Method and apparatus for processing component carriers to be aggregated for transmission

A component carrier and equipment technology, applied in the CM/PAPR field, can solve the problems of backward compatibility, the overall increase of CM/PAPR, and the inability to solve the problem of CM/PAPR increase.

Active Publication Date: 2016-04-06
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these schemes may need to design asymmetric CC aggregation, or may cause backward compatibility issues, and cannot solve the problem of CM / PAPR increase caused by aggregated CCs.
[0006] In short, there is no existing technical solution that can solve the problem of overall increase in CM / PAPR caused by both repeated RSs and aggregated CCs

Method used

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  • Method and apparatus for processing component carriers to be aggregated for transmission
  • Method and apparatus for processing component carriers to be aggregated for transmission
  • Method and apparatus for processing component carriers to be aggregated for transmission

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Embodiment Construction

[0028] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. In the following description, some specific embodiments are only used for descriptive purposes, and should not be construed as limiting the present invention, but are merely examples of the present invention.

[0029] First reference figure 1 , Which shows a flowchart of a method for processing multiple component carriers CC to be aggregated and transmitted according to an embodiment of the present invention. Such as figure 1 As shown, the method starts in step S101. In step S102, a time domain signal of each of the multiple component carriers CC is obtained. In step S103, a plurality of fixed phase rotations are respectively applied to the acquired time-domain signals by using the phase rotation values ​​in the phase rotation set to obtain multiple phase rotation versions of each CC. Then, the method proceeds to step S104, in which one of the multiple phase-...

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Abstract

The invention discloses a method for processing a plurality of component carriers CC to be aggregated and transmitted, the method comprising the steps of: acquiring a time-domain signal of each of the plurality of component carriers CC; The rotation value applies multiple fixed phase rotations to the acquired time-domain signals to obtain multiple phase-rotated versions of each CC; arbitrarily selects one of the multiple phase-rotated versions of each CC to form multiple candidate transmission groups , and obtain the magnitude sum of the phase-rotated versions in each of the multiple candidate transmission groups; determine the candidate transmission group with the smallest magnitude sum; and transmit the multiple phase-rotated versions in the candidate transmission group with the determined minimum magnitude sum . The present invention essentially provides a general solution capable of minimizing CM/PAPR of aggregated component carriers in UL and DL.

Description

Technical field [0001] The present invention relates to the field of communications, and more specifically to a method and device for processing component carriers to be aggregated and transmitted in an LTE-A system to reduce CM / PAPR of aggregated component carriers of uplink and downlink. Background technique [0002] As the 3G industry gradually enters a climax in the world, the Long Term Evolution (LTE), which shoulders the mission of 3G to 4G evolution, has attracted the attention of the industry. As the evolution of LET, Long Term Evolution-Advanced (LET-A) is mainly due to its ability to provide low-cost facilities and terminals, improve power efficiency, reduce relay transmission costs, and reduce terminal complexity. More and more attention. [0003] In the LTE-A system, the increase of the CubicMetric (CM) related to the aggregation of Component Carriers (CC) is mainly caused by the following two factors: Repeated Downlink (Downlink, CC) on CC DL) Reference Signal (RS) p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/00
CPCH04L5/0007H04L5/001H04L27/2607H04L27/2614
Inventor 杨林刘瑾张晓博
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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