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A wireless resource multiplexing method for two-layer heterogeneous network

A wireless resource and heterogeneous network technology, applied in wireless communication, network planning, electrical components, etc., can solve problems that restrict system transmission performance, achieve the goal of suppressing interference, improving utilization efficiency and data rate, and reducing same-layer interference Effect

Active Publication Date: 2022-04-19
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0003] In fact, due to the same-frequency networking of the heterogeneous cellular network, a large number of micro base station users and macro base station users share spectrum resources, and the micro base station will inevitably interfere with the macro base station. At the same time, between micro base stations and macro base station users There will also be mutual interference between them, which restricts the transmission performance of the system

Method used

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  • A wireless resource multiplexing method for two-layer heterogeneous network

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Embodiment Construction

[0031] According to the basic idea of ​​the present invention, when designing and realizing the wireless resource reuse scheme of the entire network, three adjacent cells in the network are regarded as a group, and any of them can be designed according to the method proposed by the present invention. and then apply the same design to other clusters in the network.

[0032] Such as figure 1 As shown, a wireless resource multiplexing method for a two-layer heterogeneous network, the specific steps are as follows:

[0033] (1) According to the distance threshold between the user and the cell center, the users in the cell are divided into two groups, the users whose distance from the cell center is smaller than the threshold value are the cell center users, and the users whose distance from the cell center is greater than or equal to the threshold value are the cell marginal users.

[0034] (2) Divide the entire set of available wireless resources Ω into 7 subsets: f 0 , f 1 ,...

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Abstract

The invention discloses a wireless resource multiplexing method for a two-layer heterogeneous network. In the present invention, three adjacent cells in pairs in the system are regarded as a group. The present invention divides the users of each cell into cell center users and cell edge users, wherein the macro users in the cell center share the same wireless resource set, and the micro users in the cell center determine the available wireless resource set according to the interference intensity they receive , if the interference is low, share the radio resource set with the macro user in the cell center, otherwise use the orthogonal radio resource set. For cell-edge users, macro-users at the cell-edge use three orthogonal wireless resource sets, and micro-users at the cell-edge use another three partially orthogonal wireless resources. The present invention can effectively improve system wireless resource utilization efficiency and data rate on the premise of satisfying a certain QoS for users.

Description

technical field [0001] The invention relates to the field of resource allocation of heterogeneous networks, in particular to a wireless resource multiplexing method for two-layer heterogeneous networks. Background technique [0002] With the increasing demand of users for communication services and the continuous development of intelligent terminals and multimedia services, the number of macro-cellular network nodes continues to increase. Although the macro base station has a large coverage area, it cannot guarantee that all users of the macro base station can enjoy good communication services. Moreover, a larger coverage area easily leads to high energy system consumption. Therefore, micro base stations emerge as the times require, and the embedding of micro base stations greatly improves the coverage probability and system capacity of macro base stations. The heterogeneous network was thus born. [0003] In fact, due to the same-frequency networking of the heterogeneous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W72/04
CPCH04W16/10H04W72/044H04W72/53
Inventor 许方敏钱慧曹海燕
Owner HANGZHOU DIANZI UNIV
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