A large-scale access method based on inter-satellite cooperation
An access method and large-scale technology, applied in baseband systems, network planning, baseband system components, etc., can solve problems such as limited coverage of terrestrial communication networks, and achieve the effect of practical reliability, high spectral efficiency, and interference suppression.
Active Publication Date: 2022-05-20
ZHEJIANG UNIV
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[0006] The purpose of the present invention is to solve the problem of limited coverage of the existing ground communication network, design a multi-satellite communication network to provide an efficient access method for future wireless communication, and then propose a large-scale access method based on inter-satellite cooperation entry method
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[0033] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.
[0034] The system block diagram of a large-scale access method based on inter-satellite cooperation proposed by the present invention is as follows figure 1 As shown, multiple low-orbit satellites use multi-beam technology at the same time to increase the overall system capacity. Each satellite covers multiple areas, and satellite users in each area share the same beam. There may be overlapping coverage areas between adjacent satellites, which will cause inter-satellite interference. Each satellite uses channel estimation to obtain the channel state information of its respective users, and adjacent satellites share the channel state information of users in the over...
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The invention discloses a large-scale access method based on inter-satellite cooperation. Multiple low-orbit satellites use multi-beam technology at the same time to increase the overall system capacity. Each satellite covers multiple areas, and satellite users in each area share the same beam. There may be overlapping coverage areas between adjacent satellites, which will cause inter-satellite interference. Each satellite uses channel estimation to obtain the channel state information of its respective users, and adjacent satellites share the channel state information of users in the overlapping area through the inter-satellite link, and then according to the channel information, the transmitted signals of each beam are superimposed and coded, and finally The superimposed encoded signal is transmitted through the antenna. After receiving the signal, the user first decodes the user signals with weaker channel gain in the beam area, removes the signals of these users, and finally decodes its own signal. The invention provides an effective wireless access method for realizing space-based large-scale information network.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a large-scale access method based on inter-satellite cooperation. Background technique [0002] In recent years, the fifth-generation (5G) mobile communication network has gradually become popular, 5G applications and technological innovations continue to emerge, and the business capabilities of the ground communication network have reached an unprecedented peak. However, there is still a long way to go before realizing the vision of "communication network access anytime and anywhere". For example, in many remote areas, such as deserts, mountains, and oceans, communication networks are still not available. Complete coverage, which makes many communication people shift their attention from ground-based communication networks to space-based communication networks. [0003] Due to factors such as geographical location and economic cost, the service area of the terrestrial ne...
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IPC IPC(8): H04W16/18H04W16/28H04W84/06H04B7/185H04L25/03
CPCH04W16/18H04W16/28H04W84/06H04B7/18521H04L25/03006Y02D30/70
Inventor 褚建杭陈晓明
Owner ZHEJIANG UNIV