Grouping-based user selection method in heterogeneous network

A technology for heterogeneous networks and users, applied in the field of heterogeneous networks, it can solve the problems of insignificant effects and large errors.

Active Publication Date: 2016-12-21
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This algorithm breaks through the limitation of the number of base station antennas on the number of service users and effectively improves the system performance. However, when the distribution of u

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  • Grouping-based user selection method in heterogeneous network
  • Grouping-based user selection method in heterogeneous network
  • Grouping-based user selection method in heterogeneous network

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Embodiment Construction

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0049] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a grouping-based user selection method in a heterogeneous network. The method mainly comprises the following steps: setting multiple grouping vectors according to a micro cell in a heterogeneous network, calculating the direction deviation between the interference channel vectors of a macro base station to users in the micro cell and the grouping vectors, and grouping the users in the micro cell according to the direction deviation; selecting one benchmark user from each user group in the micro cell, and selecting candidate users other than the benchmark user from each user group according to the relationship between the interference channel vector of the macro base station to the benchmark user and the interference channel vectors of the macro base station to the other users in the user group; and selecting service users in the micro cell from the benchmark users and the other candidate users. Users optimizing the system performance can be selected to provide service under arbitrary distribution of users. Cross-layer interference to users in a heterogeneous network can be reduced, and the performance of the heterogeneous network system can be improved.

Description

technical field [0001] The invention relates to the technical field of heterogeneous networks, in particular to a group-based user selection method in heterogeneous networks. Background technique [0002] The wireless heterogeneous network deploys small base stations in areas where the coverage of macro base stations is weak or in hot spots. The small base stations include relays, picocell sites, and femtocells. By shortening the distance between the user and the base station, the user can receive high-quality signals and improve the system throughput rate, which has received extensive attention in recent years. However, the addition of small base stations to the cellular network makes the network topology very complex; due to the scarcity of spectrum resources, the heterogeneous network adopts the same frequency networking method, and the transmission power of small base stations is far from that of macro base stations. Vulnerable to severe cross-layer interference. These...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W72/08H04W84/04
CPCH04W16/18H04W84/042H04W72/542
Inventor 韩东升郝聪慧陈智雄
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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