CN102984788A - Radio access technology RAT module network selection method - Google Patents
Radio access technology RAT module network selection method Download PDFInfo
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- CN102984788A CN102984788A CN 201110258215 CN201110258215A CN102984788A CN 102984788 A CN102984788 A CN 102984788A CN 201110258215 CN201110258215 CN 201110258215 CN 201110258215 A CN201110258215 A CN 201110258215A CN 102984788 A CN102984788 A CN 102984788A
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Abstract
The present invention provides a radio access technology RAT module network selection method. The method is used in a multi-mode mobile communication system, and comprises: a first RAT module acquires the cell ID of the cell the first RAT module belongs to; the first RAT module sends the cell ID to a second RAT module; and the second RAT module performs scanning in a specific frequency band by using the cell ID, in order to locate a specific cell. By using the radio access technology RAT module network selection method provided by the present invention, the network selection speed can be improved, and the power consumption of UE is reduced.
Description
Technical field
The present invention treats single usim card terminal technology relevant for multimode is two, more specifically, and relevant for RAT module network selection method in the multi-mode mobile communication system.
Background technology
Two single usim card terminal and the traditional LTE multimodes treated of LTE multimode treat that singly the main distinction of single usim card terminal is that the former can use a usim card to access simultaneously LTE and 2G (perhaps 3G), and the latter uses a usim card can only access LTE or 2G (perhaps 3G) simultaneously.
The LTE multimode is two treats that the main advantage of single usim card terminal (back abbreviation terminal) has following 4 points: (1) is because speech business is carried on 2G or the 3G, so QoS of voice is high; (2) can between 2G (perhaps 3G) and LTE, change according to network condition at that time because of packet switching (packet switch, PS) business, so flexibility is strong; (3) reduced the work of operator on the allocation and optimization network; (4) because LTE can be registered in different PLMN with 2G (perhaps 3G), so the ability of global roaming is stronger.
Because user's equipment (User Equipment that multimode is multi-link, write a Chinese character in simplified form and be UE) a plurality of RAT modules (modulator-demodulator of RAT for example arranged, hereinafter be denoted as RAT Modem), so support simultaneously module standby or the connection of a plurality of wireless access technologys (Radio Access Technology, RAT) (wireless access technology is GSM, WCDMA, TD-SCDMA, CDMA2000, LTE, WiMAX, WiFi and other etc. for example).Therefore, the meaning that information sharing just becomes important between a plurality of RAT modules.
Summary of the invention
In view of this, the invention provides a kind of radio access technology RAT module network selection method.
The invention provides a kind of radio access technology RAT module network selection method, the method is used for the multi-mode mobile communication system, and the method comprises: the residential quarter ID of RAT module residential quarter that acquisition is subordinate to; The one RAT module sends to the 2nd RAT module with this residential quarter ID; The 2nd RAT module utilizes this residential quarter ID to implement scanning in a special frequency channel, to find a specific cell.
The present invention provides a kind of radio access technology RAT module network selection method in addition, and the method is used for the multi-mode mobile communication system, and the method comprises: the adjacent cell information of RAT module residential quarter that acquisition is subordinate to; The one RAT module sends to the 2nd RAT module with this residential quarter ID; The 2nd RAT module utilize this adjacent cell information and store list information carry out the residential quarter and select, to obtain a specific cell.
Radio access technology RAT module network selection method provided by the invention can improve network selection speed, reduces the UE power consumption.
Description of drawings
Fig. 1 provides the MCC schematic diagram of looking for net required for RAT_A according to an embodiment of the invention for RAT_B.
Fig. 2 is adjacent cell information and the schematic diagram of store list information overlap.
Fig. 3 for use adjacent cell information and store list information do not distinguish the schematic diagram that priority is looked for network process.
Fig. 4 implements to look for the schematic diagram of network process for using adjacent cell information and store list information according to priority order from high to low.
Embodiment
In the middle of specification and claim, used some vocabulary to censure specific assembly.One of ordinary skill in the art should understand, and same assembly may be called with different nouns by electronic installation manufacturer.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the criterion that is used as distinguishing with the difference of assembly on function.Be an open term mentioned " comprising " in the middle of specification and the claim in the whole text, so should be construed to " comprise but be not limited to ".In addition, " couple " word this for comprise any directly and indirectly be electrically connected means.Therefore, be couple to one second device if describe a first device in the literary composition, then represent this first device and can directly be electrically connected in this second device, or indirectly be electrically connected to this second device through other devices or connection means.
