Data transmission device, method and system

A technology for terminal equipment and downlink data, applied in the field of communication, can solve the problems of limited Doppler frequency offset, inability to better improve UE downlink average throughput, large error, etc.

Inactive Publication Date: 2020-01-31
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, in the high-speed rail mobile communication network, due to the high moving speed of the UE, the error between the Doppler frequency offset estimated by the UE according to the CRS and the Doppler frequency offset actually existing in the network will be greater, and due to The moving speed of the UE is high, the Doppler frequency offset actually existing in the network will be higher, and the Doppler frequency offset estimated by the UE will be higher, but the maximum Doppler frequency offset that the UE can compensate is limited. In this way, It will lead to unsatisfactory demodulation performance of DMRS and data, resulting in the inability to improve the average downlink throughput of UE

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  • Data transmission device, method and system
  • Data transmission device, method and system
  • Data transmission device, method and system

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Embodiment Construction

[0092] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0093] Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual objects...

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Abstract

The invention discloses a data transmission device, method and system, and relates to the field of communications, and aim to better improve the downlink average throughput of a UE. According to the specific scheme, the method comprises: a determining unit determining downlink frequency offset according to a received uplink signal sent by terminal device, and determining second transmitting frequency according to the downlink frequency offset and first transmitting frequency; the transmitting unit transmitting a downlink signal to the terminal device based on the second transmitting frequencydetermined by the determining unit, so that the terminal device receives the downlink signal based on a receiving frequency corresponding to the first transmitting frequency; wherein the downlink signal at least comprises one of DMRS and downlink data. The method is used in the data transmission process.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission device, method and system. Background technique [0002] With the rapid development of high-speed rail, people often choose to take convenient transportation such as high-speed rail when traveling, and with the wide application of user terminals (English: User Equipment, UE for short), when people take high-speed rail, The demand for data services in the high-speed rail mobile communication network is increasing day by day. Therefore, how to improve the throughput of the UE in the high-speed rail mobile communication network is a problem that operators are more concerned about. [0003] During the high-speed movement of the UE, the high-speed rail mobile communication network will experience Doppler frequency shift. In this way, it is very likely that the UE cannot correctly demodulate the data sent by the base station, resulting in a low average downlink thr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W72/04H04W72/12
CPCH04L27/2657H04L27/2675H04L27/0014H04W56/0035H04B1/707B63B2201/16H01Q1/3216H04W84/005
Inventor 戴喜增李启明韩静李安俭林凡奎
Owner HUAWEI TECH CO LTD
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