CN104185229B - A kind of method and system of search network - Google Patents
A kind of method and system of search network Download PDFInfo
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- CN104185229B CN104185229B CN201310202455.7A CN201310202455A CN104185229B CN 104185229 B CN104185229 B CN 104185229B CN 201310202455 A CN201310202455 A CN 201310202455A CN 104185229 B CN104185229 B CN 104185229B
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Abstract
The present invention proposes a kind of method and system of search network.When LTE/GSM double-module terminal start-ups, start GSM network search；After searching GSM network, it is registered to GSM network；LTE/GSM dual-mode terminals obtain the frequency information of LTE network adjacent cell from the GSM network of registration；Start LTE network search process according to the LTE network adjacent cell frequency information of acquisition；First applicable LTE network cell is searched, is switched over.The present invention effectively shortens the initial network selection time when the target network of LTE/GSM dual-mode terminals is LTE network.
Description
Technical field
The invention belongs to mobile communication field more particularly to a kind of method and systems of search network.
Background technology
LTE（Long Term Evolution, long term evolution）/GSM（Global System For Mobile
Communication, global mobile communication）When the initial network selection of double-module terminal start-up, if the priority of setting GSM network is high,
Then terminal first search GSM network and it is stationed on a gsm network；If the priority for setting LTE network is high, terminal is preferentially searched
Rope LTE network is simultaneously stationed on an LTE network, but existing LTE terminal priority of registration LTE network.
When the target network of LTE/GSM dual-mode terminals is LTE network, due to LTE network frequency band is more, with wide, both
There is no LTE network adjacent cell frequency information, when the LTE cell informations also not preserved are available, executes initial network selection stream
Journey needs to scan the whole bandwidth for the whole LTE frequency bands supported, takes very long.
E-UTRAN（Evolved Universal Terrestrial Radio Access Network, evolution it is general
Land radio access web）In initial cell selection flow under carrier radio frequency channel unknown situation, LTE/GSM dual-mode terminals are by root
Whole radio-frequency channels that E-UTRAN frequency bands are scanned according to its ability, to find an applicable cell.In each carrier frequency,
LTE/GSM dual-mode terminals only need to search for strongest cell.Once finding applicable cell, the cell is just selected.
Wherein, E-UTRAN and LTE can be general, when emphasizing wireless access network usually using E-UTRAN.
LTE/GSM dual-mode terminals need to start initial ranging network in the case where E-UTRAN carrier radio frequency channels are unknown
Flow scans all radio-frequency channels of whole E-UTRAN frequency bands of its support.There are 26 LTE FDD at present（Frequency
Division Duplex, frequency division duplex）Frequency band and 12 LTE TDD（Time Division Duplex, time division duplex）Frequently
Band, LTE/GSM dual-mode terminals chip can support at least six LTE frequency bands simultaneously.It is initial after LTE/GSM double-module terminal start-ups
When network selection, as international roaming is switched on for the first time, and there is no any LTE network cell frequency information in LTE/GSM dual-mode terminals
In the case of, the whole bandwidth for scanning the whole LTE frequency bands supported is needed, is taken very long.
At present, no the relevant technologies relate to how to solve the problems, such as that the initial network selection time takes longer.
Invention content
The present invention proposes a kind of search network method and system, is LTE nets with the target network in LTE/GSM dual-mode terminals
When network, the initial network selection time is effectively shortened.
According to an aspect of the present invention, a kind of search network method is proposed, including：
Long term evolution（LTE）/ global mobile communication（GSM）When double-module terminal start-up, LTE/GSM dual-mode terminals start GSM
Web search；
After searching GSM network, it is registered to GSM network；
LTE/GSM dual-mode terminals obtain the frequency information of LTE network adjacent cell from the GSM network of registration；
Start LTE network search process according to the adjacent cells the LTE frequency information of acquisition；
First applicable LTE network cell is searched, and is switched over.
In one embodiment of this invention, the method for the search network, wherein the control of LTE/GSM dual-mode terminals is cut
Change to first applicable LTE network cell.
In one embodiment of this invention, the method for the search network, wherein start LTE network search process, packet
It includes：
Search is directly initiated, ignores the priority for the LTE network adjacent cell frequency for including in system message, ignores service
The comparison of the received signal level and search priority thresholding of cell.
In one embodiment of this invention, the method for the search network, wherein GSM network is wide by system message
Broadcast the frequency information of LTE network adjacent cell.
