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Multi-point coordination-based data transmission method and device

A data transmission method and multi-point coordination technology, applied in the field of data transmission method and device based on multi-point coordination, to achieve the effect of reducing the amount of data interaction and improving detection performance

Inactive Publication Date: 2011-01-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention is proposed for the problem that there is no specific implementation of the processing scheme for data transmission based on coordinated multi-point at present. Therefore, the main purpose of the present invention is to provide a data transmission scheme based on coordinated multi-point to solve the above problems

Method used

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  • Multi-point coordination-based data transmission method and device
  • Multi-point coordination-based data transmission method and device

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Experimental program
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Embodiment 1

[0056] Figure 7 is a schematic diagram of coordinated multi-point coordination among 3 base stations according to an embodiment of the present invention, such as Figure 7 As shown, the serving cell is cell A, the cooperating cells are cell B and cell C, both of which belong to type A cooperating cells, the coordinating user is user a, and the scheduling users b and c belong to cooperating cell B and cooperating cell C respectively.

[0057] The received signals of cells A, B, and C are:

[0058] R A = H Aa x a + ( H Ab x b + ...

Embodiment 2

[0099] Based on the first embodiment, assuming that the serving cell can correctly estimate the channel from the scheduled user in the coordinated cell to the serving cell, the coordinated cell detects the received data in the coordinated resources, and only sends the detected correct data to the serving cell. For a Class A cooperative cell, if the data of the scheduling user is detected correctly, the data of the scheduling user will be sent to the serving cell; if the data of the cooperative user is detected correctly, the data of the cooperative user will be sent to the serving cell; If it is correct, the two kinds of data will be sent to the serving cell at the same time. If the two kinds of data are detected incorrectly, no data will be sent to the serving cell; cell, if the detection is wrong, no data will be sent to the serving cell.

Embodiment 3

[0101] Based on Embodiment 1, Embodiment 2 is simplified. The serving cell and the coordinating cell respectively process the data in the cooperating resource, and when the cooperating cell receives the control signaling that needs to transmit the coordinating data sent by the serving cell, it detects the received data of the coordinating user , if the data of the cooperative user is correctly detected, the data of the detected cooperative user is fed back to the serving cell, otherwise, no data is fed back to the serving cell.

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Abstract

The invention discloses a multi-point coordination-based data transmission method and a multi-point coordination-based data transmission device. The method comprises the followings steps of: receiving user data in coordinated resources and detecting coordinated user data from the user data by using a serving cell; and if the coordinated user data is detected to be false, informing coordinated cells of transmitting detected coordinated resource data to the serving cell and processing according to received feedback information from all of the coordinated cells. The method and the device reduce data interaction amount between base stations and improve system detection performance.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for data transmission based on coordinated multi-point. Background technique [0002] In 3G long term evolution (Long Term Evolution, LTE for short), the throughput of the cell edge users is much lower than the throughput of the central area users. Using the receiving antenna cooperation of multiple cells to achieve high capacity and reliable transmission of the wireless link of the cell edge users has become the focus of research, which is the uplink multi-point coordinated technology. At present, Long term evaluation-Advanced (abbreviated as LTE-A) has introduced a coordinated multiple point (Coordinated Multiple Point transmission and reception, hereinafter referred to as CoMP) technology. [0003] Coordinated multi-point transmission is similar to traditionally known distributed antenna technology, figure 1 is a schematic diagram of a coordinated multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/02H04B7/04H04W92/20
CPCH04B7/022H04W28/04
Inventor 田开波李晓辉赵楠李峰魏民牛军涛彭爱华薛鑫任敏
Owner ZTE CORP
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