CN107197487B - A kind of network reselection method and mobile terminal - Google Patents
A kind of network reselection method and mobile terminal Download PDFInfo
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- CN107197487B CN107197487B CN201710468669.7A CN201710468669A CN107197487B CN 107197487 B CN107197487 B CN 107197487B CN 201710468669 A CN201710468669 A CN 201710468669A CN 107197487 B CN107197487 B CN 107197487B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The present invention provides a kind of network reselection method and mobile terminal, which comprises detects the signal strength under the resident network of the mobile terminal；If the signal strength is lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list；The minimum access threshold value of the frequency point for supporting target network is obtained, and gravity treatment measurement is carried out to the frequency point for supporting target network；According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, determine that a frequency point is target frequency point in the frequency point for supporting target network；By the network of the resident network switching of the mobile terminal to the target frequency point.Network switching can be promoted the communication capacity of mobile terminal to guarantee that mobile terminal can be normally carried out communication to the stronger narrowband cellular network of covering power when the signal strength of mobile terminal is weak by network reselection method provided in an embodiment of the present invention.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of network reselection methods and mobile terminal.
Background technique
With the development of communication technology, have become can not in people's daily life for the mobile terminals such as mobile phone and tablet computer
Or scarce tool.Requirement of the people for mobile terminal is higher and higher, especially the communication capacity of mobile terminal.But when with
When family carrying mobile terminal enters network signal bad place, such as the staircase field in garage located underground or building
Institute, the signal of communication of mobile terminal can weaken causes the communication capacity of mobile terminal to reduce even in non-service state, influences
User experience.
Current mobile terminal generally will do it network reselection when entering the weak place of signal strength, will be current
Network switching access to the stronger network of network coverage ability.But since mobile terminal is during carrying out network reselection,
Usually according to it is each access network priority measure, such as: for long term evolution (Long Term Evolution,
LTE) network and global system for mobile communications (Global Systemfor Mobile Communication, GSM) network, LTE
The priority of network be usually set the network priority higher than GSM network.If mobile terminal be currently resident in GSM network and
When signal of communication is poor, mobile terminal can preferentially be measured LTE network, and LTE network has worse net compared to GSM network
Network covering power leads to the communication energy of mobile terminal to make mobile terminal that can not search the strong network of network coverage ability
Power is unable to get improvement.As it can be seen that there is communication capacity difference when signal strength is weak in current mobile terminal.
Summary of the invention
The embodiment of the present invention provides a kind of network reselection method and mobile terminal, to solve current mobile terminal in signal
There is a problem of communication capacity difference when intensity is weak.
In a first aspect, the embodiment of the present invention provides a kind of network reselection method, it is applied to mobile terminal, the method packet
It includes:
Detect the signal strength under the resident network of the mobile terminal；
If the signal strength is lower than preset signal strength threshold value, is searched in LTE frequency point information list and support target network
The frequency point of network, wherein the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are the same as frequency
Deployment；
The minimum access threshold value of the frequency point for supporting target network is obtained, and to the frequency point for supporting target network
Carry out gravity treatment measurement；
According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, in the support
Determine that a frequency point is target frequency point in the frequency point of target network；
By the network of the resident network switching of the mobile terminal to the target frequency point.
Second aspect, the embodiment of the present invention also provide a kind of mobile terminal, comprising:
Signal strength detection module, for detecting the signal strength under the resident network of the mobile terminal；
Frequency point searching module, if being lower than preset signal strength threshold value for the signal strength, in LTE frequency point information list
It is middle to search the frequency point for supporting target network, wherein the target network be the network of support narrowband cellular network protocols, and its frequency
Point is disposed with LTE frequency point with frequency；
Measurement module, for obtaining the minimum access threshold value of the frequency point for supporting target network, and to the support
The frequency point of target network carries out gravity treatment measurement；
Determining module, for the minimum access threshold value and gravity treatment measurement knot according to the frequency point for supporting target network
Fruit determines that a frequency point is target frequency point in the frequency point for supporting target network；
Network handover module, for by the mobile terminal be resident network switching to the target frequency point network.
The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, including processor, and memory is stored in described
On memory and the network reselection program that can run on the processor, the network reselection program are executed by the processor
The step of Shi Shixian above-mentioned network reselection method.
Fourth aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, the computer-readable storage
Network reselection program is stored on medium, the network reselection program realizes above-mentioned network reselection method when being executed by processor
Step.
In the embodiment of the present invention, the signal strength under the resident network of the mobile terminal is detected；If the signal strength
Lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list, wherein the target
Network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain the support target network
The minimum access threshold value of the frequency point of network, and gravity treatment measurement is carried out to the frequency point for supporting target network；According to the support
The minimum access threshold value and reselection measurements of the frequency point of target network determine in the frequency point for supporting target network
One frequency point is target frequency point；By the network of the resident network switching of the mobile terminal to the target frequency point.In this way, when movement
It, can be by network switching to the stronger narrowband cellular network of covering power, to guarantee mobile whole when the signal strength of terminal is weak
End can be normally carried out communication, promote the communication capacity of mobile terminal.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of network reselection method provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another network reselection method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of mobile terminal intermediate-frequeney point searching module provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of determining module in a kind of mobile terminal provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the second determination unit in a kind of mobile terminal provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It is a kind of flow diagram of network reselection method provided in an embodiment of the present invention referring to Fig. 1, Fig. 1, is applied to move
Dynamic terminal, as shown in Figure 1, which comprises
Signal strength under the resident network of step 101, the detection mobile terminal.