The invention provides a kind of method that information helps two kinds of scenes of the 2nd RAT module (for example RAT_B) network selection and help the 2nd RAT module is looked for net under these two kinds of scenes that a RAT module (for example RAT_A) obtains that sees through.One of ordinary skill in the art be appreciated that here RAT_A and RAT_B only in order to explanation, its applicable system is not limited to 2G/3G/LTE, any system with a plurality of RAT functions of support all can adopt said method, be not limited with example in the specification, and above-mentioned RAT module comprises Modem.
According to embodiment provided by the invention, the information that obtains through a RAT module helps the first scene of the 2nd RAT module (for example RAT_B) network selection to be: when 2G/3G scans the public mobile land mobile network identification (PLMN ID) of the first residential quarter (cell), Mobile Country Code MCC (Mobile Country Code, MCC) issue LTE chip (chip), LTE chip (chip) just can only be swept the frequency range that this state supports, accelerates LTE and looks for net.Affiliated technical field technical staff is appreciated that the LTE chip comprises LTE modem.
There is the public land mobile network sign (PLMN ID) of oneself in any operator (operator), and may there be a plurality of PLMN ID in an operator; But a PLMN ID can only be by unique operator that distributes to.A public land mobile network sign (PLMN ID) all is comprised of two parts: Mobile Country Code MCC MCC and Mobile Network Code (Mobile Network Code, MNC).MCC is Mobile Network Code, and it is by International Telecommunication Association (ITU) unified distribution and management, is used for the affiliated country of unified identifying mobile network, has 3 bit digital, and for example: the MCC of the People's Republic of China (PRC) is 460.But a handful of countries have been assigned with more than 1 MCC, for example: the MCC of the U.S. is 310 and 316.MNC is Mobile Network Code.For any one residential quarter (residential quarter), its unique coding is arranged, can be called global residential quarter ID (Global cell ID).Whole world residential quarter ID is comprised of three parts, is respectively PLMN ID, LAC/TAC (LAC:location area code/Tracking area code), residential quarter ID (cell ID).So, when obtaining the global residential quarter ID of a residential quarter, just can obtain the PLMN that this residential quarter is subordinate to.
When UE (please notes, one of ordinary skill in the art are appreciated that, UE is not limited to mobile phone, also can be for comprising any terminal of mobile communication function) when finding a residential quarter by frequency sweep, just can obtain by relevant system message (System Information) PLMN under this residential quarter.And then mate by the PLMN ID with desired selection, and then can judge whether UE can go to resident (camp on) this residential quarter.
For any wireless access technology RAT, its special operable frequency range (Frequency Band) is arranged, can support 900MHz, 1800MHz, 1900MHz etc. such as GSM.There is unified planning in each country for the Radio Resource (frequency spectrum) of oneself, and wherein, a frequency range can only be assigned to an operator.So, can set up a database with corresponding relation with following three: the corresponding frequency range of MCC, wireless access technology RAT, wireless access technology of country, as shown in table 1.
Table 1MCC, RAT and frequency range corresponding relation
By top description: for the Modem of UE, when scanning a residential quarter, just obtained the PLMN that this residential quarter is subordinate to, also just can obtain MCC, frequency range relation that namely can be corresponding with wireless access technology according to MCC is known the frequency range of supporting for any wireless access technology of this country.
For the UE with multiple wireless access technology RAT, if a RAT module sends to other RAT modules with the MCC that learns, other RAT modules just can only scan the frequency range that the corresponding RAT module of this state is supported in network selection so, and then reach following two purposes: improve the speed of looking for net, reduce the UE power consumption.If any residential quarter (perhaps not finding satisfactory residential quarter) that the frequency range of supporting in the corresponding RAT module of this state does not find this UE to be subordinate to, this RAT module can be carried out frequency sweep to own other frequency ranges of supporting and be come Network Search (beating).
