CN101547499A - Method for searching initial cell of mobile terminal - Google Patents
Method for searching initial cell of mobile terminal Download PDFInfo
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- CN101547499A CN101547499A CN200810084158A CN200810084158A CN101547499A CN 101547499 A CN101547499 A CN 101547499A CN 200810084158 A CN200810084158 A CN 200810084158A CN 200810084158 A CN200810084158 A CN 200810084158A CN 101547499 A CN101547499 A CN 101547499A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
提供了一种移动终端的初始小区搜索的方法，所述方法包括：移动终端从PLMN列表中选择一个PLMN，在该PLMN中建立对应于小区的频率列表；基于所选择的PLMN的频率列表搜索合适的小区。本发明通过对现有移动终端的初始小区搜索的方式进行了改进，缩短了执行初始小区搜索所用的时间，加快了搜索速度，减小了移动终端的电池消耗。
A method for initial cell search of a mobile terminal is provided, the method comprising: the mobile terminal selects a PLMN from a PLMN list, and establishes a frequency list corresponding to the cell in the PLMN; searches for a suitable cell based on the frequency list of the selected PLMN. district. The present invention improves the initial cell search method of the existing mobile terminal, shortens the time used for performing the initial cell search, accelerates the search speed, and reduces the battery consumption of the mobile terminal.
Description
Technical field
The present invention relates to the method for the Cell searching in the moving communicating field, specifically, relate to a kind of method of search of initial zone of portable terminal.
Background technology
Portable terminal is the mancarried device that is used for carrying out transfer of data or radio communication when moving.Portable terminal comprises cell phone, personal digital assistant (PDA), personal communication service (PCS) phone, International Mobile Telecommunication 2000 (IMT-2000) terminal and global system for mobile communications (GSM) terminal etc.When giving network for change when mobile terminal-opening or after losing covering, portable terminal will be selected a Public Land Mobile Nerwork, i.e. PLMN (Public Land Mobile Network).For reaching this purpose, portable terminal can be kept a PLMN tabulation, and these are tabulated PLMN according to priority arrangement.The selection of PLMN has automatic, manual two kinds of patterns.When automatic network selection, portable terminal is selected a PLMN automatically according to the priority orders of PLMN, and manually network selection is then presented to the user with all current available networks, selects a PLMN by the user.Its priority level difference of dissimilar PLMN, terminal will be carried out when automatic PLMN selects in the following order successively carrying out:
1) PLMN (RPLMN) or the EPLMN of equal value that successfully registered last time of portable terminal with it;
2) the ownership place PLMN of portable terminal is HPLMN;
3) user who obtains from the file ＂ User Controlled PLMN Selector with AccessTechnology ＂ of SIM card controls PLMN, abbreviates UPLMN as;
4) the control PLMN of operator that obtains from the file ＂ Operator Controlled PLMN Selector with AccessTechnology ＂ of SIM card abbreviates OPLMN as;
5) other signals PLMN preferably.
After PLMN is selected, portable terminal will carry out cell selecting, if portable terminal finds a sub-district that belongs to this PLMN, and satisfy the resident S criterion in sub-district, then portable terminal finds a proper cell, portable terminal will be on this sub-district resident and registration, after succeeding in registration, portable terminal will obtain to serve normally.
Fig. 1 is the flow chart that portable terminal carries out Cell searching in the prior art.As shown in Figure 1, if selected in step S101 after certain PLMN, portable terminal at first judges whether to have preserved the sub-district relevant information for the PLMN of current selection in step S102 when doing cell selecting.If the PLMN that is not current selection preserves the sub-district relevant information, forward directly then that the PLMN to current selection carries out search of initial zone among the step S105 to.If for the PLMN of current selection has preserved some sub-district relevant informations, such as frequency, scrambler etc., then at first in step S103, utilize the information and executing Cell searching of these preservations, the frequency of these preservations and scrambling code information can make portable terminal obtain fast the slot synchronization or the scrambler of sub-district are discerned, thereby accelerate the process of Cell searching.In step S104, determine whether to have found proper cell then.If do not find proper cell, will carry out search of initial zone at step S105.Search of initial zone generally will be searched for all radio bands in the capacity of mobile terminal scope, and to each frequency of search of initial zone, portable terminal will be carried out slot synchronization usually, frame synchronization, scrambler identification, processes such as system information reception.Portable terminal judges whether to have the proper cell can be resident on this frequency then, if do not have, will search for next frequency.
