CN107666695A - A kind of method and device of network switching - Google Patents
A kind of method and device of network switching Download PDFInfo
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- CN107666695A CN107666695A CN201610599699.7A CN201610599699A CN107666695A CN 107666695 A CN107666695 A CN 107666695A CN 201610599699 A CN201610599699 A CN 201610599699A CN 107666695 A CN107666695 A CN 107666695A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention provides a kind of method and device of network switching, wherein, the method for network switching includes：Terminal is obtained in the currently switching type between connection network and objective network；According to switching type, the terminal capability of acquisition objective network corresponding with switching type；According to the terminal capability of objective network, by terminal from current connection network switching to objective network.The present invention solves when carrying out S1 switchings between LTE network and 2G networks in the prior art, due to terminal capability query success rate is reduced caused by the whole terminal capability of inquiry and increase time delay from LTE network to 2G network switchings the problem of.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of method and device of network switching.
Background technology
At the initial stage of Long Term Evolution (LTE) network design, Generation Mobile Telecommunication System technology (2G) network and third generation movement
The covering of the communication technology (3G) network will be far longer than the covering of LTE network, and the covering of LTE network is covered using focus more,
This causes user terminal frequently can switch between LTE network and 2G networks or 3G network.
In TS36.300 agreements, when terminal switches between LTE network and 2G or 3G network, using S1 switching modes.
In S1 switching modes when switching between LTE network and 2G or 3G network, terminal needs when switching from LTE network to 2G or 3G network
The ability information of terminal is inquired about in advance, wherein, terminal capability includes 2G GSM EDGE wireless access networks-circuit switching
(GERAN-CS) ability and GSM EDGE wireless access networks-packet switch (GERAN-PS) ability, or 3G general land without
Line accesses (UTRA) ability.In addition, when terminal is from LTE network to 2G network switchings, S1 switching types are including a variety of, for example, electric
Packet switch (PS) switching of road domain dropping (CSFB), the circuit switching (CS) of single wireless voice calling continuity (SRVCC)
Switching, SRVCC PS and CS switching etc..For these S1 switching types, requirement of the 2G networks to terminal capability not phase
Together, for example, SRVCC CS switchings require that terminal has GERAN-CS abilities, and CSFB PS switchings require that terminal has
GERAN-PS abilities.
But in the prior art, when carrying out S1 switchings between LTE network and 2G networks, whole terminals can be inquired about
Ability, so undoubtedly waste interface-free resources and reduce terminal capability inquiry success rate, and increase LTE network to
The time delay of 2G network switchings.
The content of the invention
During in order to solve to carry out S1 switchings between LTE network and 2G networks in the prior art, due to the whole terminal of inquiry
Terminal capability query success rate is reduced caused by ability and increase time delay from LTE network to 2G network switchings the problem of, this hair
It is bright to provide a kind of method and device of network switching.
In order to solve the above-mentioned technical problem, in a first aspect, the invention provides a kind of method of network switching, including：
Terminal is obtained in the currently switching type between connection network and objective network；
According to the switching type, the terminal capability of acquisition objective network corresponding with the switching type；
According to the terminal capability of the objective network, by the terminal from the current connection network switching to the target
Network.
Alternatively, the switching type includes：Circuit domain dropping CSFB packet switch PS switchings, single wireless voice are exhaled
Continuity SRVCC circuit is made to exchange CS switchings and SRVCC PS and CS switching.
Alternatively, it is described obtain terminal currently connection network and objective network between switching type the step of include：
The measurement report that receiving terminal is sent, and according to the switching target small area of measurement report acquisition objective network；According to described
The terminal capability of the cell ability of switching target small area and the current connection network, obtains the switching type.
Alternatively, the cell ability according to the switching target small area and the current terminal energy for connecting network
Power, the step of obtaining the switching type, include：When the switching target small area, support network voice protocol VoIP and S1 switch,
The terminal capability of the currently connection network supports the switching between current connection network and objective network, and during support CSFB,
The PS that the switching type got is CSFB switches；When VoIP, support S1 switchings, institute are not supported in the switching target small area
When stating the switching between the current connection network of terminal capability support of current connection network and objective network, and supporting SRVCC, obtain
The CS that the switching type got is SRVCC switches；When VoIP, support double-transmission mode are not supported in the switching target small area
DTM and S1 switchings, the terminal capability of the current connection network support the switching between current connection network and objective network, and
When supporting SRVCC, the switching type got switches for SRVCC PS and CS.
