CN105657762A - Method, device and system for maintaining voice service continuity - Google Patents
Method, device and system for maintaining voice service continuity Download PDFInfo
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- CN105657762A CN105657762A CN201610178207.7A CN201610178207A CN105657762A CN 105657762 A CN105657762 A CN 105657762A CN 201610178207 A CN201610178207 A CN 201610178207A CN 105657762 A CN105657762 A CN 105657762A
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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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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Abstract
The invention discloses a method, device and system for maintaining voice service continuity. According to the method for maintaining voice service continuity, when UE fails in requirement for establishing new talking connection under VoLTE and needs to fall back to a CS domain, distinct system network information around the UE can be automatically obtained, and data of the distinct system network information can be transmitted to a network side; under the situation that a signal measurement value of a distinct system can meet the service demand of the UE, the network side and the UE cooperate with each other to complete the SRVCC switching process, and consequently talking connection service on the UE is transferred to a distinct system network meeting requirements. Due to the fact that the UE can automatically obtain the distinct system information in the surroundings and transmit the information to the network side when needing to fall back to the CS domain, the network side can conveniently arrange SRVCC switching in time according to the received information; in the whole switching process, users who have established talks previous to switching will not perceive the specific switching or talk disconnecting process, and therefore talk continuity is maintained.
Description
Technical field
The present invention relates to communication technical field, say more specifically, relate to a kind of methods, devices and systems keeping voice business continuity.
Background technology
VoLTE (VoiceoverLongTermEvolution, the voice technology based on long-term evolution) is the speech business based on IMS (IP multi-media subsystem). Specifically, VoLTE is a kind of IP data transmission technology, it is not necessary to 2G/3G net, whole service bearer is on 4G network, it may be achieved data and the speech business unification under consolidated network. Owing to VoLTE technology can provide the data service of two-forty, and can avoiding the dependency to existing 2G or 3G cellular network, therefore research and popularization to this technology in recent years deepens continuously.
In the application of reality, UE (UserEquipment, user equipment) usually needs to set up call with multiple terminal and is connected. If user A and user B is carrying out the voice call under VoLTE, now user A thinks to add a-road-through words again, and the call with user B will first be kept by it, then initiates calling to user C. But, when LTE network fault or server are busy, the calling that user A initiates to user C can be refused by network side, when UE carry out retry call still failed, new call call request just needs from VoLTE based on PS territory fall back to circuit switching (CS) territory network carry out. Owing to the change of UE interconnection network switches, now the first via based on packet switched ps domain is conversed, and namely call between user A and user B connects and just cannot continue normal maintenance. In prior art, the mode that process first via call connects, often directly by first via call hang-ups or hang-up, then initiates new call connection request from PS domain dropping to CS territory.
After first via call being hung up, two terminals that first via call connects can not receive any message of network side, then, after default timer time-out, first via call connects also can be hung up automatically. It thus is seen that in prior art when UE needs handover network, the processing mode that the call set up before is connected finally all can cause conversing connect hang up termination, affect the normal use of user.
Summary of the invention
In view of this, the present invention provides a kind of methods, devices and systems keeping voice business continuity, and to overcome due to the switching of UE network in prior art, the call before set up connects the user being hung up and cause and cannot normally use, experience poor problem.
For achieving the above object, the present invention provides following technical scheme:
Keep a method for voice business continuity, it be applied to UE end, comprising:
UE initiates N road call connection request under VoLTE to network side, and N is integer and is more than or equal to 2;
When described N road call connection request is refused by described network side, described UE obtains the different system network information around it, and described different system is the network system being different from LTE system;
Described UE sends isosystem measurement report to described network side, and the report of described isosystem measurement comprises the described different system network information;
Receive described network side when the signal measurements judged in the described different system network information meets described UE business demand, the single radio frequency continuous voice call SRVCC sent switches instruction, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1.
Optionally, after described SRVCC has switched, also comprise:
Described UE described different system network after handover is initiated call connection request.
Optionally, the report of described isosystem measurement also comprises reason value, and described reason value is instruction LTE network fault or the busy indication information of server.
