CN105792321B - A kind of terminal and its access attempts method, apparatus - Google Patents
A kind of terminal and its access attempts method, apparatus Download PDFInfo
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- CN105792321B CN105792321B CN201410832115.7A CN201410832115A CN105792321B CN 105792321 B CN105792321 B CN 105792321B CN 201410832115 A CN201410832115 A CN 201410832115A CN 105792321 B CN105792321 B CN 105792321B
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Abstract
The invention discloses a kind of access attempts methods of terminal, comprising: obtains the band limits that terminal is supported；Obtain the long term evolution Radio Access Network Absolute Radio channel number (EARFCN) of cell；When the EARFCN that the EARFCN of the cell and the terminal are supported is mismatched, actual frequency information is converted by the EARFCN of the cell；When the actual frequency information is fallen into the band limits that the terminal is supported, determine that the terminal can carry out subsequent access operation.The present invention further simultaneously discloses a kind of terminal and its access attempts device.
Description
Technical field
The present invention relates to long term evolution (LTE) system regions more particularly to a kind of terminals and its access attempts method, dress
It sets.
Background technique
LTE frequency range specified in 3GPP standard is more dispersed at present, from several hundred megahertzs to 3.5GHz etc., every country
Disunity is disposed with frequency range of the area for LTE system.In defined multiple frequency ranges divide, exists and same section of frequency spectrum is divided
For it is multiple overlap each other frequency spectrum the case where.Such as Band41 (2496-2690MHz) frequency range of TD-LTE has completely included TD-LTE
Band38 (2570-2620MHz), and for the portions of the spectrum of overlapping, every country and area are numbered using different frequency ranges,
That is terminal can translate into identical frequency range different long term evolution Radio Access Network Absolute Radio channels when searching net
Number (E-UTRA Absolute Radio Frequency Channel Number, EARFCN).This phenomenon is not only in TD-
Exist in LTE, in FDD LTE be also kindred circumstances, such as FDD LTE Band25 (uplink: 1850-1915MHz downlink:
1930-1995) and Band2 (uplink: 1850-1910MHz downlink: 1930-1990) etc..
Therefore there are a kind of situations, although network drops into capable covering using identical wavelength coverage, since terminal can not identify
The same frequency spectrum of different frequency range number, causes terminal that can not access normal use in the frequency spectrum that hardware has originally been supported.For this
ー problem, for being defined as the overlapping frequency spectrum of different frequency range in international standard, existing solution there are two main classes kind scheme:
Scheme one: increase terminal frequency range；
Scheme two: increase multiband marker in the broadcast message of network.
But scheme one can not thoroughly solve the problems, such as this, this is because the increase defined with frequency range, terminal can not be incited somebody to action
On all frequency ranges defined in 3GPP are all supported；And scheme two needs to carry out the thorough network rebuilding, because whether terminal can
Enough accesses depend on the broadcast message of network side, need to be transformed base station.Even supporting the terminal of the technology, do not propping up
It holds under the base station network of the technology, still cannot normally access.
Summary of the invention
To solve existing technical problem, an embodiment of the present invention is intended to provide a kind of terminal and its access attempts sides
Method, device can be completed not distinguishing the overlapping frequency spectrum of different frequency range on the basis of not needing to be transformed network side
Smoothly access.
The technical solution 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, this method comprises:
Obtain the band limits that terminal is supported；
Obtain the long term evolution Radio Access Network Absolute Radio channel number EARFCN of cell；
When the EARFCN that the EARFCN of the cell and the terminal are supported is mismatched, the EARFCN of the cell is turned
Turn to actual frequency information；
When the actual frequency information is fallen into the band limits that the terminal is supported, determine that the terminal can be into
The subsequent access operation of row.
In above scheme, the band limits for obtaining terminal support includes:
The frequency range number that reading terminals are supported from non-volatile parameter NV；
Actual band information is converted by the frequency range number.
