CN108616935A - It is switched fast the method, device and mobile terminal of frequency point - Google Patents
It is switched fast the method, device and mobile terminal of frequency point Download PDFInfo
- Publication number
- CN108616935A CN108616935A CN201611129378.7A CN201611129378A CN108616935A CN 108616935 A CN108616935 A CN 108616935A CN 201611129378 A CN201611129378 A CN 201611129378A CN 108616935 A CN108616935 A CN 108616935A
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- China
- Prior art keywords
- frequency point
- point number
- system message
- cell
- switched fast
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
Abstract
The present invention provides a kind of method, device and mobile terminal being switched fast frequency point.The method includes：The first system message that cell place base station is sent is received after searching cell；The first system message is parsed；The second system message that base station where receiving the cell after the first system message successfully resolved is sent；The second system message is parsed, the second system message includes MFBI instructions and corresponding frequency point number；When MFBI instruction displays need to switch frequency point number, switches current frequency point number to the corresponding frequency point number, otherwise keep current frequency point number.The present invention can reduce the complexity of frequency handover, it is not easy to malfunction, robustness is good.
Description
Technical field
The present invention relates to network switching technical field more particularly to a kind of method, apparatus being switched fast frequency point and movements
Terminal.
Background technology
LTE (Long Term Evolution, long term evolution) project is the evolution of 3G, and LTE system defines FDD
(Frequency Division Duplex, frequency division duplex) and two kinds of TDD (Time Division Duplex, time division duplex)
Mode, it improves and enhances the aerial access technology of 3G, using OFDM (Orthogonal Frequency Division
Multiplexing, orthogonal frequency division multiplexing) and MIMO (Multiple-Input Multiple-Output, multiple-input, multiple-output) technology
Sole criterion as its wireless network evolution.
TDD LTE frequency ranges are respectively divided at home to three operators, Band38 ranges：2570-2619.9MHz being to draw
To middle movement, corresponding frequency point number is 37750-38249.Band41 is a big frequency range, contains the frequency of Band38, range
It is：2496-2690MHz.But movement has been given in the inside in addition to Band38, also other several sections have been given movement, unicom and electricity respectively
Letter, is unicom respectively：2535~2575MHz, it is mobile：2575~2635MHz, corresponding frequency point number is 40440-41040, telecommunications
2635~2655MHz.
It is to overlap that band38 the and band41 frequency ranges of middle movement, which have part, in order to which some only support band41, without propping up
The mobile phone of band38 is held, can be resident on a frequency point cell band38 or some only support band38 without branch band41
Mobile phone can be resident a frequency point cell band41, middle movement devises the strategy of multiband instruction.Frequency point number is placed on
It is broadcasted in sib1.Although frequency is the same, frequency point number is different, and terminal baseband system is all to carry out work according to frequency point number
Make, so terminal must quickly switch frequency point number after solution to sib1, the purpose for the access cell that hits pay dirk.
If the frequency of cell is the frequency of a band38 and band40 overlappings needs root after terminal solution to sib1
The frequency point number that entire baseband system is updated according to the frequency point number in sib1, the module being related to is relatively more, including radio-frequency module, cell
Search module, measurement module etc..Common practice is to be accused new frequency point number by increasing a particular message in the prior art
Tell each module, each self refresh processing of each module.
In the implementation of the present invention, inventor has found at least to have the following technical problems in the prior art：
It is in the prior art by increase a particular message, tell the mode of each module to increase new frequency point number
Size of code and complexity, make the robustness of whole system be deteriorated.
Invention content
The present invention provides a kind of method, device and mobile terminal being switched fast frequency point, can reduce answering for frequency handover
Miscellaneous degree, it is not easy to malfunction, robustness is good.
In a first aspect, the present invention provides a kind of method being switched fast frequency point, the method includes：
The first system message that base station where receiving the cell after searching cell is sent；
The first system message is parsed；
The second system message that base station where receiving the cell after the first system message successfully resolved is sent；
The second system message is parsed, the second system message includes MFBI (Multi frequency
Band indicator, overlapping frequency spectrum mutually identify) indicate and correspond to frequency point number；
When MFBI instruction displays need to switch frequency point number, switch current frequency point number to the corresponding frequency point number, it is no
Then keep current frequency point number.
Optionally, when MFBI instruction displays need to switch frequency point number, switch current frequency point number to the corresponding frequency
Period includes：
Handover request is sent to physical layer by wireless chain control layer so that the current frequency point number of physical layer is switched to described
Corresponding frequency point number.
Optionally, in the handover request, frequency point number changes, and cell ID is constant.
Optionally, the first system message is MIB, and the second system message is SIB1.
Second aspect, the present invention provide a kind of device being switched fast frequency point, and described device includes：
First receiving unit, the first system sent for base station where receiving the cell after searching cell disappear
Breath；
First resolution unit, for being parsed to the first system message；
Second receiving unit is sent for base station where receiving the cell after the first system message successfully resolved
Second system message；
Second resolution unit, for being parsed to the second system message, the second system message includes MFBI
Instruction and corresponding frequency point number；
Switch unit, for when MFBI instruction displays need to switch frequency point number, switching current frequency point number to described
Corresponding frequency point number, otherwise keeps current frequency point number.
