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Method and device for multi-antenna transmission

A multi-antenna transmission and antenna port technology, applied in the field of communication, can solve problems such as system throughput decline, unbalanced channel matrix, and inability to effectively eliminate interference

Active Publication Date: 2015-11-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • Method and device for multi-antenna transmission

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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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Abstract

The present invention relates to the field of communications technologies and provides a multi-antenna transmission method and apparatus, which can reduce interference and improve system throughput. In the solutions provided in embodiments of the present invention, a reference signal RS configuration set sent by an eNB is received, CSI corresponding to each RS configuration in the RS configuration set is acquired based on the RS configuration set, the CSI set is sent to the eNB, then a signal sent by the eNB according to the CSI set is received, and data processing is performed. The solutions provided in the embodiments of the present invention apply to 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 (RemoteRadioHead, remote radio head) are scattered within the coverage of macro cells, wherein each RRH communicates with eNB (EvolvedNodeB, evolved base station) through optical fiber connection, the macro base station is directly connected to the eNB. RRH or macro base station sends data to UE (User Equipment, user equipment) through their respective TP (TransmissionPoint, transmission point / transmission point). In the existing CoMP (CoordinatedMulti-Pointoperation, coordinated multi-point transmission) system, multiple TPs can Send data to UE. [0003] It is described now that two TPs jointly send data to the UE: the eNB notifies the UE of two CSIRS (ChannelStateInformationReferenceSignal, channel...

Claims

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Application Information

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