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Joint distribution method for uplink power and time slots of multi-beam MF-TDMA cognitive satellite network

A MF-TDMA, satellite network technology, applied in the joint allocation of uplink power and time slots of multi-beam MF-TDMA cognitive satellite network, power control technology and bandwidth allocation, can solve the problem of reducing resource allocation efficiency and increasing network management center. Computational overhead and other issues, to achieve the effect of protecting communication quality, realizing efficient resource sharing, and reducing computing overhead

Active Publication Date: 2020-01-03
军事科学院系统工程研究院网络信息研究所
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Problems solved by technology

Only some studies have focused on the joint optimization of uplink transmission power and bandwidth resources, and all of them adopt a centralized resource allocation method, which greatly increases the computing overhead of the network management center and reduces the efficiency of resource allocation.

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  • Joint distribution method for uplink power and time slots of multi-beam MF-TDMA cognitive satellite network
  • Joint distribution method for uplink power and time slots of multi-beam MF-TDMA cognitive satellite network
  • Joint distribution method for uplink power and time slots of multi-beam MF-TDMA cognitive satellite network

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Embodiment Construction

[0040] A method for jointly allocating uplink power and time slots of a multi-beam MF-TDMA cognitive satellite network, comprising the following steps:

[0041]Step 1. The on-board central computing unit sends the resource allocation parameters corresponding to each beam to each beam resource computing unit, and broadcasts the resource allocation parameters to cognitive satellite users through a dedicated signaling channel; the on-board central computing unit initializes resources Assign parameters as matrix λ=[λ l,f ] L×F , α=[α l,m,f,t ] L×M×F×T , β=[β l,m,f,t ] L×M×F×T , resource allocation parameters satisfy λ l,f >0, alpha l,m,f,t >0, beta l,m,f,t >0, The flow chart of the joint allocation method of uplink power and time slot is as follows: figure 1 shown.

[0042] Step 2, each beam resource calculation unit calculates the initial power allocation value of the cognitive satellite users under the beam coverage area on each MF-TDMA time slot according to the ...

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Abstract

The invention discloses a joint distribution method for uplink power and time slots of a multi-beam MF-TDMA cognitive satellite network. The joint distribution method adopts an on-board resource management architecture and an iterative resource calculation method based on distributed calculation and resource allocation parameter assistance, can effectively reduce the calculation overhead of a network management center, can increase the resource calculation convergence speed, under the condition that the cognitive satellite user accesses the ground microwave base station to serve as the main user at the same frequency band, can guarantee that interference borne by the microwave base station is below the maximum interference threshold while guaranteeing the communication quality requirementof the cognitive satellite user, and can improve the overall capacity of the network. The joint distribution method has the advantages that the convergence speed is higher than that of a traditional central resource allocation method, the resource allocation efficiency and flexibility are improved through multi-user and multi-beam computing units, and the network capacity is improved by combiningtwo-dimensional resource optimization. The joint distribution method is particularly suitable for optimizing the uplink of the multi-beam MF-TDMA cognitive satellite network with limited resources anda flexible networking mode.

Description

technical field [0001] The invention belongs to the power control technology and bandwidth allocation technology in the field of cognitive radio, and in particular relates to a joint allocation method of uplink power and time slots of a multi-beam MF-TDMA cognitive satellite network. Background technique [0002] Due to its high data transmission rate and wide-area coverage capabilities, satellite communication networks can play an increasingly important role as a supplement to ground communication networks in scenarios such as emergency communications, maritime communications, and coverage in remote areas. However, with the increasing demand for multimedia services and Internet services, the performance improvement of satellite networks and terrestrial networks is increasingly constrained by the limited spectrum resources. Although technologies such as multi-beam diversity and multi-frequency time-division multiple access can improve resource sharing capabilities, they can ...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W52/14H04W52/38H04W72/04H04W84/06H04B17/382
CPCH04W16/14H04W52/146H04W52/38H04W72/0446H04W72/0473H04W84/06H04B17/382H04W72/53Y02D30/70
Inventor 钟旭东尹浩何元智董飞鸿
Owner 军事科学院系统工程研究院网络信息研究所
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