Frequency sweeping method, frequency sweeping device, web searching method and web searching terminal for wireless communication system

A wireless communication system and frequency sweeping technology, applied in wireless communication, access restrictions, electrical components, etc., can solve the problems of frequent frequency switching, affecting network search efficiency, and short frequency sweeping steps, reducing the total frequency of sweeping. times, shortening the search time, and the effect of sweeping step size

Inactive Publication Date: 2012-09-12
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the prior art, when performing the above-mentioned network search process, since the frequency sweep operation is carried out in the time domain, the possible frequency point interval of the network is small, the frequency sweep step length is short, and the frequency point density is large. The number of frequency points is large, and the number of frequency points makes th

Method used

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  • Frequency sweeping method, frequency sweeping device, web searching method and web searching terminal for wireless communication system
  • Frequency sweeping method, frequency sweeping device, web searching method and web searching terminal for wireless communication system
  • Frequency sweeping method, frequency sweeping device, web searching method and web searching terminal for wireless communication system

Examples

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Embodiment 1

[0037] See attached figure 2 , which shows an embodiment of the invention comprising:

[0038] Step S201: Obtain candidate frequency points from the frequency sweep pattern;

[0039] The frequency scanning pattern is a set of candidate frequency points for frequency scanning, and the candidate frequency points in the set are within the lower frequency boundary of the frequency scanning range and the upper frequency boundary of the frequency scanning range. In the field of communication technology, a candidate frequency point can refer to a certain frequency point or represent a frequency segment. When representing a frequency segment, any frequency point within the frequency segment can be selected to represent the frequency segment for frequency scanning operation. Candidate frequency points can be generated according to a preset formula, and the generated candidate frequency points can be distributed equidistantly or unequally in the frequency sweep range according to a pr...

Embodiment 2

[0048] Embodiment 1 The frequency scanning operation is performed on the candidate frequency points as a whole, which can reduce the total number of candidate frequency points that need to be scanned, and reduce the frequency point switching times. However, when the candidate frequency point represents a candidate frequency band, it may not be possible to obtain accurate frequency sweep results by randomly selecting a frequency point for scanning. In order to avoid this situation, multiple sub-frequency points can be divided from the frequency band corresponding to the candidate frequency point , each sub-frequency point is scanned according to the method of the above-mentioned embodiment. Although this processing method increases the number of frequency scanning operations and frequency point switching times, it can take into account the accuracy and efficiency of the frequency scanning operation. When implementing the above frequency scanning process, multi-carrier technology...

Embodiment 3

[0062] In order to make the technical solution of the present invention clearer, a specific example is used below to illustrate. See attached Figure 4 And attached Figure 5 , Figure 4 For the flowchart of this example, Figure 5 This is the hardware structure diagram of this example. In this example, it is assumed that there are 2 antennas, each channel contains 4 subcarriers, and there are 8 independent receiving channels in total. The upper 4 channels are symmetrical to the lower 4 channels and perform the same function. This instance includes:

[0063] Step 401: Initialize the frequency sweep parameters, and set the frequency sweep count K to zero. Frequency sweep parameters are an important guarantee for realizing frequency sweep. Refer to Table 1 and Table 2. Frequency scanning parameters include initial frequency point, frequency scanning step size, frequency point list, etc. These parameters need to be initialized according to system parameters before frequency ...

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Abstract

An embodiment of the invention provides a frequency sweeping method for a wireless communication system. The frequency sweeping method for the wireless communication system includes: acquiring candidate frequency points from a frequency sweeping pattern; converting time-domain signals of the candidate frequency points into frequency-domain signals, wherein the interval among the candidate frequency points converted into the frequency domain is larger than that of the candidate frequency points in the time domain; performing energy calculation for the signals converted into the frequency domain so as to obtain frequency-domain energy windows; and selecting the frequency points with the frequency-domain energy windows larger than a preset threshold value and outputting the frequency points as frequency sweeping results. The embodiment of the invention further provides a frequency sweeping device for the wireless communication system, and further provides a web searching method and a web searching terminal for the wireless communication system based on the frequency sweeping method and the frequency sweeping device. By the aid of the methods and the devices in the embodiment, frequency sweeping times for the candidate frequency points and frequency point switching times are decreased, frequency sweeping time is shortened, and web searching efficiency of the wireless communication system is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a frequency scanning method and a corresponding device for a wireless communication system, a network searching method and a corresponding terminal. Background technique [0002] With the rapid development of information technology, the application range of wireless communication system is more and more extensive. Based on various applications of the wireless communication system, the terminal needs to search the network before using the resources provided by the wireless communication system. To realize the network search, a frequency scanning operation is required. The number of frequency points of the frequency, the less the number of frequency points, the higher the efficiency of the frequency scanning process, and the shorter the time spent on the entire network search process. See attached figure 1 , taking the mobile terminal accessing the wireless...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04W48/18
Inventor 刘宇周为民沈建海
Owner HUAWEI TECH CO LTD
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