Method for accelerating network selection process of multimode user equipment

Abstract

The invention provides a method for accelerating a network selection process of multimode user equipment. The method comprises the steps that UE resides in a cell successfully; when receiving a message containing a complete neighbor cell list, an AS resolves neighbor cell information of modes in all modes supported by the UE according to the modes supported by the UE and a network (in general, the network supports all modes of the UE), and reports the neighbor cell information to an NAS, as the neighbor cell list of the modes for follow-up network selection, to reduce the possibility that the UE initiates a blind search cell selection process to the greatest extent; and moreover, during a residing period, according to the newest neighbor cell measurement information (mainly different-mode neighbor measurement results of a current residing mode), the AS reports the measured specific neighbor cell list information to the NAS, and timely updates the neighbor cell lists of the corresponding modes. The UE is enabled to reduce blind detection for frequency points to the greatest extent, the network selection process of the multimode UE is accelerated effectively, the network selection time delay is shortened, the power consumption of the UE is reduced, and the user experience is improved.

Description

Technical field [0001] The invention relates to a method for accelerating the network selection process of a multi-mode user terminal (referred to as UE) in a mobile communication system, effectively shortening the network selection delay, and allowing the UE to camp on a suitable network as soon as possible. Background technique [0002] In mobile communication systems, with the continuous development and evolution of technology, it is an indisputable fact that multiple wireless access technologies (or modes) coexist for a long time, and smart user terminals supporting multiple modes have been widely used and popularized. Different access technologies (modes) have their own advantages. In order to meet the various business needs of users and provide users with fast and stable services anytime and anywhere as much as possible, multi-mode user terminals are required to quickly and accurately stay on the signal quality A good network responds to user requirements in a timely manner...

AI Technical Summary

Problems solved by technology

These neighbor lists are used as storage lists during the network selection process. Blind detection of these frequency points will also increase network selection delay and power consumption.

[0018] At the same time, in step 6, the AS only analyzes and reports the information of neighboring cells in the current user mode, and most of these neighboring cells only configure frequency points (except for the current camping mode). If the subsequent user modifies the user mode, especially adding support mode scenario (usually the network supports all modes of the UE), for example, the original user mode is 2G / 3G, the newly set user mode is 2G / 3G / 4G and the 4G mode is the highest priority, according to the existing technology, execute 4G under a certain PLMN In the network selection mode, the 4G neighbor list is not saved, and the cell selection process of blind search can only be directly performed, and the network selection delay and power consumption are very large.

In addition, if you perform network selection in 3G mode, if you were staying in 2G or 4G mode before and only saved the frequency points of 3G neighboring cells, you must perform blind detection on these frequency points in 3G mode, and the network selection delay has increased

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