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Interference suppression method for underlay inter-device communication cellular network

An interference suppression and cellular network technology, applied in wireless communication, network planning, machine-to-machine/machine-type communication services, etc., can solve problems such as performance degradation, poor performance, interference, etc., to reduce signaling overhead and system Complexity, the effect of reducing user burden

Active Publication Date: 2020-01-10
DALIAN UNIV OF TECH
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Problems solved by technology

Furthermore, although the setting of the exclusion area can effectively protect the cellular users in the area from the interference caused by D2D communication, the cellular users outside the exclusion area will still be interfered by the D2D communication.
As these users are far away from the serving base station, their performance is poor, coupled with the interference caused by D2D communication, the performance will further deteriorate

Method used

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  • Interference suppression method for underlay inter-device communication cellular network
  • Interference suppression method for underlay inter-device communication cellular network
  • Interference suppression method for underlay inter-device communication cellular network

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Schematic such as figure 1 shown. The circular repelling area is taken as an example for analysis, but the present invention is not limited to a circle, and may be a square, sector, triangle or other irregular shapes.

[0032] The specific implementation of the base station includes the following steps:

[0033] Step 1: Information collection and model building

[0034] Step 1.1: Information Gathering

[0035] The base station obtains user-related information through user reports, including user transmit power, user location information, and whether the user has an initial paired user, and estimates the initial paired user (potential D2D user) density Λ D and initial cellular user density (i.e. unpaired user) density Λ c . User’s transmit power configuration, with μ D express. The base station obtains other information through t...

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Abstract

The invention discloses an interference suppression method for an underlay inter-device communication cellular network, and belongs to the technical field of wireless communication. The method comprises the following steps: collecting information and establishing a model; and secondly, setting a rejection area, and adopting a hybrid spectrum allocation mode to reduce interference generated by activated D2D communication and received by cellular users outside the rejection area so as to realize interference suppression; thirdly, based on the established model and the interference suppression method, evaluating the key performance indexes of the cellular users and the D2D users by three analysis methods proposed based on a random geometry theory under the setting of a rejection region of a given base station, so as to find an optimal rejection region; finally, making a decision and publishing same. Decisions made by adopting the method can be effective in a long time range, a large amount of complex calculation and resource consumption caused by frequent decisions are avoided, the method has the advantages of being simple, rapid and universal, signaling overhead and system complexitycan be remarkably reduced, and user burden can be reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to an interference suppression method of an underlying inter-device communication cellular network. Background technique [0002] The explosion of emerging devices and high-speed applications has exacerbated the imbalance between the growing demand for radio spectrum resources and the limited available spectrum resources. To solve this problem, a promising technique is to integrate device-to-device (D2D) into cellular communication. This is because it has advantages such as high spectral efficiency, low latency and reduced base station load. According to the spectrum sharing system of D2D communication and cellular communication, it can be divided into overlay sharing (overlay) and underlay sharing (underlay) modes, in which the underlay mode has higher spectrum utilization, but introduces serious Mutual interference, reducing the communication performance. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/04H04W4/70H04W16/14H04W72/54
CPCH04W72/0453H04W4/70H04W16/14H04W72/51H04W72/541H04W72/542
Inventor 邓娜陈立波
Owner DALIAN UNIV OF TECH
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