Alternatively, according to the switching type, the terminal capability of objective network corresponding with the switching type is obtained
Step includes：When the PS switchings that the switching type is CSFB, the corresponding objective network of PS switchings with the CSFB is obtained
GSM EDGE wireless access networks-packet switch GERAN-PS abilities；When the CS switchings that the switching type is SRVCC, obtain
Take and the GSM EDGE wireless access networks of the corresponding objective network of the CS of SRVCC switchings-circuit switching GERAN-CS abilities；
When PS and the CS switching that the switching type is SRVCC, the corresponding objective network of PS and CS switching with the SRVCC is obtained
GERAN-PS abilities and GERAN-CS abilities.
Alternatively, it is described when the PS switchings that the switching type is CSFB, obtain corresponding with the PS switchings of the CSFB
Objective network GSM EDGE wireless access networks-packet switch GERAN-PS abilities the step of include：When the switching type
When switching for CSFB PS, base station sends first terminal capabilities request message to the terminal；Wherein, the first terminal ability
GERAN-PS identification fields are carried in request message；The terminal is received to be reported according to the first terminal capabilities request message
First terminal ability information；Wherein, the first terminal ability information carries the GERAN-PS ability informations of objective network；
According to the first terminal ability information, the GERAN-PS abilities are obtained.
Alternatively, it is described when the CS switchings that the switching type is SRVCC, obtain and the CS of SRVCC switchings pair
The step of GSM EDGE wireless access networks for the objective network answered-circuit switching GERAN-CS abilities, includes：When the switching class
During the CS switchings that type is SRVCC, base station sends second terminal capabilities request message to the terminal；Wherein, the second terminal
GERAN-CS identification fields are carried in capabilities request message；The terminal is received according to the second terminal capabilities request message
The second terminal ability information reported；Wherein, the second terminal ability information carries the GERAN-CS abilities of objective network
Information；According to the second terminal ability information, the GERAN-CS abilities are obtained.
Alternatively, it is described when PS and the CS switching that the switching type is SRVCC, obtain with the PS of the SRVCC and
Include corresponding to CS switchings the step of the GERAN-PS abilities and GERAN-CS abilities of objective network：When the switching type is
During SRVCC PS and CS switching, base station sends third terminal capabilities request message to the terminal；Wherein, the third terminal
GERAN-PS and GERAN-CS identification fields are carried in capabilities request message；The terminal is received according to the third terminal energy
The third terminal ability information that power request message reports；Wherein, the third terminal ability information carries objective network
GERAN-PS and GERAN-CS ability informations；According to the third terminal ability information, obtain the GERAN-PS abilities and
GERAN-CS abilities.
Second aspect, the invention provides a kind of device of network switching, including：
First acquisition module, for obtaining terminal in the currently switching type between connection network and objective network；
Second acquisition module, for according to the switching type, obtaining objective network corresponding with the switching type
Terminal capability；
Handover module, for the terminal capability according to the objective network, the terminal is currently connected into network from described
Switch to the objective network.
Alternatively, the switching type includes：Circuit domain dropping CSFB packet switch PS switchings, single wireless voice are exhaled
Continuity SRVCC circuit is made to exchange CS switchings and SRVCC PS and CS switching.
Alternatively, first acquisition module includes：Receiving unit, the measurement report sent for receiving terminal, and root
The switching target small area of objective network is obtained according to the measurement report；First acquisition unit, for small according to the switching target
The terminal capability of the cell ability in area and the current connection network, obtains the switching type.
