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Frequency Division Multiple Antenna Assignment

A technology of antenna elements and antenna arrays, applied in diversity/multi-antenna systems, pilot signal distribution, antennas, etc., can solve problems such as estimation impossibility

Active Publication Date: 2020-12-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The use of MIMO technology in LTE raises the question of how to distribute the CRS power over multiple antenna elements in order to fully utilize the power amplifier resources available in the eNB
In addition, since CRS is broadcast on a large number of antennas, UE channel estimation for multiple transmit antennas using CRS is not possible

Method used

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  • Frequency Division Multiple Antenna Assignment
  • Frequency Division Multiple Antenna Assignment
  • Frequency Division Multiple Antenna Assignment

Examples

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Embodiment Construction

[0038]In the LTE standard, the cell-specific reference signal (CRS) is defined as all downlinks (ie, eNB to UE) subframes from the cells that are transmitted from the Physical Downlink Shared Channel, PDSCH. send. CRS can be used for cell search and initial capture, coherent demodulation / detection of the UE, and downlink channel quality measurements. Traditionally, CRS is transmitted on one or more of the antenna ports 0 to 3, wherein each antenna port has a unique CRS associated with it. Each antenna port typically drives a Transmit Receive Unit (TXRU) that drives a set of antenna elements to produce a wide bundle to provide uniform coverage on a large portion of the cell coverage. This exists in a large-scale MIMO system because a large number of TXRUs (much larger than the number of CRS ports) are used in a large-scale MIMO system to drive a large number of antenna array elements in an array. The challenge is to generate a wide bank beam in a large number of TRXUs and minimiz...

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PUM

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Abstract

Frequency-division multiple-antenna allocation involves dividing a carrier signal among multiple frequencies to produce multiple sub-carrier signals. Each of said subcarrier signals is at a different frequency. Each subcarrier signal is transmitted from a different antenna element of the subarray of antenna elements to generate a subarray transmission pattern of subcarrier signals. For different subcarriers, the subarray transmission pattern is shifted through multiple subarrays of the antenna array.

Description

[0001] Cross-reference related application [0002] This application claims January 5, 2017, filed Application Serial No. 15 / 399,323, entitled priority "frequency division multiple antenna distribution" of U.S. non-provisional application, the application is requested December 22, 2016 of application Serial No. 62 / 438,238, entitled priority "frequency division multiple antenna distribution" U.S. provisional Patent application, the contents of the two patent applications herein are incorporated herein by reference as if reproduced in their entirety. Technical field [0003] The present disclosure relates to MIMO (multiple input multiple output, MIMO) antenna systems, in particular MIMO systems involving large-scale frequency division multiple antenna distribution. Background technique [0004] In the LTE (Long Term Evolution, LTE) system evolved Node B (evolved Node B, eNB) can use the cell-specific reference signal (cell specific reference signal, CRS) to enable a user equipme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413
CPCH04L5/005H04L5/0057H04L5/0023H04L27/2602H04W52/42H04B7/0408H04B7/0426H04B7/0626H04L27/26H04W72/23H01Q21/00H04B7/12
Inventor 马正翔
Owner HUAWEI TECH CO LTD