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Data transmission method and device

A data transmission method and data transmission technology, which are applied in the field of data transmission methods and devices, can solve the problems of increasing air interface resource occupation, reducing NB-IoT system support for massive IoT terminals, and increasing signaling load, etc.

Active Publication Date: 2019-10-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a data transmission method and device to solve the problem that adopting the UP scheme in the existing network will increase the suspended / resume process and the probability of off-network re-search, increase the signaling load, increase the resources occupied by the air interface, and reduce the massive support of the NB-IoT system. The problem of the ability of IoT terminals

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  • Data transmission method and device
  • Data transmission method and device

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Embodiment 1

[0021] refer to figure 1 , which shows a flow chart of the steps of a data transmission method provided by an embodiment of the present invention, which may specifically include the following steps:

[0022] Step 101: Determine whether the terminal is currently a high-speed mobile terminal.

[0023] In the embodiment of the present invention, it can be applied to the NB-IoT system, and is an optimization scheme for terminals that move at high speed (for example, in scenarios such as railways) to use the UP scheme for data transmission.

[0024] In the scenario where the terminal is moving at high speed, since the terminal moves relatively fast, the stay time in a certain cell is relatively short. Therefore, it is necessary to first determine whether the terminal is currently in a high-speed moving state (such as high-speed rail, etc.).

[0025] In a preferred embodiment of the embodiment of the present invention, after the above step 101, it may further include:

[0026] Ste...

Embodiment 2

[0068] refer to figure 2 , which shows a schematic structural diagram of a data transmission device provided by an embodiment of the present invention, which may specifically include:

[0069] A high-speed mobile state judging module 210, configured to judge whether the terminal is currently in a high-speed mobile state;

[0070] A highest priority setting module 220, configured to pre-set the highest priority of the terminal when the terminal is in a high-speed moving state;

[0071] A data transmission service judging module 230, configured to judge whether the terminal has a data transmission service in the current cell;

[0072] A judging module 240, configured to judge whether the channel quality of the terminal is lower than a preset threshold when the terminal has a data transmission service in the current cell;

[0073] The service suspension module 250 is configured to receive the terminal offline information returned by the base station when the channel quality of...

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Abstract

The invention provides a data transmission method and a data transmission device. The data transmission method comprises the following steps: judging whether the terminal is currently in a high-speedmoving state or not, and presetting the highest priority of the terminal if the terminal is in the high-speed moving state; judging whether the terminal has a data transmission service in the currentcell or not; if the data transmission service exists, judging whether the channel quality of the terminal is lower than a preset threshold value or not; if the channel quality of the terminal is lowerthan a preset threshold value, receiving terminal offline information returned by the base station, and suspending the data transmission service of the terminal; performing an idle state cell reselection process on the terminal; and after the cell reselection succeeds, recovering the data transmission service of the terminal in the new cell. According to the embodiment of the invention, the probability of a Suspended / Resume process and off-network re-search is reduced, and the signaling load is reduced, so that the capability of the NB-IoT system to support a large number of Internet of Things terminals is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] With the development of communication technology, the Internet of Everything is becoming more and more important in life. The narrowband cellular Internet of Things (NB-IoT) system is currently being widely deployed and applied. It has wide coverage, large connections, low cost, and low power consumption. Features, suitable for IoT terminals with low sensitivity to service delay, small amount of transmitted data, and weak mobility. In terms of mobility, the NB-IoT system supports idle state same-frequency / different-frequency cell reselection and intra-system redirection, but does not support measurement and handover. [0003] In terms of data transmission, two optimization schemes are introduced: Control Plane Optimization (CP) and User Plane Optimization (UP). The CP scheme carries user data thr...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/08H04W36/30
CPCH04W36/0083H04W36/08H04W36/30
Inventor 李淑玲
Owner DATANG MOBILE COMM EQUIP CO LTD