Method for downlink control channel interference coordination in layered heterogeneous network

A control channel and heterogeneous network technology, applied in wireless communication, digital transmission systems, electrical components, etc., can solve the problems of poor quality and unresolved wireless link quality, and achieve the goal of avoiding cross-layer interference and avoiding same-layer interference Effect

Inactive Publication Date: 2012-10-03
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The R1-102350 proposal submitted by Qualcomm evaluates the advantages and disadvantages of these methods, and concludes that although these methods reduce the interference of the HeNB to the MUE, none of them solve the problem of poor radio link quality after the MUE enters the CSG

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  • Method for downlink control channel interference coordination in layered heterogeneous network
  • Method for downlink control channel interference coordination in layered heterogeneous network
  • Method for downlink control channel interference coordination in layered heterogeneous network

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples serve to illustrate the present invention, but do not limit the scope of the present invention.

[0029] Such as figure 1 As shown, the downlink control channel interference coordination method in the layered heterogeneous network of the present invention comprises steps:

[0030] S101, discover victim user equipment (victim UE);

[0031] S102, the downlink control channel performs interference detection, and the victim UE reports interference information to the home base station (eNB);

[0032] S103, the macro base station (MeNB) and the home base station (HeNB) exchange interference coordination information;

[0033] S104, the MeNB and the HeNB divide the resources occupied by the entire downlink control channel into control channel element (CCE) groups, and the MeNB and the HeNB...

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Abstract

The invention discloses a method for downlink control channel interference coordination in a layered heterogeneous network. The method comprises steps of S101, discovering victim user equipment (UE); S102, performing interference detection for a downlink control channel and enabling the victim UE to report interference information to evolved node B (eNB) which the victim UE belongs to; S103 enabling macro evolved node B (MeNB) and home evolved node B (HeNB) to perform interaction of interference coordination information; S104, enabling the MeNB and the HeNB to divide resources occupied by the whole downlink control channel into control channel element (CCE) groups, wherein the MeNB and the HeNB occupy respectively CCE groups which are not overlapped; S105, enabling control channel resources which are respectively occupied by the MeNB and the HeNB to be respectively instructed to macrocell user equipment (MUE) and femtocell user equipment (FUE) through broadcast channels; and S106, enabling the MUE and the FUE to perform blind deconvolution of the downlink control channel in accordance with corresponding control channel resources. The method can avoid cross-layer interference and same-layer interference.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a downlink control channel interference coordination method in a layered heterogeneous network. Background technique [0002] Due to the improvement of service requirements, relying on the traditional cell splitting technology can no longer meet the needs of data transmission. In the future 4G system, it is necessary to introduce extra enhanced nodes, such as indoor and outdoor picocells, femtocells ( femtocell), relay nodes, etc. [0003] Among them, the femtocell is oriented to home services, and is also called a home base station (HeNB, Home eNB). Usually, the femtocell and the macrocell are co-channel deployed, and the femtocell only serves a Closed Subscribe Group (CSG, Closed Subscribe Group). The so-called CSG means that the HeNB only allows pre-registered users to access the HeNB, and unregistered users cannot access the HeNB even if they are within the coverage of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L5/00
Inventor 田辉张平林尚静刘宝玲
Owner BEIJING UNIV OF POSTS & TELECOMM
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