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A d2d communication interference coordination method based on user location information

A technology of communication interference and coordination methods, which is applied in the directions of machine-to-machine/machine-type communication services, wireless communication, electrical components, etc., which can solve the problems of difficult access to base stations, increase the signaling burden of base stations, and reduce signaling burden. , good practical effect

Active Publication Date: 2019-12-31
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] However, in the existing research, the base station needs to know the channel state information of all communication links, and the channel state information between the cellular user and the D2D receiver and between the D2D communication links is difficult for the base station to obtain
At the same time, when there are multiple pairs of D2D users and cellular users in a cell, obtaining channel state information between communication links will undoubtedly increase the signaling burden of the base station

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  • A d2d communication interference coordination method based on user location information
  • A d2d communication interference coordination method based on user location information
  • A d2d communication interference coordination method based on user location information

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[0029] Below in conjunction with accompanying drawing, the present invention will be further described:

[0030] Such as figure 1 1. System model shown in

[0031] In this paper, we consider interference analysis in a single-cell scenario, such as figure 1 shown. The base station BS is located in the central area of ​​the cell, and the cellular users and D2D users are randomly distributed in the cell. In this paper, we assume that there are a pair of D2D users and N cellular users in the cell. And it is stipulated that a D2D user can only reuse resources of one cellular user at most. exist figure 1 Medium, D2D-T X Indicates the D2D transmitter, D2D-R X Indicates the D2D receiving end, and the nth cellular user is denoted as CUE n , Expressed as the distance from the nth cellular user to the base station, r D Expressed as the distance from the D2D transmitter to the base station, Denoted as cellular user CUE 1 The distance to the D2D receiving end, ρ is expressed ...

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Abstract

The present invention requests protection of a D2D communication interference coordination method based on user location information, which relates to the interference coordination technology in the cellular and D2D hybrid communication network. The introduction of D2D communication in the LTE-A system will cause mutual interaction between cellular users and D2D users. interference. In this paper, a distance-based interference coordination method is proposed to limit the interference between the two. It is mainly divided into two stages. In the first stage, a circle centered on the base station is obtained by analyzing the outage probability of the cellular users. In the second stage, through the analysis of the D2D user interruption probability, a D2D receiver-centered The circular area is called a non-resource area, that is, D2D users cannot reuse the resources of cellular users within this range. This method can significantly reduce the outage probability of cellular users and D2D users, and at the same time reduce the signaling burden on the base station side, and has good implementability.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to an interference coordination technology in a cellular and D2D hybrid communication system. Background technique [0002] With the large-scale commercial use of 3G and 4G cellular networks and the popularization of various portable terminals such as smartphones and tablet computers, people's demand for large broadband data communications has grown explosively. Although the bandwidth of the above network continues to increase, it is still difficult to meet the needs of users for large-bandwidth services such as online high-definition video, online real-time games, and real-time data sharing. How to use limited wireless resources to meet users' needs for efficient and reliable mobile broadband data services has become a hot spot of common concern in both academic and industrial circles. [0003] Due to the limited bandwidth of the licensed cellular spectrum, while the us...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W72/04H04W72/08
CPCH04W4/70H04W72/51H04W72/541
Inventor 韦世红黄祥刘远航叶宗刚赵迎芝
Owner CHONGQING UNIV OF POSTS & TELECOMM
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