CN101616469A - Method and a kind of portable terminal that a kind of cell initial search is selected - Google Patents
Method and a kind of portable terminal that a kind of cell initial search is selected Download PDFInfo
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- CN101616469A CN101616469A CN200910089735A CN200910089735A CN101616469A CN 101616469 A CN101616469 A CN 101616469A CN 200910089735 A CN200910089735 A CN 200910089735A CN 200910089735 A CN200910089735 A CN 200910089735A CN 101616469 A CN101616469 A CN 101616469A
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Abstract
The invention provides method and a kind of portable terminal that a kind of cell initial search is selected, this method comprises the steps: step a, when needs initiated just to search cell selecting, portable terminal is stored self, the current band information of resident network support and the band information of portable terminal support of requiring got common factor; Step b, portable terminal require physical layer that the frequency range in occuring simultaneously is carried out just searching frequency sweep.Utilize technique scheme, when needs initiate just to search cell selecting, can use band information more accurately, thus can be more fast and find the sub-district that requires under the residing network to carry out resident exactly, and then reduced the portable terminal consumption of electric, saved resource.
Description
Technical field
The present invention relates to communication field, particularly relate to method and a kind of portable terminal that a kind of cell initial search is selected.
Background technology
After user terminal UE powered on and selects a Public Land Mobile Nerwork PLMN, it is resident that UE begins to seek proper cell in this PLMN, and this process is called cell selecting.Behind persistent district, it is resident to select the another one sub-district to carry out again according to different situation UE, and this process is called the sub-district gravity treatment.
The type of cell selecting mainly is divided into two kinds, and a kind of is to utilize stored information to go to select, and this stored information may be sub-district storage, that UE was in the past resident or in the past resident frequency etc.Another then is to carry out just searching cell selecting, carries out the frequency sweep operation in supported all frequency ranges of UE, up to find one can be resident the sub-district.
The general flow of cell selecting is: at first judge former resident cell information or the frequency point information that has or not storage, if these information of preferential trial are arranged; If do not have or attempt after these information all can not resident success, then can initiate the first cell selecting of searching of full frequency band.
Fig. 1 is that the cell initial search of prior art is selected schematic flow sheet.As Fig. 1, the cell initial search of prior art is selected to comprise: step 101, and UE will carry out just searching frequency sweep; Step 102 is got all band informations that the UE ability is supported; Step 103 requires physical layer that all frequency ranges that UE supports are carried out frequency sweep.For first this process of cell selecting of searching of prior art, the frequency range of selection is all band informations that UE supports, the scope of general frequency sweep is bigger, therefore can compare power consumption and consuming time.
But to require the band limits of residing network be not to comprise and involved relation to the band limits supported of UE with specifying in fact, therefore not that all frequencies of sweeping to all are applicable to the current resident network that requires, so just consumed the electric weight of portable terminal, also can prolong the resident time, waste resource.
Summary of the invention
The purpose of this invention is to provide method and a kind of portable terminal that a kind of cell initial search is selected, so that be in portable terminal among the mobile network when carrying out just searching cell selecting, it is resident to find the sub-district to carry out quickly.
To achieve these goals, the invention provides the method that a kind of cell initial search is selected, wherein, comprise the steps:
Step a, when needs initiated just to search cell selecting, portable terminal is stored self, the current band information of resident network support and the band information of described portable terminal support of requiring got common factor;
Step b, described portable terminal require physical layer that the frequency range in the described common factor is carried out just searching frequency sweep.
Preferably, described method wherein, among the described step a, also comprised before described portable terminal is got common factor:
Described portable terminal judges self whether to store the described current band information that requires resident network support; In this way, execution in step a then; Otherwise described portable terminal requires described physical layer that the frequency range of described portable terminal support is carried out just searching frequency sweep.
Preferably, described method wherein, before described step a, also comprises:
Step a1 with the described current band information that requires resident network support, pre-deposits first memory space in the described portable terminal;
Described first memory space is a band information that open up in advance, that be used for the network support of storing predetermined number, and described predetermined number is not less than 1.
Preferably, described method wherein, after described portable terminal resides in predetermined network, also comprises:
The band information of the described predetermined network support that comprises in the message that the network side that receives is issued deposits described first memory space in.