In one embodiment of this invention, the method for the search network, wherein applicable cell refers to LTE/GSM bis-
Mould terminal can be stationed and obtain the cell of normal service.
According to a further aspect of the invention, it is also proposed that a kind of system of search network, including：
Search unit is configured in long term evolution（LTE）/ global mobile communication（GSM）When double-module terminal start-up, start
GSM network is searched for；
Registering unit is configured at after searching GSM network, is registered to GSM network；
Acquiring unit is configured at the frequency information that LTE network adjacent cell is obtained from the GSM network of registration；
Start unit is configured at and starts LTE network search process according to the LTE network adjacent cell frequency information of acquisition；
Switch unit is configured at after searching first applicable LTE network cell, be switched to first it is applicable
LTE network cell.
In one embodiment of this invention, the system of the search network, including：
Switch unit is arranged in LTE/GSM dual-mode terminals, that is, is switched to first by the control of LTE/GSM dual-mode terminals and fits
LTE network cell.
In one embodiment of this invention, the system of the search network, including：
Start unit directly initiates search, ignores the priority for the LTE network adjacent cell frequency for including in system message,
Ignore the comparison of the received signal level and search priority thresholding of serving cell.
In one embodiment of this invention, the system of the search network, including：
GSM network broadcasts the frequency information of LTE network adjacent cell by system message；
Acquiring unit receives the adjacent cell frequency information of LTE network by system message from GSM network.
In one embodiment of this invention, the system of the search network, including：
It refers to the cell that normal service can be stationed and be obtained to LTE/GSM dual-mode terminals to be applicable in cell.
In the present invention, when the target network of LTE/GSM dual-mode terminals is LTE network, it is switched on using GSM network and is initially selected
The net time is switched on short advantage of initial network selection time than LTE network.When being switched on initial network selection, GSM network search, note are executed
Volume receives system message, obtains LTE network adjacent cell frequency information.After obtaining LTE network adjacent cell frequency information,
The priority for ignoring the LTE network adjacent cell frequency for including in system message, ignores the RLA_C of serving cell（Receive signal
Level）With THRESH_priority_search（Search priority thresholding）Comparison, directly using obtain LTE network it is neighbouring
Cell frequency information starts LTE network search process immediately, executes the search and measurement of LTE network adjacent cell, and is searching for
To after first applicable LTE network cell, it is switched to this and is applicable in LTE network cell.
The present invention is without carrying out other condition judgments, that is, as long as receiving LTE network adjacent cell frequency information,
Start search, as long as searching applicable cell, starts switching, save and judge the time accordingly.Without scanning all work
Frequency band, also, monitor that first applicable cell just stops search.Therefore, the present invention can effectively shorten the initial network selection time.
In addition, the present invention by end side command deployment network sequence, GSM network to LTE network switching, it can be ensured that
It is executed by the switching of GSM network to LTE network.Implementation method is simple, is not related to the modification of network side specification.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 show a kind of method flow diagram of search network of the present invention.
Fig. 2 show a kind of configuration diagram of the system of search network of the present invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the positioned opposite and numerical value of the component and step that otherwise illustrate in these embodiments does not limit the scope of the invention.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
It is existing to support that the LTE network search routine of the LTE terminal of N number of LTE frequency bands is, since N=1, start n-th LTE
Band search, judges whether the cell searched is applicable in, and if applicable, then registers applicable LTE cells, if not applicable, N
=N+1, continues band search.Since the time of one LTE frequency band of search is even longer up to tens seconds, so support
LTE frequency bands are more, and the search time needed is longer.
The present invention supports under roaming state, first powers on the fast search of network selection, can effectively shorten LTE/GSM dual-mode terminals
The initial network selection time.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Fig. 1 show a kind of method flow diagram of search network of the present invention.This approach includes the following steps：
Step 11, when LTE/GSM double-module terminal start-ups, LTE/GSM dual-mode terminals start GSM network search.
Step 12, GSM network is searched, GSM network is registered to.
Step 13, LTE/GSM dual-mode terminals obtain LTE network adjacent cell frequency information from the GSM network of registration.
Wherein, GSM network can be broadcasted by system message, and LTE/GSM dual-mode terminals are by system message from GSM
Network receives the adjacent cell frequency information of LTE network.
Step 14, LTE network search process is started according to the LTE network adjacent cell frequency information of acquisition.
In this step, search is directly initiated, the preferential of the LTE network adjacent cell frequency for including in system message is ignored
Grade, ignores the RLA_C of serving cell（Received signal level）With THRESH_priority_search（Search priority thresholding）
Comparison.
