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Data transmission method based on ROHC compression in satellite communication

A data transmission method and satellite communication technology, applied in the direction of transmission modification based on link quality, digital transmission system, transmission system, etc., can solve the problems of large wireless channel bandwidth, redundancy, and reduce the effectiveness of communication systems, etc., to improve the frequency spectrum Utilization, the effect of solving link overhead

Inactive Publication Date: 2020-02-21
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applying the 4G LTE protocol stack directly to the satellite communication system will result in the transmission of data packets with redundant headers between the satellite base station and the ground gateway station, occupying a large wireless channel bandwidth and reducing the effectiveness of the communication system
Therefore, the effectiveness of the data transmission method for the satellite communication system needs to be further improved.

Method used

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  • Data transmission method based on ROHC compression in satellite communication
  • Data transmission method based on ROHC compression in satellite communication
  • Data transmission method based on ROHC compression in satellite communication

Examples

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Effect test

Embodiment 1

[0035] The low-orbit satellite voice communication system based on the data transmission method based on ROHC compression in satellite communication of the present invention is as follows: figure 2 As shown, the altitude of its communication satellite orbit is 1200km, and it provides users with voice transmission services together with the ground communication network.

[0036] In the communication system, the user segment terminal is the mobile phone A, the space segment satellite base station is the low-orbit communication satellite B, and the ground segment gateway station is the gateway station C. The specific scenario is: the mobile phone A is transferred to the ground gateway station C through the low-orbit communication satellite B, and connected to the ground communication network; the uplink data transmission is carried out to the ground gateway station C through the low-orbit satellite base station B. In this scenario, the specific implementation of the satellite sy...

Embodiment 2

[0046] The LEO satellite voice communication systems involved are as follows: figure 2 As shown, the altitude of its communication satellite orbit is 1200km, and it provides users with voice transmission services together with the ground communication network.

[0047] In the communication system, the user segment terminal is the mobile phone A, the space segment satellite base station is the low-orbit communication satellite B, and the ground segment gateway station is the ground gateway station C. The specific scenario is: the mobile phone A is transferred to the ground gateway station C through the low-orbit communication satellite B, and connected to the ground communication network; the ground gateway station C transmits downlink data to the user terminal mobile phone A through the low-orbit communication satellite B. In this scenario, the specific implementation of the satellite system downlink data transmission method described in the present invention includes the fol...

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Abstract

The invention relates to a data transmission method based on ROHC compression in satellite communication, and belongs to the technical field of satellite communication compression and data transmission. Uplink transmission comprises the following steps: a) a user terminal UE sends a session establishment request, and a ground gateway station allocates a TEID; b) data is compressed by a user terminal ROHC; c) the data is transmitted to a lower layer and is sent to a satellite base station; d) the satellite base station receives the data and processes the data to obtain an ROHC data packet; e) the satellite base station sends the data packet to a gateway station; f) the ROHC of the gateway station is decompressed to obtain data; downlink transmission comprises the following steps: 1) the UEsends a session establishment request, and the gateway station allocates a TEID; 2) the data is compressed by a gateway station ROHC, 3) a data packet is sent to a satellite base station by the gateway station, 4) the data is forwarded to UE by the satellite base station, and 5) the ROHC is decompressed by a user terminal to obtain the data, thereby reducing the satellite-ground feed link overheadof the 4G LTE protocol stack applied to a satellite communication system and improving the spectrum utilization rate.

Description

technical field [0001] The invention relates to a data transmission method based on ROHC compression in satellite communication, and belongs to the technical field of compression and data transmission in satellite communication. Background technique [0002] After a long period of commercial application, 4G LTE is already a very mature communication technology. With the continuous development of modern satellite mobile communication technology, satellite communication has the advantages of wide coverage, large capacity, and is not affected by geographical conditions, and has become one of the most potential mobile communication technologies in the future. At present, the integration of terrestrial mobile network and satellite communication network has become a hot research direction, and applying 4G LTE protocol stack to satellite communication system is an important research topic. [0003] Different from the traditional 4G LTE communication system where the base station a...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0023
Inventor 费泽松张校宁张亚生蒋逸凡赵海峰刘昊昱
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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