The performance of looking for net in order to improve best other RAT modules when any one RAT module scans first residential quarter, just can send to other RAT modules with the MCC of the corresponding PLMN ID in this residential quarter.For example: if UE has two kinds of RAT modules: TD-SCDMA module and LTE module, an if RAT module, be that the TD-SCDMA module is when scanning first residential quarter, corresponding MCC is issued the 2nd RAT module LTE module, the LTE module is in frequency sweep so, just can only scan the frequency range that the LTE technology of this state is supported.If do not find residential quarter (perhaps satisfactory residential quarter), the LTE module scans other frequency ranges that oneself is supported again so.
In addition, consider some special circumstances, a RAT module may find a plurality of residential quarters in looking for the process of net, and these residential quarters have a plurality of different MCC.These situations are exemplified below:
1) UE is in the country with a plurality of MCC;
2) UE is in the edge, national boundaries.
In view of this, if a RAT module is when having found the residential quarter with different MCC, this RAT module is just informed other RAT modules to above-mentioned different MCC.Other RAT modules when receiving above-mentioned MCC, just above-mentioned MCC the frequency range supported of the wireless access technology of corresponding country join the frequency range ranks of preferentially searching.
Fig. 1 provides the MCC schematic diagram of looking for net required for RAT_A according to an embodiment of the invention for RAT_B.In Fig. 1, take UE with 2 RAT modules (RAT_A, RAT_B) as example, illustrate how the UE of many RAT module reads the network selection efficient that MCC improved other RAT modules afterwards by a RAT module.
Please refer to Fig. 1, the RAT_A of UE carries out frequency sweep, to select residential quarter (step 101), if find residential quarter (step 102, result are yes), then from global residential quarter ID, obtain MCC, if RAT_A obtains MCC for the first time, perhaps obtain and different before MCC, then send to RAT_B (step 103), so that RAT_B is used for obtaining the frequency range that this RAT of this state supports by MCC, form preferred frequency range (step 106).If after RAT_A finds the residential quarter and MCC is sent to RAT_B, RAT_A can beat and obtain residential quarter ID, whether belongs to the PLMN (step 104) that is looked for to learn this residential quarter, if belong to, then RAT_A stops to look for net, otherwise continues frequency sweep to select the residential quarter.For RAT_B, after it forms preferred frequency range, can find PLMN (step 107) by preferred frequency range, if find then stop network selection (step 110), whether there is new preferred frequency range to generate (step 108) otherwise continue to search, if no, then scan not preferred frequency range to search PLMN (step 109).Certainly, this scheme is also applicable for the UE that surpasses 2 RAT modules, illustrates, and in one embodiment, only needs RAT_A to tell the RAT module that other are all with the MCC that reads, and other RAT modules can be carried out network selection according to method shown in the figure.
For the UE with a plurality of RAT modules, under any circumstance, if any one RAT module read one from the past different MCC, above-mentioned MCC can be notified to other RAT modules, so improve other RAT modules look for net efficient.Please refer to Fig. 1, if RAT_B has read a different MCC, RAT_B just sends to RAT_A to above-mentioned MCC, to optimize the follow-up network selection of RAT_A.
In another embodiment, RAT_B obtains the adjacent cell information (neighbor cell info) that the RAT_A place obtains, and begins to look for net.RAT_B can select (cell selection) in conjunction with before carrying out the residential quarter for the store list information of leaving with PLMN (stored list information).In order to accelerate the speed of resident suitable cell (suitable cell).
When single RAT module is looked for net, can by all the RF channels (channel) in all frequency bands of oneself supporting are scanned, find suitable cell.This mode is more consuming time, in certain embodiments, can be optimized by some modes, thereby dwindle the scope of frequency sweep, raise the efficiency, illustrate, storage information of mobile phone utilization is carried out residential quarter selection (stored cell selection) among the 3G, UE dwindles the scope of frequency sweep with information such as previous storage frequency or cell parameters, when utilizing storage information to carry out the residential quarter when selecting not find suitable cell, just can do full range scanning.
The two UE that treat single USIM of multimode, when RAT_A is in state of activation, can obtain by some modes the adjacent cell information of RAT_B, illustrate, 2G Modem can obtain the LTE adjacent cell information by 2Quater (system information 2quater), and 3G Modem can or measure control message (measurement control message) and obtain the LTE adjacent cell information by sib19 (System information block 19).Namely comprised the information that can help RAT_B to look for net in the adjacent cell information, such as frequency, cell parameter etc.
