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Interference cancellation method and apparatus

A technology of interference cancellation and interference link, applied in the field of communication, can solve the problems of adjacent frequency cross link interference and so on

Active Publication Date: 2018-07-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a method and device for eliminating interference, so as to at least solve the problem of adjacent frequency cross-link interference caused by flexible duplexing in the related art

Method used

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  • Interference cancellation method and apparatus
  • Interference cancellation method and apparatus
  • Interference cancellation method and apparatus

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Experimental program
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Embodiment 1

[0089] In this embodiment, a method for eliminating interference is provided, figure 1 is a flowchart of an interference elimination method according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0090] Step S102, the transmission device performs a preprocessing operation on a predetermined resource;

[0091] In step S104, the transmission device performs transmission strategy adjustment or interference elimination processing according to the result of the preprocessing operation, and performs transmission.

[0092] Optionally, in this embodiment, the application scenarios of the interference cancellation method include but are not limited to: adjacent-frequency coexistence of NR and LTE, adjacent-frequency coexistence of different service types, and adjacent-frequency coexistence between different operators. In this application scenario, the transmission device performs a preprocessing operation on a predet...

Embodiment 2

[0168] This embodiment proposes a method for reducing, or eliminating, or avoiding cross / cross-link interference in adjacent frequency scenarios. For example, interactive information. In this embodiment, adjacent frequency bands / carriers are taken as an example for illustration, and cross-link interference between adjacent frequency bands / carriers is reduced, or eliminated, or avoided through measurement.

[0169] The above measurement mainly measures the interference on the following three links: base station-base station interference; terminal-terminal interference; base station-terminal interference.

[0170] First, resources for measuring interference are defined. Optionally, the resource for measuring base station-base station interference is different from, or the same as, the resource for measuring terminal-terminal interference. The positions of resources for measuring interference on adjacent frequency bands / carriers may be aligned or may not be aligned.

[0171] T...

Embodiment 3

[0188] This embodiment proposes a method for reducing, or eliminating, or avoiding cross / cross-link interference in adjacent frequency scenarios. (priority method)

[0189] The following will take the coexistence scenario of NR and LTE in adjacent frequency bands / carriers, and the scenario of coexistence of different operators in adjacent frequency bands / carriers as an example. In this embodiment, priority is mainly used to reduce, or eliminate, or, A method to avoid interference between nodes operating on adjacent frequency bands / carriers. In fact, the belonging priority method can be used in combination with measurement, and / or perception, and / or scheduling, and other methods.

[0190] Scenario 1: NR and LTE coexist in adjacent frequency bands / carriers.

[0191] LTE is an existing network system, while NR is a new access technology. Considering the backward compatibility of NR design, NR design needs to consider the transmission characteristics of the existing LTE system ...

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Abstract

The invention provides an interference cancellation method and apparatus. The method comprises the following steps: a transmission device performs a preprocessing operation on a predetermined resource; and the transmission device performs transmission policy adjustment or interference cancellation processing according to the result of the preprocessing operation, and performs transmission. By adoption of the interference cancellation method and apparatus provided by the invention, the problem of adjacent channel cross link interference caused by a flexible duplex mode in the related art is solved, and then the effect of reducing the adjacent channel cross link interference is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an interference elimination method and device. Background technique [0002] With the increase of new mobile devices, the continuous growth of communication services and the continuous increase of network traffic, the existing wireless technology can no longer meet the needs of future communication. Compared with the previous generations of mobile communications, the fifth generation of mobile communications technology (5thGeneration, referred to as 5G) will provide more energy for services, and in the face of the differentiated performance requirements of various scenarios, it is difficult for 5G to use a certain Solutions for all scenarios are formed based on a single technology. [0003] 5G main technical scenarios, key challenges and applicable key technologies released by the IMT2020 (5G) promotion group. Among them, the main application scenarios include: mobile broadba...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W72/04
CPCH04W72/0453H04W72/0446H04W72/541H04W72/542H04W72/04H04W72/54
Inventor 杨玲赵亚军李新彩徐汉青
Owner ZTE CORP
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