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Data sending and receiving method and device

A data sending method and a data flow technology, which are applied in the field of communication, can solve problems such as waste of time-frequency resources, and achieve the effect of improving utilization

Active Publication Date: 2020-09-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the same time-frequency resource can only be used by one UE, and other UEs cannot use the time-frequency resource, resulting in a waste of time-frequency resources

Method used

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  • Data sending and receiving method and device
  • Data sending and receiving method and device
  • Data sending and receiving method and device

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] The method of the embodiment of the present invention can be applied in a MIMO system, such as an LTE system or an LTE-A system, and the MIMO system can significantly improve the performance of a wireless communication system by deploying multiple antennas on the transmitting end device and the receiving end device. For example, in a d...

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Abstract

Embodiments of the present invention provide a method and device for sending and receiving data, including: a transmitting device precodes multiple spatial streams to obtain multiple precoded data streams, and transmits the multiple precoded data streams, wherein the At least two of the multiple spatial streams are obtained by performing transmit diversity processing on an original spatial stream. Since some of the multiple spatial streams on the same time-frequency resource can be transmitted using beamforming transmission based on transmit diversity, other spatial streams can be transmitted using space-division multiplexing, thereby improving the utilization of time-frequency resources .

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular, to a data sending and receiving method and device. Background technique [0002] Long Term Evolution (LTE for short) or Long Term Evolution-advanced (LTE-A for short) system adopts Multiple Input Multiple Output (MIMO for short) technology. Deploying multiple antennas on end devices can significantly improve the performance of wireless communication systems. For example, in a diversity scenario, MIMO technology can effectively improve transmission reliability; in a multiplexing scenario, MIMO technology can double the transmission throughput. [0003] In the diversity scenario, the base station usually uses the Open loop transmit diversity (OLTD) method to transmit data, and the OLTD can form cell-level transmit diversity coverage to provide reliable signals for User Equipment (UE) in the cell quality. However, the same time-frequency resource can only be u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06
CPCH04B7/0456H04L1/0625H04B7/0408H04B7/0667H04B7/068H04L5/0023H04L5/0051H04B7/0617H04L5/0048H04L5/0053
Inventor 吴晔刘永毕晓艳
Owner HUAWEI TECH CO LTD
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