RAT_A passes to RAT_B with the adjacent cell information of obtaining.Begin to look for when net at RAT_B, the adjacent cell information of using RAT_A to transmit helps to dwindle the scope of frequency sweep, can make the RAT_B suitable cell of having an opportunity to find sooner.
According to another embodiment, the adjacent cell information that RAT_B transmits RAT_A and UE or (U) SIM card for among the PLMN store list information (stored list information) merge, and be used for looking for net.Wherein store list information is that the previously stored frequency of UE and cell parameter etc. can be with the information of helping look for net.
Fig. 2 is adjacent cell information and the schematic diagram of store list information overlap.As shown in Figure 2, adjacent cell information (X+Y zone) and store list information (Y+Z zone) may have the part (Y zone) of repetition, form like this Three regions division, be respectively X, Y, Z.According to embodiments of the invention, RAT_B accelerates to find the way of suitable cell can comprise following dual mode with the information of adjacent cell information and store list information merging:
Mode one: please refer to Fig. 3, Fig. 3 for use adjacent cell information and store list information do not distinguish the schematic diagram that priority is looked for network process.Wherein, the information of X as shown in Figure 2, Y and Z part (be adjacent cell information and store list information) is not distinguished priority, be directly used in and look for net (step 301), so that the information among the use X+Y+Z is dwindled swept frequency range and is done scanning, if do not find suitable cell (step 302, result are no), do again full range scanning (step 303), if find suitable cell, then suitable cell is reported to NAS, and finish scanning (step 304).
Mode two: please refer to Fig. 4, Fig. 4 implements to look for the schematic diagram of network process for using adjacent cell information and store list information according to priority order from high to low.Wherein, the data separation priority of X as shown in Figure 2, Y and Z part is looked for net according to priority order from high to low.In one embodiment, because the information such as the frequency that Y partly comprises or cell parameter are adjacent cell information and the coincidence information of store list information, so it is the highest that Y partly sets priority, help to look for net if dwindle swept frequency range with them, most possibly find the soonest suitable cell.Then set X part priority and take second place, Z part priority is minimum.If use Y part frequency sweep (step 401) not find suitable cell (step 402, result are no), the information frequency sweep that according to priority partly provides with X and Z successively again (step 403-step 406); If also do not find suitable cell (step 406, result are no), do again full range scanning (step 407).If find suitable cell in step 402, step 404 or step 406, then report suitable cell, and finish frequency sweep (step 408).
The present invention describes in conjunction with above-described embodiment, and right above-described embodiment only is used for explanation the present invention.The application treats singly that take two single usim card terminal and the LTE multimodes treated of LTE multimode single usim card terminal is as the example explanation, so it will be appreciated by those skilled in the art that, method provided by the invention is not only applicable to LTE multimode usim card terminal, and method provided by the invention also is suitable for for example multimode terminal of GSM, WCDMA, TD-SCDMA, CDMA2000, LTE, WiMAX, WiFi of other communication systems.One of ordinary skill in the art can understand, and can retouch and revise above-described embodiment, all do not exceed protection scope of the present invention, and protection scope of the present invention is as the criterion with the claim content.
Claims (5)
1. radio access technology RAT module network selection method, the method is used for the multi-mode mobile communication system, and the method comprises:
The cell ID of the one RAT module residential quarter that acquisition is subordinate to;
The one RAT module sends to the 2nd RAT module with this cell ID;
The 2nd RAT module utilizes this cell ID to implement scanning in a special frequency channel, to find a specific cell.
2. radio access technology RAT module network selection method as claimed in claim 1 is characterized in that:
This special frequency channel is subordinate to the corresponding frequency band of location, residential quarter in a RAT module for this RAT module, this specific cell is subordinate to the residential quarter that is subordinate to of location, residential quarter for the 2nd RAT module in a RAT module, and a RAT module and the 2nd RAT module are utilized the different radio access technique.
3. radio access technology RAT module network selection method, the method is used for the multi-mode mobile communication system, and the method comprises:
The adjacent cell information of the one RAT module residential quarter that acquisition is subordinate to;
The one RAT module sends to the 2nd RAT module with this cell ID;
The 2nd RAT module utilize this adjacent cell information and store list information carry out the residential quarter and select, to obtain a specific cell.