Keep a method for voice business continuity, it be applied to network side, comprising:
When LTE network fault or server are busy, the N road call connection request that network side refusal UE initiates under VoLTE, N is integer and is more than or equal to 2;
Receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Whether the signal measurements judged in the described different system network information meets the business demand of described UE;
If, then send SRVCC switching instruction to described UE, described SRVCC switches instruction, and for controlling, described UE coordinates described network side to complete SRVCC switching, M road call transfer to the signal measurements connected before making described UE can meet on the different system network of described UE business demand, and described M equals N-1.
Optionally, before UE described in described network side direction sends SRVCC switching instruction, also comprising: carry out SRVCC switchable resource preparation, described SRVCC switchable resource prepares to comprise: the resource completing described different system network is reserved and carrying switch operating.
Keep a device for voice business continuity, it be applied to UE end, comprising:
Call request module, for initiating call connection request in N road under VoLTE to network side, N is integer and is more than or equal to 2;
Data obtaining module, when being refused by described network side for connection request of conversing on described N road, obtains the different system network information around it, and described different system is the network system being different from LTE system;
Report sending module, for sending isosystem measurement report to described network side, the report of described isosystem measurement comprises the described different system network information;
Network handover module, for receiving described network side when the signal measurements judged in the described different system network information meets described UE business demand, the SRVCC switching instruction sent, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1.
Optionally, described call request module also for: described network handover module perform SRVCC switch after, on described different system network after handover initiate call connection request.
Optionally, the isosystem measurement report that described report sending module sends also comprises reason value, and described reason value is instruction LTE network fault or the busy indication information of server.
Keep a device for voice business continuity, it be applied to network side, comprising:
Request processing module, for when LTE network fault or server are busy, refusing the N road call connection request that UE initiates under VoLTE, N is integer and is more than or equal to 2;
Report receiver module, for receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Judging module, whether the signal measurements for judging in the described different system network information meets the business demand of described UE;
Switching executing module, for when described judgement module judges the business demand that the signal measurements obtained in the different system network information meets described UE, SRVCC switching instruction is sent to described UE, described SRVCC switches instruction and coordinates described network side to complete SRVCC switching for described UE, M road call transfer to the signal measurements connected before making described UE can meet on the different system network of described UE business demand, and described M equals N-1.
Optionally, described switchable resource preparation module specifically for: complete that the resource of described different system network is reserved and carrying switch operating.
Keep a system for voice business continuity, comprise UE and network side:
Described UE is used for: initiate call connection request in N road under VoLTE to described network side, N is integer and is more than or equal to 2;
When described N road call connection request is refused by described network side, described UE obtains the different system network information around it, and described different system is the network system being different from LTE system;
Described UE sends isosystem measurement report to described network side, and the report of described isosystem measurement comprises the described different system network information;
Receive described network side when the signal measurements judged in the described different system network information meets described UE business demand, the SRVCC switching instruction sent, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1;
Described network side is used for: when LTE network fault or server are busy, the N road call connection request that described network side refusal UE initiates under VoLTE;
Receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Whether the signal measurements judged in the described different system network information meets the business demand of described UE;
If, then send SRVCC switching instruction to described UE, described SRVCC switches instruction, and for controlling, described UE coordinates described network side to complete SRVCC switching so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand.
Known via above-mentioned technical scheme, compared with prior art, the embodiment of the invention discloses a kind of method keeping voice business continuity, device and system, in the method for described maintenance voice business continuity, UE ask to set up under VoLTE new call connect unsuccessful and when needing to fall back on CS territory, can automatically obtain the different system network signal around it, and the isosystem measurement report comprising the different system network information is sent to network side, the signal measurements judged in the different system network information in network side can meet UE business demand, network side and UE have cooperatively interacted SRVCC handoff procedure, and the call set up under VoLTE before UE is connected business and is transferred on the different system network meeting requirement. owing to UE can the different system information of active obtaining around it when needing to fall CS territory after rise, and mail to network side, it is convenient to network side and arranges SRVCC handoff issues in time according to the information received, in whole handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus maintain the continuity of call, do not affect the experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is the disclosed method flow diagram keeping voice business continuity of the embodiment of the present invention;
Fig. 2 is the embodiment of the present invention another method flow diagram keeping voice business continuity disclosed;
Fig. 3 is SRVCC switching sequence figure disclosed in the embodiment of the present invention;
Fig. 4 is the disclosed apparatus structure schematic diagram keeping voice business continuity of the embodiment of the present invention;
Fig. 5 is the embodiment of the present invention another apparatus structure schematic diagram keeping voice business continuity disclosed;
Fig. 6 is the disclosed system architecture schematic diagram keeping voice business continuity of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Referring to accompanying drawing 1, keep the method flow diagram of voice business continuity disclosed in the embodiment of the present invention, described method is applied to UE end, and as shown in Figure 1, the method can comprise:
Step 101:UE initiates N road call connection request under VoLTE to network side;
Wherein, described N is integer and is more than or equal to 2. In embodiments of the present invention, UE has at least set up a call under VoLTE and has connected, and the N road call request that therefore in step 101, UE initiates to network side is at least the 2nd tunnel call request.
