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Satellite mobile communication system, method and device supporting simplex data collection service

A data acquisition system and satellite mobile communication technology, which is applied in the field of satellite communication, can solve problems such as system capacity reduction and system in-band noise increase, and achieve the effect of saving spectrum resources and flexible and simple implementation methods

Inactive Publication Date: 2016-06-01
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to implement a compatible data acquisition system for a satellite mobile communication system using code division multiple access, there are the following interference problems: (1) The two systems interfere with each other in-band, and the interfered system causes the system capacity reduction

Method used

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  • Satellite mobile communication system, method and device supporting simplex data collection service
  • Satellite mobile communication system, method and device supporting simplex data collection service
  • Satellite mobile communication system, method and device supporting simplex data collection service

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Embodiment 1

[0027] Embodiment one: CDMA satellite mobile communication system compatible with data acquisition system

[0028] In this embodiment, a specific compatible method is described by taking the CDMA satellite mobile communication system compatible data acquisition system as an example. The CDMA system business is downwardly compatible with the data acquisition system. The data acquisition system and the CDMA system use the same frequency band, and support two working modes: independent work of data acquisition and cooperative work with the CDMA system. The data collection service and the voice data service can be different terminal devices. The data collection service needs to be supported on a terminal with GPS. GPS helps the terminal of the data collection system obtain its own position and calculate ephemeris.

[0029] The anti-jamming mechanism of the whole system is designed as follows: the terminal of the data acquisition system adopts a scrambling code that is highly corre...

Embodiment 2

[0040] Embodiment 2: On-Star Receiver Device

[0041] This embodiment specifically describes how the on-star receiver is designed and implemented. This embodiment is based on the first embodiment, and the on-star receiver of this embodiment can be used in the system and method in the first embodiment. Such as Image 6 As shown, in this embodiment, 4 beams are divided in the strip coverage access area of ​​the data acquisition system, so that the users are isolated in the airspace. The signals of the two beams are separated, so the signals of each beam can be independently processed in baseband.

[0042] In this embodiment, the receiver on the star includes a receiving antenna array, a radio frequency receiving channel, 4 data acquisition system baseband processing units and a plurality of satellite mobile communication system baseband processing units, wherein the receiving antenna array and the radio frequency receiving channel are composed of data The acquisition system is...

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Abstract

The invention provides a satellite mobile communication system, method and device supporting simplex data collection service. The satellite mobile communication system adopts a multiple-access technology. The service is backwards compatible with a data collection system. The satellite mobile communication system and the data collection system adopt the same frequency band. The data collection system supports two operation modes: data collection independent operation and cooperative operation with the satellite mobile communication system. The independent operation mode is applicable to the occasion having only uplink services. The invention also provides a corresponding method and a receiver device. According to the invention, the spectrum resource is saved, the implementation mode is flexible and simple, a constellation system is enabled to realize that the data collection service is expanded to the mobile communication service with global coverage in the same frequency band.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a satellite mobile communication system, method and device supporting simplex data collection services. Background technique [0002] At present, frequency resources suitable for low-orbit satellite mobile communication systems are very scarce, and constellation construction has the characteristics of large investment and long payback period. Therefore, the new generation of low-orbit satellite mobile communication systems adopts the method of supporting multiple services to obtain higher income. Generally speaking, the standard mobile satellite communication system can support data acquisition services downwards. However, since the mobile satellite communication system is a duplex communication system, the complexity of system design is much higher than that of simplex data acquisition-oriented systems. Communication system, so the current satellite data acquisition syste...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03H04B7/185
Inventor 蒋伯峰韩森李自闯
Owner BEIJING XINWEI TELECOM TECH
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