Step 15, first applicable LTE network cell is searched, and is switched over.
Wherein, LTE/GSM dual-mode terminals control is switched to first applicable LTE network cell.It is mentioned here to be applicable in
Cell refers to the cell that normal service can be stationed and be obtained to LTE terminal.
In the present invention, when the target network of LTE/GSM dual-mode terminals is LTE network, it is switched on using GSM network and is initially selected
The net time is switched on short advantage of initial network selection time than LTE network.When being switched on initial network selection, GSM network search, note are executed
Volume receives system message, obtains LTE network adjacent cell frequency information.For example, at the idling mode, upon request by a user, moving
Dynamic platform manually, can determine GSM850 in 15 seconds to 20 seconds（15 seconds）/900（15 seconds）/1800（20 seconds）/1900
（20 seconds）In available PLMN（Public Land Mobile Network, public land mobile network）, if it is automatic side
Formula, it is determined that PLMN that is available and obtaining permission.
After obtaining LTE network adjacent cell frequency information, ignore the LTE network adjacent cell frequency for including in system message
The priority of rate ignores the RLA_C of serving cell（Received signal level）With THRESH_priority_search（Search is preferential
Grade thresholding）Comparison, directly using obtain LTE network adjacent cell frequency information start LTE network search process immediately, hold
The search and measurement of row LTE network adjacent cell, and after searching first applicable LTE network cell, be switched to this and be applicable in
LTE network cell.Whole process needs most 8 of the LTE network frequency searched for.
The present invention is without carrying out other condition judgments, that is, as long as receiving LTE network adjacent cell frequency information,
Start search, as long as searching applicable cell, starts switching, save and judge the time accordingly.Present invention saves LTE/
GSM dual-mode terminals execute the cell reselection algorithm based on precedence information in an idle state（It is cut from GSM network to LTE network
It changes）The required time without scanning whole working bands, also, monitors that first applicable cell just stops search.Cause
This, the present invention can effectively shorten the initial network selection time.
In addition, switching between sequence and network of the present invention by LTE/GSM dual-mode terminal command deployment networks, it can be ensured that by
The switching of GSM network to LTE network executes.Implementation method is simple, is not related to the modification of network side specification.
Fig. 2 show a kind of configuration diagram of the system of search network of the present invention.The system includes search unit, note
Volume unit, acquiring unit, start unit and switch unit.
Search unit is configured in LTE/GSM double-module terminal start-ups, starts GSM network search.
Registering unit is configured at after searching GSM network, is registered to GSM network.
Acquiring unit is configured at the frequency information that LTE network adjacent cell is obtained from the GSM network of registration.
Wherein, GSM network can be broadcasted by system message, and acquiring unit is connect by system message from GSM network
Receive the adjacent cell frequency information of LTE network.
Start unit is configured at and starts LTE network search process according to the LTE network adjacent cell frequency information of acquisition.
Wherein, start unit directly initiates search, ignores the excellent of the LTE network adjacent cell frequency for including in system message
First grade ignores the RLA_C of serving cell（Received signal level）With THRESH_priority_search（Search priority door
Limit）Comparison.
Switch unit is configured at after searching first applicable LTE network cell, be switched to first it is applicable
LTE network cell.It is mentioned here to be applicable in cell to refer to LTE/GSM dual-mode terminals be stationed and obtain the small of normal service
Area.
In one embodiment of the invention, switch unit is arranged in LTE/GSM dual-mode terminals, that is, by LTE/GSM bimodulus
Terminal control is switched to first applicable LTE network cell.
The present invention in an idle state, searches for when target network is LTE network and registers GSM network first.LTE/
GSM dual-mode terminals directly start LTE network using the frequency information of the adjacent cells LTE obtained from GSM network and searched for immediately
Journey, and when searching first applicable LTE network adjacent cell, it is switched to first applicable LTE network adjacent cell.This
Invention without scanning whole working bands, also, monitors that first applicable cell is just stopped without carrying out other condition judgments
Only search for.Therefore, the present invention can effectively shorten the initial network selection time.
Sequence and internetwork switching of the present invention also by LTE/GSM dual-mode terminal command deployment networks, it can be ensured that
It is executed by the switching of GSM network to LTE network.Implementation method is simple, is not related to the modification of network side specification.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, it is public that this field institute is not described
Some details known.Those skilled in the art as described above, can be appreciated how to implement technology disclosed herein completely
Scheme.
