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LTE-A control channel deresource mapping method

A 1. LTE-A, resource mapping technology, applied in the field of LTE-A control channel de-resource mapping, can solve the problems of complex calculation, slow running speed and high resource consumption

Active Publication Date: 2020-10-20
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a method for deresource mapping of LTE-A control channel, by utilizing the FIR filter to carry out integer multiple data extraction of the system bandwidth, the bandwidth is normalized to 1.4M, to reduce the resolution The resource consumption of resource mapping solves the problems of complex calculation, slow running speed and high resource consumption caused by large amount of data under high bandwidth

Method used

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Embodiment Construction

[0065] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0066] The present invention first designs FIR filter coefficients and saves them to a file; then calls 5 FIR filters to design 2 times, 4 times, 8 times, 12 times and 16 times data extraction respectively, and normalizes the bandwidth to 1.4 MHz bandwidth.

[0067] The present invention proposes a resource index generation module, in which the resource mapping table of the first three OFDM symbols is established according to the time-frequency resource grid received by the receiving end antenna, and the channel and the unique position of the signal are determined according to the resource mapping table.

[0068] In the resource index module, there are three small modules: PCFICH resource index generation module, PHICH resource index generation module, and PDCCH resource index generation module. When the resource mapping is solved, the res...

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Abstract

The invention relates to an LTE-A (LTE-Advanced) control channel resource demapping method and belongs to the technical field of communication. According to the method, data extraction of integral multiples is carried out on system bandwidths through utilization of FIR (Finite Impulse Response) filters and the bandwidths are normalized into 1.4M, so resource consumption for resource demapping is reduced, and the problem that the computing quantity is complex, the operation speed is slow and the source consumption is high due to high data quantity under high bandwidths is solved. According to the method, through decoding of PBCHs (Physical Broadcast Channels), the system bandwidths are acquired, all system bandwidths are normalized, the computing quantity of a terminal is reduced, the memory consumption is reduced, and the operation speed of the terminal is improved.

Description

Technical field [0001] The invention belongs to the field of communication technology, and relates to a method for LTE-A control channel demapping. Background technique [0002] As we all know, the exponential growth of mobile Internet services in the past few decades stems from the public's internal demand for personalized and convenient information interaction all the time. However, outdated technical architecture, limited bandwidth and system capacity have clearly hindered the development and popularization of mobile Internet applications. Facing the challenges brought by diversified data services, the speed of traditional mobile communication technology is far from being able to meet the needs of users. In order to meet users’ high-quality requirements for mobile communications, traditional mobile communication technologies have evolved from the first generation of mobile communications. The fourth-generation mobile communication technology has developed to the present, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/0007H04L5/0025H04L5/0048H04L5/0053
Inventor 王美乐席兵张治中张雅静袁园
Owner CHONGQING UNIV OF POSTS & TELECOMM
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