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Method and system of improving LAA uplink transmission performance

A technology of transmission performance and transmission resources, applied in the field of improving LAA uplink transmission performance, can solve problems such as waste of terminal transmit power, inability to transmit uplink channels, and decline in uplink transmission efficiency, achieving low overhead, improving reliability, efficiency, and complexity low effect

Active Publication Date: 2017-05-10
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the suddenness and uncertainty of interference in the unlicensed frequency band, users may not be able to transmit on the uplink channel of the unlicensed carrier at the moment of uplink transmission, resulting in waste of uplink transmission power of the terminal and a decrease in uplink transmission efficiency

Method used

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  • Method and system of improving LAA uplink transmission performance
  • Method and system of improving LAA uplink transmission performance
  • Method and system of improving LAA uplink transmission performance

Examples

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Embodiment Construction

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0046] At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships.

[0047] The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

[0048] The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part o...

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Abstract

The invention discloses a method and a system of improving LAA uplink transmission performance. The method comprises steps that during uplink transmission of a user terminal, an uplink scheduling request and a cache state report are transmitted to a base station; according to the cache state report of the user terminal, current load conditions of all of carriers, and an unlicensed carrier interference condition, the base station is used to select corresponding unlicensed carriers, and is used to transmit an uplink scheduling licensed UL grant message to the user terminal; after the UL grant message is received by the user terminal, channel clear assessment is carried out on the unlicensed carriers, and when the unlicensed carrier channels are clear and available, the indicated physical uplink sharing channel PUSCH transmission power of the unlicensed carriers is calculated by using power adjusting information, and by using the adjusted PUSCH transmission power, the uplink transmission of the uplink transmission resource of the unlicensed carriers indicated by the UL grant is carried out. The reliability and the efficiency of the LAA uplink transmission are improved.

Description

Technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for improving the uplink transmission performance of LAA. Background technique [0002] With the rapid development of the mobile Internet and the widespread popularity of smart terminals, the surge in data traffic has doubled the pressure on the existing network capacity. In order to solve the problem of mobile network capacity, on the one hand, it is necessary to improve the utilization rate of the existing spectrum through technological innovation, and on the other hand, it is necessary to seek more spectrum resources. [0003] At present, the License Assisted Access (LAA) technology that 3GPP is focusing on in Release 13 is one of the key technologies for using unlicensed spectrum to solve the problem of LTE network expansion. With the assistance of licensed spectrum, LTE can be deployed in unlicensed frequency bands through carrier aggregation, making...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/52H04W72/21
Inventor 鲁娜谢伟良杨峰义毕奇
Owner CHINA TELECOM CORP LTD
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