4. radio access technology RAT module network selection method as claimed in claim 3, it is characterized in that, this adjacent cell information comprise the first frequency, the first cell parameter, this store list information comprise the second frequency and the second cell parameter, the 2nd RAT module utilize this adjacent cell information and store list information carry out the residential quarter and select.
5. radio access technology RAT module network selection method as claimed in claim 4 is characterized in that:
The 2nd RAT module distinguish priority utilize this adjacent cell information and store list information carry out the residential quarter and select, perhaps the 2nd RAT module do not distinguish priority and utilize this adjacent cell information and store list information carry out the residential quarter and select.
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| CN103763760A (en) * | 2014-01-27 | 2014-04-30 | 中国联合网络通信集团有限公司 | Network selection method and 4G multi-mode terminal |
| WO2015081467A1 (en) * | 2013-12-02 | 2015-06-11 | 华为技术有限公司 | Method and apparatus for determining whether ue enters wifi coverage |
| CN105992189A (en) * | 2015-03-06 | 2016-10-05 | 中兴通讯股份有限公司 | Method and device for obtaining network service through frequency band information |
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| WO2017084074A1 (en) * | 2015-11-19 | 2017-05-26 | Qualcomm Incorporated | Methods and apparatus to improve user equipment camping on an operator preferred network |
| WO2017140267A1 (en) * | 2016-02-19 | 2017-08-24 | 北京佰才邦技术有限公司 | Network differentiation method, apparatus and device, chip and terminal |
| WO2017185270A1 (en) * | 2016-04-27 | 2017-11-02 | Qualcomm Incorporated | Network camp on for multi-sim devices |
| CN109155967A (en) * | 2016-05-20 | 2019-01-04 | 瑞典爱立信有限公司 | RAT selection in bimodulus transceiver |
| WO2021207996A1 (en) * | 2020-04-16 | 2021-10-21 | Qualcomm Incorporated | Method to speed up 5gnr sa network register for dual-sim device during roaming |
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| WO2015081467A1 (en) * | 2013-12-02 | 2015-06-11 | 华为技术有限公司 | Method and apparatus for determining whether ue enters wifi coverage |
| CN103763760A (en) * | 2014-01-27 | 2014-04-30 | 中国联合网络通信集团有限公司 | Network selection method and 4G multi-mode terminal |
| CN103763760B (en) * | 2014-01-27 | 2017-09-29 | 中国联合网络通信集团有限公司 | Network selecting method and 4G multimode terminals |
| CN105992189A (en) * | 2015-03-06 | 2016-10-05 | 中兴通讯股份有限公司 | Method and device for obtaining network service through frequency band information |
| CN106559831A (en) * | 2015-09-25 | 2017-04-05 | 英特尔Ip公司 | The mobile terminal of detection Network Access Point, mobile baseband modem and method |
| WO2017084074A1 (en) * | 2015-11-19 | 2017-05-26 | Qualcomm Incorporated | Methods and apparatus to improve user equipment camping on an operator preferred network |
| CN107105441A (en) * | 2016-02-19 | 2017-08-29 | 北京佰才邦技术有限公司 | Distinguish method, device and the equipment of network type |
| WO2017140267A1 (en) * | 2016-02-19 | 2017-08-24 | 北京佰才邦技术有限公司 | Network differentiation method, apparatus and device, chip and terminal |
| CN107105441B (en) * | 2016-02-19 | 2020-04-10 | 北京佰才邦技术有限公司 | Method, device and equipment for distinguishing network types |
| US10993116B2 (en) | 2016-02-19 | 2021-04-27 | Baicells Technologies Co. Ltd. | Network differentiation method, device and chip, and user equipment |
| WO2017185270A1 (en) * | 2016-04-27 | 2017-11-02 | Qualcomm Incorporated | Network camp on for multi-sim devices |
| CN109417756A (en) * | 2016-04-27 | 2019-03-01 | 高通股份有限公司 | Network for more SIM devices preempts |
| CN109155967A (en) * | 2016-05-20 | 2019-01-04 | 瑞典爱立信有限公司 | RAT selection in bimodulus transceiver |
| WO2021207996A1 (en) * | 2020-04-16 | 2021-10-21 | Qualcomm Incorporated | Method to speed up 5gnr sa network register for dual-sim device during roaming |
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Application publication date: 20130320 |