In the embodiment of the present invention, mobile terminal can detecte the signal strength under its resident network, such as: mobile terminal
Detect its signal strength resided under GSM network or LTE network.Wherein, above-mentioned signal strength can be using received
Signal strength indicates (Received Signal Strength Indication, RSSI), received signal code power
(Received Signal Code Power, RSCP) or receive pilot energy (Ec) and total reception energy or general power
The indexs such as the ratio (Ec/Io) of spectrum density (Io) are measured.
If step 102, the signal strength are lower than preset signal strength threshold value, branch is searched in LTE frequency point information list
Hold the frequency point of target network, wherein the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE
Frequency point co-frequency deployment.
It is mobile if above-mentioned steps 101 detect the signal strength under the resident network of mobile terminal in the embodiment of the present invention
The signal strength that terminal can detecte preset signal strength threshold value corresponding with preset resident network is compared, when
When the signal strength detected is lower than above-mentioned preset signal strength threshold value, the covering energy of the resident network of mobile terminal can be determined
Power is unable to satisfy current communicating requirement, then mobile terminal is needed currently resident network switching to having stronger covering power
Network.
If above-mentioned signal strength is lower than preset signal strength threshold value, mobile terminal can be in LTE frequency point information list
Frequency point is searched, to find the frequency point for supporting target network in all LTE frequency points.Wherein, above-mentioned LTE frequency point information column
Each frequency point is the frequency point of system message instruction in table, and above system message is that mobile terminal is received to be sent out by network side equipment
The message sent.Wherein, the frequency point of system message instruction can be preset in network side equipment, and mobile terminal is receiving
When message of uniting, the frequency point indicated in available system message, and the frequency point by obtaining is established LTE frequency point information list and is carried out
Storage.In addition, above-mentioned target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency,
Such as: it can be center frequency point LTE CAT-M identical with LTE frequency point (LTE Category-M, grade are the LTE of M) net
Network etc..
Step 103, the minimum access threshold value for obtaining the frequency point for supporting target network, and to the support target network
The frequency point of network carries out gravity treatment measurement.
In the embodiment of the present invention, if above-mentioned steps 102 find the frequency point for supporting target network, mobile terminal is available
The minimum access threshold value of each frequency point for supporting target network, the minimum access threshold value of each frequency point configure in network side equipment and
Mobile terminal is sent to by system message；Meanwhile mobile terminal carries out gravity treatment measurement to each frequency point for supporting target network, with
Just channel quality assessment is carried out, judges whether the network of each frequency point for supporting target network meets resident standard.
Wherein, during the above-mentioned frequency point to support target network carries out gravity treatment measurement, mobile terminal will support target
The corresponding cell of each frequency point in the frequency point of network as cell to be selected, and in preset duration according to predetermined period to every
One cell to be selected measures, and obtains reference signal receiving intensity (the Reference Signal in each period with measurement
Receiving Power, RSRP), it is received so as to obtain at least twice reference signal of each frequency point in preset duration
Intensity.
Step 104, according to it is described support target network frequency point minimum access threshold value and reselection measurements,
Determine that a frequency point is target frequency point in the frequency point for supporting target network.
In the embodiment of the present invention, mobile terminal can will support the minimum access threshold value and gravity treatment of the frequency point of target network
Measurement result is compared, and determines that a frequency point for meeting preset condition is target frequency point in the frequency point for supporting target network.Its
In, the reference signal at least twice that above-mentioned preset condition can be in the preset duration for judging the frequency point of a support target network connects
Receive whether intensity is all larger than its minimum access threshold value, if so, determining that the frequency point of the support target network meets preset condition；
Or the receiving intensity of reference signal at least twice that can be in the preset duration for judging a support target frequency point minimum connects with its
Whether the ratio for entering threshold value is all larger than default ratio, if so, determining that the frequency point of the support target network meets preset condition
Deng.
Wherein, a frequency point for meeting preset condition is target frequency point in the above-mentioned determining frequency point for supporting target network, can be with
It is mobile terminal according in the frequency point for supporting target network, each frequency point is in the sequence of LTE frequency point information list, and successively judgement is supported
Whether each frequency point meets above-mentioned preset condition in the frequency point of target network, presets if the frequency point of current support target network meets
When condition, using the frequency point of current support target network as target frequency point；If the frequency point of current support target network is discontented
Sufficient preset condition judges that next frequency point of the frequency point of support target network current in sequence is then according to the sequence of each frequency point
It is no to meet preset condition, until determining target frequency point.Wherein, mobile terminal can be in advance to frequency each in LTE frequency point information list
Point is ranked up, and such as carries out descending arrangement to frequency point each in LTE frequency point information list according to the frequency of each frequency point.
Such as: if there are three the frequency point tools of above-mentioned support target network, and above three supports the frequency point of target network to exist
Serial number is respectively 1,2 and 5 in the sequence of LTE frequency point information list, and it is default that mobile terminal first judges whether the frequency point of serial number 1 meets
Condition, if so, determining that the frequency point of serial number 1 is target frequency point；If it is not, continuing to judge whether the frequency point of serial number 2 meets pre-
If condition, if so, determining that the frequency point of serial number 2 is target frequency point；If it is not, continuing to judge whether the frequency point of serial number 5 meets
Preset condition, if so, being target frequency point by the frequency point of serial number 5.
It is above-mentioned to determine that a frequency point is target frequency point in the frequency point for supporting target network, it is also possible to mobile terminal first in institute
There is the frequency point to be selected for determining in the frequency point for supporting target network and meeting preset condition, then wait select random in frequency point or press
Select a frequency point as target frequency point according to preset rules.Such as: it can be and respectively wait select in frequency point, determining reference signal reception
Power and access threshold value have the frequency point to be selected of maximum difference as target frequency point etc..
The network of step 105, the network switching for being resident the mobile terminal to the target frequency point.