Alternatively, the first acquisition unit is used for, when the switching target small area support network voice protocol VoIP and
S1 switches, and the terminal capability of the current connection network supports the switching between current connection network and objective network, and supports
During CSFB, the switching type got switches for CSFB PS；When VoIP, support S1 are not supported in the switching target small area
Switching, the terminal capability of the current connection network supports the switching between current connection network and objective network, and supports
During SRVCC, the switching type got switches for SRVCC CS；When VoIP is not supported in the switching target small area, support
Double-transmission mode DTM and S1 switch, the terminal capability of the current connection network support current connection network and objective network it
Between switching, and when supporting SRVCC, PS and CS that the switching type that gets is SRVCC switch.
Alternatively, second acquisition module includes：Second acquisition unit, for as the PS that the switching type is CSFB
During switching, GSM EDGE wireless access networks-packet switch with the corresponding objective network of PS switchings of the CSFB is obtained
GERAN-PS abilities；3rd acquiring unit, when the CS switchings that the switching type is SRVCC, obtain the CS with the SRVCC
The GSMEDGE wireless access networks of objective network corresponding to switching-circuit switching GERAN-CS abilities；4th acquiring unit, is used for
When PS and the CS switching that the switching type is SRVCC, the corresponding objective network of PS and CS switching with the SRVCC is obtained
GERAN-PS abilities and GERAN-CS abilities.
Alternatively, the second acquisition unit is used for, and when the PS switchings that the switching type is CSFB, base station is to described
Terminal sends first terminal capabilities request message；Wherein, GERAN-PS marks are carried in the first terminal capabilities request message
Character learning section；Receive the first terminal ability information that the terminal reports according to the first terminal capabilities request message；Wherein, institute
State the GERAN-PS ability informations that first terminal ability information carries objective network；According to the first terminal ability information,
Obtain the GERAN-PS abilities.
Alternatively, the 3rd acquiring unit is used for, and when the CS switchings that the switching type is SRVCC, base station is to institute
State terminal and send second terminal capabilities request message；Wherein, GERAN-CS is carried in the second terminal capabilities request message
Identification field；Receive the second terminal ability information that the terminal reports according to the second terminal capabilities request message；Wherein,
The second terminal ability information carries the GERAN-CS ability informations of objective network；Believed according to the second terminal ability
Breath, obtains the GERAN-CS abilities.
Alternatively, the 4th acquiring unit is used for, when PS and the CS switching that the switching type is SRVCC, base station
Third terminal capabilities request message is sent to the terminal；Wherein, carried in the third terminal capabilities request message
GERAN-PS and GERAN-CS identification fields；Receive the terminal reports according to the third terminal capabilities request message the 3rd
Terminal ability information；Wherein, the third terminal ability information carries GERAN-PS the and GERAN-CS abilities of objective network
Information；According to the third terminal ability information, the GERAN-PS abilities and GERAN-CS abilities are obtained.
The beneficial effects of the invention are as follows：
The method of network switching provided by the invention, terminal is obtained first and is connected currently between network and objective network
Switching type, then according to switching type, the terminal capability of acquisition objective network corresponding with switching type, finally according to target
The terminal capability of network, by terminal from current connection network switching to objective network.So, the present invention for different by cutting
Type is changed, the terminal capability of objective network corresponding with switching type is obtained, that is, passes through the end for obtaining objective network of selectivity
End ability, solve in the prior art between LTE network and 2G networks during progress S1 switchings, due to the whole terminal capability of inquiry
It is caused reduce terminal capability query success rate and increase time delay from LTE network to 2G network switchings the problem of, saved sky
Mouth resource, improves the success rate of terminal capability inquiry, and reduces LTE network to time delay during 2G network switchings, improves
The stability and user's susceptibility of switching.
Brief description of the drawings
Fig. 1 represents the step flow chart of the method for network switching in the first embodiment of the present invention；
Fig. 2 represents the step flow chart of the method for network switching in the second embodiment of the present invention；
Fig. 3 represents the structured flowchart of the device of network switching in the third embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
First embodiment：
As shown in figure 1, for the step flow chart of the method for network switching in the first embodiment of the present invention, this method includes
Following steps：
Step 101, terminal is obtained in the currently switching type between connection network and objective network.