In step S106, portable terminal judges whether to find proper cell.If in the process of search of initial zone, find proper cell, just in step S108, finish the process of Cell searching.If after initial cell search procedure finishes, portable terminal does not also find proper cell, portable terminal will be carried out the arbitrary cells search in step S107, portable terminal will be selected any one acceptable sub-district this moment, enter the restriction service state, in step S108, finish the process of Cell searching; If do not find acceptable sub-district, then can judge whether to carry out the search of suitable cell according to circumstances according to the automatic or manual network selection at different PLMN.
This shows that it is long that portable terminal is carried out the time of once complete search of initial zone.Portable terminal may be supported two kinds even various modes now, such as GSM, and WCDMA, TDSCDMA etc., like this terminal finish the frequency band that full range band ICS need search for can be very wide, may spend long time, the result who causes is that terminal rests under the search condition for a long time.
Now there have been some technological means to improve the speed of search of initial zone, such as the power measurement that carries out a broadband before carrying out search of initial zone at portable terminal earlier, all frequencies are carried out once rough power measurement, find out all frequencies that signal is arranged and, carry out search of initial zone again according to the ordering of the power of signal.This method can improve the speed of search of initial zone to a certain extent.
According to existing technology, the process of portable terminal execution search of initial zone or blindness, in other words, before receiving system message, portable terminal does not know whether the PLMN of searched frequency is the PLMN of current selection, have only after the system message of having received, portable terminal is just known the PLMN of the frequency of searching for.
Above-mentioned this blindness search may cause the decline of search efficiency.Portable terminal is searched for each frequency in a certain order, and the PLMN of these frequency correspondences may be the PLMN of current selection, also may not be.Before searching proper cell, may search for a lot of other frequencies of PLMN, many times, this is the waste of time and battery.If can know the pairing list of frequency of the PLMN of current selection, and these frequencies are preferentially carried out search, just can avoid this problem, reduce the time of Cell searching.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of mode of the search of initial zone that improves current mobile terminal, and described method not only can shorten the used time of search of initial zone, and can reduce battery consumption.
For solving the problems of the technologies described above, the invention provides a kind of method of accelerating the search of initial zone of portable terminal, comprising: portable terminal is selected a PLMN from the PLMN tabulation, sets up the list of frequency corresponding to the sub-district in this PLMN; List of frequency search proper cell based on selected PLMN.
According to an aspect of the present invention, can comprise among HPLMN, EPLMN, UPLMN, the OPLMN at least one in the described PLMN tabulation.
According to an aspect of the present invention, described method also can comprise: if based on not finding proper cell on the list of frequency of selected PLMN, then other radio bands outside the listed frequency of described list of frequency are searched for to find proper cell.
According to an aspect of the present invention, described method also can comprise: if to still not finding proper cell after the described radio band search, then carry out the arbitrary cells search to find acceptable sub-district.
According to an aspect of the present invention, described method also can comprise: if the list of frequency of selected PLMN is empty or the list of frequency of the PLMN of selection does not exist, then all radio bands are carried out the full range search to find proper cell.
According to an aspect of the present invention, described method also can comprise: if still do not find proper cell after the full range search, then carry out the arbitrary cells search to find acceptable sub-district.
According to an aspect of the present invention, when proper cell is searched for,, then this frequency is added in this list of frequency if there is the frequency of not listing the sub-district that belongs to this PLMN in corresponding list of frequency and this list of frequency in certain PLMN.
According to an aspect of the present invention,, then remove the list of frequency of all preservations, and be initially empty list of frequency for the HPLMN of neocaine, UPLMN, OPLMN set up if portable terminal is changed SIM card.