In above scheme, the EARFCN for obtaining cell includes:
Cell searching is carried out on the frequency point that the terminal is supported；
The cell information on frequency point is arranged according to Reference Signal Received Power RSRP, includes in the cell information
EARFCN。
In above scheme, after converting actual frequency information for the EARFCN of the cell, the method is also wrapped
It includes:
Obtain the frequency range number in the cell system broadcast message；
Only when the frequency range number and the not identical frequency range number supported of terminal in cell system broadcast message, just continuation
Judge whether the actual frequency information falls into the band limits that the terminal is supported.
The embodiment of the present invention also provides a kind of access attempts device of terminal, which is characterized in that described device includes: frequency range
It obtains module, EARFCN acquisition module, frequency acquisition module and determines AM access module；Wherein,
Frequency range obtains module, for obtaining the band limits of terminal support；
EARFCN obtains module, for obtaining the EARFCN of cell；
Frequency acquisition module will when the EARFCN for supporting as the EARFCN of the cell with the terminal is mismatched
The EARFCN of the cell is converted into actual frequency information；
Determine AM access module, when in the band limits for falling into the terminal support when the actual frequency information,
Determine that the terminal is able to carry out subsequent access operation.
In above scheme, the frequency range obtains module and includes:
Frequency range reading unit, the frequency range number supported for obtaining terminal itself from NV；
Conversion unit, for converting actual band information for the frequency range number.
In above scheme, the EARFCN obtains module and includes:
Cell search unit, for carrying out cell searching on the frequency point that the terminal is supported；
EARFCN acquiring unit, it is described for arranging the cell information on frequency point according to Reference Signal Received Power RSRP
It include EARFCN in cell information.
In above scheme, described device further include:
Frequency range comparison module broadcasts cell system for obtaining the frequency range number in the cell system broadcast message
Frequency range number in message is made comparisons with the frequency range number that terminal is supported.
The embodiment of the present invention also provides a kind of terminal, tastes in the terminal comprising access described in any one of above scheme
Trial assembly is set.
Terminal provided by the embodiment of the present invention and its access attempts method, apparatus, by being converted to the frequency point of terminal
The frequency range number that cell is supported is converted to actual spectrum information, so as to the overlapping to different frequency range by actual frequency information
The smooth access that frequency spectrum does not distinguish.
Detailed description of the invention
Fig. 1 is the implementation process schematic diagram of the access attempts method of terminal provided in an embodiment of the present invention；
Fig. 2 is the composed structure schematic diagram of the access attempts device of terminal provided in an embodiment of the present invention.
Specific embodiment
In order to illustrate the embodiments of the present invention more clearly and technical solution, below in conjunction with accompanying drawings and embodiments to the present invention
Technical solution be described in detail, it is clear that described embodiment is a part of the embodiments of the present invention, rather than complete
Portion's embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is the implementation process schematic diagram of the access attempts method of terminal provided in an embodiment of the present invention, as shown in Figure 1,
This method comprises:
Step 101, the band limits that terminal is supported is obtained；
Specifically, terminal can obtain the frequency range number that terminal itself is supported from the non-volatile parameter (NV) that itself is stored；
And then actual band information can be being converted by the frequency range number whenever necessary.In embodiment 1, the frequency range number of terminal support is
Band38, the band limits of support are 2570-2620MHz.
Step 102, the EARFCN of cell is obtained；
Specifically, terminal obtains the band information of terminal itself support in a step 101；Frequency sweep is carried out in the environment,
A frequency point is selected, cell searching is carried out on the frequency point, is arranged according to Reference Signal Received Power (RSRP) small on frequency point
Area's information includes EARFCN in the cell information.A cell is selected in these cells, from the cell information of the cell
Read the EARFCN of the cell.In embodiment 1, the cell EARFCN of acquisition is 40690.
Step 103, when the EARFCN that the EARFCN of the cell and the terminal are supported is mismatched, by the cell
EARFCN is converted into actual frequency information；
By the cell EARFCN obtained in step 102 (such as: 40690) with terminal support EARFCN match, such as
Fruit matching (i.e. there are 40690 in the EARFCN that terminal is supported), then carry out subsequent access processing according to 3GPP normal process；Such as
Fruit mismatches and (40690 is not present in the EARFCN that terminal is supported), in the prior art according to original 3GPP (version before R8
This) standard, the access attempts that terminal will select next frequency point to carry out a new round, and in the present invention, terminal is not abandoned at this time
Access attempts on former frequency point, but by the EARFCN be converted into actual frequency information (such as: it is 2600MHz) spare.It will
It is the ability that existing terminal has had that EARFCN, which is converted into actual frequency information,.In embodiment 1, due to the frequency of terminal support
Segment number is Band38, and the corresponding EARFCN of 2600MHz is 38050 in Band38, therefore, in the EARFCN that terminal is supported not
There are 40690.