Step 102: when described N road call connection request is refused by described network side, described UE obtains the different system network information around it;
Wherein, described different system is the network system being different from LTE system.
When LTE network system malfunctions or server are busy, the new call connection request that described UE initiates can be refused in described network side, thus causes new call to set up. Described UE can heavily try, namely after call connection establishment failure, again call connection request is initiated, wait the response of described network side, if call connection request is still refused in described network side, then in order to the needs that satisfied call connects, described UE can find other network system or network resource connect needs to meet the call of self. Therefore, described UE converses after connection request refused by described network side on described N road, it is possible to detection obtains around it other network systems except LTE system except, is also the network information of different system. The described network information can comprise network system types and corresponding signal measurements; If described different system can be gsm system or other 2G/3G network system.
It should be noted that, not to whether described UE sending call connection request and heavily tries after being rejected in the embodiment of the present invention, and the number of times that initiation call connection heavily tries before UE obtains the different system network information around it is fixed restriction, during embody rule, can need to carry out corresponding configuration according to actual scene.
Step 103: send isosystem measurement report described in described UE to network side;
The report of described isosystem measurement comprises the described different system network information. Described isosystem measurement can also comprise reason value in reporting, described reason value is for indicating LTE network fault or server busy, and call connects the indication information that cannot set up.
Step 104: receive described network side when the signal measurements judged in the described different system network information meets described UE business demand, SRVCC (the SingleRadioVoiceCallContinuity sent, single radio frequency continuous voice call) switching instruction, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements.
After SRVCC has switched, the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand.
The call of described M road is the M road call having set up connection before on an LTE network, and therefore described M equals N-1. Certainly, in the process of SRVCC switching, set up in the M road call of connection on an LTE network before, also may comprising just, user's communication is complete, user trigger hang up operation call, after therefore SRVCC has switched, actual transfer is just less than N-1 to the call quantity on different system network, ensureing that under the prerequisite that described M is positive integer, described M also may equal N-2, N-3 etc. It should be noted that, complete owing to conversing, user independently triggers the call hanging up operation, does not affect the useful effect that the present embodiment solves prior art problem.
The described different system network information may comprise more than network information, as the different system network around described UE can have 2G, 3G network (2G internet and 3G network all can segment again, as 2G can be subdivided into GSM, EDGE etc.) etc.
Specifically, after described network side receives isosystem measurement report, can according to the information in the report of described isosystem measurement and its other information grasped, network resource as shared by the call connection that described UE has set up, namely the minimum requirement of the signal measurements in the different system network information is different by the difference of current talking number of connection, therefore, the business demand of described UE whether will can be met according to current talking number of connection and different system described in other information comprehensive descision.
The signal measurements judged in the described different system network information in described network side meets described UE business demand (call of above-mentioned N road), the system network existing around described UE and can meeting whole (being at least currently whole) call of described UE and connect demand resource is described, now described network side can prepare the preparation of corresponding SRVCC switchable resource, and the resource that this switchable resource prepares to have comprised the different system network that can meet described UE business demand is reserved and carrying switch operating. After the corresponding SRVCC switchable resource preparation work in described network side completes, then sending SRVCC switching instruction to described UE, described UE and described network side have cooperatively interacted SRVCC blocked operation.
After SRVCC has switched, M road call transfer to the signal measurements connected on an LTE network before described UE can meet on the different system network of described UE business demand. Owing to being ready to after switchable resource works in described network side, the process that described UE performs SRVCC switching is very rapid, therefore the user of described M road call can not the concrete switching of perception or temporary broken words process, the normal talking of user can not be affected.