According to an aspect of the present invention, if portable terminal is then removed the list of frequency of existing EPLMN from the EPLMN of network acquisition for the renewal of HPLMN configuration, and be that initiate EPLMN setting is initially empty list of frequency.
According to an aspect of the present invention, if portable terminal is selected other PLMN, then selected other PLMN are set up the correspondent frequency tabulation.
According to embodiments of the invention, since portable terminal preserve HPLMN (with and EPLMN), UPLMN, the list of frequency of OPLMN and other PLMN, when carrying out search of initial zone, the frequency that comprises in the list of frequency of the PLMN of the current selection of first search is to find proper cell, if do not find proper cell, search for not other frequencies in the list of frequency of this preservation again, thereby improved the mode of the search of initial zone of current portable terminal, shortened and carried out the used time of search of initial zone, accelerated search speed, reduced the battery consumption of portable terminal.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the flow chart that portable terminal carries out Cell searching in the prior art;
Fig. 2 is the flow chart that carries out Cell searching according to the portable terminal of the embodiment of the invention;
Fig. 3 is the schematic diagram that in cell search process list of frequency is upgraded according to the embodiment of the invention.
Embodiment
In exemplary embodiment according to the present invention, portable terminal is that its HPLMN (and EPLMN), UPLMN, OPLMN respectively are provided with a list of frequency, and these list of frequencys are stored in the portable terminal, comprise the value of some frequencies respectively.If find the sub-district of above-mentioned a certain PLMN on certain frequency, just the value with this frequency is saved in the list of frequency of this PLMN correspondence.If mobile phone users has manually been selected other PLMN, also set up the correspondent frequency tabulation for this PLMN.
Portable terminal when carrying out Cell searching at every turn, if there is corresponding list of frequency in certain PLMN, and do not finding the sub-district that belongs to this PLMN on the frequency in this list of frequency, just automatically this frequency added in this list of frequency.
If changed SIM card, portable terminal will be removed the list of frequency of all preservations automatically, and be initially empty list of frequency for the HPLMN of neocaine, UPLMN and OPLMN set up.
If, then remove the pairing list of frequency of existing invalid EPLMN, and, initiate EPLMN is initially empty list of frequency for being provided with from the EPLMN of network acquisition for the renewal of HPLMN configuration.
Fig. 2 is the flow chart according to the portable terminal Cell searching of the embodiment of the invention.The step S201 to S204 of Fig. 2 is identical with the step S101 to S104 shown in Fig. 1, just no longer is described in greater detail here.In operation shown in Figure 2, carry out search of initial zone if desired, judge whether at first in step S205 that then whether PLMN for current selection has preserved corresponding list of frequency and this tabulation for empty, wherein, described list of frequency comprises the value of some frequencies, on these frequencies, portable terminal once found the sub-district that belongs to this PLMN.If exist for the list of frequency that the PLMN of current selection preserves, and this list of frequency be empty, then at first carries out search of initial zone on for the frequency in the list of frequency of the PLMN preservation of current selection in step S206.Then, in step S207, judge whether to have found proper cell.If in step S207, judge and found proper cell, then finish cell search process.If do not find proper cell, then carry out step S208, on other frequency, carry out search of initial zone, promptly all radio bands in the terminal capability scope are carried out search of initial zone, but those frequencies that omit step S206 had searched for.If determine in step S205 be that the PLMN of current selection preserves list of frequency or the list of frequency preserved for the PLMN of current selection is sky, then in step S212, carry out corresponding full range search, promptly all radio bands in the terminal capability scope are carried out search of initial zone with step S105 shown in Figure 1.In step S209, the search of initial zone result among step S208 and the step S212 is judged,, then finish the process of Cell searching among the step S211 if found proper cell; If do not find proper cell, then in step S210, carry out the arbitrary cells search, the operation of the arbitrary cells search of Fig. 2 is identical with the step S107 of Fig. 1, here be not described in detail, in any search procedure, if find an acceptable sub-district, portable terminal will enter the restriction service state, finish cell search process simultaneously; If do not find acceptable sub-district, then can judge whether to carry out the search of suitable cell according to circumstances according to the automatic or manual network selection at different PLMN.
