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Multi-dimensional resource joint allocation method for multi-beam satellite same-frequency networking system

A technology of co-frequency networking and joint allocation, applied in the field of satellite communications, can solve the problem of not being able to make full use of the total frequency resources of the system, and achieve the effects of improving overall delay performance, minimizing system delay, and reducing co-frequency interference.

Active Publication Date: 2021-11-12
BEIJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

[0003] At present, many studies on resource allocation of multi-beam satellites are allocating resources in the beam domain. Each beam uses part of the frequency, which cannot make full use of the total frequency resources of the system.

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  • Multi-dimensional resource joint allocation method for multi-beam satellite same-frequency networking system
  • Multi-dimensional resource joint allocation method for multi-beam satellite same-frequency networking system
  • Multi-dimensional resource joint allocation method for multi-beam satellite same-frequency networking system

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Embodiment Construction

[0020] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0021] The present invention considers the scenario of downlink data transmission in a multi-beam GEO satellite co-frequency networking system. In the multi-beam coverage area, the user requests data download from the satellite, and the requested data comes from the ground gateway station, but since the feeder link from the gateway station to the satellite generally has a high capacity, it can be assumed to be an ideal link, so in This only considers the downlink resource allocation from the satellite to the user link. Such as figure 1 As shown, within the satellite multi-beam coverage, users are distributed in different beams and transmit data with satellites. Different users request different amounts of data from satellites. By combining user location, data size and some other Conditions to flexibly allocate time slots, bandwidth, and power resour...

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Abstract

The invention relates to a multi-dimensional resource joint allocation method for a multi-beam satellite co-frequency networking system, and belongs to the technical field of satellite communication. The method comprises the following steps: modeling a downlink data transmission scene in a multi-beam satellite same-frequency networking system, performing full-frequency multiplexing on frequency resources of satellites in the scene, performing joint allocation of time slots, bandwidths and power resources of users according to user-level resource allocation, modeling an allocation process as a Markov process, using a multi-beam satellite communication system as an environment state, inputting a near-end strategy optimization PPO network for interaction, selecting a user to be served in a current time slot by using the PPO network, and allocating bandwidth and power resources to the user. According to the method disclosed by the invention, the coordinated scheduling user is selected in each time slot and the frequency and power resources are reasonably allocated for the user, so that relatively small co-frequency interference between the users is kept in a full-frequency multiplexing scene, the data transmission rate in the co-frequency multiplexing scene is improved, and the purpose of minimizing the system time delay is achieved.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a joint allocation method of multi-beam satellite time slots, bandwidth and power resources based on near-end strategy optimization in a multi-beam satellite co-frequency networking system. Background technique [0002] Due to its seamless coverage and strong invulnerability, satellite communication plays an important role in the fields of maritime and aviation communications. It can also effectively solve the problem of connecting users in remote areas that cannot be covered by ground networks. With the rapid development of terrestrial Internet applications, satellite communications need to be transformed from traditional simple TV broadcasting services to high-speed broadband data services to provide large-scale user connections. At present, most satellite communication systems use multi-beam antenna technology to cover the service area. High-through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519
Inventor 崔高峰王亚楠胡东伟王力男徐媛媛段鹏飞王卫东
Owner BEIJING UNIV OF POSTS & TELECOMM
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