Preferably, described method wherein, after described portable terminal resides in predetermined network, also comprises:
The band information of the described predetermined network support that comprises in the message that portable terminal utilizes network side to issue upgrades the band information of the map network support of having stored in described first memory space.
Preferably, described method, wherein, the message that network side issues is:
When the Radio Resource control connection discharges, the release message that network side issues.
On the other hand, provide a kind of portable terminal, wherein, comprising:
Memory module is used for the band information of memory mobile terminal support and the band information of a predetermined number network support, and described predetermined number is not less than 1;
The common factor acquisition module is used for when needs initiate just to search cell selecting the band information of resident network support and the band information of described portable terminal support of requiring that store in the described memory module, current being got common factor;
Just search the frequency sweep module, be used for the requirement physical layer frequency range of described common factor is carried out just searching frequency sweep.
Preferably, described portable terminal wherein, also comprises:
Judge module, be used for before described common factor acquisition module is got described common factor, judging whether described memory module stores the described current band information that requires resident network support, and when in described memory module, storing the band information of described network support, trigger described common factor acquisition module and get described common factor;
Search the frequency sweep module at the beginning of described, when being further used in described memory module, not storing the band information of described network support, require described physical layer that the frequency range of described portable terminal support is carried out just searching frequency sweep.
Preferably, described portable terminal wherein, also comprises:
Update module is used for when receiving the message that network side issues, the band information that the map network that utilizes the band information of the current residing network support that comprises in the described message to upgrade to store in the described memory module is supported.
Preferably, described portable terminal, wherein, the message that described network side issues is: when the Radio Resource control connection discharges, the release message that network side issues.
A technical scheme in the technique scheme has following technique effect:
When needs initiate just to search cell selecting, mobile terminal UE is by getting common factor to the current band information that requires resident network to support with all band informations that UE supported, and require physical layer to use to get the band limits that obtains that occurs simultaneously to carry out frequency sweep, avoided like this by just searching the frequency that frequency that cell selecting finds does not belong to current resident network support, also avoided requiring physical layer to remove to search the unsupported band limits of UE, the scope of frequency sweep that minimizing is also accurate, can use band information more accurately, thereby can be more fast and find the sub-district that requires under the residing network to carry out resident exactly, and then reduced the portable terminal consumption of electric, saved resource.
Description of drawings
Fig. 1 is that the cell initial search of prior art is selected schematic flow sheet;
Fig. 2 is the schematic flow sheet of the method selected of the cell initial search of one embodiment of the invention;
Fig. 3 is the schematic flow sheet of the method selected of the cell initial search of another embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the method selected of the cell initial search of further embodiment of this invention;
Fig. 5 is the structural representation of the portable terminal of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 2 is the schematic flow sheet of the method selected of the cell initial search of one embodiment of the invention.As Fig. 2, the method that the cell initial search of this embodiment is selected comprises the steps:
Fig. 3 is the schematic flow sheet of the method selected of the cell initial search of another embodiment of the present invention.As Fig. 3, the method that the cell initial search of this embodiment is selected comprises the steps:
The method that the cell initial search of the embodiment of the invention is selected, for requiring resident network, by formulating certain storage policy, the band information that storage networking is supported can make that its corresponding band limits information effectively obtains using.Exemplarily, as the network of storing in the user identification module SIM card, can in the memory block, open up memory cell and store the band information corresponding with above-mentioned network.
Fig. 4 is the schematic flow sheet of the method selected of the cell initial search of further embodiment of this invention.In the method for this embodiment, in the memory block of portable terminal such as mobile phone, open up the first memory space PlmnInfoList in advance, the band information that is used under the storing predetermined number network is the band information that a predetermined number network is supported, this predetermined number is not less than 1.In specific implementation, can be initially write the UE ability information be UE support all band informations the time, the frequency range ability information that writes predetermined one or more networks in first memory space is the band information of network support.
