwarding optimization in the process of adding SeNB after middle handover, from eNB to T-SeNB (ie eNB→T-SeNB).

[0309] In this preferred embodiment, if the T-MeNB needs to know whether there is an X2 interface between the eNB and the T-SeNB, the above-mentioned Figure 6 The signaling flow described in is modified as follows:

[0310] Modification method 1: T-SeNB judges whether there is an X2 interface between itself and the eNB, such as Figure 16 As shown, its main improvements are:

[0311] In step 2, the T-MeNB sends the SeNB addition request message to the T-SeNB to carry the information of the eNB, which is used to subsequently make the T-SeNB ...

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Abstract

The present invention provides a data transmission method and device. According to the embodiment of the invention, a first node directly sends itself forward pass address to a second node in the condition that whether there is an X2 interface between the first node and the second node by using the first node or not. The problem is solved that how to perform optimization of the data in a dual-connection switching scene in the prior art so as to enhance the flexibility and the practicality of the data forward pass.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] With the rapid development of wireless multimedia services, people's demand for high data rate and user experience is increasing, thus putting forward higher requirements for the system capacity and coverage of the traditional Long Term Evolution (LTE) cellular network . In a traditional LTE cellular network, a macro base station (eNB) serves as the only access-side network element to provide access services for user equipment (User Equipment, UE for short). In order to meet users' demands for higher data rates and improve the spectral efficiency of cellular networks, when deploying LTE cellular networks, operators deploy a large number of Low Power Nodes (LPN) as supplements to macro base stations, providing UEs with into the service. LPN has the characteristics of low cost, low power, and convenient deplo...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/08
CPCH04W36/0005H04W36/08H04W36/0069H04W36/02H04W36/0027H04W36/165H04W36/26H04W92/20
Inventor 吴蕴璐高音
Owner ZTE CORP
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