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Satellite-ground interference coordination method, device and equipment based on radio map information

A radio map and interference coordination technology, applied in the field of communication, can solve the problems of difficult engineering implementation of opportunistic resource allocation technology, difficulty in obtaining complete channel state information, etc., and achieve the effect of expanding the range of shared frequency bands, increasing the average sum rate, and reducing interference

Active Publication Date: 2022-06-28
CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical engineering applications, it is difficult to obtain complete channel state information due to overhead, delay, etc., and the opportunistic resource allocation technology based on complete channel state information is difficult to implement in engineering

Method used

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  • Satellite-ground interference coordination method, device and equipment based on radio map information
  • Satellite-ground interference coordination method, device and equipment based on radio map information
  • Satellite-ground interference coordination method, device and equipment based on radio map information

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0086] 1) Set N DAEs in the DAS system to send signals to K TUs in an equal power mode, that is, the transmission powers to K TUs are

[0087] 2) The GSAT system randomly selects L from the Q STs for service;

[0088] 3) The DAS system optimizes and adjusts the power sent by N DAEs to K TUs

[0089] a) set ι = 0; Threshold value ε=1×10 -3 ;

[0090] b) order Bring into formula (10), calculate the updated W k ,k=1,...,K, and let ι=ι+1 in the computer execution program;

[0091] c) Based on formula (9), construct the following optimization problem:

[0092]

[0093]

[0094] p kn ≥0,k=1,...,K,n=1,...,N. (11)

[0095] s.t. is the abbreviation of subject to, and s.t. means that the conditions are met.

[0096] Solve Equation (11), and denote the obtained optimal solution as

[0097] Formula (11) can be solved by means of standard geometric programming and other methods, and the specific steps to solve formula (11) by using standard geometric programming are as ...

example 2

[0123] 1) Set N DAEs in the DAS system to send signals to K TUs in an equal power mode, that is, the transmission powers to K TUs are

[0124] 2) According to the interference to the downlink of the DAS system, on the premise that the uplink performance of the system is not affected, select L from the Q STs for service according to the following steps, and calculate the effect of the Q STs on the K in the DAS system. TU interference and power Will Sort from small to large, and mark the ST corresponding to the first L minimum values ​​as ST1,...,L respectively;

[0125] choose according to The ST1,...,L obtained by sorting are used as the uplink service users of the GSAT system;

[0126] 3) The DAS system optimizes and adjusts the power sent by N DAEs to K TUs

[0127] a) set ι = 0; Threshold value ε=1×10 -3 ;

[0128] b) order Bring into formula (10), calculate the updated W k ,k=1,...,K, and let ι=ι+1 in the computer execution program;

[0129] c) Based on fo...

example 3

[0151] 1) Set N DAEs in the DAS system to send signals to K TUs in an equal power mode, that is, the transmission powers to K TUs are

[0152] 2) According to the interference to the downlink of the DAS system, without affecting the uplink performance of the system, select L from the Q STs for service according to the following steps, and calculate the Q STs to the K in the DAS system. The strongest interference power of the TU Will Sort from small to large, and mark the ST corresponding to the first L minimum values ​​as ST1,...,L respectively;

[0153] choose according to The ST1,...,L obtained by sorting are used as the uplink service users of the GSAT system;

[0154] 3) The DAS system optimizes and adjusts the power sent by N DAEs to K TUs

[0155] a) set ι = 0; Threshold value ε=1×10 -3 ;

[0156] b) order Bring into formula (10), calculate the updated W k ,k=1,...,K, and let ι=ι+1 in the computer execution program;

[0157] c) Based on formula (9), cons...

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Abstract

The invention discloses a satellite-ground interference coordination method, device and equipment based on radio map information. The method is suitable for spectrum sharing scenarios of satellite communication systems and distributed antenna communication systems, and includes: acquiring the spectrum sharing scenarios radio map information; according to the wireless channel model, use the radio map information to solve the maximum average sum rate of the distributed antenna communication system; obtain the distributed antenna communication system according to the maximum average sum rate of the distributed antenna communication system The transmit power that each base station antenna unit sends to each wireless user terminal; adjust the power that each base station antenna unit in the distributed antenna communication system transmits to the wireless user terminal according to the obtained transmit power. The invention can realize efficient frequency spectrum sharing between the satellite communication system and the distributed antenna communication system, thereby expanding the range of shared frequency bands between the satellite communication system and the distributed antenna communication system.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a satellite-ground interference coordination method, device and device based on radio map information. Background technique [0002] In order to solve the shortage of wireless spectrum resources and realize the orderly sharing of wireless spectrum resources between the satellite communication system and the distributed antenna communication system, the following two interference coordination methods are mainly used to reduce the mutual interference between the two systems: [0003] 1) Antenna array beamforming based on space division [0004] Using the difference in geographic space between the transceiver equipment (communication satellites, ground stations, and ground terminals) of the satellite communication system and the transceiver equipment (base stations and user terminals) of the distributed antenna communication system, the antenna pattern is adjusted b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/382H04B17/391H04W52/24H04W52/28
CPCH04B17/382H04B17/3911H04W52/243H04W52/282
Inventor 王燕敏陆洲冯旭柳罡周彬
Owner CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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