D2D communication interference coordination method based on user position information

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...

AI Technical Summary

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

Images