In this step, base station obtains terminal current in terminal by before currently connecting network switching to objective network
Connect the switching type between network and objective network.Specifically, currently connection network is the network before terminal switching, this is current
It can be LTE network to connect network；Objective network is the network after terminal switching, and the objective network can be 2G networks.In addition,
PS switchings, SRVCC CS switchings and SRVCC that switching type can be including CSFB PS and CS switching.
Step 102, according to switching type, the terminal capability of acquisition objective network corresponding with switching type.
In this step, specifically, getting terminal in the currently switching type between connection network and objective network
When, can be according to the switching type, the terminal capability of acquisition objective network corresponding with switching type.
For example, when the PS switchings that switching type is CSFB, can obtain and the corresponding objective network of CSFB PS switchings
GERAN-PS abilities；When the CS switchings that switching type is SRVCC, can obtain and the corresponding target of SRVCC CS switchings
The GERAN-CS abilities of network；When PS and the CS switching that switching type is SRVCC, it can obtain and be cut with SRVCC PS and CS
The GERAN-PS abilities and GERAN-CS abilities of objective network corresponding to changing.
Step 103, according to the terminal capability of objective network, by terminal from current connection network switching to objective network.
In this step, specifically, base station is in the terminal capability according to objective network, terminal is cut from current connection network
When shifting to objective network, S1 handover request message can be constructed according to the terminal capability of objective network, and to mobile management unit
(MME) the S1 handover request message is sent, then performs and switches S1 of the terminal from current connection network switching to objective network
Flow.For example, currently connection network is LTE network, when objective network is 2G networks, terminal is performed from LTE network to 2G networks
The S1 switching flows of switching.
So, the present embodiment is currently connecting the switching type between network and objective network by obtaining terminal, then
According to switching type, the terminal capability of acquisition objective network corresponding with switching type, finally according to the terminal energy of objective network
Power, by terminal from current connection network switching to objective network, solve and carried out in the prior art between LTE network and 2G networks
When S1 switches, due to reduced caused by the whole terminal capability of inquiry terminal capability query success rate and increase LTE network to
The problem of time delay of 2G network switchings, interface-free resources are saved, improved the success rate of terminal capability inquiry, and reduced
LTE network improves the stability and user's susceptibility of switching to time delay during 2G network switchings.
Second embodiment：
As shown in Fig. 2 for the step flow chart of the method for network switching in the second embodiment of the present invention, this method includes
Following steps：
Step 201, the measurement report that receiving terminal is sent, and it is small according to the switching target of measurement report acquisition objective network
Area.
In this step, specifically, base station receiving terminal send measurement report, and according to measurement report obtain target network
The switching target small area of network.Specifically, the switching target small area of objective network can be 2G cell.
Step 202, according to the cell ability of switching target small area and the terminal capability of current connection network, switching is obtained
Type.
In this step, specifically, whether the cell ability of switching target small area can be supported including switching target small area
VoIP, S1 switch and DTM.The terminal capability of current connection network may include whether to support currently to connect network and objective network
Between switching and whether support CSFB and SRVCC.
Specifically, cut in the cell ability according to switching target small area and the terminal capability of current connection network, acquisition
When changing type, when VoIP and S1 switchings are supported in switching target small area, the current terminal capability for connecting network supports current connection net
Switching between network and objective network, and during support CSFB, the switching type got switches for CSFB PS；When switching target
Cell does not support VoIP, supports S1 switchings, the current terminal capability for connecting network support current connection network and objective network it
Between switching, and when supporting SRVCC, the CS that the switching type that gets is SRVCC switches；When switching target small area is not supported
VoIP, supports DTM and S1 switchings, and the current terminal capability for connecting network supports cutting between current connection network and objective network
When changing, and supporting SRVCC, the switching type got switches for SRVCC PS and CS.
In addition, specifically, when getting switching type, into step 203, step 204 or step 205.
Step 203, when the PS switchings that switching type is CSFB, obtain and the CSFB corresponding objective network of PS switchings
GSM EDGE wireless access networks-packet switch GERAN-PS abilities.
