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Interference signal processing method and device

A technology that interferes with signals and equipment, applied in the field of communication, can solve problems such as high feedback overhead, difficult performance guarantee, and influence of useful signal strength

Active Publication Date: 2014-07-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For CBF, SLNR needs the terminal to feedback noise, and the feedback overhead is relatively large. ZF needs to estimate the channel state information of cooperative users, and at the same time, it has an impact on the useful signal strength, and the performance is difficult to guarantee.

Method used

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  • Interference signal processing method and device
  • Interference signal processing method and device

Examples

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Embodiment 1

[0080]Long Term Evolution-Release9 (LTE-Rel9) introduces Multi-User Beamforming (MUBF) and uses Demodulation Reference Signal (DMRS) Antenna Port to ensure MUBF pilot Orthogonality among them to realize transparent MUBF (transparency means that UE does not need to know whether it is transmitting for MUBF, and does not need to know whether other users share the same time-frequency resources with it), and the MUBF receiver can have multiple situations, For example, the terminal performs minimum mean square error (Minimum Mean Square Error, MMSE) detection according to its own flow number, or uses Interference Reject Combining (Interference Reject Combining, IRC) detection (estimating the statistical interference covariance matrix of paired users and other interference signals, and performing IRC detection); or perform MMSE detection according to the total number of paired flows, and discard the virtual flow detection results to achieve the effect of interference suppression. The ...

Embodiment 2

[0103] refer to figure 2 , figure 2 It is a flowchart of a method for processing an interference signal provided in Embodiment 2 of the present invention. Such as figure 2 As shown, the method includes the following steps:

[0104] Step 201, determine edge user scheduling configuration parameters, interfering cell information and / or serving cell information; the scheduling configuration parameters include at least scheduling resource location, pilot port number, and reference signal initialization parameters, and the reference signal initialization parameters include at least interference code identification, the introduced pilot sequence initialization seed value, slot number n s ; The interfering cell information includes at least the identification number of the interfering cell that interferes with the edge user signal; the serving cell information includes at least the serving cell identification number of the edge user;

[0105] Wherein, the edge user is a user wh...

Embodiment 3

[0120] refer to image 3 , image 3 It is a flowchart of a method for processing an interference signal provided in Embodiment 3 of the present invention. Such as image 3 As shown, the method includes the following steps:

[0121] Step 301, the interfering cell receives the scheduling configuration parameters sent by the serving cell of the edge user through a private interface or an X2 interface;

[0122] Step 302, the interfering cell coordinates the scheduling configuration parameters of the scheduling users of the interfering cell according to the scheduling configuration parameters.

[0123] As an optional embodiment, the method also includes:

[0124] After receiving the coordination information, the interfering cell maintains a timer, and when no coordination request from the serving cell is received within a predetermined time, the interfering cell does not coordinate with the serving cell.

[0125] Optionally, the interfering cell coordinates scheduling configur...

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Abstract

Disclosed are an interference signal processing method and device. In the method, a serving cell of an edge user measures information about an interference cell, and sends the information to the interference cell, so that the interference cell coordinates a pilot configuration parameter according to the information, thereby reducing interference signals generated by the interference cell for the edge user.

Description

technical field [0001] The invention belongs to the field of communication, and in particular relates to a method and equipment for processing interference signals. Background technique [0002] The mainstream networking scenarios of 3G Long Term Evolution (LTE) and LTE Subsequent Evolution (Long Term Evolution-Advanced, LTE-A) are co-frequency networking. For cell edge users, the inter-cell interference is very serious. In order to To solve this problem, LTE-A, namely Rel-10 and Rel-11, proposed the concept of coordinated multi-point transmission (Coordinated Multi-Point, CoMP) (coordination between cells in LTE-A to achieve the purpose of interference suppression or interference utilization), The purpose is to solve the same-frequency interference problem and improve the capacity of the cell. [0003] According to whether the serving cell and the coordinated cell share a site, COMP is divided into inter-site CoMP Inter-eNB CoMP and intra-site CoMP Intra-eNB CoMP. Accordi...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04L25/03H04W24/04
CPCH04W36/20H04W16/10H04W72/542
Inventor 易雄书
Owner HUAWEI TECH CO LTD
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