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Method for setting downlink adaptive parameters in base station of wireless communication network

A wireless communication network and downlink technology, applied in the field of downlink adaptive parameter setting, can solve the problems of not considering the influence of power adjustment, enhanced interference of adjacent cells, and unsatisfactory performance, so as to improve performance and resource utilization efficiency effect

Active Publication Date: 2016-10-26
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

However, the performance of this scheme is not ideal in interference-limited systems, such as 3GPP LTE systems, because the adjustment scheme does not consider the impact of power adjustment on co-channel interfered cells
This method may bring the following results, because the power of the cell increases, and the interference to the adjacent cells also increases, so the overall cell data rate does not increase

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  • Method for setting downlink adaptive parameters in base station of wireless communication network
  • Method for setting downlink adaptive parameters in base station of wireless communication network
  • Method for setting downlink adaptive parameters in base station of wireless communication network

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Embodiment Construction

[0013] In order to deal with the above problems, the present invention proposes an adaptive link parameter adjustment method. The solution of the present invention optimally adjusts the transmission link parameters, including the transmission power, based on the channel environment and the interference conditions to the served user terminal. , Modulation and Coding Scheme (MCS). In the present invention, the base station first saves the respective main interference source base stations and corresponding path gains for all served user terminals. Then, after the user terminal measures and reports the channel quality information to the base station, the user terminal will update the related power density function based on the rules of the game theory. The new power density function will be used for subsequent PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) transmission to the user terminal.

[0014] First, the optimal power allocation will be calculate...

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Abstract

The present invention proposes a method for setting downlink adaptive parameters in a base station of a wireless communication network, which includes the following steps: determining whether it is necessary to calculate the downlink user transmission power density on the downlink data sharing channel of the base station; when When it is necessary to calculate the downlink user transmission power density, determine the downlink data sharing channel of the base station based on the signal-to-interference-to-noise ratio between the base station and the user terminals under the jurisdiction of the base station and the interference of the base station to adjacent cells. Downlink user transmission power density.

Description

technical field [0001] The present invention relates to a wireless communication network, in particular to a method for setting downlink adaptive parameters in a base station of the wireless communication network. Background technique [0002] In order to improve system performance, Heterogeneous networks (HetNet) are widely discussed in the further in-depth Long Term Evolution-Advanced (LTE-A) work item. In the heterogeneous network, in addition to the traditional macro base station (macro eNB, MeNB), it also includes other small base stations, such as pico, femto and relay eNodeB, these small base stations have not been well planned and optimized . These small base stations will bring more interference to the system, and thus these base stations will become a performance limiting factor. At present, in the case where only macro base stations are deployed, in order to simplify configuration, the same transmission power is configured for each resource block of the Physical...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W72/08H04W92/20H04W72/54
Inventor 王宇鹏王栋耀沈钢
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD