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Intelligent spectrum sharing method for 5G communication system

A technology of spectrum sharing and communication system, applied in the field of intelligent spectrum sharing and intelligent spectrum sharing in 5G communication system, which can solve the problems of fixed sharing competition period and lack of flexibility.

Pending Publication Date: 2021-02-23
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the sharing competition period is fixed and lacks flexibility when spectrum resources are shared in the prior art, and proposes a method for intelligent spectrum sharing in a 5G communication system. The specific steps of the method are as follows:

Method used

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  • Intelligent spectrum sharing method for 5G communication system
  • Intelligent spectrum sharing method for 5G communication system
  • Intelligent spectrum sharing method for 5G communication system

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Experimental program
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specific Embodiment approach 1

[0056] Specific implementation mode one: if X n Represents the state at time n, the random variable X i The set of constitutes the state space, then X n+1 The conditional probability distribution over past states is simply X n the expression of

[0057] P(X n+1 =m|X 0 ,X 1 ,...,X n )=P(X n+1 =m|X n ) (1)

[0058] This theory is an important model, when the random process at t 0 When the state at time is determined, at t(t 0 0 The state before the moment is irrelevant.

[0059] Assume that the state space S={1,2,…,N} of the homogeneous Markov process {X′(t),t≥0} with continuous state discrete parameters, its transition probability matrix is ​​P(t), and the density matrix is Q, the initial distribution is P={p 1 ,p 2 ,...,p N}. Assume that when the system is in state 1, 2,..., K, the system can work normally; and when it is in state K+1,..., N, the system fails to operate normally and needs to be repaired.

[0060] Expected occupancy time requirement t of CUn n...

specific Embodiment approach 2

[0100] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that α in step 1 is specifically:

[0101] Indicates the total amount of spectrum that can be shared in the current system, Indicates the total amount of spectrum owned by the AU.

[0102] In common spectrum sharing, although the sharing interval period can be long or short, it is still a fixed value. This way will limit the flexibility of spectrum sharing and does not conform to the idea of ​​this embodiment. Therefore, considering the time interval of spectrum sharing, an intelligent spectrum sharing method is proposed, and its specific definition is as follows:

[0103] Definition: intelligent spectrum sharing, no fixed period is set between two adjacent spectrum sharing actions, and the system determines whether to start a new spectrum sharing.

[0104] The conditions for intelligently starting a new spectrum sharing are: if Then start a new competition. in, Indica...

specific Embodiment approach 3

[0107] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the data traffic D in the step 4 n Specifically:

[0108] If the three dimensions of space, time and frequency are studied together, it can be found that the space domain (CU number), frequency (bandwidth) and time (transmission duration) are related to each other. When the amount of data required by the CU is known, the data transmission can be obtained. The demand is:

[0109]

[0110] where p' n,m Indicates the transmission power of CU n on channel m, |H n,m | 2 In order to represent the power gain of CU n on channel m, if the gain of each CU in each channel is the same, that is: |H n,m | 2 =|H m | 2 , for m n The bandwidth of an idle channel; the unit channel bandwidth is denoted as Δf; t n Indicates the transmission time; f s is the sampling point frequency, σ 2 is the noise power

[0111] K is the signal-to-noise ratio relationship between th...

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Abstract

The invention relates to an intelligent spectrum sharing method for a 5G communication system, and belongs to the field of intelligent spectrum sharing. The invention aims to solve the problem of lackof flexibility of spectrum sharing in the prior art. According to the method provided by the invention, the interference of the CU received by the AU is reduced, and the mutual conflict of the CU isreduced, thereby ensuring the normal communication of the 5G communication system. Frequency spectrum sharing can be researched in a frequency domain angle, a time angle and a space angle domain, an intelligent frequency spectrum sharing method oriented to a 5G communication system is realized, the CU competition condition in the frequency domain aspect is analyzed, the number of CUs in the spaceaspect and the number of available channels are determined, the conflict between the CUs and the AU is judged in the time domain aspect, the total utility of the system is statistically analyzed, andthe performance of a utility target of the simulation analysis system is improved, so that the total data exchange capacity is improved and the data transmission requirement is met.

Description

technical field [0001] The invention relates to a method for intelligent spectrum sharing in a 5G communication system, in particular to a method for intelligent spectrum sharing in a 5G communication system, and belongs to the field of communication technology. Background technique [0002] The 5G era is coming fast, and spectrum sharing is the general trend. The existing 5G communication system has a shortage of spectrum resources, and there is an urgent need to establish a good wireless communication system. Through refined spectrum management, spectrum sharing can be realized in multiple dimensions of frequency domain, time domain, and air domain. The contradiction in using the spectrum hole is the conflict between the authorized user (AU) and the cognitive user (CU). In order to ensure the normal communication of the AU on its frequency band, when the AU returns, the CU needs to release its The occupied channel is "returned" to the AU. However, in view of the fact tha...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W74/08
CPCH04W16/14H04W74/0808
Inventor 谢玉鹏孙国玺郭继坤崔得龙陈安志
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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