Fig. 3 is the schematic diagram that in cell search process list of frequency is upgraded according to the embodiment of the invention.According to the embodiment of the invention, in cell search process,, and read the PLMN at this place, sub-district if in step S301, on a search rate, found a sub-district, then in step S302, judge whether to have preserved list of frequency for this PLMN.Preserved list of frequency if be defined as this PLMN, further judged in step S303 that then current frequency is whether in this list of frequency.If the frequency of current search then adds current frequency in the list of frequency of this preservation in step S304 not in this list of frequency.In step S305, continue to carry out the task of Cell searching then.Do not exist or in step S303, judge current frequency Already in this list of frequency if in step S302, judge the list of frequency of this PLMN, then return the task that step S305 continues to carry out Cell searching.
According to the embodiment of the invention, portable terminal preserve HPLMN (with and EPLMN), UPLMN, the list of frequency of other PLMN that OPLMN and mobile phone users are manually selected.When carrying out search of initial zone,, judge whether to preserve corresponding list of frequency for the PLMN of current selection, if have, this list of frequency of first search if do not find proper cell, is searched for not other frequencies in the list of frequency of this preservation again.And when portable terminal carries out Cell searching at every turn, upgrade the list of frequency of each PLMN correspondence according to Search Results.The present invention improves by the mode to the search of initial zone of current mobile terminal, has shortened the time of carrying out search of initial zone, has accelerated portable terminal and has carried out the speed of search of initial zone, and reduced power consumption.Meanwhile, the present invention carries out in portable terminal all improvement of prior art, and does not need network side to carry out any modification, thereby reduced improved cost and complexity is carried out in initial ranging.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810084158A CN101547499A (en) | 2008-03-27 | 2008-03-27 | Method for searching initial cell of mobile terminal |
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| CN200810084158A CN101547499A (en) | 2008-03-27 | 2008-03-27 | Method for searching initial cell of mobile terminal |
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| CN101547499A true CN101547499A (en) | 2009-09-30 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145624A1 (en) * | 2009-10-15 | 2010-12-23 | 中兴通讯股份有限公司 | Method and terminal for cell selection |
| CN101980571A (en) * | 2010-10-13 | 2011-02-23 | 中兴通讯股份有限公司 | A method and mobile communication terminal for speeding up cell search |
| CN102014457A (en) * | 2010-11-19 | 2011-04-13 | 中兴通讯股份有限公司 | Mobile communication system, and automatic network-selecting method for mobile terminal |
| CN102164259A (en) * | 2011-02-01 | 2011-08-24 | 华为终端有限公司 | Television program searching method, receiving method as well as related equipment and system |
| CN102355712A (en) * | 2011-10-11 | 2012-02-15 | 中兴通讯股份有限公司 | Method for accelerating searching speed of public land mobile network and device |
| WO2014094208A1 (en) * | 2012-12-17 | 2014-06-26 | Qualcomm Incorporated | Method and apparatus for improving frequency scanning during cell acquisition in a td-scdma system |
| CN105592525A (en) * | 2014-10-24 | 2016-05-18 | 中国移动通信集团公司 | Method, apparatus, and system for starting-up network searching by terminal equipment in roaming scene |
| CN105704786A (en) * | 2014-11-28 | 2016-06-22 | 展讯通信（上海）有限公司 | Cell rapid searching method and mobile terminal |
| CN105792163A (en) * | 2014-12-24 | 2016-07-20 | 联芯科技有限公司 | Updating method and updating device of sub-band search association table, cell search method and cell search device |
| CN106256152A (en) * | 2014-05-01 | 2016-12-21 | Lg电子株式会社 | The small region search method performed by terminal in a wireless communication system and the terminal using the method |
