A frequency scanning device and method

Abstract

The invention discloses a sweep frequency device and a method. The sweep frequency device and the method are used for solving the problems of too much sweep frequency data and data redundancy to improve sweep frequency speed and processing efficiency of the sweep frequency data. The sweep frequency device comprises a radio frequency processing module, a screening module and a signal processing module. The radio frequency processing module is used for receiving wireless radio-frequency signals of each frequency point according to a configured frequency point list, and converting the received wireless radio-frequency signals to base band digital carrier signals and then outputting the base band digital carrier signals. The screening signals is used for measuring signal strength of each received base band digital carrier signal, and screening out a set number of base band digital carrier signals with the highest signal strength and storing the base band digital carrier signals in a storage module. The signal processing module is used for conducting corresponding signal processing on the base band digital carrier signal stored in the storage module according to a configured sweep frequency parameter, and reporting obtained sweep frequency data to a data collecting system through a port module.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a frequency scanning device and method. Background technique [0002] The frequency scanner is an instrument used to test the wireless network coverage of a specific network standard. The application scenarios mainly include wireless network optimization, road testing, base station survey, base station testing, repeater testing, and wireless propagation model calibration. [0003] In the following, a GSM (Global System for Mobile Communication, Global System for Mobile Communication) network standard frequency scanner (GSM frequency scanner for short) is taken as an example for illustration. Existing GSM frequency scanners use a polling-based frequency scanning method. The so-called polling method means that the GSM frequency scanner performs search, synchronization, measurement, decoding and other processes one by one according to the configured frequency point list. Wheth...

AI Technical Summary

Problems solved by technology

[0004] For the GSM frequency scanner, if the configured frequency points are 200, the scanning parameters include at least ARFCN (Absolute Radio Frequency Channel Number, absolute radio frequency channel number), RSSI (Received Signal Strength Indicator, received signal strength indicator), BSIC (Base Station Identity Code, base station identification code) and C / I (Carrier to Interference radio, carrier-to-interference ratio), the frequency sweep data of a sampling point includes at least 800 columns of data, and the saved file generated thereby has a large amount of data, which will Consumes a large amount of storage space for storing a large amount of frequency sweep data

At the same time, since many frequency points are not used by the BCCH carrier, the BSIC and C / I parameter values ​​​​of most frequency points are empty, so that there is a data redundancy problem in the frequency sweep data

Excessive scanning data and data redundancy also lead to high complexity and slow processing efficiency in subsequent analysis systems such as retrieval and analysis

Moreover, in the actual GSM wireless network optimization, usually only focus on the TOP16 GSM wireless radio frequency signals, that is, the strongest 16 cell signals, while the search, synchronization, measurement, decoding and other processing of other weaker signals are very important for the actual GSM wireless Network optimization is of little significance, so for the GSM frequency scanner responsible for data collection, the polling frequency scanning method also wastes a lot of time for measuring frequency points that many users do not care about.

[0005] It can be seen that the existing GSM frequency scanners have problems of excessive frequency scanning data and data redundancy, resulting in slow frequency scanning speed and low processing efficiency of frequency scanning data

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