In the embodiment of the present invention, if above-mentioned steps 104 determine target frequency point, then it represents that the network of target frequency point is compared to movement
The network that terminal is currently resident has stronger covering power, and can ensure that mobile terminal carries out just under the network of target frequency point
Normal open letter, mobile terminal can be by the network of its resident network switching to target frequency point.
It should be noted that mobile terminal does not find support target in LTE frequency point information list in above-mentioned steps 102
The frequency point of network；Or target frequency point has not been obtained in mobile terminal in above-mentioned steps 104, then mobile terminal is cut without network
It changes, or carries out network reselection according to existing network reselection process, be not defined herein.
In the embodiment of the present invention, above-mentioned mobile terminal can be any mobile terminal for being able to carry out communication, such as: hand
Machine, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), individual digital help
Manage (personal digital assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device,
) or wearable device (Wearable Device) etc. MID.
In the embodiment of the present invention, the signal strength under the resident network of the mobile terminal is detected；If the signal strength
Lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list, wherein the target
Network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain the support target network
The minimum access threshold value of the frequency point of network, and gravity treatment measurement is carried out to the frequency point for supporting target network；According to the support
The minimum access threshold value and reselection measurements of the frequency point of target network determine in the frequency point for supporting target network
One frequency point is target frequency point；By the network of the resident network switching of the mobile terminal to the target frequency point.In this way, when movement
It, can be by network switching to the stronger narrowband cellular network of covering power, to guarantee mobile whole when the signal strength of terminal is weak
End can be normally carried out communication, promote the communication capacity of mobile terminal.
Referring to fig. 2, Fig. 2 is a kind of flow diagram of network reselection method provided in an embodiment of the present invention, such as Fig. 2 institute
Show, comprising the following steps:
Signal strength under the resident network of step 201, the detection mobile terminal.
If step 202, the signal strength are lower than preset signal strength threshold value, detect whether the mobile terminal supports mesh
Mark network.
In the embodiment of the present invention, when mobile terminal is when detecting the signal strength under currently resident network, movement is eventually
End may determine that whether the signal strength detected is lower than the corresponding preset signal strength threshold value of resident network, if above-mentioned signal
Intensity is lower than above-mentioned preset signal strength threshold value, and mobile terminal can detecte its communication module to determine if to support target network
Network.
Wherein, the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are the same as frequency portion
Administration.Such as: optional, the target network may include LTE CAT-M network, and LTECAT-M network is to support narrowband Cellular Networks
Network agreement and the network disposed with LTE with frequency have stronger network coverage ability compared to GSM network, and due to itself and LTE
With frequency dispose, be configured higher network priority, if mobile terminal support LTE CAT-M network, mobile terminal communication compared with
LTE CAT-M network is switched to when poor, it can be ensured that mobile terminal carries out normal communication, improves the communication capacity of mobile terminal.
Certainly, above-mentioned target network is also possible to other networks supporting narrowband cellular network protocols and disposing with LTE with frequency, herein simultaneously
Without limiting.
If step 203, the mobile terminal support the target network, judge to whether there is in LTE frequency point information list
Narrowband Warning Mark position is the frequency point of default flag bit.
In the embodiment of the present invention, if above-mentioned steps 202 determine that mobile terminal supports target network, mobile terminal available
The narrowband Warning Mark position of each frequency point in LTE frequency point information list, and judge in LTE frequency point information list with the presence or absence of at least one
The narrowband Warning Mark position of a frequency point is default flag bit, if so, determining that there are narrowband indicateing arms in LTE frequency point information list
Will position is the frequency point of default flag bit.Wherein, above-mentioned default flag bit can be preset in the terminal, can will be preset
Flag bit is set as 0 or 1.
Wherein, in above-mentioned LTE frequency point information list each frequency point be system message instruction frequency point.Optionally, above-mentioned
It can also include: the system message that received network side equipment is sent before step 201, and obtain the system message instruction
Frequency point narrowband Warning Mark position and access threshold value.
In the way of example, the narrowband instruction of the frequency point of each frequency point in LTE frequency point information list, i.e. system message instruction
Flag bit and access threshold value are preset in network side equipment, and network side equipment periodically sends to mobile terminal and is
It unites message, mobile terminal can receive the system message of network side equipment transmission, obtain the frequency point of system message instruction and each
The narrowband Warning Mark position of frequency point and access threshold value are simultaneously stored, or by the narrowband Warning Mark position of storage and are connect
Enter threshold value to be updated, so that mobile terminal be allow quickly to find target frequency point, improve the efficiency of network reselection with
And accuracy rate.
Such as: if target network is LTE CAT-M network, LTE CAT-M net can will be supported in LTE frequency point information list
The narrowband Warning Mark position 0 of the frequency point of LTE CAT-M network will not supported in the narrowband Warning Mark position 1 of the frequency point of network；Together
When, different access threshold values can be added for each frequency point, which is the minimum access level in narrowband of each frequency point
Value, and it is identical as the minimum access level value format of LTE to access threshold value.
If, will be narrow there are the frequency point that narrowband Warning Mark position is default flag bit in step 204, the LTE information list
With the frequency point that Warning Mark position is default flag bit as the frequency point for supporting target network.
In the embodiment of the present invention, if above-mentioned steps 203 determine that in LTE information list there are narrowband Warning Mark position be default
Narrowband Warning Mark position can be the frequency point of default flag bit as support target network by the frequency point of flag bit, mobile terminal
Frequency point.Such as: if the narrowband Warning Mark position of the default frequency point for supporting LTE CAT-M network of network side equipment is 1, and mobile whole
In end preset flag bit be 1, mobile terminal may determine that each frequency point in LTE frequency point information list narrowband Warning Mark position whether
It is 1, if so, determining that the frequency point that Warning Mark position in narrowband is 1 is the frequency point for supporting target network；If the default branch of network side equipment
The narrowband Warning Mark position for holding the frequency point of LTE CAT-M network is 0, and it is 0 that flag bit is preset in mobile terminal, and mobile terminal can
To determine that the frequency point that narrowband Warning Mark position is 0 is the frequency point for supporting target network.
