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Data transmission method and device, storage medium and terminal

A data transmission method and data transmission technology, applied in the field of data transmission method and device, terminal, storage medium, capable of solving problems such as failure

Active Publication Date: 2020-06-16
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, UE communication also has a high probability of failure

Method used

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  • Data transmission method and device, storage medium and terminal
  • Data transmission method and device, storage medium and terminal

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Embodiment Construction

[0031] As mentioned in the background art, due to the limitation of cell movement, the failure rate of a UE to complete a communication task is relatively high. Wherein, completing a communication task may refer to a process of accessing a network and completing communication, such as completing a random access process.

[0032] Specifically, NB-IoT terminals will not be equipped with satellite parabolic antennas and direction tracking systems, but will generally use ordinary omnidirectional antennas. For a common omnidirectional antenna, the uplink requires a single carrier of 3.75kHz, so the duration of the transmission block is relatively long. In NB-IoT, one transmission of one transmission block with a single carrier at 3.75kHz needs to last for 32ms.

[0033] Furthermore, the signal of the satellite system is weak, and the satellite at an altitude of 1200km may reach about -140dbm. However, a transmission block signal needs to be repeated hundreds of times, combined wi...

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Abstract

The present invention provides a data transmission method and device, a storage medium and a terminal, the method comprising: determining whether remaining time residing in a current cell is greater than a preset threshold, the preset threshold being used for characterizing the minimum time required to complete minimum data transmission; and when the judgment result shows that the remaining time is greater than the preset threshold, transmitting the data. Through the scheme of the invention, the data transmission success rate can be effectively improved, and the probability of completing one communication task is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a data transmission method and device, a storage medium, and a terminal. Background technique [0002] In a medium-to-low altitude satellite system, in a scene where a cell moves on the ground, a beam is visible to a user equipment (User Equipment, UE for short) for a very short time. Taking a beam of 60 km in diameter from a satellite at an altitude of 1200 km as an example, the visible time of a beam to a UE is usually 11 seconds (s). [0003] However, it takes a long time to complete a communication, which may occupy half or more of the visible time of the beam. [0004] For the process of UE accessing the network and completing communication, when a cell is composed of a beam, this process may go through two or more cells, while Narrow Band Internet of Things (NB-IoT) does not Support cell switching. Therefore, a communication of the UE may fail with a hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W84/06
CPCH04W72/046H04W84/06H04W72/53
Inventor 顾祥新
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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