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Multi-antenna sending method and device for measuring reference signal

A technology for measuring reference signals and sending methods, applied in the field of communication, can solve the problem that resources are not given implementation methods, and achieve the effect of improving efficiency and performance

Active Publication Date: 2009-09-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to obtain orthogonal resources has not given a description of the specific implementation in the existing schemes

Method used

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  • Multi-antenna sending method and device for measuring reference signal
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  • Multi-antenna sending method and device for measuring reference signal

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Embodiment Construction

[0069] The present invention aims to propose a scheme for transmitting uplink SRS under the condition of multiple antennas. Therefore, it is necessary to consider how to allocate specific resources on multiple antennas and whether precoding is required. In the present invention, when the uplink SRS is transmitted by precoding in the FDM mode, the uplink SRS is coded by using different precoding matrices, and orthogonal resources are allocated to the uplink SRS using different precoding matrices, and each antenna transmits the data on the orthogonal resources. Uplink SRS coded by different precoding matrices, so that the uplink SRS coded by different precoding matrices are transmitted on orthogonal resources; when precoding is not used to transmit uplink SRS, CDM, or TDM, or FDM, or any of the above In a combined manner, orthogonal resources are allocated to different antennas, and each antenna transmits uplink SRS on the orthogonal resources.

[0070] The following first describes...

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PUM

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Abstract

The invention discloses a multi-antenna sending method and a device for measuring reference signal. In the proposal of the invention, in the condition of using precoding to send uplink SRS, UE can provide orthogonal resources for different precoding matrices by CDM, or TDM, FDM, or in mutual combination manner; in the condition of not using precoding to send uplink SRD, UE can send SRS on orthogonal resources by CDM, or TDM, or FDM, or in mutual combination manner. The invention provides operable realization mode for sending uplink SRS in multi-antenna condition.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a method and device for transmitting a measurement reference signal (SRS, Sounding Reference Signal) with multiple antennas. Background technique [0002] SRS is a signal used between a terminal equipment (UE, User Equipment) and a base station (eNB, e-Node-B) to measure radio channel information (CSI, Channel State Information). In the Long Term Evolution (LTE, Long Term Evolution) system, the UE periodically sends uplink SRS according to parameters such as bandwidth, frequency domain position, period, and subframe offset indicated by the eNB. The eNB judges the uplink CSI of the UE according to the received SRS, and performs operations such as frequency domain selection scheduling and closed-loop power control according to the obtained CSI. [0003] In the LTE system, the SRS sequence sent by the UE is based on a root sequence r u，v (n) It is obtained by cyclic shift α in the t...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04L1/06H04J11/00
CPCH04B7/06H04L5/0023H04L5/0048H04B7/0684H04L5/0026H04L5/0051H04L25/0226H04L27/2613H04L5/0094
Inventor 张戎郝鹏王瑜新朱鹏张禹强
Owner ZTE CORP
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