CN105792321A - Terminal and access attempt method and device thereof - Google Patents
Terminal and access attempt method and device thereof Download PDFInfo
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- CN105792321A CN105792321A CN201410832115.7A CN201410832115A CN105792321A CN 105792321 A CN105792321 A CN 105792321A CN 201410832115 A CN201410832115 A CN 201410832115A CN 105792321 A CN105792321 A CN 105792321A
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Abstract
The invention discloses an access attempt method of a terminal. The access attempt method comprises the following steps: acquiring a frequency band range supported by the terminal; acquiring an E-UTRA absolute radio frequency channel number (EARFCN) of a cell; converting the EARFCN of the cell into actual frequency information when the EARFCN of the cell is not matched with the EARFCN supported by the terminal; and determining that the terminal can perform a subsequent access operation when the actual frequency information falls into the frequency band range supported by the terminal. The invention also discloses a terminal and an access attempt device thereof at the same time.
Description
Technical field
The present invention relates to Long Term Evolution (LTE) system regions, particularly relate to a kind of terminal and access attempts method, device.
Background technology
In current 3GPP standard, the LTE frequency range of regulation is comparatively disperseed, and from hundreds of megahertz to 3.5GHz not etc., disunity is disposed for the frequency range of LTE system in every country and area.In multiple frequency ranges of regulation divide, there is the situation that same section of frequency spectrum is divided into multiple frequency spectrum that overlaps each other.Band41 (2496-2690MHz) frequency range of such as TD-LTE has completely included the Band38 (2570-2620MHz) of TD-LTE, and for overlapping portions of the spectrum, every country uses different frequency range numberings with area, namely terminal is when searching net, different Long Term Evolutions Radio Access Network Absolute Radio channel number (E-UTRAAbsoluteRadioFrequencyChannelNumber, EARFCN) can be translated into for identical frequency range.This phenomenon not only exists in TD-LTE, FDDLTE is also kindred circumstances, for instance FDDLTEBand25 (up: 1850-1915MHz is descending: 1930-1995) and Band2 (up: 1850-1910MHz is descending: 1930-1990) etc..
Therefore there is a kind of situation, although network adopts identical wavelength coverage to drop into row covering, due to the same frequency spectrum of terminal None-identified different frequency range numbering, cause that terminal cannot access normal in the middle of the frequency spectrum that hardware has originally been supported use.For this problem, for being defined as the overlapping frequency spectrum of different frequency range in international standard, existing solution mainly has two class kind schemes:
Scheme one: increase terminal frequency range；
Scheme two: increase multiband flag in the broadcast of network.
But, scheme one cannot thoroughly solve this problem, this is because along with the increase of frequency range definition, all frequency ranges defined for 3GPP cannot all be supported by terminal；And scheme two needs to carry out the network rebuilding thoroughly, because whether terminal has access to depend on the broadcast of network side, it is necessary to base station is transformed.Even supporting the terminal of this technology, under the base station network not supporting this technology, still can not normally access.
Summary of the invention
For solving the technical problem of existing existence, embodiment of the present invention expectation provides a kind of terminal and access attempts method, device, on the basis that need not network side be transformed, can complete the smooth access that the overlapping frequency spectrum of different frequency range is not distinguished.
The technical scheme of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of access attempts method of terminal, and the method includes:
Obtain the band limits that terminal is supported；
Obtain the Long Term Evolution Radio Access Network Absolute Radio channel number EARFCN of community；
When the EARFCN of described community does not mate with the EARFCN of described terminal support, the EARFCN of described community is converted into the frequency information of reality；
When the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation.
In such scheme, the band limits of described acquisition terminal support includes:
The frequency range number that reading terminals is supported from non-volatile parameter NV；
Described frequency range number is converted into the band information of reality.
In such scheme, the EARFCN of described acquisition community includes:
The frequency that described terminal is supported carries out cell searching；
Arrange the cell information on frequency according to Reference Signal Received Power RSRP, described cell information comprises EARFCN.
In such scheme, after the EARFCN of described community is converted into the frequency information of reality, described method also includes:
Obtain the frequency range number in described cell system broadcast；
Only when the frequency range number of the frequency range number in described cell system broadcast with terminal support differs, just continue to judge whether the frequency information of described reality falls in the band limits that described terminal is supported.
The embodiment of the present invention also provides for the access attempts device of a kind of terminal, it is characterised in that described device includes: frequency range acquisition module, EARFCN acquisition module, frequency acquisition module and determine AM access module；Wherein,
Frequency range acquisition module, for obtaining the band limits that terminal is supported；
EARFCN acquisition module, for obtaining the EARFCN of community；
Frequency acquisition module, for when the EARFCN of described community does not mate with the EARFCN of described terminal support, being converted into the frequency information of reality by the EARFCN of described community；
Determine AM access module, for when the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation.
In such scheme, described frequency range acquisition module includes:
Frequency range number reads unit, for obtaining the frequency range number that terminal self is supported from NV；
Conversion unit, for being converted into the band information of reality by described frequency range number.
