A dual-mode dual-standby terminal fast cell reselection method and the terminal

Abstract

The invention discloses a fast cell reselection method for a dual-mode dual-standby terminal and the terminal. When the dual-mode dual-standby terminal moves to a weak signal field of a first mode, it triggers the cell reselection under the first mode, and simultaneously requests the first mode of cell reselection. The second standard performs measurement assistance; the second standard uses the radio frequency idle time to perform measurement evaluation, and notifies the first standard of the measurement result. The invention makes full use of the performance advantages of the two radio frequency chips, and coordinates and complements the recommended cells in the dual systems, thereby realizing accelerated residency.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a fast cell reselection method for a dual-mode dual-standby terminal and the terminal. Background technique [0002] At present, there are many modes of mobile communication systems, including the second generation mobile communication system technology (2G) represented by technologies such as GSM / GPRS / EDGE / CDMA, and the second generation mobile communication system technology (2G) represented by technologies such as TD-SCDMA / WCDMA / CDMA2000. Three generations of mobile communication system technology (3G). In comparison, the third-generation mobile communication system technology has the advantages of advanced technology, strong data service capabilities, and large user capacity, but its shortcomings are also obvious, such as incomplete network coverage and relatively high tariffs; on the other hand, the second-generation Although the mobile communication system tec...

AI Technical Summary

Problems solved by technology

[0004] 1. GSM single-card single-mode single-standby, that is, insert a SIM (Subscriber Identity Module, Subscriber Identity Module) card through the GSM single-mode terminal, only reside in the GSM network and receive related network services; its limitation is that users only Can use simple GPRS (General Packet Radio Service, General Packet Radio Service) data services, but cannot enjoy high-speed data services

[0005] 2. TD-SCDMA / GSM single-card dual-mode single-standby, that is, insert a USIM (Universal Subscriber Identity Module, Universal Subscriber Identity Module) card through the TD-SCDMA / GSM dual-mode terminal, select a better signal to reside in the network, accept Relevant network services; its limitation is that UE (User Equipment, user equipment / terminal) may continuously evaluate the measurement results due to differences in network coverage and perform cell reselection between standards, resulting in call drop and power consumption problems

[0006] 3. TD-SCDMA / GSM dual-card dual-mode dual-standby, that is, by inserting a SIM card and a USIM card in the TD-SCDMA / GSM dual-mode terminal, each card corresponds to a set of independent radio frequency circuits, respectively Stay under 3G and 2G networks; the limitation is that users need to apply for two cards and have two numbers, which affects user experience and is very inconvenient to use

Although dual-mode and dual-standby mobile phones can meet the simultaneous standby requirements through two independent RF chips, how to use the neighbor cell configuration information broadcast in the network side system information; and, in weak signal scenarios, TD network Or how to deal with the dual-mode dual-standby mobile terminal during the cell reselection action of the GSM network, so as to speed up the residency and other issues, there is no relatively mature solution at present

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