In the present embodiment, the method of described maintenance voice business continuity is applied to UE end, UE ask to set up under VoLTE new call connect unsuccessful and when needing to fall back on CS territory, can automatically obtain the different system network signal around it, and the isosystem measurement report comprising different system network signal is sent to network side, the signal measurements judged in the different system network information in network side can meet UE business demand, network side and UE have cooperatively interacted SRVCC handoff procedure, and the call set up under VoLTE before UE is connected business and is transferred on the different system network meeting requirement. owing to UE can the different system information of active obtaining around it when needing to fall CS territory after rise, and mail to network side, it is convenient to network side and arranges SRVCC handoff issues in time according to the information received, in whole handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus maintain the continuity of call, do not affect the experience of user.
In other examples, after described SRVCC has switched, it is also possible to comprising: UE described different system network after handover is initiated call connection request. That is, after carrying out SRVCC switching, no matter all speech businesses of described UE are established the speech business that call connects before SRVCC switches, or the new call initiated connects speech business, be all based on switching after described different system real-time performance. Wherein, the new call of initiation connects speech business, it is possible to before comprising, UE asks call connection request that is that set up and that refused by network side under VoLTE, it is also possible to comprise the new call connection request that other UE initiates.
Fig. 2 is the method flow diagram that the embodiment of the present invention another kind disclosed keeps voice business continuity, and the method is applied to network side, and described method can comprise:
Step 201: when LTE network fault or server are busy, the N road call connection request that network side refusal UE initiates under VoLTE;
Wherein, described N is integer and is more than or equal to 2. In embodiments of the present invention, UE has at least set up a call under VoLTE and has connected, and the N road call request that therefore in step 201, UE initiates to network side is at least the 2nd tunnel call request.
When LTE network fault or server are busy, the call connection request that described UE initiates is had no idea to meet in described network side, in this case, and the request that new call that what described network side can refuse that described UE initiates set up connects.
Step 202: receive the isosystem measurement report that described UE sends;
Described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system.
LET network can not meet described UE set up new call connection request time, it is necessary to other network provides corresponding resource to meet the business demand of described UE. In the embodiment of the present invention, described UE when LTE network can not set up new call connect, need service bearer network from PS domain dropping to CS territory, the now different system network information of described UE active obtaining around it, the described different system network information can comprise network system types and corresponding strength of signal (signal measurements).
Described UE is after detection gets the above-mentioned different system network information, the isosystem measurement report comprising this information is sent to described network side, so that described network side is according to the information in the report of described isosystem measurement and its other information grasped, network resource as shared by the call connection that described UE has set up, whether different system described in comprehensive descision can meet the business demand of described UE.
Step 203: whether the signal measurements judged in the described different system network information meets the business demand of described UE; If it does, enter step 204;
Generally, described network side is it needs to be determined that the signal value of different system can reach certain intensity, to ensure that it can undertake on described UE the resource needed for business, resource needed for the business of described UE can comprise the resource needed for call connection that UE has set up, it is also possible to comprises the resource that described UE sets up new call connection and may need.
When step 203 judged result is no, do not process.
Step 204: send SRVCC switching instruction to described UE.
Described network side sends SRVCC switching and is indicated to described UE, and described SRVCC switches instruction for controlling described UE and described network side has cooperatively interacted SRVCC switching. After SRVCC handover success, M road call transfer to the signal measurements connected before described UE can meet on the different system network of described UE business demand. Wherein, the call of described M road is the M road call having set up connection before on an LTE network, and therefore described M equals N-1. Certainly, in the process of SRVCC switching, set up in the M road call of connection on an LTE network before, also may comprising just, user's communication is complete, user trigger hang up operation call, after therefore SRVCC has switched, actual transfer is just less than N-1 to the call quantity on different system network, ensureing that under the prerequisite that described M is positive integer, described M also may equal N-2, N-3 etc.
In the present embodiment, the method of described maintenance voice business continuity is applied to network side, network side is when LTE network fault or server are busy, the new call connection request that refusal UE initiates under VoLTE, then can according to receiving, the information that UE detects different systems axiol-ogy report around its of acquisition automatically judges whether different system can meet the business demand of UE, and according to judged result, when condition meets in time and UE cooperatively interacted SRVCC handoff procedure, thus the call set up under VoLTE before UE is connected business and is transferred on the different system network meeting requirement.Owing to UE can the active detecting different system information that obtains around it when needing to fall CS territory after rise, and mail to network side, it is convenient to network side and arranges SRVCC handoff issues in time according to the information received, in whole handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus maintain the continuity of call, do not affect the experience of user.