In such scheme, described EARFCN acquisition module includes:
Cell search unit, for carrying out cell searching on the frequency that described terminal is supported；
EARFCN acquiring unit, for arranging the cell information on frequency according to Reference Signal Received Power RSRP, comprises EARFCN in described cell information.
In such scheme, described device also includes:
Frequency range comparison module, for obtaining the frequency range number in described cell system broadcast, makes comparisons the frequency range number of the frequency range number in cell system broadcast with terminal support.
The embodiment of the present invention also provides for a kind of terminal, comprises the access attempts device according to any one of such scheme in described terminal.
Terminal that the embodiment of the present invention provides and access attempts method, device, by the frequency of terminal being converted to the frequency information of reality, the frequency range number that community is supported is converted to the spectrum information of reality, thus the smooth access that the overlapping frequency spectrum of different frequency range can not distinguished.
Accompanying drawing explanation
The access attempts method of the terminal that Fig. 1 provides for the embodiment of the present invention realize schematic flow sheet；
The composition structural representation of the access attempts device of the terminal that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention and technical scheme, below in conjunction with drawings and Examples, technical scheme is described in detail, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not paying creative work, broadly fall into the scope of protection of the invention.
The access attempts method of the terminal that Fig. 1 provides for the embodiment of the present invention realize schematic flow sheet, as it is shown in figure 1, the method includes:
Step 101, obtains the band limits that terminal is supported；
Concrete, terminal can obtain, from the non-volatile parameter (NV) of self storage, the frequency range number that terminal self is supported；And then can at the band information that whenever necessary this frequency range number is converted into reality.In embodiment 1, the frequency range number that terminal is supported is Band38, and the band limits of support is 2570-2620MHz.
Step 102, obtains the EARFCN of community；
Concrete, terminal obtains the band information that terminal self is supported in a step 101；Carry out frequency sweep in the environment, select a frequency, this frequency carries out cell searching, arrange the cell information on frequency according to Reference Signal Received Power (RSRP), described cell information comprises EARFCN.These communities select a community, from the cell information of this community, reads the EARFCN of this community.In embodiment 1, it is thus achieved that community EARFCN be 40690.
Step 103, when the EARFCN of described community does not mate with the EARFCN of described terminal support, is converted into the frequency information of reality by the EARFCN of described community；
The community EARFCN (such as: 40690) obtained in step 102 is mated with the EARFCN of terminal support, if coupling (namely exists 40690) in the EARFCN that terminal is supported, then carry out follow-up access process according to 3GPP normal process；If not mating (being namely absent from 40690 in the EARFCN of terminal support), according to original 3GPP (before R8 version) standard in prior art, the access attempts that terminal will select next frequency to carry out a new round, and in the present invention, terminal does not now abandon the access attempts on former frequency, but the frequency information (such as: 2600MHz) that described EARFCN is converted into reality is standby.The frequency information that EARFCN is converted into reality is the ability that existing terminal has possessed.In embodiment 1, the frequency range number supported due to terminal is Band38, and EARFCN corresponding for 2600MHz in Band38 is 38050, therefore, is absent from 40690 in the EARFCN of terminal support.
Step 104, when the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation；
As described in step 103, terminal access attempts, now, the band limits (2570-2620MHz that Band38 is corresponding) that the actual frequency information (2600MHz) corresponding for community EARFCN obtained in step 103 is supported with terminal can be compared by terminal, if actual frequency information corresponding for community EARFCN falls in the band limits that terminal is supported, then judge that terminal is really to have the ability to access this community, even if the EARFCN of this community (40690) is not identified by terminal；Then, it is determined that described terminal can carry out follow-up access operation.
Further, in order to judge whether terminal supports described community as early as possible, terminal can obtain, in the system broadcast message of Xian Conggai community, the frequency range number that this community is supported.Concrete, terminal can synchronize described community, and then the system broadcast message of this community can be obtained, generally, after terminal parses Master Information Block (MIB) message from Physical Broadcast Channel (PBCH), then receive system information block (SIB) message from physical down link sharing channel (PDSCH), the frequency range number (frequency range number that in embodiment 1, community is supported is Band41) supported this community can be read from SIB message.The frequency range number (Band38) that the frequency range number (Band41) that this community is supported by terminal is supported with self compares；When the two differs, illustrate that the actual corresponding frequency (2600MHz) of EARFCN (40690) of community its is possible to drop in the band limits that terminal self is supported, if the two is identical, then the band limits of actual for the EARFCN (40690) of community corresponding frequency (2600MHz) with terminal support need not be compared, also deducibility terminal can not access this community at current frequency, thus abandoning the access attempts for this community as early as possible, carry out new round access attempts.This is because the actual frequency values corresponding for different EARFCN of different frequency range is likely to be identical, but the actual frequency values corresponding for different EARFCN of similar frequency bands is necessarily different, above-mentioned steps 3 having determined that, the EARFCN of described community does not mate with the EARFCN of described terminal support, therefore, if the community frequency range number got is identical with the frequency range number that terminal is supported, then illustrate that terminal necessarily can not access this community at current frequency.