| WO2016202294A1 (en) * | 2015-06-19 | 2016-12-22 | 广东欧珀移动通信有限公司 | Network access method and mobile terminal |
| CN106332232A (en) * | 2015-06-30 | 2017-01-11 | 联芯科技有限公司 | Method and system for PLMN search on terminal equipment |
| CN107548122A (en) * | 2016-06-28 | 2018-01-05 | 工业和信息化部电信研究院 | A kind of multimode terminal start method for searching network and device |
| WO2018145468A1 (en) * | 2017-02-08 | 2018-08-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method, terminal and storage medium |
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2008
- 2008-03-27 CN CN200810084158A patent/CN101547499A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145624A1 (en) * | 2009-10-15 | 2010-12-23 | 中兴通讯股份有限公司 | Method and terminal for cell selection |
| WO2012048556A1 (en) * | 2010-10-13 | 2012-04-19 | 中兴通讯股份有限公司 | Method and mobile communication terminal for accelerating cell search |
| CN101980571A (en) * | 2010-10-13 | 2011-02-23 | 中兴通讯股份有限公司 | A method and mobile communication terminal for speeding up cell search |
| CN101980571B (en) * | 2010-10-13 | 2014-12-10 | 中兴通讯股份有限公司 | Method for accelerating cell search and mobile communication terminal |
| WO2012065495A1 (en) * | 2010-11-19 | 2012-05-24 | 中兴通讯股份有限公司 | Mobile communication system, and automatic network-selecting method for mobile terminal |
| CN102014457B (en) * | 2010-11-19 | 2014-11-05 | 中兴通讯股份有限公司 | Mobile communication system, and automatic network-selecting method for mobile terminal |
| CN102014457A (en) * | 2010-11-19 | 2011-04-13 | 中兴通讯股份有限公司 | Mobile communication system, and automatic network-selecting method for mobile terminal |
| CN102164259A (en) * | 2011-02-01 | 2011-08-24 | 华为终端有限公司 | Television program searching method, receiving method as well as related equipment and system |
| CN102355712A (en) * | 2011-10-11 | 2012-02-15 | 中兴通讯股份有限公司 | Method for accelerating searching speed of public land mobile network and device |
| WO2014094208A1 (en) * | 2012-12-17 | 2014-06-26 | Qualcomm Incorporated | Method and apparatus for improving frequency scanning during cell acquisition in a td-scdma system |
| CN106256152B (en) * | 2014-05-01 | 2019-07-02 | Lg电子株式会社 | In a wireless communication system by the terminal small region search method executed and the terminal of use this method |
| CN106256152A (en) * | 2014-05-01 | 2016-12-21 | Lg电子株式会社 | The small region search method performed by terminal in a wireless communication system and the terminal using the method |
| CN105592525A (en) * | 2014-10-24 | 2016-05-18 | 中国移动通信集团公司 | Method, apparatus, and system for starting-up network searching by terminal equipment in roaming scene |
| CN105704786A (en) * | 2014-11-28 | 2016-06-22 | 展讯通信（上海）有限公司 | Cell rapid searching method and mobile terminal |
| CN105792163A (en) * | 2014-12-24 | 2016-07-20 | 联芯科技有限公司 | Updating method and updating device of sub-band search association table, cell search method and cell search device |
| US10015731B2 (en) | 2015-06-19 | 2018-07-03 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile terminal |
| US10051560B2 (en) | 2015-06-19 | 2018-08-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method and mobile terminal |
| WO2016202294A1 (en) * | 2015-06-19 | 2016-12-22 | 广东欧珀移动通信有限公司 | Network access method and mobile terminal |
| CN106332232A (en) * | 2015-06-30 | 2017-01-11 | 联芯科技有限公司 | Method and system for PLMN search on terminal equipment |
| CN106332232B (en) * | 2015-06-30 | 2019-09-27 | 辰芯科技有限公司 | Method and system for PLMN search on terminal equipment |
| CN107548122A (en) * | 2016-06-28 | 2018-01-05 | 工业和信息化部电信研究院 | A kind of multimode terminal start method for searching network and device |
| CN107548122B (en) * | 2016-06-28 | 2020-09-18 | 工业和信息化部电信研究院 | A kind of multi-mode terminal booting method and device for searching network |
| WO2018145468A1 (en) * | 2017-02-08 | 2018-08-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method, terminal and storage medium |
| US10299196B2 (en) | 2017-02-08 | 2019-05-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Network access method, terminal and storage medium |
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Open date: 20090930 |