Optionally, the switch unit, for sending handover request to physical layer by wireless chain control layer so that physics
The current frequency point number of layer is switched to the corresponding frequency point number.
Optionally, in the handover request, frequency point number changes, and cell ID is constant.
Optionally, the first system message is MIB, and the second system message is SIB1.
The third aspect, the present invention provide a kind of mobile terminal, and the mobile terminal includes described above is switched fast frequently
The device of point.
The method, device and mobile terminal provided in an embodiment of the present invention for being switched fast frequency point, in terminal access procedure,
It when having solved mib message and solving sib1 message again, is indicated according to the MFBI of sib1, walks the flow of similar cell switching, terminal passes through small
The switching method of the constant frequency point number variations of area id quickly updates frequency point number, cell is accessed, to reduce complexity.Because cell is cut
Change of current journey is the most basic flow of terminal, is multiplexed that this flow is not only simple but also do not allow error-prone, and robustness is good.
Description of the drawings
Fig. 1 is the flow chart for the method that one embodiment of the invention is switched fast frequency point；
Fig. 2 is the flow chart that existing terminal accesses cell；
Fig. 3 is the flow chart of terminal access cell when being switched fast the method for frequency point using one embodiment of the invention；
Fig. 4 is the structural schematic diagram for the device that one embodiment of the invention is switched fast frequency point.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of method being switched fast frequency point, as shown in Figure 1, the method includes：
S11, the first system message that cell place base station is sent is received after searching cell；
S12, the first system message is parsed；
S13, the second system that cell place base station transmission is received after the first system message successfully resolved disappear
Breath；
S14, the second system message is parsed, the second system message includes MFBI instructions and corresponding frequency point
Number；
S15, when the MFBI instruction display need switch frequency point number when, switch current frequency point number to the corresponding frequency point
Number, otherwise keep current frequency point number.
The method provided in an embodiment of the present invention for being switched fast frequency point has solved mib message and has solved again in terminal access procedure
It when sib1 message, is indicated according to the MFBI of sib1, walk the flow of similar cell switching, terminal is become by the constant frequency point numbers of cell i d
The switching method of change quickly updates frequency point number, cell is accessed, to reduce complexity.Because cell switching flow is terminal most base
This flow, is multiplexed that this flow is not only simple but also do not allow error-prone, and robustness is good.
Optionally, when MFBI instruction displays need to switch frequency point number, switch current frequency point number to the corresponding frequency
Period includes：
Handover request is sent to physical layer by wireless chain control layer so that the current frequency point number of physical layer is switched to described
Corresponding frequency point number.
Optionally, in the handover request, frequency point number changes, and cell ID is constant.
Optionally, the first system message is MIB, and the second system message is SIB1.
The structural schematic diagram of existing terminal access cell is as shown in Fig. 2, wherein LTE base band is located at user in LTE system
Physical layer in plane protocol, upper layer therein are located at wireless chain control layer RLC.Upper layer sends out the order of frequency sweep, LTE base band
Frequency sweep processing is carried out, finds suitable Base Transmitter frequency and frequency point, and the candidate frequency point that frequency sweep obtains is reported.Upper layer is sent out
According to the order for reporting frequency point to carry out cell searching, LTE base band carries out the processing of cell searching, is reported most after the completion of cell searching
Strong cell.Upper layer sends out the order of solution mib system messages, is reported after the success of LTE base band solution mib message.Upper layer sends out solution
The order of sib system messages reports after the success of LTE base band solution sib message, and subsequent upper layer sends out the order for accessing the cell.
In the case of the overlapping region that a certain frequency point is in two frequency ranges, i.e. a frequency, but there are two frequency bins
In the case of number, the switching for carrying out frequency point number is needed, needs to be switched fast frequency using one kind provided in an embodiment of the present invention at this time
The method of point needs to increase MFBI instructions.Specific flow is as shown in figure 3, its flow is also：Upper layer sends out the order of frequency sweep,
LTE base band carries out frequency sweep processing, finds suitable Base Transmitter frequency and frequency point, and the candidate frequency point that frequency sweep obtains is reported.
Upper layer is sent out according to the order for reporting frequency point to carry out cell searching, and LTE base band carries out the processing of cell searching, and cell searching is completed
After report most strong cell.Upper layer sends out the order of solution mib system messages, is reported after the success of LTE base band solution mib message.On
Layer sends out the order of solution sib system messages, is reported after the success of LTE base band solution sib message.Maximum difference is to solve as sib1
After successfully reporting, sib1 includes MFBI instructions and corresponding frequency point number, and upper layer determines that current frequency point is not according to the instruction of MFBI
It is the overlapping frequency point of band38 and band41, if need to update frequency point number.When MFBI indicating bits are 1, illustrate to need to switch
Frequency point number, when MFBI indicating bits are 0, explanation need not switch frequency point number.If you do not need to switching frequency point number, still according to just
Normal flow processing.If necessary to update frequency point, handover request is sent to physical layer by wireless chain control layer so that physical layer
Current frequency point number is switched to the corresponding frequency point number.Only frequency point number is different in handover request and cell i d is the same.Base band DSP
System carries out cell switching according to handover request, after the completion of switching, accesses cell.