It should be noted that the frequency point of above-mentioned support target network can be a frequency point in LTE frequency point information list,
It is also possible to two or more frequency point, is not defined herein.
Step 205, the minimum access threshold value for obtaining the frequency point for supporting target network, and to the support target network
The frequency point of network carries out gravity treatment measurement.
In the embodiment of the present invention, if above-mentioned steps 204 determine the frequency point for supporting target network, the available branch of mobile terminal
The minimum access threshold value of target network frequency point is held, and by carrying out gravity treatment measurement to each frequency point, it is pre- to obtain each frequency point with measurement
If the Reference Signal Received Power in duration.
Step 206, according to it is described support target network frequency point minimum access threshold value and reselection measurements,
Determine that a frequency point is target frequency point in the frequency point for supporting target network.
In the embodiment of the present invention, the minimum access thresholding for each frequency point that mobile terminal can be obtained according to above-mentioned steps 205
Value and reselection measurements determine that a frequency point is target frequency point in the frequency point for supporting target network.
Optionally, above-mentioned steps 206 may include: to judge in the frequency point for supporting target network, and each frequency point is default
In the Reference Signal Received Power at least twice that gravity treatment measurement obtains in duration, Reference Signal Received Power is minimum with it each time
Whether the difference of access threshold value is all larger than predetermined level threshold value；If frequency point gravity treatment measurement in preset duration obtains at least
Twice in Reference Signal Received Power, the difference of Reference Signal Received Power and its minimum access threshold value is all larger than pre- each time
If level threshold, it is determined that the frequency point is frequency point to be selected；According to preset rules described wait select to determine a frequency point in frequency point
For the target frequency point.
In the embodiment, target frequency point must satisfy its Reference Signal Received Power within a preset time and minimum connect with its
The difference for entering threshold value is always more than predetermined level threshold value, so as to so that mobile terminal resides in the network of the target frequency point
When lower, normal communication can be carried out and lasting holding communication is stablized.
Wherein, it is above-mentioned according to preset rules wait select to determine that a frequency point be target frequency point in frequency point, can be mobile end
End is randomly choosed wait select the frequency point in frequency point as target frequency point；Optionally, it is above-mentioned according to preset rules described to be selected
It selects and determines a step of frequency point is the target frequency point in frequency point, may include: to calculate respectively wait select frequency point when described default
In the Reference Signal Received Power at least twice that gravity treatment measurement obtains in long, minimum reference signal receives power and its minimum access
The difference of threshold value；Respectively the minimum reference signal of frequency point to be selected receives the difference of power and its minimum access threshold value,
Using the maximum frequency point to be selected of difference as the target frequency point.In this way, target frequency point is all minimums wait select in frequency point
The maximum frequency point of difference of Reference Signal Received Power and its minimum access threshold value, then the network of target frequency point is compared wait select
The network of frequency point in frequency point in addition to target frequency point, has stronger covering power, further promotes mobile terminal network and cuts
Communication quality after changing.
The network of step 207, the network switching for being resident the mobile terminal to the target frequency point.
In the embodiment of the present invention, if above-mentioned steps 206 determine that target frequency point, mobile terminal can successively believe physical broadcast
The channels such as road are demodulated, and initiate to register in the network of above-mentioned target frequency point, by its resident network switching to target frequency point
Network, since above-mentioned network switching process is well known to those skilled in the art, herein and without repeating.
In addition, it is necessary to illustrate, mobile terminal detects that it does not support target network in above-mentioned steps 202；On or
It states mobile terminal in step 203 and determines that it is default flag bit that Warning Mark position in narrowband is not present in LTE frequency point information list, then moves
It moves terminal and carries out network reselection without network switching, or according to existing network reselection process, be not defined herein.
In the embodiment of the present invention, if the signal strength is lower than preset signal strength threshold value, detecting the mobile terminal is
No support target network；If the mobile terminal supports the target network, judge in LTE frequency point information list with the presence or absence of narrow
It is the frequency point of default flag bit with Warning Mark position；It is marked with if there are narrowband Warning Mark positions in the LTE information list to be pre-
The frequency point of will position, it is mobile using the frequency point that narrowband Warning Mark position is default flag bit as the frequency point for supporting target network
Terminal can determine if to support target network by the narrowband Warning Mark position of each frequency point, to improve mobile terminal network
The efficiency of switching.
It is a kind of structural schematic diagram of mobile terminal provided in an embodiment of the present invention referring to Fig. 3, Fig. 3, as shown in figure 3, institute
Stating mobile terminal 300 includes:
Signal strength detection module 301, for detecting the signal strength under the resident network of the mobile terminal；
Frequency point searching module 302, if being lower than preset signal strength threshold value for the signal strength, in LTE frequency point information
The frequency point for supporting target network is searched in list, wherein the target network is the network for supporting narrowband cellular network protocols, and
Its frequency point and LTE frequency point are disposed with frequency；
Measurement module 303, for obtaining the minimum access threshold value of the frequency point for supporting target network, and to the branch
The frequency point for holding target network carries out gravity treatment measurement；
Determining module 304, for being surveyed according to the minimum access threshold value and gravity treatment of the frequency point for supporting target network
Amount in the frequency point for supporting target network as a result, determine that a frequency point is target frequency point；
Network handover module 305, for by the mobile terminal be resident network switching to the target frequency point network.