In this step, specifically, when the PS switchings that the switching type got is CSFB, can obtain with CSFB's
The GERAN-PS abilities of objective network corresponding to PS switchings.Specifically, in specific implementation, base station can send first to terminal
Terminal capability request message；Wherein, GERAN-PS identification fields are carried in first terminal capabilities request message；Then receive eventually
Hold the first terminal ability information reported according to first terminal capabilities request message；Wherein, first terminal ability information carries
The GERAN-PS ability informations of objective network；Finally according to first terminal ability information, GERAN-PS abilities are obtained.
Certainly, herein it should be noted that when all ability informations of the objective network of terminal have been preserved in base station
When (GERAN-PS abilities and GERAN-CS abilities), then it can not have to obtain and switching type pair again according to switching type again
The terminal capability for the objective network answered, at this point it is possible to directly by terminal from current connection network switching to objective network.
Step 204, when the CS switchings that switching type is SRVCC, the corresponding objective network of CS switchings with SRVCC is obtained
GSM EDGE wireless access networks-circuit switching GERAN-CS abilities.
In this step, specifically, when the CS switchings that the switching type got is SRVCC, the CS with SRVCC is obtained
The GERAN-CS abilities of objective network corresponding to switching.Specifically, in specific implementation, base station can send second eventually to terminal
Hold capabilities request message；Wherein, GERAN-CS identification fields are carried in second terminal capabilities request message；Then receiving terminal
The second terminal ability information reported according to second terminal capabilities request message；Wherein, second terminal ability information carries mesh
Mark the GERAN-CS ability informations of network；Finally according to second terminal ability information, GERAN-CS abilities are obtained.
Step 205, when PS and the CS switching that switching type is SRVCC, obtain corresponding with SRVCC PS and CS switching
The GERAN-PS abilities and GERAN-CS abilities of objective network.
In this step, specifically, when the switching type got be SRVCC PS and CS switching when, can obtain with
The GERAN-PS abilities and GERAN-CS abilities of objective network corresponding to SRVCC PS and CS switching.Specifically, implementing
When, base station can send third terminal capabilities request message to terminal；Wherein, carried in third terminal capabilities request message
GERAN-PS and GERAN-CS identification fields；Then the third terminal that receiving terminal reports according to third terminal capabilities request message
Ability information；Wherein, third terminal ability information carries GERAN-PS the and GERAN-CS ability informations of objective network；Finally
According to third terminal ability information, GERAN-PS abilities and GERAN-CS abilities are obtained.
Step 206, according to the terminal capability of objective network, by terminal from current connection network switching to objective network.
In this step, specifically, base station is in the terminal capability according to objective network, terminal is cut from current connection network
, can be according to the first terminal ability information, second terminal ability information or the 3rd end that terminal reports when shifting to objective network
Ability information is held, constructs S1 handover request message, and the S1 handover request message is sent to MME, performs and connects terminal from currently
Network switching is connect to the S1 switching flows of objective network.For example, currently connection network is LTE network, objective network is 2G networks
When, perform S1 switching flow of the terminal from LTE network to 2G network switchings.
So, the present embodiment is currently connecting the switching type between network and objective network according to the terminal got,
The terminal capability of objective network corresponding to acquisition, finally according to the terminal capability of objective network, terminal is connected into network from current
Switch to objective network.So, the present embodiment is according to the switching type of acquisition, the terminal capability of objective network corresponding to acquisition,
Solve in the prior art between LTE network and 2G networks during progress S1 switchings, due to caused by the whole terminal capability of inquiry
Reduce terminal capability query success rate and increase time delay from LTE network to 2G network switchings the problem of, saved interface-free resources,
The success rate of terminal capability inquiry is improved, and reduces LTE network to time delay during 2G network switchings, improves switching
Stability and user's susceptibility.
3rd embodiment：
As shown in figure 3, being the structured flowchart of the device of network switching in the third embodiment of the present invention, the device includes：
First acquisition module 301, for obtaining terminal in the currently switching type between connection network and objective network；
Second acquisition module 302, for according to switching type, the terminal energy of acquisition objective network corresponding with switching type
Power；
Handover module 303, for the terminal capability according to objective network, by terminal from current connection network switching to target
Network.