In the implementation of another possibility, before in above-described embodiment, UE described in network side direction described in step 204 sends SRVCC switching instruction, it is also possible to comprise the step that described network side carries out SRVCC switchable resource preparation. Wherein, described SRVCC switchable resource prepares to comprise: the resource completing described different system network is reserved and carrying switch operating. Like this, before UE described in described network side direction sends SRVCC switching instruction, first complete SRVCC switchable resource preparation work, thus after described UE receives SRVCC switching instruction, described network side and described UE directly can carry out SRVCC switching fast. Therefore, this kind of enforcement mode is conducive to improving the efficiency of SRVCC switching.
Disclosed in Fig. 3 embodiment of the present invention, SRVCC switching sequence figure, shown in Figure 3, and SRVCC switching wherein mainly can comprise following 5 parts:
1. when UE is carrying out language call under VoLTE, now to be set up new call, but due to network fault or server is busy etc. that reason causes new call successfully to set up, now UE can initiatively initiate the measurement of different system, and to E-UTRAN (connecting network part, mobile communication wireless network in LTE) send isosystem measurement report, wherein to carry measurement information and report reason value, reason value is for causing UE to fail to initiate new call under VoLTE due to network fault.
After 2.eNodeB makes switch decision according to the measurement report that UE reports, send SRVCC handover request message to MME.
3.MME passes through the Sv interface between MSCServer and initiates SRVCC flow process, and voice bearer is switched to MSC. MSCServer is initiated to the session switching flow of IMS domain while completing carrying switching flow, and instruction IMS domain completes the switching of session layer;
After 4.MSCServer completes the bearing resource preparation in CS territory, notify that MME, MME indicate UE to start switching by E-UTRAN by Sv interface.
5.UE coordinates network side to perform SRVCC process, initiates new calling after having switched on CS territory. Now all calls are all carried on CS territory, ensure that the continuity of speech business.
Describing method in detail in above-mentioned embodiment disclosed by the invention, method for the present invention can adopt the device of various ways to realize, and therefore the invention also discloses a kind of device, provides specific embodiment below and be described in detail.
Fig. 4 is the disclosed apparatus structure schematic diagram keeping voice business continuity of the embodiment of the present invention, and this application of installation is in UE end, and as shown in Figure 4, the device 40 of described maintenance business continuity can comprise:
Call request module 401, for initiating N road call connection request under VoLTE to network side;
Wherein, described N is integer and is more than or equal to 2. In embodiments of the present invention, UE has at least set up a call under VoLTE and has connected, and the N road call request that therefore UE initiates to network side is at least the 2nd tunnel call request.
Data obtaining module 402, when being refused by described network side for connection request of conversing on described N road, obtains the different system network information around it;
Described different system is the network system being different from LTE system.
When LTE network system malfunctions or server are busy, the new call connection request that described UE initiates can be refused in described network side, thus causes new call to set up. Described UE can heavily try, namely after call connection establishment failure, again call connection request is initiated, wait the response of described network side, if call connection request is still refused in described network side, then in order to the needs that satisfied call connects, described UE can find other network system or network resource connect needs to meet the call of self. Therefore, described UE converses after connection request refused by described network side on described N road, it is possible to detection obtains around it other network systems except LTE system except, is also the network information of different system. The described network information can comprise network system types and corresponding signal measurements; If described different system can be gsm system or other 2G/3G network system.
Report sending module 403, for sending isosystem measurement report to described network side;
Wherein, the report of described isosystem measurement comprises the described different system network information. Described isosystem measurement can also comprise reason value in reporting, described reason value is for indicating LTE network fault or server busy, and call connects the indication information that cannot set up.
Network handover module 404, for receiving described network side when the signal measurements judged in the described different system network information meets described UE business demand, the SRVCC switching instruction sent, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements.
After SRVCC has switched, the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand; The call of described M road is the M road call having set up connection before on an LTE network, and therefore described M equals N-1. Certainly, in the process of SRVCC switching, set up in the M road call of connection on an LTE network before, also may comprising just, user's communication is complete, user trigger hang up operation call, after therefore SRVCC has switched, actual transfer is just less than N-1 to the call quantity on different system network, ensureing that under the prerequisite that described M is positive integer, described M also may equal N-2, N-3 etc. It should be noted that, complete owing to conversing, user independently triggers the call hanging up operation, does not affect the useful effect that the present embodiment solves prior art problem.