Optionally, as shown in figure 4, the frequency point searching module 302 may include:
Network detection unit 3021 detects the movement if being lower than preset signal strength threshold value for the signal strength
Whether terminal supports target network；
Frequency point judging unit 3022 judges that LTE frequency point information arranges if supporting the target network for the mobile terminal
It whether there is the frequency point that Warning Mark position in narrowband is default flag bit in table；
Frequency point determination unit 3023, if for there are narrowband Warning Mark position being default mark in the LTE information list
The frequency point of position, using the frequency point that narrowband Warning Mark position is default flag bit as the frequency point for supporting target network.
Optionally, as shown in figure 5, the determining module 304 includes:
Power judging unit 3041 is received, for judging in the frequency point for supporting target network, each frequency point is when default
In the Reference Signal Received Power at least twice that gravity treatment measurement obtains in long, Reference Signal Received Power minimum connects with its each time
Whether the difference for entering threshold value is all larger than predetermined level threshold value；
First determination unit 3042, if the reference letter at least twice that gravity treatment measurement obtains in preset duration for a frequency point
Number receive power in, each time Reference Signal Received Power and its it is minimum access threshold value difference be all larger than predetermined level threshold
Value, it is determined that the frequency point is frequency point to be selected；
Second determination unit 3043, for according to preset rules it is described wait select in frequency point determine a frequency point be the mesh
Mark frequency point.
Optionally, as shown in fig. 6, second determination unit 3043 may include:
Computation subunit 30431, for calculate respectively frequency point to be selected gravity treatment measurement in the preset duration obtain to
In few Reference Signal Received Power twice, minimum reference signal receives the difference of power and its minimum access threshold value；
Determine subelement 30432, minimum reference signal reception power and its for respectively frequency point to be selected are minimum to be connect
The difference for entering threshold value, using the maximum frequency point to be selected of difference as the target frequency point.
Optionally, as shown in fig. 7, the mobile terminal 300 can also include:
Message reception module 306 for the system message that received network side equipment is sent, and obtains the system message
The narrowband Warning Mark position of the frequency point of instruction and access threshold value.
Optionally, the target network may include LTE CAT-M network.
Mobile terminal 300 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here
It repeats no more.
The mobile terminal 300 of the embodiment of the present invention detects the signal strength under the resident network of the mobile terminal；If institute
Signal strength is stated lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list,
In, the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain institute
The minimum access threshold value for supporting the frequency point of target network is stated, and gravity treatment measurement is carried out to the frequency point for supporting target network；
According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, in the support target network
Frequency point in determine a frequency point be target frequency point；By the net of the resident network switching of the mobile terminal to the target frequency point
Network.In this way, when the signal strength of mobile terminal is weak, can by network switching to the stronger narrowband cellular network of covering power,
To guarantee that mobile terminal can be normally carried out communication, the communication capacity of mobile terminal is promoted.
The embodiment of the present invention also provides a kind of mobile terminal, including processor, and memory is stored on the memory simultaneously
The network reselection program that can be run on the processor, the network reselection program are realized above-mentioned when being executed by the processor
Each process of network reselection method embodiment, and identical technical effect can be reached, to avoid repeating, which is not described herein again.
The embodiment of the present invention also provides a kind of computer readable storage medium, is stored with net on computer readable storage medium
Network reselection procedure, the network reselection program realize each mistake of above-mentioned network reselection method embodiment when being executed by processor
Journey, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage medium
Matter, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic or disk etc..
It is the structural schematic diagram that the present invention implements a kind of mobile terminal provided referring to Fig. 8, Fig. 8, as shown in figure 8, mobile
Terminal 800 includes: at least one processor 801, memory 802, at least one network interface 804 and user interface 803.It is mobile
Various components in terminal 800 are coupled by bus system 805.It is understood that bus system 805 is for realizing these groups
Connection communication between part.Bus system 805 further includes power bus, control bus and state in addition to including data/address bus
Signal bus.But for the sake of clear explanation, various buses are all designated as bus system 805 in fig. 8.
Wherein, user interface 803 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memory 802 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
It or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-
Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable
Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or
Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory
(Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory
(Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct
Rambus RAM, DRRAM).The memory 802 of system and method described herein is intended to include but is not limited to these and arbitrarily its
It is suitble to the memory of type.
In some embodiments, memory 802 stores following element, executable modules or data structures, or
Their subset of person or their superset: operating system 8021 and application program 8022.
Wherein, operating system 8021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 8022 includes various application programs, such as media
Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 8022.
In embodiments of the present invention, mobile terminal 800 further include: be stored on memory 802 and can be on processor 801
The network reselection program of operation specifically can be the network reselection program in application program 8022, and network reselection program is located
Reason device 801 realizes following steps when executing: detecting the signal strength under the resident network of the mobile terminal；If the signal is strong
Degree is lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list, wherein the mesh
Mark network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain the support target
The minimum access threshold value of the frequency point of network, and gravity treatment measurement is carried out to the frequency point for supporting target network；According to the branch
The minimum access threshold value and reselection measurements for holding the frequency point of target network, in the frequency point for supporting target network really
A fixed frequency point is target frequency point；By the network of the resident network switching of the mobile terminal to the target frequency point.
The method that the embodiments of the present invention disclose can be applied in processor 801, or be realized by processor 801.
Processor 801 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each
Step can be completed by the integrated logic circuit of the hardware in processor 801 or the instruction of software form.Above-mentioned processing
Device 801 can be general processor, digital signal processor (Digital Signal Processor, DSP), dedicated integrated electricity
Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor
And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the computer readable storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The meter
Calculation machine readable storage medium storing program for executing is located at memory 802, and processor 801 reads the information in memory 802, completes in conjunction with its hardware
The step of stating method.Specifically, network reselection program is stored on the computer readable storage medium, network reselection program is located
Manage each step realized when device 801 executes such as above-mentioned network reselection method embodiment.
