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Method, system and device for transmitting data

A transmission method and data technology, applied in the field of communication, can solve problems such as channel measurement and interference affecting CSI-RS, and achieve the effect of avoiding interference and improving transmission performance

Active Publication Date: 2011-05-18
CHINA MOBILE COMM GRP CO LTD
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AI Technical Summary

Problems solved by technology

If the existing data transmission method is used, the interference of the data RE of the adjacent base station on the CSI-RS pilot symbol of the current base station cannot be avoided, which seriously affects the channel measurement of the CSI-RS

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  • Method, system and device for transmitting data
  • Method, system and device for transmitting data
  • Method, system and device for transmitting data

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Embodiment Construction

[0066] In the embodiment of the present invention, aiming at the problem of interference of data REs on CSI-RS pilot symbols in a coordinated multi-point transmission system in the prior art, a coordinated multi-point data transmission method is proposed to avoid adjacent Interference of cell data REs on CSI-RS pilot symbols.

[0067] Specifically, in the existing coordinated multi-point transmission system, the base station side needs more channel information for signal processing, that is, the base station side needs to add a signaling to notify the user of a channel information measurement set; the channel information measurement set contains the required measurement cell ID, when the user receives the channel information measurement set, it needs to perform channel measurement on the CSI-RS of all the cells in the measurement set. If there is interference from data of neighboring cells on the CSI-RS, it will seriously affect the channel measurement of the CSI-RS.

[0068]...

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Abstract

The embodiment of the invention discloses a method, a system and a device for transmitting data. The method comprises the following steps that: network side equipment can determine a channel information measurement set of UE (User Equipment) and obtain symbol positions corresponding to CSI-RS of cells in the channel information measurement set; the network side equipment performs slotting for data resource particles REs of symbol positions corresponding to CSI-RSs of other cooperative cells, except a serving cell of the UE, in the channel information measurement set; and the network side equipment obtains REs used by data to be received by the UE in a resource block RB according to the slotted REs, and transmits data to the UE according to the REs used by the data to be received by the UE. In the embodiment of the invention, by slotting the data REs corresponding to the CSI-RS pilot frequency symbols in the channel information measurement set, the interference of data symbols of adjacent cells in the channel information measurement set on CSI-RS pilot frequency symbols is effectively reduced or avoided, thereby improving the transmission performance of down links.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, system and equipment. Background technique [0002] LTE (Long Term Evolution, long-term evolution) is the evolution of 3G (3rd Generation, third-generation mobile communication system), LTE improves and enhances 3G air access technology, adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) Use) and MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) as standards for wireless network evolution. In the LTE-A (LTE-Advanced, LTE-Advanced) system, the OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) access method is adopted, so that the information of the users in the cell is carried in different orthogonal channels. on subcarriers, thereby avoiding multiple access interference among users. [0003] However, the OFDMA access...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/00H04L1/00
Inventor 王启星刘建军徐晓东史志华刘光毅
Owner CHINA MOBILE COMM GRP CO LTD
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