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Data transmission method and device used in satellite mobile communication system

A technology of satellite mobile communication and data transmission method, which is applied in the field of data transmission, and can solve problems such as unfavorable terminal power saving, short working cycle intervals, and limited total system capacity

Active Publication Date: 2014-04-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the existing LTE service transmission process, method 1 requires a complete bearer establishment process to transmit a small amount of data, which will cause problems such as increased service delay, system power consumption, and waste of air interface resources, especially when the satellite communication has a large air interface. The above-mentioned problems are more obvious in the extended system
Although method 2 improves the delay and can send data when needed, the terminal is always in the DTX / DRX state, and its working cycle interval is very short, which is not conducive to terminal power saving. Moreover, when a large number of terminals work at the same time, the overall system limited capacity

Method used

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  • Data transmission method and device used in satellite mobile communication system
  • Data transmission method and device used in satellite mobile communication system
  • Data transmission method and device used in satellite mobile communication system

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Embodiment Construction

[0037] In order to reduce the time delay of service data transmission in the satellite mobile communication system, an embodiment of the present invention provides a data transmission method in the satellite mobile communication system based on the LTE / LTE-A system.

[0038] see Figure 4 , the data transmission method in the satellite mobile communication system based on LTE / LTE-A system that the embodiment of the present invention provides, comprises the following steps:

[0039]Step 40: The network side notifies the terminal of the configuration information of the small data static common service channel (STSCCH) used for the small data static (STS) terminal to send data; here, the STS terminal may specifically be an Internet of Things terminal, etc., or other Terminals with static and small data transmission (less data transmission) characteristics; the network side can notify the terminal of STSCCH configuration information through system broadcast messages;

[0040] Ste...

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Abstract

The embodiment of the invention discloses a data transmission method and device used in a satellite mobile communication system, relates to the field of wireless communication, and aims to reduce time delay of business data transmission in the satellite mobile communication system. According to the invention, a network side maintains the activated state of wireless connection and wireless bearing of a small data static STS terminal after establishing wireless connection and wireless bearing for the STS terminal; when the STS terminal needs to send out uplink data, the STS terminal doesn't need to be connected again with the network side, but directly sends out the uplink data to the network side through a small data static public traffic channel STSCCH, so that signaling interaction between the STS terminal and the network side is reduced, the transmission of uplink data can be accelerated effectively and the air interface cost is lowered.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data transmission method and equipment in a satellite mobile communication system. Background technique [0002] In the satellite communication mobile communication system, according to the different satellite orbit positions, it is divided into Low Earth Orbit (LEO), Medium Earth Orbit (MEO) and Geosynchronous Orbit (GEO), the height of different orbit positions and the propagation to the ground The delay is shown in Table 1 below. [0003] GEOs MEO LEO track height 36000Km 5000~20000Km 500~1500Km single hop delay 120ms 17~67ms 2~5ms [0004] Table 1 [0005] In order to take advantage of the industrial advantages of terrestrial mobile communication systems, especially Long Term Evolution (LTE) / LTE-Advanced The Advanced system designs the fourth-generation satellite mobile communication system in the ...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04W84/06
Inventor 秦飞鲍炜张娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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