Double module terminal and method for obtaining timing base relationship

Abstract

The invention discloses a double-mode terminal and an acquisition method of time base relationship. The method comprises the steps: A. at the moment of a frame interrupt of a basis mode, a second register is used for latching a time base difference between the basis mode and a non-basis mode; at the moment of the frame interrupt of the non-basis mode, a first register is used for latching a time base difference of the second register; B. according to a frame number FN of the basis mode, a frame number SSFN of the non-basis mode, a first register latch value T1, a second register latch value T2, an adjustment quantity Delta of the frame interrupt of the basis mode and an ultimate latch delay D of two registers at the moment of sampling, the time base relationship between the basis mode andthe non-basis mode is determined. The invention lists out five corresponding relations of GSM frame and TDD-LCR frame one by one and provides a method for determining every corresponding relation, sothe time base relationship between the two modes can be positioned accurately and flexibly and GSM / TDD-LCR automatic double-mode is favored to be realized.

Description

Dual-mode terminal and method for acquiring time base relationship Technical field The present invention relates to the field of mobile communication, in particular to a dual-mode terminal and a method for acquiring time base relationship thereof. Background technique The second-generation mobile communication network GSM / GPRS and CDMA (2G) began to be used in the 1980s, and have grown to the present. The total number of mobile users worldwide has reached more than 1 billion. With the continuous increase of user demand for services, the existing second Modern mobile communication systems have been difficult to meet the requirements of high-speed data. At the same time, mobile communication technology has evolved from the existing second-generation to the third-generation mobile communication system (3G) based on WCDMA, TD-SCDMA and CDMA2000. The third-generation mobile communication system meets the service quality requirements of a large number of data services. , And improv...

AI Technical Summary

Problems solved by technology

The second-generation mobile communication network GSM / GPRS and CDMA (2G) began to be used in the 1980s. Up to now, the total number of mobile users in the world has reached more than 1 billion. With the continuous increase of users' demand for services, the existing second Modern mobile communication systems have been difficult to meet the requirements of high-speed data

At present, the third generation mobile communication network (3G) has received a lot of research and has commercial applications, but the existing second generation mobile communication system (2G) has been widely used in the world, so, in the long future For a period of time, the second-generation mobile communication system will coexist with the third-generation mobile communication network, so there will be areas where multiple communication systems overlap

Images