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Data broadcasting method and device

A technology of broadcasting data and data, applied in the field of satellite communication, can solve the problems of high bit overhead and occupying large physical resources

Active Publication Date: 2020-07-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in existing solutions, satellite base stations usually broadcast these data directly, and the bit overhead is very large, and these bit overhead will occupy a large amount of physical resources

Method used

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Embodiment Construction

[0034] The technical solution in this application will be described below with reference to the accompanying drawings.

[0035] The technical solution of the application can be applied to a satellite communication system. seefigure 1 , figure 1 It is a schematic diagram of the architecture of the satellite communication system. The satellite communication system 100 generally consists of three parts: space segment, ground segment and user segment. The space segment may be composed of geostationary earth orbit (geostationary earth orbit, GEO) satellites, non-geostationary earth orbit (none-geostationary earth orbit, NGEO) satellites, or a multi-satellite network 101 composed of both. The ground segment generally includes a satellite measurement and control center 102, a network control center (NCC) 103, and various gateway stations (gateway) 104, etc., which are also called gateway stations. Wherein, the network control center is also called a system control center (system c...

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Abstract

The invention provides a data broadcasting method which is applied to a satellite communication system and can reduce the expenditure of physical resources when a satellite base station broadcasts data. The method comprises that: a satellite base station acquires a plurality of data needing to be broadcasted, wherein the multiple pieces of data are the same data in Doppler frequency offset compensation values, Doppler frequency offset change rates, transmission time delays, transmission time delay change rates, time advances TA, TA change rates and angles of the multiple beams respectively corresponding to the multiple beams generated by the satellite base station; the satellite base station determines reference data and offset of each datum in the plurality of data relative to the reference data according to the plurality of data; and the satellite base station sends first indication information and a plurality of pieces of second indication information to the terminal equipment, thefirst indication information is used for indicating the reference data, and each piece of second indication information is used for indicating offset of one piece of data in the plurality of pieces ofdata relative to the reference data.

Description

technical field [0001] The present application relates to the field of satellite communication, and more particularly, to a method and device for broadcasting data. Background technique [0002] In the satellite communication system, the satellite base station needs to broadcast a large amount of data to the terminal equipment. For example, the satellite base station broadcasts a timing advance (timing advance, TA), a compensation value of Doppler frequency offset, etc. to the terminal equipment. For a satellite, it usually generates more than one beam, and the compensation values ​​of TA and Doppler frequency offset of different beams are different. However, in the existing solution, the satellite base station usually directly broadcasts the data, and the bit overhead is very large, and the bit overhead will occupy a large amount of physical resources. Contents of the invention [0003] The present application provides a method for broadcasting data, which can reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18523H04B7/18513H04B7/2041H04W56/0045H04B7/1851
Inventor 罗禾佳陈莹盛杰李榕
Owner HUAWEI TECH CO LTD
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