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Virtual mapping method based on simulated annealing algorithm under super-intensive environment

A simulated annealing algorithm and virtual mapping technology, applied in electrical components, wireless communication and other directions, can solve the problems of the same-frequency cells becoming closer, the interference between cells is serious, and the network throughput is affected, so as to reduce the interference between cells and improve the The effect of throughput

Active Publication Date: 2018-08-03
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, at the same time, due to the closer distance between a large number of co-frequency cells, inter-cell interference is more serious than traditional cellular networks, which seriously affects the throughput of the network

Method used

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  • Virtual mapping method based on simulated annealing algorithm under super-intensive environment
  • Virtual mapping method based on simulated annealing algorithm under super-intensive environment
  • Virtual mapping method based on simulated annealing algorithm under super-intensive environment

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Embodiment 1

[0048] This embodiment provides a virtual mapping method based on a simulated annealing algorithm in an ultra-dense environment, which includes the following steps: establishing a service arrival model through the service arrival process and service duration distribution, and then determining the channel allocation matrix, and establishing an interference model ;Virtualize the wireless frequency resources, and then allocate the spectrum resources through the wireless network mapping method; so that the user's receiving signal-to-interference ratio is guaranteed, and the interference is reduced, so that the throughput of the entire system is improved.

[0049] It can be seen that this embodiment mainly includes three contents: one is the construction of ultra-dense network model and service arrival model; the other is the modeling of interference model, and the expression of signal-to-interference ratio is given; method, according to the optimization method, the spectrum resourc...

Embodiment 2

[0102] This embodiment provides a wireless virtual mapping method considering inter-cell interference in an ultra-dense environment, such as figure 2 and image 3 As shown, the method includes the following steps:

[0103] Step 1. Solution space and initial solution of the problem

[0104] The solution space S of the problem in this embodiment refers to the channel allocation matrix D that each micro base station satisfies the constraints n , through the channel allocation matrix of each micro base station, the interference and throughput of the entire network can be obtained. The solution space S can be expressed as:

[0105]

[0106] That is, the sum of each row element of each matrix is ​​1, and the sum of each column element is less than or equal to 1. Since the optimal solution of the simulated annealing algorithm has no strong dependence on the initial state, the initial solution is a random matrix generated by a random function.

[0107] Step 2. Objective funct...

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Abstract

The invention relates to a virtual mapping method based on a simulated annealing algorithm under a super-intensive environment. The method comprises the following steps: firstly, initializing a super-intensive network system, and establishing a micro-base station set B and a location set Ab; secondly, establishing a service arrival model through service arrival process and service duration, constructing a channel distribution matrix according to the service arrival model, and computing a signal-to-interference ratio of each user through the channel distribution matrix and an interference model, and then acquiring the network throughput capacity of each user; and virtualizing wireless resources of a macro base station and micro base stations to form a wireless spectrum pool; and finally, distributing spectrum slices to various micro base stations according to a user request, thereby serving for the user. The virtual mapping method disclosed by the invention has the advantage that the spectrum resource is virtualized, the maximum network throughput capacity is satisfied through the optimization algorithm, and the dynamic optimal wireless frequency resource configuration is realized.

Description

technical field [0001] The present invention relates to a method of network modeling, service arrival modeling, channel modeling and virtual network resource mapping method in ultra-dense networking, especially a virtual mapping method based on simulated annealing algorithm in an ultra-dense environment, which belongs to wireless communication technology field. Background technique [0002] With the rapid popularization of smart terminals and the explosive growth of network communication capacity, the evolution requirements for 5G-oriented wireless communication technologies are becoming clearer and more urgent. At present, the formulation of a globally unified 5G standard has become the common voice of the mobile communication industry. ITU has started the research work on 5G standards and clarified the IMT-2020 (5G) work plan: the preliminary research on IMT-2020 international standards will be completed in 2015 ; In 2016, research on 5G technical performance requirements...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/08
CPCH04W72/0453H04W72/51H04W72/541H04W72/542
Inventor 张晖刘旸波
Owner NANJING UNIV OF POSTS & TELECOMM
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