Fig. 2 is the composition structural representation of access attempts device of the terminal that the embodiment of the present invention provides, as in figure 2 it is shown, this access attempts device includes: frequency range acquisition module 201, EARFCN acquisition module 202, frequency acquisition module 203, determine AM access module 204；Wherein,
Frequency acquisition module 201, for obtaining the band limits that terminal is supported；
EARFCN acquisition module 202, for obtaining the EARFCN of community；
Frequency acquisition module 203, for when the EARFCN of described community does not mate with the EARFCN of described terminal support, being converted into the frequency information of reality by the EARFCN of described community；
Determine AM access module 204, for when the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation.
Further, in above-mentioned access attempts device, described frequency range acquisition module 201 includes:
Frequency range number reads unit, for obtaining the frequency range number that terminal self is supported from NV；
Conversion unit, for being converted into the band information of reality by described frequency range number.
Further, in above-mentioned access attempts device, described EARFCN acquisition module 202 includes:
Cell search unit, for carrying out cell searching on the frequency that described terminal is supported；
EARFCN acquiring unit, for arranging the cell information on frequency according to Reference Signal Received Power RSRP, comprises EARFCN in described cell information.
Further, in above-mentioned access attempts device, may also include that
Frequency range comparison module, for obtaining the frequency range number in described cell system broadcast, makes comparisons the frequency range number of the frequency range number in cell system broadcast with terminal support.
Above-mentioned modules and unit in actual applications, all can be realized by being positioned at the central processing unit (CPU) of terminal, microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA).
The embodiment of the present invention also provides for a kind of terminal, comprises any one access attempts device above-mentioned in this terminal.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of hardware embodiment, software implementation or the embodiment in conjunction with software and hardware aspect.And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory and optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe.It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.
Claims (9)
1. the access attempts method of a terminal, it is characterised in that described method includes:
Obtain the band limits that terminal is supported；
Obtain the Long Term Evolution Radio Access Network Absolute Radio channel number EARFCN of community；
When the EARFCN of described community does not mate with the EARFCN of described terminal support, the EARFCN of described community is converted into the frequency information of reality；
When the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation.
2. access attempts method according to claim 1, it is characterised in that the band limits of described acquisition terminal support includes:
The frequency range number that reading terminals is supported from non-volatile parameter NV；
Described frequency range number is converted into the band information of reality.
3. access attempts method according to claim 1, it is characterised in that the EARFCN of described acquisition community includes:
The frequency that described terminal is supported carries out cell searching；
Arrange the cell information on frequency according to Reference Signal Received Power RSRP, described cell information comprises EARFCN.
4. access attempts method according to claim 1, it is characterised in that after the EARFCN of described community is converted into the frequency information of reality, described method also includes:
Obtain the frequency range number in described cell system broadcast；
Only when the frequency range number of the frequency range number in described cell system broadcast with terminal support differs, just continue to judge whether the frequency information of described reality falls in the band limits that described terminal is supported.
5. the access attempts device of a terminal, it is characterised in that described device includes: frequency range acquisition module, EARFCN acquisition module, frequency acquisition module and determine AM access module；Wherein,
Frequency range acquisition module, for obtaining the band limits that terminal is supported；
EARFCN acquisition module, for obtaining the EARFCN of community；
Frequency acquisition module, for when the EARFCN of described community does not mate with the EARFCN of described terminal support, being converted into the frequency information of reality by the EARFCN of described community；
Determine AM access module, for when the frequency information of described reality falls in the band limits that described terminal is supported, it is determined that described terminal can carry out follow-up access operation.
6. access attempts device according to claim 5, it is characterised in that described frequency range acquisition module includes:
Frequency range number reads unit, for obtaining the frequency range number that terminal self is supported from NV；
Conversion unit, for being converted into the band information of reality by described frequency range number.
7. access attempts device according to claim 5, it is characterised in that described EARFCN acquisition module includes:
Cell search unit, for carrying out cell searching on the frequency that described terminal is supported；
EARFCN acquiring unit, for arranging the cell information on frequency according to Reference Signal Received Power RSRP, comprises EARFCN in described cell information.
8. access attempts device according to claim 5, it is characterised in that described device also includes:
Frequency range comparison module, for obtaining the frequency range number in described cell system broadcast, makes comparisons the frequency range number of the frequency range number in cell system broadcast with terminal support.
9. a terminal, it is characterised in that comprise the access attempts device described in any one of claim 5 to 8 in described terminal.
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| CN201410832115.7A CN105792321B (en) | 2014-12-26 | 2014-12-26 | A kind of terminal and its access attempts method, apparatus |
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| CN201410832115.7A CN105792321B (en) | 2014-12-26 | 2014-12-26 | A kind of terminal and its access attempts method, apparatus |
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| CN109997380A (en) * | 2016-11-30 | 2019-07-09 | 华为技术有限公司 | Business indicating means and base station, terminal and system |
| CN114980271A (en) * | 2022-05-20 | 2022-08-30 | 维沃移动通信有限公司 | Cell registration method and terminal |
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| CN105792321B (en) | 2019-03-12 |
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