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A method and device for interference suppression transmission

A technology for interference equipment and interference suppression, applied in transmission systems, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as no cross-link interference coordination mechanism

Active Publication Date: 2021-05-11
HISENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and equipment for interference suppression transmission to solve the problem that there is currently no effective cross-link interference coordination mechanism

Method used

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  • A method and device for interference suppression transmission
  • A method and device for interference suppression transmission
  • A method and device for interference suppression transmission

Examples

Experimental program
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Effect test

Embodiment 1

[0160] Assuming a 3AP cooperative cluster, the interference pattern can be divided into traditional co-directional interference, that is, all three cells perform UL or DL; and cross interference, that is, three cells partially perform DL and UL.

[0161] The key methods involved in the present invention are described below in four scenarios:

[0162] Scenario (1) Full DL transmission.

[0163] Such as Figure 5 As shown, for DL ​​transmission, the basic idea is that the AP uses some random beams for DL ​​transmission. In each cell, the terminal feeds back the scheduling index to the AP, and the AP selects the user with the largest scheduling index for transmission according to the feedback.

[0164] More specifically, AP k The transmission beam p k are chosen independently at random, the UE k,n The useful signal power of is expressed as k∈Φ DL ,, Φ DL For downlink transmission AP, UE k,n The corresponding interference signal power is expressed as The user scheduling...

Embodiment 2

[0227] Assuming that the AP and the terminal have two antennas respectively, the overall performance index is the average sum rate of the three sector networks in the three cells, and the final simulation results pass the average of 10 4 obtained from the channel correlation results achieved by channels.

[0228] The large-scale fading coefficient of the channel is β=10 -3.53 ×‖Receiver Distance‖ -3.76 , the small-scale fading is Rayleigh fading which obeys the complex Gaussian distribution with zero mean and unit covariance. The radius of the microcell is 50m, the carrier frequency is 1800MHz, the system bandwidth is 1MHz, and the receiver noise power spectral density is -174dBm / Hz. The transmit power ratio is set to α=P U / P A = 0.1, that is, the maximum transmit power of the AP in the network is 2W, and the maximum power of the terminal is 0.2W. In the example, we will mainly discuss P A The impact of changes on the system, where P U proportional change.

[0229] Amo...

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Abstract

The invention discloses a method and equipment for interference suppression transmission, which are used to solve the problem that there is no effective interference coordination mechanism at present. In the embodiment of the present invention, first, the interfered AP determines the interference steering information for assisting the interference device in adjusting beamforming; then the interfered AP sends the interference steering information to the interference device, so that the interference device follows the interference steering The information adjusts beamforming to reduce the interference to the device; wherein the interference device includes an interference AP and / or an interference terminal. In the above method, after receiving the interference steering information, the interfering AP adjusts beamforming according to the interference steering information, thereby reducing interference to the interfered AP.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and equipment for interference suppression transmission. Background technique [0002] With the explosive growth of mobile terminals and the continuous improvement of user traffic demands, it is difficult for traditional cellular networks to fully meet people's needs. Compared with the 4G system, the 5G mobile communication system has achieved a 1000-fold increase in network capacity. Reducing the radius of the cell, densely deploying communication nodes, and obtaining greater cell splitting gains are the key means to achieve this goal. As a result, ultra-dense networks, as a flexible and economical network architecture, have received extensive attention in recent years. Ultra dense network is a further evolution of cell enhancement technology. In the ultra-dense network, the density of low-power transmission nodes is further increased, the cover...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B1/12H04B7/06H04B7/08
CPCH04B1/10H04B1/12H04B7/0617H04B7/086H04B7/06H04B7/08H04W72/04
Inventor 刘敏高晖信金灿谭元德
Owner HISENSE
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