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Multi-antenna transmission method and device

A multi-antenna transmission, antenna port technology, applied in the field of communication, can solve the problems of inability to effectively eliminate interference, system throughput drop, unbalanced channel matrix, etc.

Active Publication Date: 2013-02-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the UE receives signals transmitted by each geographically separated TP, and the power received from each TP is different. The precoding matrix obtained according to the prior art is not suitable for a channel matrix with unbalanced power, and cannot effectively eliminate or suppress interference. As a result, the throughput of the system decreases

Method used

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  • Multi-antenna transmission method and device

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Embodiment 1

[0036] An embodiment of the present invention provides a multi-antenna transmission method, such as figure 1 As shown, the method includes:

[0037] Step 101, the user equipment UE receives the reference signal RS configuration set sent by the evolved base station eNB, and obtains the channel state information CSI corresponding to each RS configuration in the RS configuration set based on the RS configuration set, and the RS configuration set includes at least Two RS configurations;

[0038] Step 102, the UE sends the CSI set to the eNB, wherein the CSI set includes channel state information CSI corresponding to each RS configuration in the RS configuration set;

[0039] Step 103, the UE receives the signal sent by the eNB according to the CSI set and performs data processing.

[0040] The subject of execution of the method is UE (User Equipment, user equipment), wherein the UE includes a user terminal, a mobile station, a relay (Relay) for receiving downlink data, and the l...

Embodiment 2

[0057] An embodiment of the present invention provides a multi-antenna transmission method, such as Figure 5 As shown, the method includes:

[0058] Step 501, the eNB sends the RS configuration set to the UE, so that the UE obtains the channel state information CSI corresponding to each RS configuration in the RS configuration set according to the received RS configuration set, and the RS configuration set includes at least two RS configuration;

[0059] The RS (Reference Signal, reference signal) configuration set may include RS configurations with the same cell ID, and adopt the RS configuration with the same cell ID, so that scheduling can be performed by one scheduler, which is convenient for scheduling and management.

[0060] The resources occupied by the RS configurations with the same cell identity are orthogonal to each other. The resources occupied by the RS configurations with the same cell identity are orthogonal to each other include:

[0061] The RS configura...

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PUM

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Abstract

The invention discloses a multi-antenna transmission method and a multi-antenna transmission device, and relates to the technical field of communication. Interference can be reduced, and the throughput of a system can be improved. According to the scheme, the method comprises the following steps of: receiving a reference signal (RS) configuration set from an evolved NodeB (eNB), acquiring a channel state indicator (CSI) corresponding to each RS configuration in the RS configuration set on the basis of the RS configuration set, transmitting a CSI set to the eNB, receiving a signal transmitted according to the CSI set from the eNB, and performing data processing. The scheme is suitable for multi-antenna signal transmission.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for multi-antenna transmission. Background technique [0002] At present, in geographically separated distributed antenna systems, low-power RRHs (Remote Radio Heads, remote radio heads) are scattered within the coverage of macro cells, wherein each RRH communicates with an eNB (Evolved Node B, Evolved base station) is connected, and the macro base station is directly connected to the eNB. The RRH or the macro base station sends data to the UE (User Equipment, user equipment) through its respective TP (Transmission Point, transmission point / transmission point). In the existing CoMP (Coordinated Multi-Point operation, coordinated multi-point transmission) system, it can Send data to UE through multiple TPs. [0003] It is described now that two TPs jointly send data to the UE: the eNB notifies the UE of two CSI RS (Channel State Information Ref...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04B7/06H04B7/08
CPCH04L5/0032H04B7/0632H04L1/0001H04L5/0035H04B7/0626H04B7/024H04B7/0639H04B7/063H04L1/0026H04L1/0073
Inventor 王建国周永行
Owner HUAWEI TECH CO LTD
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