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Method and device for realizing channel state information transmission in high-speed rail communication system

A channel state information and communication system technology, applied in the field of transmission method and device for channel state information in high-speed rail communication systems, can solve the problems of inability to perform frequency offset compensation, poor reception performance of LTE uplink control channels, and inability to use multiple user frequencies Partial calculation and other issues to achieve the effect of improving receiving performance

Inactive Publication Date: 2020-01-31
POTEVIO INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the LTE PUCCH (Physical Uplink Control CHannel, Physical Uplink Control Channel) is code-division multiplexed by multiple users, and the control information of multiple users is transmitted on the same RB (Resource Block, Resource Block), so the above-mentioned Method for Frequency Offset Estimation
[0004] Therefore, in the current frequency offset estimation algorithm, it is impossible to calculate the frequency offsets of multiple users in the LTE uplink control channel, and then it is impossible to perform frequency offset compensation, so that the receiving performance of the LTE uplink control channel cannot be improved when the terminal moves at a high speed. Deterioration, affecting user experience

Method used

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  • Method and device for realizing channel state information transmission in high-speed rail communication system
  • Method and device for realizing channel state information transmission in high-speed rail communication system
  • Method and device for realizing channel state information transmission in high-speed rail communication system

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Embodiment Construction

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0039] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof.

[0040] Those sk...

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Abstract

The present invention provides a method and device for transmission of channel state information in a high-speed railway communication system. The method comprises: receiving transmission data sent by UE, wherein the transmission data is data transmitted by using the resource corresponding to a PUCCH format 2 through the UE; performing channel estimation according to the pilot frequency data of the transmission data; and correcting the channel state of the transmission data according to the channel estimation result. The receiving performance of the channel state information when a terminal is located in the high-speed motion can be improved, and the user experience in the high-speed motion state can be effectively improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for realizing the transmission of channel state information in a high-speed rail communication system. Background technique [0002] In the communication system, the high-speed movement of the terminal will cause Doppler frequency shift. For example, if the terminal is traveling at a speed of 300km / h and the carrier frequency is 2.6GHz, the maximum Doppler frequency shift generated is about 722Hz. In the uplink, the Doppler frequency shift caused by the movement of the terminal will be at most twice the maximum Doppler frequency deviation, that is, the terminal is traveling at a speed of 300km / h, regardless of the downlink synchronization error condition Down, the uplink frequency deviation can reach up to 1444Hz. Under such frequency deviation conditions, if some measures are not taken, the uplink data cannot be received correctly. [0003] In existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00H04L25/02
Inventor 于小红
Owner POTEVIO INFORMATION TECH CO LTD
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