The method and device of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Person's software, hardware, firmware any combinations come realize the present invention method and device.The step of for the method it is above-mentioned
Sequence is merely to illustrate, and the step of method of the invention is not limited to sequence described in detail above, unless with other sides
Formula illustrates.In addition, in some embodiments, the present invention can be also embodied as recording program in the recording medium, these
Program includes for realizing machine readable instructions according to the method for the present invention.Thus, the present invention also covers storage for executing
The recording medium of program according to the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (6)
1. a kind of method of search network, which is characterized in that including：
When long term evolution (LTE)/global mobile communication (GSM) double-module terminal start-up, LTE/GSM dual-mode terminals start GSM network
Search；
After searching GSM network, it is registered to GSM network；
LTE/GSM dual-mode terminals obtain the frequency information of LTE network adjacent cell from the GSM network of registration；Wherein, GSM network
The frequency information of LTE network adjacent cell is broadcasted by system message；
Start LTE network search process according to the adjacent cells the LTE frequency information of acquisition；Wherein, start LTE network to search for
Journey, including：Search is directly initiated, ignores the priority for the LTE network adjacent cell frequency for including in system message, ignores service
The comparison of the received signal level and search priority thresholding of cell；
First applicable LTE network cell is searched, and is switched over.
2. the method for search network as described in claim 1, it is characterised in that：
The control of LTE/GSM dual-mode terminals is switched to first applicable LTE network cell.
3. the method for search network as claimed in claim 1 or 2, it is characterised in that：
It refers to the cell that normal service can be stationed and be obtained to LTE/GSM dual-mode terminals to be applicable in cell.
4. a kind of system of search network, which is characterized in that including：
Search unit is configured in long term evolution (LTE)/global mobile communication (GSM) double-module terminal start-up, starts GSM nets
Network is searched for；
Registering unit is configured at after searching GSM network, is registered to GSM network；
Acquiring unit is configured at the frequency information that LTE network adjacent cell is obtained from the GSM network of registration；Wherein, GSM network
The frequency information of LTE network adjacent cell is broadcasted by system message；Acquiring unit is received by system message from GSM network
The adjacent cell frequency information of LTE network；
Start unit is configured at and starts LTE network search process according to the LTE network adjacent cell frequency information of acquisition；Wherein,
The start unit directly initiates search, ignores the priority for the LTE network adjacent cell frequency for including in system message, ignores
The comparison of the received signal level and search priority thresholding of serving cell；
Switch unit is configured at after searching first applicable LTE network cell, is switched to first applicable LTE net
Network cell.
5. the system of search network as claimed in claim 4, which is characterized in that including：
Switch unit is arranged in LTE/GSM dual-mode terminals, that is, by the control of LTE/GSM dual-mode terminals be switched to first it is applicable
LTE network cell.
6. the system of search network as described in claim 4 or 5, which is characterized in that including：
It refers to the cell that normal service can be stationed and be obtained to LTE/GSM dual-mode terminals to be applicable in cell.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106465254B (en) * | 2015-03-02 | 2020-08-14 | 华为技术有限公司 | Network access processing method, device and terminal |
| CN106488516B (en) * | 2015-08-31 | 2019-11-29 | 展讯通信（上海）有限公司 | User terminal and its cell switching method and device |
| CN106131815A (en) * | 2016-06-22 | 2016-11-16 | 努比亚技术有限公司 | Mobile terminal and the method realizing data service switching |
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| CN102231901A (en) * | 2011-06-17 | 2011-11-02 | 中兴通讯股份有限公司 | Method for ensuring mobile terminal to reside in network and mobile terminal |
| CN102869071A (en) * | 2012-09-12 | 2013-01-09 | 青岛海信移动通信技术股份有限公司 | Method and device for supporting global system for mobile communications (GSM) terminal to search long term evolution (LTE) network |
| CN102958134A (en) * | 2012-11-13 | 2013-03-06 | 华为终端有限公司 | Network access method, device, equipment and system |
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2013
- 2013-05-28 CN CN201310202455.7A patent/CN104185229B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231901A (en) * | 2011-06-17 | 2011-11-02 | 中兴通讯股份有限公司 | Method for ensuring mobile terminal to reside in network and mobile terminal |
| CN102869071A (en) * | 2012-09-12 | 2013-01-09 | 青岛海信移动通信技术股份有限公司 | Method and device for supporting global system for mobile communications (GSM) terminal to search long term evolution (LTE) network |
| CN102958134A (en) * | 2012-11-13 | 2013-03-06 | 华为终端有限公司 | Network access method, device, equipment and system |
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