Cell interference coordination method in heterogeneous network and heterogeneous network
A heterogeneous network and cell interference technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve the problems of reducing the spectral efficiency of Pico cell edges, not supporting carrier aggregation cell interference coordination schemes, and affecting the quality of cell edge services, etc.
Active Publication Date: 2017-12-01
CHINA TELECOM CORP LTD
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When the Pico base station is close to the macro base station, the downlink signal of the macro base station will cause great interference to the downlink channels of the users at the edge of the Pico cell receiving the carriers f1 and f2 from the Pico base station, which reduces the spectral efficiency of the Pico cell edge and affects the carrier Quality of Service at Cell Edge in Converged Heterogeneous Networks
[0008] However, LTE R10 eICIC only targets cell interference in non-carrier aggregation heterogeneous networks, and currently there is no cell interference coordination scheme in heterogeneous networks that support carrier aggregation
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[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise.
[0030] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.
[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0032] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification.
[0033] In all examples shown and...
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The invention discloses a cell interference coordination method in a heterogeneous network and the heterogeneous network. The method includes: the first base station does not transmit control information on at least one subframe of at least one frequency-domain carrier in the component carrier, and obtains configuration information about the aggregated carrier of the first base station; Control information is not transmitted on one or more subframes other than the at least one subframe, and control information is transmitted on the at least one subframe. Through this method, each base station can use the subframe position where the adjacent base station does not transmit control information as the control channel for the base station to send signals, so that the control channels between each other will not be interfered by the adjacent base stations, thereby realizing carrier aggregation. The cell interference coordination in the heterogeneous network improves the spectrum efficiency at the cell edge, thereby improving the service quality at the cell edge in the heterogeneous network supporting carrier aggregation.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a cell interference coordination method in a heterogeneous network and the heterogeneous network. Background technique [0002] Long Term Evolution (LTE) technology is a new generation wireless communication system launched by 3GPP. The initial deployment of the LTE network usually adopts a large-bandwidth co-frequency networking method. In the same-frequency networking mode, each adjacent cell uses the same carrier. Therefore, users in adjacent cells, especially those at the edge of the cell, may receive the same signal from two or more cells at the same time. frequency signal. When the same-frequency signals from each cell are strong, the user's communication will be severely interfered. In order to solve the problem of mutual interference between cells in the same-frequency networking mode, Inter-cell Interference Coordination (ICIC) is proposed. ICIC contro...
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IPC IPC(8): H04L1/00H04L5/00
Inventor 张光辉孙震强朱彩勤卞宏梁宋谱
Owner CHINA TELECOM CORP LTD