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Double-layer resource allocation method and system for broadband phased array satellite

A broadband phased array and resource allocation technology, applied in the field of satellite communication, can solve the problems of high processing complexity and large transmission delay

Active Publication Date: 2020-08-18
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a double-layer resource allocation method and system for broadband phased array satellites, so as to alleviate the existing in the prior art if the allocation process is all carried out on the satellite, the processing complexity is too high, If the distribution process is all carried out at the ground station, the technical problem of excessive transmission delay

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  • Double-layer resource allocation method and system for broadband phased array satellite
  • Double-layer resource allocation method and system for broadband phased array satellite
  • Double-layer resource allocation method and system for broadband phased array satellite

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Embodiment 1

[0025]In the embodiment of the present invention, the phased array satellite provides services for ground users through time-division beam hopping, each beam can only serve one user per time slot, and each user can only receive one beam per time slot. The satellite phased array antenna can transmit multiple beams at the same time, and the frequency between the beams is reused. During the downlink business service process, the two beams with the same frequency should avoid overlapping due to the coverage area of ​​the main lobe, so as to avoid co-frequency interference. The embodiment of the present invention provides a two-layer resource allocation method, which decouples beam allocation and time slot allocation, wherein the beam allocation is performed in the ground operation and control center of the broadband phased array satellite, and is allocated immediately when the user accesses the satellite network; The time slot allocation is carried out on the broadband phased array...

Embodiment 2

[0049] figure 2 It is another double-layer resource allocation method for broadband phased array satellites provided according to an embodiment of the present invention, and the method is applied to broadband phased array satellites. Such as figure 2 As shown, the method specifically includes the following steps:

[0050] Step S202, acquiring beam allocation information and data information to be transmitted of the target user; the target user is a time slot user to be allocated, and the beam allocation information includes beam information allocated to the target user by the ground operation and control center of the broadband phased array satellite.

[0051] Optionally, the data information to be sent includes: a plurality of data packets to be sent, a priority level of each data packet to be sent, and a data packet length of each data packet to be sent.

[0052] Step S204, allocate a transmission time slot for the target user based on the beam allocation information and...

Embodiment 3

[0072] image 3 It is a schematic diagram of a double-layer resource allocation system for a broadband phased array satellite provided according to an embodiment of the present invention, and is applied to a broadband phased array satellite communication system. Among them, the broadband phased array satellite communication system includes: broadband phased array satellite and ground operation and control center.

[0073] Such as image 3 As shown, the two-layer resource allocation system provided by the embodiment of the present invention includes: an information collection module 10 , an adaptive modulation and coding module 20 , a user beam allocation module 30 and a time slot scheduling module 40 . Among them, the information collection module 10, the adaptive modulation and coding module 20 and the user beam allocation module 30 are set in the ground operation and control center, and the time slot scheduling module 40 is set in the broadband phased array satellite.

[0...

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Abstract

The invention provides a double-layer resource allocation method and system for a broadband phased array satellite. The method is are applied to a ground operation and control center of the broadbandphased array satellite and comprise the following steps: acquiring user information of a target user and an allocated beam user; based on the user channel quality and the user subscription information, determining an information rate at which a plurality of beams of the broadband phased array satellite transmit data packets to each allocated beam user; determining a target beam for transmitting adata packet to the target user based on the user information and the information rate; and sending the beam allocation information containing the target beam to the broadband phased array satellite, so that the broadband phased array satellite allocates a transmission time slot to the target user based on the beam allocation information. According to the invention, the technical problems in the prior art that the processing complexity is too high if the distribution process is carried out in satellites, and the transmission delay is too long if the distribution process is carried out in a ground station are solved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a double-layer resource allocation method and system for broadband phased array satellites. Background technique [0002] As an important part of the next-generation mobile communication network, broadband satellite has attracted extensive attention because it can provide global seamless network coverage at a relatively low cost. With its flexible beam, phased array antenna is more and more widely used in the construction of satellite network. Compared with traditional fixed multi-beam satellites, the beam pointing of phased array satellites can be adjusted arbitrarily, and the frequency reuse is more flexible. However, the resource dimensions that can be allocated by phased array beams are wider, and the allocation complexity is higher. [0003] Most of the traditional satellites are transparent forwarding, only used as a channel for information forwarding. Wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/18513H04B7/18578
Inventor 姜春晓刘秉坤匡麟玲
Owner TSINGHUA UNIV
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