When portable terminal resides in predetermined network, if issuing, network side comprises the band information that current residing network is supported, then portable terminal receives this message, and the band information that the current residing network in this message is supported is deposited in above-mentioned first memory space.Herein deposited two kinds of situations in, a kind of is the band information that does not exist current residing network to support when depositing in first memory space, in such cases the time, portable terminal directly deposits the band information of the network support of correspondence in first memory space; Second kind of situation is, stored the band information that current residing network is supported in first memory space, in this case, the band information supported of the current residing network that comprises in the message that the portable terminal utilization receives removes to cover the band information that the map network stored in first memory space is supported.Exemplarily, this current resident network is the TD-SCDMA network.Exemplarily, the message that this network side issues is that (RadioResource Control RRC) connects when discharging the release message that network side issues in Radio Resource control.Deposit this band information and corresponding network thereof in PlmnInfoList.
For portable terminal, it can have a plurality of by resident network, after it resides in a certain predetermined network, include the band information that current network is supported in the message as the network side transmission, the band information that portable terminal receives this message and the network support that will comprise remains in first memory space, uses when carrying out just searching cell selecting in order to later portable terminal.
Whether the process for requiring to carry out just searching cell selecting at first stores the current band information that requires resident network support in the enquiry mobile terminal; In this way, then this information is taken out, get common factor, require physical layer that the frequency range of getting behind the common factor is carried out frequency sweep afterwards with the band information in the UE ability; Otherwise, directly use the band information of UE ability to carry out frequency sweep.As Fig. 4, this embodiment first searched the frequency sweep system of selection and mainly comprises the steps:
Step 401, UE will carry out just searching frequency sweep;
Step 402 is obtained all band informations that UE supports, is designated as UeSupFreqBand;
Step 403 searches in PlmnInfoList whether the current resident network that requires is arranged; In this way, then change step 405 over to; Otherwise, change step 404 over to;
Step 404, UeSupFreqBand is composed to ActScanFreqBand, ActScanFreqBand is the variable that is used to identify the band limits of actual needs frequency sweep, is about to all band informations that UE supports band limits as the actual needs frequency sweep, and changes execution in step 407 over to;
Step 405 is taken out the current band information that requires resident network support from PlmnInfoList, and this information is designated as PlmnSupFreqBand;
Step 406, the band information UeSupFreqBand that UE is supported gets common factor with the current band information PlmnSupFreqBand of residing network support that requires, band information in occuring simultaneously is composed to ActScanFreqBand, obtain the band limits ActScanFreqBand of actual needs frequency sweep, the band limits in being about to occur simultaneously is as the band limits of actual needs frequency sweep;
Step 407 requires physical layer that the frequency range ActScanFreqBand of appointment is carried out frequency sweep;
Step 408 waits for that physical layer reports the frequency sweep result, and process finishes.
In this example, what store among the PlmnInfoList is the band information of network and this network support, when there is the network information in all in PlmnInfoList, and the band information of i.e. this network support of ability information of promptly corresponding this network correspondence of existence; So, in this example, can be by judging whether to exist the network information to judge whether to exist the band information of network support.
Fig. 5 is the structural representation of the portable terminal of one embodiment of the invention.As Fig. 5, the portable terminal of this embodiment comprises:
Common factor acquisition module 502 is used for when needs initiate just to search cell selecting the band information of resident network support and the band information of described portable terminal support of requiring that store in the described memory module, current being got common factor;
Just search frequency sweep module 503, be used for the requirement physical layer frequency range of described common factor is carried out just searching frequency sweep.
Preferably, the portable terminal of the embodiment of the invention also comprises:
Judge module, be used for before described common factor acquisition module is got described common factor, judging whether described memory module stores the described current band information that requires resident network support, and when in described memory module, storing the band information of described network support, trigger described common factor acquisition module and get described common factor;
Search the frequency sweep module at the beginning of described, when being further used in described memory module, not storing the band information of described network support, require described physical layer that the frequency range of described portable terminal support is carried out just searching frequency sweep.
Preferably, the portable terminal of the embodiment of the invention also comprises:
Update module is used for when receiving the message that network side issues, the band information that the map network that utilizes the band information of the current residing network support that comprises in the described message to upgrade to store in the described memory module is supported.
Preferably, in the portable terminal of the embodiment of the invention, the message that above-mentioned network side issues is: when the Radio Resource control connection discharges, and the release message that network side issues.
