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Interference eliminating method and system for TD-LTE network

A technology for interference elimination and networking, applied in advanced technology, electrical components, power management, etc., can solve problems such as cross-interference

Active Publication Date: 2015-03-25
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] Therefore, when in the flexible subframe set, cross interference may occur, that is, eNB-to-eNB interference, UE-to-UE interference

Method used

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  • Interference eliminating method and system for TD-LTE network
  • Interference eliminating method and system for TD-LTE network
  • Interference eliminating method and system for TD-LTE network

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Embodiment Construction

[0067] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0068] The present invention selects a specific uplink subframe according to certain criteria, and the eNB configures all UEs served by it not to send any data in the uplink subframe, and the eNB measures the received power of the reference signal sent by the adjacent cell in the uplink subframe, and the eNB passes The measurement results are compared to determine the strongest interfering neighbor cell. The eNB configures all UEs it serves to perform RRM measurement on the strongest interfering neighboring cell, and the eNB selects the UE with the largest RSRP according to the RSRP measurement result fed back by the UE. The eNB configures and stores the selected CQIs of different downlink subframes fed back by the UE. When the eNB is in the downlink subframe in the flexible subframe set, it determines whether the strongest ...

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Abstract

The invention relates to an interference eliminating method and system for a TD-LTE network. The interference eliminating method for the TD-LTE network comprises the steps that a certain uplink subframe in a flexible subframe set is selected for configuration according to the current uplink and downlink time slot configuration, an adjacent cell which disturbs the network most seriously is selected according to reference signal receiving powers, from adjacent cells, measured by eNB, UE is configured for conducting RRM measurement on the selected adjacent cell, and the UE with the highest SRP is selected; if the current subframe of the eNB is a downlink subframe in the flexible subframe set, whether the selected adjacent cell is an uplink subframe or a downlink subframe at the moment is judged, and if the selected adjacent cell is a downlink subframe at the moment, transmitting power of the current downlink subframe is lowered through the eNB according to a preset criterion. According to the interference eliminating method and system for the TD-LTE network, the cross interference eliminating effect is good, and the method and system are easy to obtain.

Description

technical field [0001] The technical field that the present invention relates to is a wireless communication system, and more specifically, the present invention relates to a method for eliminating cross interference in a TD-LTE network. Background technique [0002] With the current development of 4G technology, various operators have also begun to deploy TD-LTE network. Due to the asymmetric design of TD-LTE uplink and downlink, it provides some unique functions for TD-LTE network, which can make better use of TD-LTE. However, there are also some unique problems of TD-LTE network that need to be solved. [0003] Common terms related to TD-LTE network are as follows: [0004] [0005] The following is a brief introduction to TD-LTE. [0006] TD-LTE uplink and downlink time slot configuration: [0007] For TD-LTE, seven flexible uplink and downlink time slot configurations are provided, and the specific configurations are shown in Table 1. Where D represents a downlin...

Claims

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Application Information

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IPC IPC(8): H04W24/02
CPCH04W24/02H04W52/243H04W72/541Y02D30/70
Inventor 李小龙黄小军王俊姜杉陈亮明
Owner WUHAN HONGXIN TELECOMM TECH CO LTD
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