The described different system network information may comprise more than network information, as the different system network around described UE can have 2G, 3G network (2G internet and 3G network all can segment again, as 2G can be subdivided into GSM, EDGE etc.) etc.
After described network side receives isosystem measurement report, can according to the information in the report of described isosystem measurement and its other information grasped, network resource as shared by the call connection that described UE has set up, whether different system described in comprehensive descision can meet the business demand of described UE.
In the present embodiment, the application of installation of described maintenance voice business continuity is in UE end, UE ask to set up under VoLTE new call connect unsuccessful and when needing to fall back on CS territory, can the different system information of active obtaining around it, and mail to described network side, it is convenient to described network side and arranges SRVCC handoff issues in time according to the information received, in whole handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus maintain the continuity of call, do not affect the experience of user.
In other implementations, described call request module can also be used for: after described network handover module performs SRVCC switching, and described different system network after handover is initiated call connection request. That is, after carrying out SRVCC switching, no matter all speech businesses of described UE are established the speech business that call connects before SRVCC switches, or the new call initiated connects speech business, be all based on switching after described different system real-time performance.
Fig. 5 is the embodiment of the present invention another apparatus structure schematic diagram keeping voice business continuity disclosed, and this application of installation is in network side, and the device 50 of described maintenance voice business continuity can comprise:
Request processing module 501, for when LTE network fault or server are busy, refusing the N road call connection request that UE initiates under VoLTE;
Described N is integer and is more than or equal to 2. In embodiments of the present invention, UE has at least set up a call under VoLTE and has connected, and the N road call request that therefore described UE initiates to network side is at least the 2nd tunnel call request.
Report receiver module 502, for receiving the isosystem measurement report that described UE sends;
Described isosystem measurement report comprise described UE obtain its around the different system network information; Described different system is the network system being different from LTE system.
LET network can not meet described UE set up new call connection request time, it is necessary to other network provides corresponding resource to meet the business demand of described UE. In the embodiment of the present invention, described UE when LTE network can not set up new call connect, need service bearer network from PS domain dropping to CS territory, the now different system network information of described UE active obtaining around it, the described different system network information can comprise network system types and corresponding strength of signal (signal measurements).
Judging module 503, whether the signal measurements for judging in the described different system network information meets the business demand of described UE;
Generally, described network side is it needs to be determined that the signal value of different system can reach certain intensity, to ensure that it can undertake on described UE the resource needed for business, resource needed for the business of described UE can comprise the resource needed for call connection that UE has set up, it is also possible to comprises the resource that described UE sets up new call connection and may need.
Switching executing module 504, for when described judgement module 503 judges the business demand that the signal measurements obtained in the different system network information meets described UE, SRVCC switching instruction is sent to described UE, for controlling, described UE coordinates described network side to complete SRVCC switching in described SRVCC switching so that M road call transfer to the signal measurements connected before described UE can meet on the different system network of described UE business demand.
Described network side send SRVCC switching be indicated to described UE, described UE and described network side cooperatively interacted SRVCC switching. After SRVCC handover success, the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand. Wherein, the call of described M road is the M road call having set up connection before on an LTE network, and therefore described M equals N-1. In the process of SRVCC switching, set up in the M road call of connection on an LTE network before, also may comprising just, user's communication is complete, user trigger hang up operation call, therefore after SRVCC has switched, call quantity in actual transfer to different system network is just less than N-1, is ensureing that under the prerequisite that described M is positive integer, described M also may equal N-2, N-3 etc.
In the present embodiment, the application of installation of described maintenance voice business continuity is in network side, network side is when LTE network fault or server are busy, the new call connection request that refusal UE initiates under VoLTE, then can according to receiving, the information that UE detects different systems axiol-ogy report around its of acquisition automatically judges whether different system can meet the business demand of UE, and according to judged result, when condition meets in time and UE cooperatively interacted SRVCC handoff procedure, thus the call set up under VoLTE before UE is connected business and is transferred on the different system network meeting requirement. in whole SRVCC handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus ensure that the continuity of call, do not affect the experience of user.
