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Method for configuring wireless parameters and transmitting signals and device

A wireless parameter configuration and signal transmission technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of high system cost, unsuitable for wireless data transmission, large system overhead, etc., to reduce system overhead, The effect of improving throughput and improving scheduling efficiency

Inactive Publication Date: 2012-10-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a method and device for wireless parameter configuration and signal transmission, which are used to solve the application scenarios of indoor and hotspot coverage in existing protocols. Wireless data transmission suitable for this scenario leads to technical problems of high system cost and excessive system overhead

Method used

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  • Method for configuring wireless parameters and transmitting signals and device
  • Method for configuring wireless parameters and transmitting signals and device
  • Method for configuring wireless parameters and transmitting signals and device

Examples

Experimental program
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Embodiment 1

[0066] Figure 6 A flow chart of a method for wireless parameter configuration and signal transmission provided in this embodiment, the method includes:

[0067] Step 601, the sending station configures subcarrier spacing, sampling frequency and FFT points;

[0068] In this embodiment, the subcarrier spacing Δf of the sending station is set to the subcarrier spacing Δf of the LTE mobile communication system 1 Integer multiples of , preferably can be configured as n power times of 2, n is an integer greater than 0; the specific configuration can be as follows: when Δf 1 =15kHz, configure n=4, that is, the subcarrier spacing of the sending station is Δf=2 4 *15kHz = 240kHz.

[0069] Step 602, the sending station configures the number of available subcarriers;

[0070] In this embodiment, the sending station configures the number of available subcarriers in each OFDM symbol in a fixed configuration mode, a dynamic configuration mode or a semi-static configuration mode;

[00...

Embodiment 2

[0073] The flow of a method for wireless parameter configuration and signal transmission provided in this embodiment is as follows:

[0074] Step 601A, the sending station configures subcarrier spacing, sampling frequency and FFT points;

[0075] In this embodiment, the sampling frequency f of the sending station c It is configured as an integer multiple of the sampling frequency of the WCDMA mobile communication system, preferably configured as a multiple of the k power of 2, and k is an integer greater than 0; the specific configuration can be as follows: when the sampling frequency of the WCDMA mobile communication system is 3.84MHz, the configuration k= 3, then the sampling frequency f of the sending station c =3.84MHz*2 3 = 30.72 MHz.

[0076] Step 602A, the sending station configures the number of available subcarriers;

[0077] Preferably, the sending station configures the number of available subcarriers in each OFDM symbol in a fixed configuration mode, a dynamic ...

Embodiment 3

[0080] The flow of a method for wireless parameter configuration and signal transmission provided in this embodiment is as follows:

[0081] Step 601B, the sending station configures subcarrier spacing, sampling frequency and FFT points;

[0082] In this embodiment, the subcarrier spacing Δf of the sending station is configured as the subcarrier spacing Δf of the LTE mobile communication system 1 of 2 4 times, Δf 1 =15kHz, the subcarrier spacing of the sending station is Δf=2 4 *15kHz = 240kHz.

[0083] In this embodiment, the sampling frequency f of the sending station c 2 configured as a WCDMA mobile communication system with a sampling frequency of 3.84MHz 3 times, that is, the sampling frequency f of the sending station c =3.84MHz*2 3 = 30.72 MHz.

[0084] Based on subcarrier spacing Δf and sampling frequency f c configuration, the number of FFT points N is configured to be greater than or equal to f c / Δf, and N is greater than or equal to f c The smallest inte...

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Abstract

The invention discloses a method for configuring wireless parameters and transmitting signals and a device so as to solve the problem that a system has excessively high cost and expense caused by the fact that wireless parameter selection and signal transmitting methods are not suitable for wireless data transmission in application scenes of indoor areas and hot spot areas. According to the invention, a common LTE mobile communication system crystal oscillator principle is followed in subcarrier spacing selection. The subcarrier spacing is configured to be an integral multiple of LTE mobile communication system subcarrier spacing. Sampling frequency is an integral multiple of the LTE mobile communication system sampling frequency. FFT points are configured to be no less than the integer of a ratio of the sampling frequency to the subcarrier spacing. Therefore, FFT implementation cost is reduced, the system cost of covering the indoor areas and hot spots is greatly reduced, dispatching efficiency can be improved, the system expense is reduced, system throughput is improved and a demand of data traffic is met.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular to a method and device for wireless parameter configuration and signal transmission of LTE (Long Term Evolution, Long Term Evolution) indoor and hotspot coverage evolution. Background technique [0002] With the popularity of the mobile Internet (Mobile Internet) and smart phones, the demand for mobile data traffic is increasing rapidly. According to the prediction of authoritative organizations, in the next ten years (2011-2020), the mobile data business volume will double every year, and will increase by a thousand times in ten years. [0003] The proportion of data services in the operator's network is gradually increasing, which affects traditional carrier-class services. However, because data services are charged according to traffic, its profit growth rate is not directly proportional to traffic load. In addition, the rapid growth of data services poses severe cha...

Claims

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Application Information

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IPC IPC(8): H04W28/18H04L27/26
CPCH04W72/02H04W72/12H04W28/06H04W28/18
Inventor 方惠英郁光辉夏树强张峻峰郝鹏
Owner ZTE CORP
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