It is understood that embodiments described herein can with hardware, software, firmware, middleware, microcode or its
Combination is to realize.For hardware realization, processing unit be may be implemented in one or more specific integrated circuit (Application
Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing,
DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic
Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor,
In controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, it can be realized herein by executing the module (such as process, function etc.) of function described herein
The technology.Software code is storable in memory and is executed by processor.Memory can in the processor or
It is realized outside processor.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 801: if the signal strength is low
In preset signal strength threshold value, detect whether the mobile terminal supports target network；If the mobile terminal supports the mesh
Network is marked, judges the frequency point in LTE frequency point information list with the presence or absence of narrowband Warning Mark position to preset flag bit；If described
There are the frequency points that narrowband Warning Mark position is default flag bit in LTE information list, are default mark by narrowband Warning Mark position
The frequency point of position is as the frequency point for supporting target network.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 801: judging the support target
It is each in the Reference Signal Received Power at least twice that the gravity treatment measurement in preset duration of each frequency point obtains in the frequency point of network
Whether the difference of secondary Reference Signal Received Power and its minimum access threshold value is all larger than predetermined level threshold value；If a frequency point is pre-
If in the Reference Signal Received Power at least twice that gravity treatment measurement obtains in duration, each time Reference Signal Received Power and its most
The difference of low access threshold value is all larger than predetermined level threshold value, it is determined that the frequency point is frequency point to be selected；Exist according to preset rules
It is described wait select in frequency point determine a frequency point be the target frequency point.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 801: calculating respectively frequency point to be selected
In the Reference Signal Received Power at least twice that gravity treatment measurement obtains in the preset duration, minimum reference signal receives power
With the difference of its minimum access threshold value；Respectively the minimum reference signal of frequency point to be selected receives power and its minimum access door
The difference of limit value, using the maximum frequency point to be selected of difference as the target frequency point.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 801: received network side equipment
The system message of transmission, and obtain narrowband Warning Mark position and the access threshold value of the frequency point of the system message instruction.
Optionally, the target network may include LTE CAT-M network.
Mobile terminal 800 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here
It repeats no more.
The mobile terminal 800 of the embodiment of the present invention detects the signal strength under the resident network of the mobile terminal；If institute
Signal strength is stated lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list,
In, the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain institute
The minimum access threshold value for supporting the frequency point of target network is stated, and gravity treatment measurement is carried out to the frequency point for supporting target network；
According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, in the support target network
Frequency point in determine a frequency point be target frequency point；By the net of the resident network switching of the mobile terminal to the target frequency point
Network.In this way, when the signal strength of mobile terminal is weak, can by network switching to the stronger narrowband cellular network of covering power,
To guarantee that mobile terminal can be normally carried out communication, the communication capacity of mobile terminal is promoted.
It is the structural schematic diagram that the present invention implements a kind of mobile terminal provided referring to Fig. 9, Fig. 9, can be realized Fig. 1 and figure
The details of network reselection method in 2 embodiment, and reach identical effect.As shown in figure 9, mobile terminal 900 includes radio frequency
(Radio Frequency, RF) circuit 910, memory 920, input unit 930, display unit 940, processor 950, audio
Circuit 960, communication module 970 and power supply 980.
Wherein, input unit 930 can be used for receiving the number or character information of user's input, and generation and mobile terminal
The related signal input of 900 user setting and function control.Specifically, in the embodiment of the present invention, which can
To include touch panel 931.Touch panel 931, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses the operations of any suitable object or attachment on touch panel 931 such as finger, stylus), and according to preparatory
The formula of setting drives corresponding attachment device.Optionally, touch panel 931 may include touch detecting apparatus and touch controller
Two parts.Wherein, the touch orientation of touch detecting apparatus detection user, and touch operation bring signal is detected, by signal
Send touch controller to；Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate,
The processor 950 is given again, and can be received order that processor 950 is sent and be executed.Furthermore, it is possible to using resistance-type,
The multiple types such as condenser type, infrared ray and surface acoustic wave realize touch panel 931.In addition to touch panel 931, input unit
930 can also include other input equipments 932, other input equipments 932 can include but is not limited to physical keyboard, function key
One of (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc. are a variety of.
Wherein, display unit 940 can be used for showing information input by user or be supplied to the information and movement of user
The various menu interfaces of terminal 900.Display unit 940 may include display panel 941, optionally, can use LCD or organic hair
The forms such as optical diode (Organic Light-Emitting Diode, OLED) configure display panel 941.
It should be noted that touch panel 931 can cover display panel 941, touch display screen is formed, when the touch display screen is examined
After measuring touch operation on it or nearby, processor 950 is sent to determine the type of touch event, is followed by subsequent processing device
950 provide corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area
And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
The interface elements such as the icon comprising at least one application program and/or widget desktop control.The Application Program Interface viewing area
Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example,
Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.The touch screen of the embodiment of the present invention is soft
Property screen, organic transparent conductive film of carbon nanotube is posted in two faces of flexible screen.
Wherein processor 950 is the control centre of mobile terminal 900, utilizes various interfaces and connection whole mobile phone
Various pieces, by running or executing the software program and/or module that are stored in first memory 921, and calling storage
Data in second memory 922 execute the various functions and processing data of mobile terminal 900, thus to mobile terminal 900
Carry out integral monitoring.Optionally, processor 950 may include one or more processing units.
