Method for increasing multiple mode terminal searching public land mobile net speed

Abstract

Present invention discloses a method for raising multiple mold terminals searching public land mobile network speed. It contains setting UTRAN wireless accessing technology type expressed by at least one preserving bit value in PLMN accessing technology identifier, when multiple mold terminal making PLMN searching, if determining selecting UTRAN wireless accessing technology then judging specific accessing technology type according to said preserving bit value, according to judgement result searching PLMN in said specific accessing technology corresponding frequency range by said determined specific accessing technology. Said invention can shorten terminal searching network average time, raising multiple mold terminal user satisfaction and systematical paging success ratio.

Description

technical field [0001] The invention relates to a terminal wireless network access technology, in particular to a method for increasing the speed of a multi-mode terminal searching for a public land mobile network. Background technique [0002] According to the provisions of the 3rd Generation Partnership Project (3GPP, The 3rd Generation Partnership Project) Technical Specification (TS) 31.102, the Universal Mobile Telecommunications System (UMTS) Universal Subscriber Identity Module (USIM, Universal Subscriber Identity Module) card of the network terminal has Several files such as: the basic file EF that stores the information list of the PLMN controlled by the user and its wireless access technology in the USIM card PLMNwACT , The basic file EF that stores the operator-controlled public land mobile network (OPLMN) and its wireless access technology related information list in the USIM card OPLMNwACT , the basic file EF that saves the information list of HPLMN and its wir...

AI Technical Summary

Problems solved by technology

The TD-SCDMA / WCDMA multi-mode terminal designed according to the existing specifications, because the USIM card file only indicates that the PLMN adopts UTRAN access technology, during the power-on process or during the periodical HPLMN or higher priority PLMN search process, when When the search wireless access technology is identified as UTRAN, it is impossible to clearly determine whether to use WCDMA access technology or TD-SCDMA access technology to search for the PLMN, so only WCDMA access technology and TD-SCDMA access technology can be used to search for frequency division Duplex (FDD) and time-division duplex (TDD) frequency bands to search for the PLMN, the average time for multi-mode terminals to search for PLMNs will be extended a lot, and the average time for multi-mode terminals from powering on to obtaining services will be extended, thereby reducing user Satisfaction with its performance may lead to the extension of the periodical HPLMN or higher priority PLMN search time of this multi-mode terminal in the roaming state. During the PLMN search process, the terminal cannot listen to the paging message, so that the paging of the system Reduced call success rate

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