Method for switching user equipment of long-term evolvement network between difference systems

Abstract

The invention relates to mobile communication technique, and discloses a switching method between dissimilar systems of user device in perennial evolution network, when the quality of wireless signal of target system and service system is lower than the threshold, UE can be switched to other system. In the invention, when UE needs to switch between dissimilar systems, if the quality of present service system and wireless signal of target system is lower than the threshold, UE will report the 3e event to the network, and monitored by network or positive to measures other system that UE can switch; if the measured quality of target system of wireless signal is higher than the threshold, the quality of present service system of wireless signal is lower than the threshold, UE will report the 3e event to the network, and the network will switch UE to target system.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to the handover technology between different systems in the long-term evolution network. Background technique [0002] Since the mobile communication technology entered the second generation of mobile communication (The Second Generation, "2G" for short) at the end of the 20th century, it has developed rapidly. For example, Global System for Mobile Communication (GSM for short), and Code Division Multiple Access (CDMA for short) technologies have been widely used. [0003] However, with the increase in the number of users and the continuous improvement of the requirements for business types and performance, 2G gradually shows limitations in data transmission capabilities. Therefore, the third generation of mobile communication (The Third Generation, referred to as "3G") with stronger data transmission capability has entered a stage of rapid development, and the field of mobile com...

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Problems solved by technology

[0013] 3b event: the wireless signal quality of another system is lower than a certain threshold;

[0019] In practical applications, the above solution has the following problems: when the wireless signal quality of the handover target system is lower than the threshold, the UE cannot be handed over to other handover systems supported by the UE

[0020] The main reason for this situation is that, according to the prior art, if there are multiple disparate systems adjacent to the LTE system, such as UMTS, E-GSM, Enhanced Data Rates for GSM Evolution (Enhanced Data Rates for GSM Evolution) , referred to as "EDGE") and other system cells, the network controls the UE to measure the LTE serving cell and the UMTS serving cell, then due to interference and other reasons, the signals of both the LTE and UMTS serving cells become weak, and the 3a event is not satisfied. According to the HHO mechanism, the UE handover fails. It cannot be switched to the available GSM / EDGE Radio Access Network (GSM / EDGE Radio Access Network, referred to as "GERAN") serving cell

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