In embodiments of the present invention, mobile terminal 900 further includes being stored in first memory 921 and can be in processor
The network reselection program run on 950, network reselection program realize following steps when being executed by processor 950: detecting the shifting
Signal strength under the resident network of dynamic terminal；If the signal strength is lower than preset signal strength threshold value, in LTE frequency point information
The frequency point for supporting target network is searched in list, wherein the target network is the network for supporting narrowband cellular network protocols, and
Its frequency point and LTE frequency point are disposed with frequency；The minimum access threshold value of the frequency point for supporting target network is obtained, and to the branch
The frequency point for holding target network carries out gravity treatment measurement；According to the minimum access threshold value of the frequency point for supporting target network and again
Measurement result is selected, determines that a frequency point is target frequency point in the frequency point for supporting target network；The mobile terminal is resident
Network switching to the target frequency point network.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 950: if the signal strength is low
In preset signal strength threshold value, detect whether the mobile terminal supports target network；If the mobile terminal supports the mesh
Network is marked, judges the frequency point in LTE frequency point information list with the presence or absence of narrowband Warning Mark position to preset flag bit；If described
There are the frequency points that narrowband Warning Mark position is default flag bit in LTE information list, are default mark by narrowband Warning Mark position
The frequency point of position is as the frequency point for supporting target network.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 950: judging the support target
It is each in the Reference Signal Received Power at least twice that the gravity treatment measurement in preset duration of each frequency point obtains in the frequency point of network
Whether the difference of secondary Reference Signal Received Power and its minimum access threshold value is all larger than predetermined level threshold value；If a frequency point is pre-
If in the Reference Signal Received Power at least twice that gravity treatment measurement obtains in duration, each time Reference Signal Received Power and its most
The difference of low access threshold value is all larger than predetermined level threshold value, it is determined that the frequency point is frequency point to be selected；Exist according to preset rules
It is described wait select in frequency point determine a frequency point be the target frequency point.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 950: calculating respectively frequency point to be selected
In the Reference Signal Received Power at least twice that gravity treatment measurement obtains in the preset duration, minimum reference signal receives power
With the difference of its minimum access threshold value；Respectively the minimum reference signal of frequency point to be selected receives power and its minimum access door
The difference of limit value, using the maximum frequency point to be selected of difference as the target frequency point.
Optionally, following steps be can also be achieved when network reselection program is executed by processor 950: received network side equipment
The system message of transmission, and obtain narrowband Warning Mark position and the access threshold value of the frequency point of the system message instruction.
Optionally, the target network may include LTE CAT-M network.
Mobile terminal 900 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here
It repeats no more.
The mobile terminal 900 of the embodiment of the present invention detects the signal strength under the resident network of the mobile terminal；If institute
Signal strength is stated lower than preset signal strength threshold value, the frequency point for supporting target network is searched in LTE frequency point information list,
In, the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；Obtain institute
The minimum access threshold value for supporting the frequency point of target network is stated, and gravity treatment measurement is carried out to the frequency point for supporting target network；
According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, in the support target network
Frequency point in determine a frequency point be target frequency point；By the net of the resident network switching of the mobile terminal to the target frequency point
Network.In this way, when the signal strength of mobile terminal is weak, can by network switching to the stronger narrowband cellular network of covering power,
To guarantee that mobile terminal can be normally carried out communication, the communication capacity of mobile terminal is promoted.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of mobile terminal and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed mobile terminal and method can pass through it
Its mode is realized.For example, mobile terminal embodiment described above is only schematical, for example, the division of unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of mobile terminal or unit
Or communication connection, it can be electrical property, mechanical or other forms.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unit
Component may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks
On unit.It can select some or all of unit therein according to the actual needs to realize the mesh of the embodiment of the present invention
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
If function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store
In a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words to existing
Having the part for the part or the technical solution that technology contributes can be embodied in the form of software products, the computer
Software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be personal meter
Calculation machine, server or network equipment etc.) execute all or part of the steps of each embodiment method of the present invention.And it is above-mentioned
Storage medium includes: the various media that can store program code such as USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (14)
1. a kind of network reselection method is applied to mobile terminal, which is characterized in that the described method includes:
Detect the signal strength under the resident network of the mobile terminal；
If the signal strength is lower than preset signal strength threshold value, is searched in LTE frequency point information list and support target network
Frequency point, wherein the target network is the network for supporting narrowband cellular network protocols, and its frequency point and LTE frequency point are disposed with frequency；
The minimum access threshold value of the frequency point for supporting target network is obtained, and the frequency point for supporting target network is carried out
Gravity treatment measurement；
According to the minimum access threshold value and reselection measurements of the frequency point for supporting target network, in the support target
Determine that a frequency point is target frequency point in the frequency point of network；
By the narrowband cellular network of the resident network switching of the mobile terminal to the target frequency point.
2. network reselection method according to claim 1, which is characterized in that if the signal strength is lower than default letter
Number intensity threshold, the step of frequency point for supporting target network is searched in LTE frequency point information list, comprising:
If the signal strength is lower than preset signal strength threshold value, detect whether the mobile terminal supports target network；
If the mobile terminal supports the target network, judge in LTE frequency point information list with the presence or absence of narrowband Warning Mark
Position is the frequency point of default flag bit；
If there are the frequency points that narrowband Warning Mark position is default flag bit in the LTE information list, by narrowband Warning Mark position
To preset the frequency point of flag bit as the frequency point for supporting target network.
3. network reselection method according to claim 1, which is characterized in that described according to the frequency for supporting target network
The minimum access threshold value and reselection measurements of point determine that a frequency point is target in the frequency point for supporting target network
The step of frequency point, comprising:
Judge in the frequency point for supporting target network, what the gravity treatment measurement in preset duration of each frequency point obtained refers at least twice
In signal reception power, whether the difference of Reference Signal Received Power and its minimum access threshold value is all larger than default electricity each time
Flat threshold value；
If in the Reference Signal Received Power at least twice that frequency point gravity treatment measurement in preset duration obtains, each time with reference to letter
Number receive power and its it is minimum access threshold value difference be all larger than predetermined level threshold value, it is determined that the frequency point be wait select frequency
Point；
According to preset rules described wait select to determine that a frequency point is the target frequency point in frequency point.
