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Fuzzy parameter power control method for D2D communication in LTE-A system

A technology of LTE-A, 1.LTE-A, which is applied in the field of communication fuzzy parameter power control, and can solve problems such as the upper limit of D2D communication transmission power

Active Publication Date: 2015-10-28
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

The principle of adopting power control in a cellular system with D2D communication (D2D multiplexing resource mode) is to maximize the emission of D2D communication users under the premise of meeting the minimum threshold of communication quality of cellular communication users using the same time-frequency resources. Power, increase its own signal to interference and noise ratio, but the transmission power of D2D communication has a specified upper limit

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  • Fuzzy parameter power control method for D2D communication in LTE-A system
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  • Fuzzy parameter power control method for D2D communication in LTE-A system

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specific Embodiment approach 1

[0073] Specific implementation mode 1. Combination figure 1 Describe this specific implementation mode, the D2D communication fuzzy parameter power control method under the LTE-A system,

[0074] Step 1. Determine the threshold value SINR_th of cellular communication user communication:

[0075] The threshold value SINR_th refers to the SINR value of the information received by the base station (eNodeB) from the cellular communication user, and this SINR value is the lowest value for realizing normal communication.

[0076] To calculate the threshold value SINR_th, it is first necessary to determine the evaluation value PL (dB) of the downlink path transmission loss of the cellular user terminal. According to the 3GPP 36.213 protocol, PL (dB) is obtained by weighting the path loss at the previous moment and the path loss measured at the current moment, and the PL (dB) value will be updated after each measurement. The calculation formula is:

[0077] PL ...

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Abstract

The invention discloses a D2D communicating fuzzy parameter power control method under an LTE-A system, and relates to a D2D communicating fuzzy parameter power control method. The control method aims to realize D2D communicating fuzzy parameter power control under the LTE-A system. The D2D communicating fuzzy parameter power control method comprises the steps of determining a threshold value SINR_th of communication of a cellular communication user, generating fuzzy parameter control original input signals, weighting the fuzzy parameter control original input signals, conducting fuzzy reasoning and fuzzy controlling, adjusting emitting power of a D2D user under a cellular network, and working out real-time SINR values of the cellular communication user by a base station. The D2D communicating fuzzy parameter power control method is applicable to D2D communicating fuzzy parameter power control under the LTE-A system.

Description

technical field [0001] The invention relates to a communication fuzzy parameter power control method. Background technique [0002] With the rapid development of mobile communications, the number of cellular network users has increased dramatically. Today, when spectrum resources are very tight, improving spectrum utilization has become a research hotspot in the field of mobile communications. Relevant studies have shown that adopting a device to device (Device to Device, D2D) communication technology in a cellular system can greatly improve the spectrum utilization rate of the cellular system and increase the system capacity of the cellular cell. When D2D communication is adopted in the cellular system, its spectrum usage is divided into: using spectrum resources orthogonal to the spectrum of cellular communication users (D2D orthogonal resource mode); reusing spectrum resources currently used by cellular communication users (D2D communication multiplexing resource mode) )...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04W52/08H04W72/12
Inventor 张莉吴玮吴宣利管修挚沙学军李卓明
Owner HARBIN INST OF TECH