In sum, use this initial cell search method, can reduce and accurately require the swept frequency range of physical layer, thereby make physical layer can reduce the unsupported frequency range of removal search, and removal search does not belong to the frequency range of current network, make that like this process of cell initial search is quick more and accurate, thereby also just saved resource.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the method that cell initial search is selected is characterized in that, comprises the steps:
Step a, when needs initiated just to search cell selecting, portable terminal is stored self, the current band information of resident network support and the band information of described portable terminal support of requiring got common factor;
Step b, described portable terminal require physical layer that the frequency range in the described common factor is carried out just searching frequency sweep.
2. method according to claim 1 is characterized in that, among the described step a, also comprises before described portable terminal is got common factor:
Described portable terminal judges self whether to store the described current band information that requires resident network support; In this way, execution in step a then; Otherwise described portable terminal requires described physical layer that the frequency range of described portable terminal support is carried out just searching frequency sweep.
3. method according to claim 1 is characterized in that, before described step a, also comprises:
Step a1 with the described current band information that requires resident network support, pre-deposits first memory space in the described portable terminal;
Described first memory space is a band information that open up in advance, that be used for the network support of storing predetermined number, and described predetermined number is not less than 1.
4. method according to claim 3 is characterized in that, after described portable terminal resides in predetermined network, also comprises:
The band information of the described predetermined network support that comprises in the message that the network side that receives is issued deposits described first memory space in.
5. method according to claim 3 is characterized in that, after described portable terminal resides in predetermined network, also comprises:
The band information of the described predetermined network support that comprises in the message that portable terminal utilizes network side to issue upgrades the band information of the map network support of having stored in described first memory space.
6. according to claim 4 or 5 described methods, it is characterized in that the message that network side issues is:
When the Radio Resource control connection discharges, the release message that network side issues.
7. a portable terminal is characterized in that, comprising:
Memory module is used for the band information of memory mobile terminal support and the band information of a predetermined number network support, and described predetermined number is not less than 1;
The common factor acquisition module is used for when needs initiate just to search cell selecting the band information of resident network support and the band information of described portable terminal support of requiring that store in the described memory module, current being got common factor;
Just search the frequency sweep module, be used for the requirement physical layer frequency range of described common factor is carried out just searching frequency sweep.
8. according to the described portable terminal of claim 7, it is characterized in that, also comprise:
Judge module, be used for before described common factor acquisition module is got described common factor, judging whether described memory module stores the described current band information that requires resident network support, and when in described memory module, storing the band information of described network support, trigger described common factor acquisition module and get described common factor;
Search the frequency sweep module at the beginning of described, when being further used in described memory module, not storing the band information of described network support, require described physical layer that the frequency range of described portable terminal support is carried out just searching frequency sweep.
9. according to claim 7 or 8 described portable terminals, it is characterized in that, also comprise:
Update module is used for when receiving the message that network side issues, the band information that the map network that utilizes the band information of the current residing network support that comprises in the described message to upgrade to store in the described memory module is supported.
10. according to the described portable terminal of claim 9, it is characterized in that the message that described network side issues is: when the Radio Resource control connection discharges, the release message that network side issues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910089735A CN101616469A (en) | 2009-07-22 | 2009-07-22 | Method and a kind of portable terminal that a kind of cell initial search is selected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910089735A CN101616469A (en) | 2009-07-22 | 2009-07-22 | Method and a kind of portable terminal that a kind of cell initial search is selected |
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| CN101616469A true CN101616469A (en) | 2009-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910089735A Pending CN101616469A (en) | 2009-07-22 | 2009-07-22 | Method and a kind of portable terminal that a kind of cell initial search is selected |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106792997A (en) * | 2016-12-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of cell selecting method and terminal device |
| CN111954317A (en) * | 2020-08-10 | 2020-11-17 | Tcl通讯（宁波）有限公司 | Network connection method, device, storage medium and mobile terminal |
-
2009
- 2009-07-22 CN CN200910089735A patent/CN101616469A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106792997A (en) * | 2016-12-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of cell selecting method and terminal device |
| CN111954317A (en) * | 2020-08-10 | 2020-11-17 | Tcl通讯（宁波）有限公司 | Network connection method, device, storage medium and mobile terminal |
| CN111954317B (en) * | 2020-08-10 | 2022-07-08 | Tcl通讯（宁波）有限公司 | Network connection method, device, storage medium and mobile terminal |
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Application publication date: 20091230 |