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TD-lte co-frequency adjacent cell uplink and downlink mixed configuration networking interference signal elimination method

A technology for adjacent cells and interference signals, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of downlink transmission power, reduction of interference cells, and downlink QoS of edge users, etc., to achieve simple steps and guaranteed The effect of network signal quality and flexible network configuration

Active Publication Date: 2019-03-08
JIANGSU SINOLTE WIRELESS TECH
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  • Abstract
  • Description
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Problems solved by technology

[0006] At present, the main methods to solve this problem are as follows: first, if the same TD-LTE cell uses the same frequency networking, then all cells in the same area need to configure the same uplink and downlink ratio, but this will lose the flexibility of network configuration; first, reduce interference The downlink transmission power of the cell will reduce the coverage of the cell, resulting in a decrease in the downlink QoS of edge users

Method used

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  • TD-lte co-frequency adjacent cell uplink and downlink mixed configuration networking interference signal elimination method
  • TD-lte co-frequency adjacent cell uplink and downlink mixed configuration networking interference signal elimination method
  • TD-lte co-frequency adjacent cell uplink and downlink mixed configuration networking interference signal elimination method

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 with figure 2 As shown, the present invention has designed the TD-LTE adjacent cell hybrid network interference signal elimination method to eliminate the interference of the downlink signal of the interfering cell to the uplink signal of the interfered cell. In practical application, the following steps are included:

[0035] Step 01. The interfering cell sends its downlink configuration parameter information to the interfered cell through the X2 interface between the two cells. The downlink configuration parameter information includes the cell ID number and the cell antenna port number. The interfered cell receives the downlink configuration information of the interfering cell. Configure parameter information to generate the standard downlink reference signal RS of the interfering cell INFCEL...

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Abstract

The invention relates to a method for eliminating interference signals of time division-long term evolution (TD-LTE) same frequency uplink-downlink hybrid configuration networking of neighbor cells. According to the TD-LTE network, the steps are simple. Frequency domain data of an interfering cell signal of signals received by an interfered cell is reconstructed, so that an interference signal is obtained; and then the interference signal is subtracted from an uplink received signal of the interfered cell by the interfered cell, so that the interference signal in an uplink signal of the interfered cell is eliminated. Through adoption of the technical scheme, the network configuration can be more flexible and good network signal quality is guaranteed, while the cell coverage area is guaranteed.

Description

technical field [0001] The invention relates to a method for eliminating interference signals in a TD-LTE co-frequency adjacent cell mixed uplink and downlink matching ratio networking. Background technique [0002] With the advent of the 4G era, TD-LTE technology is becoming one of the mainstream technologies in the 4G era. In the TD-LTE system, the duration of a radio frame is 10ms, each radio frame includes 10 subframes, and the duration of each subframe is 1ms. In order to meet the different needs of uplink and downlink services in different coverage areas, the TD-LTE system provides six uplink ratios for operators to choose from, as shown in Table 1-1. For areas where uplink and downlink services are relatively balanced, you can use uplink Line ratio 1, that is, D S U U D is configured with a period of 5ms; in areas with a large amount of downlink traffic, uplink and downlink ratio 2 can be used, that is, DSUDD is configured under a 5ms period [0003] [0004] Tab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16
Inventor 于大雷
Owner JIANGSU SINOLTE WIRELESS TECH
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