Alternatively, switching type includes：Circuit domain dropping CSFB packet switch PS switchings, single wireless audio call connect
Continuous property SRVCC circuit exchanges CS switchings and SRVCC PS and CS switching.
Alternatively, the first acquisition module 301 includes：Receiving unit, for receiving unit, the survey sent for receiving terminal
Amount report, and according to the switching target small area of measurement report acquisition objective network；First acquisition unit, for according to switching target
The terminal capability of the cell ability of cell and current connection network, obtains switching type.
Alternatively, first acquisition unit is used for, and when switching target small area, support network voice protocol VoIP and S1 switch, when
The terminal capability of preceding connection network supports the switching between current connection network and objective network, and during support CSFB, gets
Switching type be CSFB PS switch；When VoIP, support S1 switchings, the current end for connecting network are not supported in switching target small area
End ability supports the switching between current connection network and objective network, and during support SRVCC, the switching type got is
SRVCC CS switchings；When VoIP is not supported in switching target small area, support double-transmission mode DTM and S1 switch, and currently connect network
Terminal capability support switching between current connection network and objective network, and when supporting SRVCC, the switching type that gets
Switch for SRVCC PS and CS.
Alternatively, the second acquisition module 302 includes：Second acquisition unit, for switching as the PS that switching type is CSFB
When, obtain GSM EDGE wireless access networks-packet switch GERAN-PS abilities with the CSFB corresponding objective network of PS switchings；
3rd acquiring unit, when the CS switchings that switching type is SRVCC, obtain and the SRVCC corresponding objective network of CS switchings
GSM EDGE wireless access networks-circuit switching GERAN-CS abilities；4th acquiring unit, for being SRVCC's when switching type
When PS and CS switches, GERAN-PS abilities and GERAN-CS energy with the SRVCC corresponding objective network of PS and CS switching are obtained
Power.
Alternatively, second acquisition unit is used for, and when the PS switchings that switching type is CSFB, base station sends first to terminal
Terminal capability request message；Wherein, GERAN-PS identification fields are carried in first terminal capabilities request message；Receiving terminal root
The first terminal ability information reported according to first terminal capabilities request message；Wherein, first terminal ability information carries target
The GERAN-PS ability informations of network；According to first terminal ability information, GERAN-PS abilities are obtained.
Alternatively, the 3rd acquiring unit is used for, and when the CS switchings that switching type is SRVCC, base station sends the to terminal
Two terminal capability request messages；Wherein, GERAN-CS identification fields are carried in second terminal capabilities request message；Receiving terminal
The second terminal ability information reported according to second terminal capabilities request message；Wherein, second terminal ability information carries mesh
Mark the GERAN-CS ability informations of network；According to second terminal ability information, GERAN-CS abilities are obtained.
Alternatively, the 4th acquiring unit is used for, and when PS and the CS switching that switching type is SRVCC, base station is sent out to terminal
Send third terminal capabilities request message；Wherein, GERAN-PS and GERAN-CS marks are carried in third terminal capabilities request message
Character learning section；The third terminal ability information that receiving terminal reports according to third terminal capabilities request message；Wherein, third terminal energy
Force information carries GERAN-PS the and GERAN-CS ability informations of objective network；According to third terminal ability information, obtain
GERAN-PS abilities and GERAN-CS abilities.
So, the device in the present embodiment obtains terminal in currently connection network and objective network by the first acquisition module
Between switching type, and by the second acquisition module according to switching type, obtain objective network corresponding with switching type
Terminal capability, the terminal capability finally by handover module according to objective network, by terminal from current connection network switching to mesh
Network is marked, is solved in the prior art between LTE network and 2G networks during progress S1 switchings, due to the whole terminal capability of inquiry
It is caused reduce terminal capability query success rate and increase time delay from LTE network to 2G network switchings the problem of, saved sky
Mouth resource, the success rate of terminal capability inquiry is improved, improve the stability and user's susceptibility of switching.
Above-described is the preferred embodiment of the present invention, it should be pointed out that is come for the ordinary person of the art
Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (16)
- A kind of 1. method of network switching, it is characterised in that including：Terminal is obtained in the currently switching type between connection network and objective network；According to the switching type, the terminal capability of acquisition objective network corresponding with the switching type；According to the terminal capability of the objective network, by the terminal from the current connection network switching to the target network Network.
