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Satellite mobile communication method and satellite mobile communication device based on satellite switch

A technology of satellite mobile communication and device pairing, which is applied in the field of satellite mobile communication and can solve problems such as large communication delays

Inactive Publication Date: 2013-07-03
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The way of ground forwarding is relatively simple, but because the communication between satellite terminals needs to be forwarded by means of the ground, which increases the number of communication hops, the communication delay is relatively large; Carry out direct exchange on the satellite. This method can realize one-hop forwarding of communication between satellite terminals without ground relay. Although the complexity of the system has increased, it greatly improves the flexibility of the system and reduces the communication cost. time delay

Method used

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  • Satellite mobile communication method and satellite mobile communication device based on satellite switch
  • Satellite mobile communication method and satellite mobile communication device based on satellite switch
  • Satellite mobile communication method and satellite mobile communication device based on satellite switch

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Embodiment 1

[0016] The specific embodiment of the present invention adopts such as figure 1 The basic satellite communication system shown is composed of satellites, satellite terminals, ground gateways and ground core networks. The ground gateway device is the ground communication network interface, and the communication from the satellite terminal to the ground network (such as PSTN, GSM, etc.) is relayed by the ground gateway. Communications between satellite terminals are exchanged on-board by satellite mobile communication devices. The following describes the registration flow and call flow of the satellite terminal in this embodiment.

[0017] (1) Satellite terminal registration / deregistration

[0018] Step a: After the satellite terminal is turned on, send a registration request message;

[0019] Step b: the satellite mobile communication device receives the registration request message, records the ID of the satellite terminal (the satellite mobile communication device maintain...

Embodiment 2

[0036] This embodiment adopts a kind of satellite mobile communication device, and its structural composition is shown in Figure 4 , including an uplink radio frequency module, a channel extraction module, a demodulation module, a decoding module, an on-board switching module, an encoding module, a modulation module, a channel combining module, and a downlink radio frequency module.

[0037] The uplink radio frequency module is responsible for receiving the uplink signal and inputting it into the channel extraction module; the channel extraction module is responsible for extracting the terminal signal from the uplink signal and inputting it into the demodulation module; the demodulation module is responsible for demodulating the terminal signal and inputting it into the decoding module; The decoding module is responsible for decoding the demodulated terminal signal to obtain terminal data and terminal signaling, and input it to the on-board switching module; the on-board switc...

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Abstract

The invention provides a satellite mobile communication method based on satellite switch. The satellite mobile communication method based on the satellite switch comprises the following steps: a satellite mobile communication device carries out base band demodulation and decoding on received terminal signals, terminal data and terminal signaling are obtained, the terminal voice signaling is analyzed, a terminal voice session is judged whether ground relaying is needed, if the terminal voice session needs the ground relaying, the satellite mobile communication device transmits the terminal voice data to a ground station; and if not, the satellite mobile communication device automatically triggers a communication process, and satellite direct switch is carried out. The invention further provides a satellite mobile communication device based on the satellite switch. The satellite mobile communication method and the satellite mobile communication device can support the satellite switch of sessions between satellite terminals, and achieve one-jump forwarding between the satellite terminals, and the involvement of the ground station in the communication process is not needed.

Description

technical field [0001] The invention relates to the field of satellite mobile communication, in particular to a satellite mobile communication method and device based on on-board switching. Background technique [0002] The existing satellite mobile communication technology is divided into ground forwarding and on-star switching. The way of ground forwarding is relatively simple, but because the communication between satellite terminals needs to be forwarded by means of the ground, which increases the number of communication hops, the communication delay is relatively large; Carry out direct exchange on the satellite. This method can realize one-hop forwarding of communication between satellite terminals without ground relay. Although the complexity of the system has increased, it greatly improves the flexibility of the system and reduces the communication cost. delay. [0003] The current on-board switching technology is only a simple analysis of the signal by the ground ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCY02D30/70
Inventor 宋永亮许瑞锋
Owner BEIJING XINWEI TELECOM TECH