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Data transmission method, device and system applied in multi-layer multi-cell mode

A data transmission method and multi-cell mode technology, applied in the field of communication, can solve problems such as large signal interference

Inactive Publication Date: 2015-05-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a data transmission method applied in a multi-layer multi-cell mode to solve the mutual interference of signals transmitted in links of the same transmission direction (including uplink and downlink) between layers in the prior art bigger problem
[0006] The embodiment of the present application also provides a data sending device applied in multi-layer multi-cell mode, which is used to solve the mutual problem of signals transmitted in links of the same transmission direction (including uplink and downlink) between layers in the prior art. Interfering issues
[0007] The embodiment of the present application also provides a data transmission system applied in the multi-layer multi-cell mode, which is used to solve the mutual problem of signals transmitted in links of the same transmission direction (including uplink and downlink) between layers in the prior art. Interfering issues

Method used

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  • Data transmission method, device and system applied in multi-layer multi-cell mode

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Embodiment 1

[0036] In order to solve the problem in the prior art that the signals transmitted in links of the same transmission direction (including uplink and downlink) between layers interfere with each other greatly, Embodiment 1 of the present application provides a multi-layer multi-cell mode data sending method. In order to facilitate the understanding of this solution, the first base station can be set as a macro base station, and the second base station can be set as a micro base station; the specific implementation flow chart of this method is as follows image 3 As shown, it mainly includes the following steps:

[0037] Step 31, the first base station sends downlink data using the first time-frequency resource when the second base station receives the uplink data sent using the first time-frequency resource;

[0038] Specifically, when the first base station and the second base station work in the co-channel TDD mode:

[0039] The first base station may use the first time-fre...

Embodiment 2

[0059] Embodiment 2 provides a data sending device applied in a multi-layer multi-cell mode to solve the problem of mutual interference between signals transmitted in links of the same transmission direction (including uplink and downlink) between layers in the prior art. Big question. The specific structural diagram of the device is shown in Figure 9 As shown, a first sending unit 91 and a second sending unit 92 are included. The specific introduction of these two functional units is as follows:

[0060] The first sending unit 91 is configured to use the first time-frequency resource to send downlink data when the second base station receives the uplink data sent by using the first time-frequency resource;

[0061] The second sending unit 92 is configured to use the second time-frequency resource to send uplink data when the second base station uses the second time-frequency resource to send downlink data;

[0062] Wherein, the data sending device and the second base stat...

Embodiment 3

[0070] Embodiment 3 provides a data transmission system applied in a multi-layer multi-cell mode, which is used to solve the problem of mutual interference between signals transmitted in links of the same transmission direction (including uplink and downlink) between layers in the prior art. Big question. The system includes a first base station and a second base station. The details are as follows:

[0071] The first base station may be configured to use the first time-frequency resource to send downlink data when the second base station receives the uplink data sent by using the first time-frequency resource;

[0072] The second base station may be configured to use the second time-frequency resource to send uplink data when the second base station uses the second time-frequency resource to send downlink data;

[0073] Wherein, the first base station and the second base station are respectively base stations of different layers in the multi-layer multi-cell mode.

[0074]...

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Abstract

The invention discloses a data transmission method applied in a multi-layer multi-cell mode. The data transmission method applied in the multi-layer multi-cell mode is used for solving the problem that in the prior art, mutual interference of signals transmitted in links in different layers in the same transmission directions including the uplink direction and the downlink direction is severe. The data transmission method specifically comprises the steps that a first base station transmits downlink data through a first time-frequency resource when a second base station receives uplink data transmitted through the first time-frequency resource; the first base station transmits the uplink data through a second time-frequency resource when the second base station transmits the downlink data through the second time-frequency resource, wherein the first base station and the second base station are located in different layers in the multi-layer multi-cell mode. The invention further discloses a data transmission device and system applied in the multi-layer multi-cell mode.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a data sending method, device and system applied in a multi-layer multi-cell mode. Background technique [0002] In a multi-layer multi-cell heterogeneous network, available time-frequency resources are limited. Generally, in TDD mode, macro base stations and micro base stations work on non-overlapping frequency spectrums. like figure 1 As shown, it is a schematic diagram of the respective frequency bands used by the macro base station and the micro base station in the multi-layer multi-cell heterogeneous network in the TDD mode. Wherein, the axis of abscissa represents the time slot, and the axis of ordinate represents the frequency resources occupied by the uplink and downlink during data transmission. The disadvantage of this mode is that, no matter for the macro base station or the micro base station, the available spectrum width is relatively narrow. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04W52/14
Inventor 龙航席雨张玉艳姚楠邵斌张颖凯
Owner BEIJING UNIV OF POSTS & TELECOMM