- 2. according to the method for claim 1, it is characterised in that the switching type includes：Circuit domain dropping CSFB point Group exchanges PS switchings, single wireless voice calling continuity SRVCC circuit exchanges CS switchings and SRVCC PS and CS are cut Change.
- 3. according to the method for claim 2, it is characterised in that the acquisition terminal is in currently connection network and objective network Between switching type the step of include：The measurement report that receiving terminal is sent, and according to the switching target small area of measurement report acquisition objective network；According to the cell ability of the switching target small area and the terminal capability of the current connection network, the switching is obtained Type.
- 4. according to the method for claim 3, it is characterised in that the cell ability according to the switching target small area with And the terminal capability of the current connection network, the step of obtaining the switching type, include：When network voice protocol VoIP and S1 switching, the terminal capability of the current connection network are supported in the switching target small area When supporting the switching between current connection network and objective network, and supporting CSFB, the switching type got is CSFB PS switching；When VoIP is not supported in the switching target small area, support S1 switchings, the terminal capability of the current connection network is supported ought Switching between preceding connection network and objective network, and during support SRVCC, the switching type got is SRVCC CS Switching；When VoIP is not supported in the switching target small area, support double-transmission mode DTM and S1 switch, the current connection network Terminal capability supports the switching between current connection network and objective network, and when supporting SRVCC, the switching class got The PS and CS that type is SRVCC switch.
- 5. according to the method for claim 2, it is characterised in that it is described according to the switching type, obtain and the switching The step of terminal capability of objective network corresponding to type, includes：When the PS switchings that the switching type is CSFB, the GSM with the corresponding objective network of PS switchings of the CSFB is obtained EDGE wireless access networks-packet switch GERAN-PS abilities；When the CS switchings that the switching type is SRVCC, obtain and the corresponding objective network of CS switchings of the SRVCC GSM EDGE wireless access networks-circuit switching GERAN-CS abilities；When PS and the CS switching that the switching type is SRVCC, the corresponding target of PS and CS switching with the SRVCC is obtained The GERAN-PS abilities and GERAN-CS abilities of network.
- 6. according to the method for claim 5, it is characterised in that it is described when the PS switchings that the switching type is CSFB, Obtain GSM EDGE wireless access networks-packet switch GERAN-PS abilities with the corresponding objective network of PS switchings of the CSFB The step of include：When the PS switchings that the switching type is CSFB, base station sends first terminal capabilities request message to the terminal；Its In, carry GERAN-PS identification fields in the first terminal capabilities request message；Receive the first terminal ability information that the terminal reports according to the first terminal capabilities request message；Wherein, it is described First terminal ability information carries the GERAN-PS ability informations of objective network；According to the first terminal ability information, the GERAN-PS abilities are obtained.
- 7. according to the method for claim 5, it is characterised in that it is described when the CS switchings that the switching type is SRVCC, Obtain and the GSM EDGE wireless access networks of the corresponding objective network of CS switchings of the SRVCC-circuit switching GERAN-CS energy The step of power, includes：When the CS switchings that the switching type is SRVCC, base station sends second terminal capabilities request message to the terminal；Its In, carry GERAN-CS identification fields in the second terminal capabilities request message；Receive the second terminal ability information that the terminal reports according to the second terminal capabilities request message；Wherein, it is described Second terminal ability information carries the GERAN-CS ability informations of objective network；According to the second terminal ability information, the GERAN-CS abilities are obtained.
- 8. according to the method for claim 5, it is characterised in that described when the PS and CS that the switching type is SRVCC are cut When changing, obtain and the GERAN-PS abilities of the corresponding objective network of PS and CS switching of the SRVCC and GERAN-CS abilities Step includes：When PS and the CS switching that the switching type is SRVCC, base station sends third terminal capability requests to the terminal and disappeared Breath；Wherein, GERAN-PS and GERAN-CS identification fields are carried in the third terminal capabilities request message；Receive the third terminal ability information that the terminal reports according to the third terminal capabilities request message；Wherein, it is described Third terminal ability information carries GERAN-PS the and GERAN-CS ability informations of objective network；According to the third terminal ability information, the GERAN-PS abilities and GERAN-CS abilities are obtained.
