Method for quickly obtaining migration of system time in wideband code division multiple access (WCDMA) communication system

Abstract

The invention relates to a method for quickly obtaining the migration of system time in a wideband code division multiple access (WCDMA) communication system, which comprises the following steps: determining the information of a frequency band supported by a mobile device; generating a frequency-group fundamental frequency list covering the full frequency band; determining target cells participating in a cell selection process according to the frequency-group fundamental frequency list; and carrying out the cell selection process. By using the method, the time for measuring the full frequencyband from the beginning to the end is greatly reduced, and in the process of measuring, after the measurement on each frequency-group fundamental frequency has no result, the frequency-group fundamental frequency is measured again, thereby ensuring that the mobile device can detect the changes of signal strengths of tried frequency points timely, and then positioning the target cells more accurately. The method in the invention has the advantages of fast and convenient realizing process, energy conservation, consumption reduction, high success rate and wide application scope, and is simple tooperate, and provides a solid foundation for the further development of the modern mobile communication technology.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the technical field of mobile device cell selection in a wireless communication system, and specifically refers to a method for realizing fast acquisition of system time offset in a WCDMA communication system. Background technique [0002] At present, the wireless communication system mainly includes two forms of GSM and CDMA. Currently running in the GSM system, a dual-band solution of 900M and 1800M is usually used. For the CDMA system, the International Telecommunication Union (ITU) has formulated multiple frequency bands available for the CDMA system. Although only frequency band 0 is used in China due to the traffic volume, as the number of users continues to increase, in the CDMA system Using only one frequency band in the network cannot meet the needs of users, and the resources of the cell will inevitably become more and more tense. Therefore, like the GSM s...

AI Technical Summary

Problems solved by technology

According to the main scrambling code list, when obtaining the time offset (SFO) between the mobile device and UTRAN, it is possible that the time offset of the main scrambling code already exists, and it is also possible that the time offset corresponding to the main scrambling code cannot be obtained within a certain period of time. Time Offset (SFO)

If the main scrambling code continues to try to obtain the time offset (SFO), it will reduce system efficiency, increase power consumption, and reduce performance

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