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Compound synchronization control method of multi-frequency time division multiple access satellite communication system

A satellite communication system, multi-frequency time division multiple access technology, applied in the system field of MF-TDMA mesh networking, to achieve the effect of improving network access speed

Active Publication Date: 2012-07-04
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

It has the fast initial acquisition timing of each station in the system and the precise synchronization and maintenance timing of various earth stations with different transmitting and receiving capabilities, and effectively solves the problem of a large number of earth stations entering the network at the same time

Method used

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  • Compound synchronization control method of multi-frequency time division multiple access satellite communication system
  • Compound synchronization control method of multi-frequency time division multiple access satellite communication system
  • Compound synchronization control method of multi-frequency time division multiple access satellite communication system

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Experimental program
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Embodiment Construction

[0019] refer to figure 1 , figure 2 , The present invention includes 1. Comprehensive utilization of various time slot channels under the cooperation of frame plan, 2. Determination of synchronization control mode, 3. Initial acquisition design, 4. Synchronization maintenance design.

[0020] Multi-carrier frame structure such as figure 2 as shown, figure 2 It is a schematic diagram of the multi-carrier frame structure of the present invention. The system sets free data time slots in the data time slots of each carrier. If the business station has no business transmission on the on-duty carrier of the station for a long time, the master station will regularly allocate a free data time slot channel for it. After the service station obtains the free data time slot channel, if there is non-real-time service transmission, it can transmit service data; if there is no service data transmission, it will send dummy data. In the present invention, the station with self-transmis...

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PUM

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Abstract

The invention discloses a compound synchronization control method of a multi-frequency time division multiple access satellite communication system, which relates to a synchronization control technology in the field of satellite communication. The compound synchronization control method adopts the method which combines auxiliary distance measurement with self-distance measurement, thereby being capable of effectively realizing the rapid initial capture timing of the system and effectively solving the simultaneously network access problem of a large number of earth stations; and the compound synchronization control method adopts the designed method which combines main station auxiliary closed-loop control with self-transmitting and self-receiving closed-loop control, thereby effectively realizing the precise synchronization and keeping timing of multiple types of the earth stations with different transmitting and receiving capabilities. The compound synchronization control method has the advantages of fast network access speed, multiple synchronization control ways, ability of adapting to a plurality of station types for working in a same network, no restriction by the capacity of the network and the like, thereby being particularly applicable to a multi-frequency time division multiple access mesh network system which is based on a satellite transparent transponder for communication.

Description

technical field [0001] The invention relates to a synchronous control method in the field of multi-frequency time division multiple access (MF-TDMA) satellite communication, and is especially suitable for the MF-TDMA mesh networking system based on satellite transparent transponder communication. Background technique [0002] The MF-TDMA satellite communication system has flexible access and switching capabilities, flexible network structure and virtual subnet capabilities, efficient satellite resource utilization and network expansion capabilities, and can better meet the needs of medium-rate nodes and data services. The main network communication between users is gradually widely used in domestic and foreign satellite communications. It is a two-dimensional multiple access method that combines frequency division and time division. It uses frequency hopping to send and receive, variable rate and virtual circuit The technology can realize flexible networking between large an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/204
Inventor 郝学坤孙晨华李冬浩赵丽辉李辉吴果刘冀陈杰
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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