- A kind of 9. device of network switching, it is characterised in that including：First acquisition module, for obtaining terminal in the currently switching type between connection network and objective network；Second acquisition module, for according to the switching type, the terminal of acquisition objective network corresponding with the switching type Ability；Handover module, for the terminal capability according to the objective network, the terminal is currently connected into network switching from described To the objective network.
- 10. device according to claim 9, it is characterised in that the switching type includes：Circuit domain dropping CSFB point Group exchanges PS switchings, single wireless voice calling continuity SRVCC circuit exchanges CS switchings and SRVCC PS and CS are cut Change.
- 11. device according to claim 10, it is characterised in that first acquisition module includes：Receiving unit, the measurement report sent for receiving terminal, and according to the switching of measurement report acquisition objective network Target cell；First acquisition unit, the terminal for the cell ability according to the switching target small area and the current connection network Ability, obtain the switching type.
- 12. device according to claim 11, it is characterised in that the first acquisition unit is used for, when the switching mesh Mark cell and support network voice protocol VoIP and S1 switching, the terminal capability of the current connection network supports current connection network Switching between objective network, and during support CSFB, the switching type got switches for CSFB PS；Cut when described Change Target cell and do not support VoIP, support S1 switchings, the terminal capability of the current connection network support current connection network and Switching between objective network, and during support SRVCC, the switching type got switches for SRVCC CS；Cut when described Change Target cell and do not support VoIP, support double-transmission mode DTM and S1 switching, the terminal capability of the current connection network is supported Switching between current connection network and objective network, and during support SRVCC, the switching type got is SRVCC's PS and CS switchings.
- 13. device according to claim 10, it is characterised in that second acquisition module includes：Second acquisition unit, for when the PS switchings that the switching type is CSFB, obtaining and the PS of CSFB switchings pair The GSM EDGE wireless access networks for the objective network answered-packet switch GERAN-PS abilities；3rd acquiring unit, when the CS switchings that the switching type is SRVCC, obtain corresponding with the CS switchings of the SRVCC Objective network GSM EDGE wireless access networks-circuit switching GERAN-CS abilities；4th acquiring unit, for when PS and the CS switching that the switching type is SRVCC, obtaining the PS with the SRVCC With CS switching corresponding to objective network GERAN-PS abilities and GERAN-CS abilities.
- 14. device according to claim 13, it is characterised in that the second acquisition unit is used for, when the switching class During the PS switchings that type is CSFB, base station sends first terminal capabilities request message to the terminal；Wherein, the first terminal energy GERAN-PS identification fields are carried in power request message；The terminal is received according in the first terminal capabilities request message The first terminal ability information of report；Wherein, the first terminal ability information carries the GERAN-PS abilities letter of objective network Breath；According to the first terminal ability information, the GERAN-PS abilities are obtained.
- 15. device according to claim 13, it is characterised in that the 3rd acquiring unit is used for, when the switching class During the CS switchings that type is SRVCC, base station sends second terminal capabilities request message to the terminal；Wherein, the second terminal GERAN-CS identification fields are carried in capabilities request message；The terminal is received according to the second terminal capabilities request message The second terminal ability information reported；Wherein, the second terminal ability information carries the GERAN-CS abilities of objective network Information；According to the second terminal ability information, the GERAN-CS abilities are obtained.
- 16. device according to claim 13, it is characterised in that the 4th acquiring unit is used for, when the switching class When PS and the CS switching that type is SRVCC, base station sends third terminal capabilities request message to the terminal；Wherein, the described 3rd GERAN-PS and GERAN-CS identification fields are carried in terminal capability request message；It is whole according to the described 3rd to receive the terminal The third terminal ability information that end capabilities request message reports；Wherein, the third terminal ability information carries objective network GERAN-PS and GERAN-CS ability informations；According to the third terminal ability information, obtain the GERAN-PS abilities and GERAN-CS abilities.
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