D2D communication interference coordination method based on user position information

A technology of communication interference and coordination method, which is applied in the field of mobile communication, and can solve problems such as the difficulty of obtaining base stations and increasing the signaling burden of base stations

Active Publication Date: 2016-10-26
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 ...

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  • D2D communication interference coordination method based on user position information
  • D2D communication interference coordination method based on user position information
  • D2D communication interference coordination method based on user position 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 invention requests to protect a D2D communication interference coordination method based on user position information, and relates to the fact that mutual interferences are generated between cellular users and D2D users because an interference coordinate technology in a cellular and D2D hybrid communication network introduces D2D communication into an LTE-A system. The interference coordination method based on distances is brought forward to limit the interferences between the cellular users and the D2D users. The method is mainly divided into two stages: in the first stage, through analyses on outage probabilities of the cellular users, a circular region taking a base station as a center is obtained and is named as a non-multiplexed region, that is to say, the D2D users in the scope cannot reuse resources of the cellular users; and, in the second stage, through analyses on outage probabilities of the D2D users, a circular region taking a D2D receiving end as a center is obtained and is named as a non-resource region, that is to say, the D2D users cannot reuse resources of the cellular users in the scope. The method can substantially reduce the outage probabilities of the cellular users and the D2D users, and reduce a signaling burden on a base station side; and the method has good realizability.

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...

Claims

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Application Information

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IPC IPC(8): H04W4/00H04W72/04H04W72/08
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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