Step 104, when the actual frequency information is fallen into the band limits that the terminal is supported, the end is determined
End is able to carry out subsequent access operation；
As described in step 103, terminal access attempts, at this point, terminal can be by EARFCN pairs of cell obtained in step 103
The actual frequency information (2600MHz) answered and band limits that terminal is supported (Band38 corresponding 2570-2620MHz) are compared
Compared with, if the corresponding actual frequency information of cell EARFCN fall into terminal support band limits in, judge that terminal is really
It has the ability to access the cell, even if the EARFCN (40690) of the cell is not identified by terminal；Then, the terminal is determined
It is able to carry out subsequent access operation.
Further, in order to judge whether terminal supports that the cell, terminal can be first wide from the system of the cell as early as possible
Broadcast the frequency range number that cell support is obtained in message.Specifically, terminal can synchronize the cell, and then can obtain the cell is
System broadcast message, generally, after terminal parses Master Information Block (MIB) message from Physical Broadcast Channel (PBCH), then from physics
Downlink sharied signal channel (PDSCH) receives system information block (SIB) message, and cell support can be read from SIB message
Frequency range number (frequency range number that in embodiment 1, cell is supported is Band41).The frequency range number (Band41) that terminal supports the cell
The frequency range number (Band38) supported with itself compares；When the two is not identical, illustrate that the EARFCN (40690) of cell is practical right
The frequency (2600MHz) answered is possible to fall in the band limits of terminal itself support, need not will be small if the two is identical
The band limits that the practical corresponding frequency (2600MHz) of the EARFCN (40690) in area is supported with terminal compares, and also deducibility is whole
End cannot access the cell in current frequency point, to abandon the access attempts for the cell as early as possible, carry out new round access and taste
Examination.This is because the corresponding actual frequency values of different EARFCN of different frequency range are likely to be identical, but similar frequency bands are not
It is necessarily different with the corresponding actual frequency values of EARFCN, had determined that in above-mentioned steps 3 EARFCN of the cell with
The EARFCN that the terminal is supported is mismatched, therefore, if the cell frequency range number got is identical as the frequency range number that terminal is supported,
Then illustrate that terminal centainly cannot access the cell in current frequency point.
Fig. 2 is the composed structure schematic diagram of the access attempts device of terminal provided in an embodiment of the present invention, as shown in Fig. 2,
The access attempts device includes: that frequency range obtains module 201, EARFCN obtains module 202, frequency acquisition module 203, determines access
Module 204；Wherein,
Frequency range obtains module 201, for obtaining the band limits of terminal support；
EARFCN obtains module 202, for obtaining the EARFCN of cell；
Frequency acquisition module 203, when the EARFCN for supporting as the EARFCN of the cell with the terminal is mismatched,
Actual frequency information is converted by the EARFCN of the cell；
AM access module 204 is determined, for falling into the band limits that the terminal is supported when the actual frequency information
When, determine that the terminal is able to carry out subsequent access operation.
Further, in above-mentioned access attempts device, the frequency range obtains module 201 and includes:
Frequency range reading unit, the frequency range number supported for obtaining terminal itself from NV；
Conversion unit, for converting actual band information for the frequency range number.
Further, in above-mentioned access attempts device, the EARFCN obtains module 202 and includes:
Cell search unit, for carrying out cell searching on the frequency point that the terminal is supported；
EARFCN acquiring unit, it is described for arranging the cell information on frequency point according to Reference Signal Received Power RSRP
It include EARFCN in cell information.
Further, in above-mentioned access attempts device, may also include that
Frequency range comparison module broadcasts cell system for obtaining the frequency range number in the cell system broadcast message
Frequency range number in message is made comparisons with the frequency range number that terminal is supported.