The embodiment of the present invention also provides a kind of device being switched fast frequency point, as shown in figure 4, described device includes：
First receiving unit 41, the first system sent for base station where receiving the cell after searching cell disappear
Breath；
First resolution unit 42, for being parsed to the first system message；
Second receiving unit 43, for base station hair where receiving the cell after the first system message successfully resolved
The second system message sent；
Second resolution unit 44, for being parsed to the second system message, the second system message includes
MFBI is indicated and corresponding frequency point number；
Switch unit 45, for when MFBI instruction displays need to switch frequency point number, switching current frequency point number to institute
Corresponding frequency point number is stated, current frequency point number is otherwise kept.
The device provided in an embodiment of the present invention for being switched fast frequency point has solved mib message and has solved again in terminal access procedure
It when sib1 message, is indicated according to the MFBI of sib1, walk the flow of similar cell switching, terminal is changed by the constant frequency points of cell i d
Switching method quickly update frequency point, cell is accessed, to reduce complexity.Because cell switching flow is that terminal is most basic
Flow, is multiplexed that this flow is not only simple but also do not allow error-prone, and robustness is good.
Optionally, the switch unit 45, for sending handover request to physical layer by wireless chain control layer so that object
The current frequency point number of reason layer is switched to the corresponding frequency point number.
Optionally, in the handover request, frequency point number changes, and cell ID is constant.
Optionally, the first system message is MIB, and the second system message is SIB1.
The embodiment of the present invention also provides a kind of mobile terminal, and the mobile terminal includes described above being switched fast frequency point
Device.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (9)
1. a kind of method being switched fast frequency point, which is characterized in that including：
The first system message that base station where receiving the cell after searching cell is sent；
The first system message is parsed；
The second system message that base station where receiving the cell after the first system message successfully resolved is sent；
The second system message is parsed, the second system message includes MFBI instructions and corresponding frequency point number；
When MFBI instruction displays need to switch frequency point number, switches current frequency point number to the corresponding frequency point number, otherwise protect
Hold current frequency point number.
2. the method according to claim 1 for being switched fast frequency point, which is characterized in that when the MFBI indicates that display needs
When switching frequency point number, switching current frequency point number to the corresponding frequency point number includes：
Handover request is sent to physical layer by wireless chain control layer so that the current frequency point number of physical layer is switched to the correspondence
Frequency point number.
3. the method according to claim 2 for being switched fast frequency point, which is characterized in that in the handover request, frequency point
It number changes, cell ID is constant.
4. the method according to claim 3 for being switched fast frequency point, which is characterized in that the first system message is MIB,
The second system message is SIB1.
5. a kind of device being switched fast frequency point, which is characterized in that including：
First receiving unit, the first system message sent for base station where receiving the cell after searching cell；
First resolution unit, for being parsed to the first system message；
Second receiving unit, the sent for base station where receiving the cell after the first system message successfully resolved
Two system message；
Second resolution unit, for being parsed to the second system message, the second system message includes MFBI instructions
And corresponding frequency point number；
Switch unit, for when MFBI instruction displays need to switch frequency point number, switching current frequency point number to the correspondence
Otherwise frequency point number keeps current frequency point number.
6. the device according to claim 5 for being switched fast frequency point, which is characterized in that the switch unit, for by nothing
Wired link control layer sends handover request to physical layer so that the current frequency point number of physical layer is switched to the corresponding frequency point number.
7. the device according to claim 6 for being switched fast frequency point, which is characterized in that in the handover request, frequency point
It number changes, cell ID is constant.
8. the device according to claim 7 for being switched fast frequency point, which is characterized in that the first system message is MIB,
The second system message is SIB1.
9. a kind of mobile terminal, which is characterized in that the mobile terminal includes fast as described in any one of claim 5 to 8
The device of speed switching frequency point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129378.7A CN108616935B (en) | 2016-12-09 | 2016-12-09 | Method and device for rapidly switching frequency points and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129378.7A CN108616935B (en) | 2016-12-09 | 2016-12-09 | Method and device for rapidly switching frequency points and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108616935A true CN108616935A (en) | 2018-10-02 |
| CN108616935B CN108616935B (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201611129378.7A Active CN108616935B (en) | 2016-12-09 | 2016-12-09 | Method and device for rapidly switching frequency points and mobile terminal |
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Cited By (1)
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| CN116528330A (en) * | 2023-07-05 | 2023-08-01 | Tcl通讯科技（成都）有限公司 | Equipment network access method and device, electronic equipment and computer readable storage medium |
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| Publication number | Publication date |
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| CN108616935B (en) | 2020-07-21 |
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