4. network reselection method according to claim 3, which is characterized in that it is described according to preset rules described wait select
A step of frequency point is the target frequency point is determined in frequency point, comprising:
It calculates in the Reference Signal Received Power at least twice that respectively frequency point to be selected gravity treatment measurement in the preset duration obtains,
Minimum reference signal receives the difference of power and its minimum access threshold value；
Respectively the minimum reference signal of frequency point to be selected receives the difference of power and its minimum access threshold value, by difference maximum
Frequency point to be selected as the target frequency point.
5. network reselection method as claimed in any of claims 1 to 4, which is characterized in that the detection shifting
Before the step of moving the signal strength under the resident network of terminal, further includes:
The system message that received network side equipment is sent, and obtain the narrowband Warning Mark of the frequency point of the system message instruction
Position and access threshold value.
6. network reselection method as claimed in any of claims 1 to 4, which is characterized in that the target network packet
Include LTE CAT-M network.
7. a kind of mobile terminal characterized by comprising
Signal strength detection module, for detecting the signal strength under the resident network of the mobile terminal；
Frequency point searching module is looked into LTE frequency point information list if being lower than preset signal strength threshold value for the signal strength
Look for support target network frequency point, wherein the target network be support narrowband cellular network protocols network, and its frequency point and
LTE frequency point is disposed with frequency；
Measurement module, for obtaining the minimum access threshold value of the frequency point for supporting target network, and to the support target
The frequency point of network carries out gravity treatment measurement；
Determining module, for according to it is described support target network frequency point minimum access threshold value and reselection measurements,
Determine that a frequency point is target frequency point in the frequency point for supporting target network；
Network handover module, for by the mobile terminal be resident network switching to the target frequency point narrowband Cellular Networks
Network.
8. mobile terminal according to claim 7, which is characterized in that the frequency point searching module includes:
Whether network detection unit detects the mobile terminal if being lower than preset signal strength threshold value for the signal strength
Support target network；
Frequency point judging unit, if supporting the target network for the mobile terminal, judge in LTE frequency point information list whether
There are the frequency points that narrowband Warning Mark position is default flag bit；
Frequency point determination unit, if in the LTE information list there are the frequency point that narrowband Warning Mark position is default flag bit,
Using the frequency point that narrowband Warning Mark position is default flag bit as the frequency point for supporting target network.
9. mobile terminal according to claim 7, which is characterized in that the determining module includes:
Power judging unit is received, for judging in the frequency point for supporting target network, the gravity treatment in preset duration of each frequency point
It measures in obtained Reference Signal Received Power at least twice, each time Reference Signal Received Power and its minimum access threshold value
Difference whether be all larger than predetermined level threshold value；
First determination unit, if the reference signal at least twice that gravity treatment measurement obtains in preset duration for a frequency point receives function
In rate, the difference of Reference Signal Received Power and its minimum access threshold value is all larger than predetermined level threshold value each time, it is determined that
The frequency point is frequency point to be selected；
Second determination unit, for according to preset rules it is described wait select in frequency point determine a frequency point be the target frequency point.
10. mobile terminal according to claim 9, which is characterized in that second determination unit includes:
Computation subunit refers at least twice for calculate that respectively frequency point to be selected gravity treatment measurement in the preset duration obtains
In signal reception power, minimum reference signal receives the difference of power and its minimum access threshold value；
Determine subelement, the minimum reference signal for respectively frequency point to be selected receives power and its minimum access threshold value
Difference, using the maximum frequency point to be selected of difference as the target frequency point.
11. the mobile terminal according to any one of claim 7 to 10, which is characterized in that the mobile terminal also wraps
It includes:
Message reception module for the system message that received network side equipment is sent, and obtains the system message instruction
The narrowband Warning Mark position of frequency point and access threshold value.
12. the mobile terminal according to any one of claim 7 to 10, which is characterized in that the target network includes
LTE CAT-M network.
13. a kind of mobile terminal, which is characterized in that including processor, memory is stored on the memory and can be described
The network reselection program run on processor realizes such as claim 1 when the network reselection program is executed by the processor
The step of to network reselection method described in any one of 6.
14. a kind of computer readable storage medium, which is characterized in that be stored with network weight on the computer readable storage medium
Program is selected, such as network reselection described in any one of claims 1 to 6 is realized when the network reselection program is executed by processor
The step of method.
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| CN110290473B (en) * | 2018-03-19 | 2021-07-27 | 成都鼎桥通信技术有限公司 | Switching method and device |
| CN110708714B (en) * | 2018-07-10 | 2022-01-25 | 维沃移动通信有限公司 | Beam failure detection method, terminal and network equipment |
| CN109041100A (en) * | 2018-07-27 | 2018-12-18 | 润建通信股份有限公司 | A kind of method of big data assessment the NB-IoT network coverage and structure |
| CN110856190B (en) * | 2019-10-21 | 2022-05-13 | 中国移动通信集团江苏有限公司 | Signal quality improving method, device, equipment and medium |
| CN113141643B (en) * | 2020-01-20 | 2023-04-07 | 中移(上海)信息通信科技有限公司 | Anchor point residing method, terminal, system and storage medium |
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| CN105517077A (en) * | 2015-06-17 | 2016-04-20 | 广东通宇通讯股份有限公司 | Network re-election and switching method, base station and mobile terminal |
| CN106792931A (en) * | 2015-11-24 | 2017-05-31 | 展讯通信（上海）有限公司 | MTC terminal cell reselection control method and device |
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