Above-mentioned modules and each unit in practical applications, can be by being located at the central processing unit (CPU), micro- of terminal
Processor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) are realized.
The embodiment of the present invention also provides a kind of terminal, includes any one of the above access attempts device in the terminal.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention, which can be used, can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (9)
1. a kind of access attempts method of terminal, which is characterized in that the 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 cell；
When the EARFCN that the EARFCN of the cell and the terminal are supported is mismatched, convert the EARFCN of the cell to
Actual frequency information；
When the actual frequency information is fallen into the band limits that the terminal is supported, after determining that the terminal is able to carry out
Continuous access operation.
2. access attempts method according to claim 1, which is characterized in that the band limits packet for obtaining terminal and supporting
It includes:
The frequency range number that reading terminals are supported from non-volatile parameter NV；
Actual band information is converted by the frequency range number.
3. access attempts method according to claim 1, which is characterized in that it is described obtain cell EARFCN include:
Cell searching is carried out on the frequency point that the terminal is supported；
The cell information on frequency point is arranged according to Reference Signal Received Power RSRP, includes EARFCN in the cell information.
4. access attempts method according to claim 1, which is characterized in that converting reality for the EARFCN of the cell
After the frequency information on border, the method also includes:
Obtain the frequency range number in the cell system broadcast message；
Only when the frequency range number that frequency range number and the terminal in cell system broadcast message are supported is not identical, just continue to judge
Whether the actual frequency information falls into the band limits that the terminal is supported.
5. a kind of access attempts device of terminal, which is characterized in that described device includes: that frequency range obtains module, EARFCN is obtained
Module, frequency acquisition module and determining AM access module；Wherein,
Frequency range obtains module, for obtaining the band limits of terminal support；
EARFCN obtains module, for obtaining the EARFCN of cell；
Frequency acquisition module will be described when the EARFCN for supporting as the EARFCN of the cell with the terminal is mismatched
The EARFCN of cell is converted into actual frequency information；
AM access module is determined, for determining when the actual frequency information is fallen into the band limits that the terminal is supported
The terminal is able to carry out subsequent access operation.
6. access attempts device according to claim 5, which is characterized in that the frequency range obtains module and includes:
Frequency range reading unit, the frequency range number supported for obtaining terminal itself from NV；
Conversion unit, for converting actual band information for the frequency range number.
7. access attempts device according to claim 5, which is characterized in that the EARFCN obtains module and includes:
Cell search unit, for carrying out cell searching on the frequency point that the terminal is supported；
EARFCN acquiring unit, for arranging the cell information on frequency point, the cell according to Reference Signal Received Power RSRP
It include EARFCN in information.
8. access attempts device according to claim 5, which is characterized in that described device further include:
Frequency range comparison module broadcasts the message cell system for obtaining the frequency range number in the cell system broadcast message
In frequency range number make comparisons with the frequency range number that terminal is supported.
9. a kind of terminal, which is characterized in that include the described in any item access attempts devices of claim 5 to 8 in the 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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| CN105792321A CN105792321A (en) | 2016-07-20 |
| CN105792321B true CN105792321B (en) | 2019-03-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018098764A1 (en) | 2016-11-30 | 2018-06-07 | 华为技术有限公司 | Service indication method, base station, terminal, and system |
| CN109068373B (en) * | 2018-09-11 | 2020-09-08 | 武汉虹信通信技术有限责任公司 | Method and device for acquiring public network cell information |
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| CN102625341A (en) * | 2012-03-19 | 2012-08-01 | 北京六捷科技有限公司 | Device and method for performing interference detection on global system for mobile communications for railways (GSM-R) |
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| WO2006134449A2 (en) * | 2005-06-13 | 2006-12-21 | Nokia Corporation | Method, apparatus and computer program product to optimize information provision in mbms neighboring cell information (mnci) message |
| CN101166346A (en) * | 2006-10-18 | 2008-04-23 | 鼎桥通信技术有限公司 | Method and device for informing user equipment of auxiliary carrier frequency point information |
| CN102595465A (en) * | 2011-01-10 | 2012-07-18 | 中兴通讯股份有限公司 | Method and system realizing interference information reporting, and UE |
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