In the implementation of another possibility, in above-described embodiment, switching executing module 504 specifically can also be used for: before send SRVCC switching instruction to described UE, carries out SRVCC switchable resource preparation. Wherein, described SRVCC switchable resource prepares to comprise: the resource completing described different system network is reserved and carrying switch operating. Like this, before UE described in described network side direction sends SRVCC switching instruction, first complete SRVCC switchable resource preparation work, thus after described UE receives SRVCC switching instruction, described network side and described UE directly can carry out SRVCC switching fast. Therefore, this kind of enforcement mode is conducive to improving the efficiency of SRVCC switching.
Further, the embodiment of the invention also discloses a kind of system keeping voice business continuity, see Fig. 6, for keeping the system architecture schematic diagram of voice business continuity, the system 60 of described maintenance voice business continuity comprises UE601 and network side 602.
Wherein, described UE601 is used for: initiate call connection request in N road under VoLTE to described network side, N is integer and is more than or equal to 2;
When described N road call connection request is refused by described network side 602, described UE601 obtains the different system network information around it, and described different system is the network system being different from LTE system;
Described UE501 sends isosystem measurement report to described network side 602, and the report of described isosystem measurement comprises the described different system network information;
Receive described network side 602 when the signal measurements judged in the described different system network information meets described UE601 business demand, the SRVCC switching instruction sent, and coordinate described network side 602 to complete the SRVCC switching that can meet the different system network of described UE501 business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE601 to described signal measurements can meet on the different system network of described UE business demand; Described M equals N-1;
Described network side 602 for: when LTE network fault or server are busy, the N road call connection request that UE601 initiates under VoLTE is refused in described network side 602;
Receive described UE601 send isosystem measurement report, described isosystem measurement report comprise described UE601 obtain its around the different system network information, described different system is the network system being different from LTE system;
Whether the signal measurements judged in the described different system network information meets the business demand of described UE601;
If, then send SRVCC switching instruction to described UE601, described SRVCC switches instruction, and for controlling, described UE coordinates described network side to complete SRVCC switching so that M road call transfer to the signal measurements connected before described UE601 can meet on the different system network of described UE601 business demand.
In the present embodiment, UE can the different system information of active obtaining around it when needing to fall CS territory after rise, and mail to network side, it is convenient to network side and arranges SRVCC handoff issues in time according to the information received, in whole handoff procedure, the user of the call set up before switching can not the concrete switching of perception or broken words process, thus maintain the continuity of call, do not affect the experience of user.
In this specification sheets, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment emphasis illustrated is the difference with other embodiments, between each embodiment identical similar portion mutually see. For device disclosed in embodiment, owing to it corresponds to the method disclosed in Example, so what describe is fairly simple, relevant part illustrates see method part.
Also it should be noted that, herein, the such as relational terms of first and second grades and so on is only used for separating an entity or operation with another entity or operational zone, and not necessarily requires or imply to there is any this kind of actual relation or sequentially between these entities or operation. And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, so that comprise the process of a series of key element, method, article or equipment not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise the key element intrinsic for this kind of process, method, article or equipment. When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The method described in conjunction with embodiment disclosed herein or the step of algorithm can direct hardware, treater execution software module, or the combination of the two implements. Software module can be placed in the storage media of other form any known in random access memory (RAM), internal memory, read-only storage (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use the present invention. To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention can not be limited in these embodiments shown in this article, but be met the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. keep a method for voice business continuity, it be applied to UE end, it is characterised in that, comprising:
UE initiates N road call connection request under VoLTE to network side, and N is integer and is more than or equal to 2;
When described N road call connection request is refused by described network side, described UE obtains the different system network information around it, and described different system is the network system being different from LTE system;
Described UE sends isosystem measurement report to described network side, and the report of described isosystem measurement comprises the described different system network information;
Receive described network side when the signal measurements judged in the described different system network information meets described UE business demand, the single radio frequency continuous voice call SRVCC sent switches instruction, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1.
2. the method for maintenance voice business continuity according to claim 1, it is characterised in that, after described SRVCC has switched, also comprise:
Described UE described different system network after handover is initiated call connection request.
3. the method for maintenance voice business continuity according to claim 1, it is characterised in that, the report of described isosystem measurement also comprises reason value, and described reason value is instruction LTE network fault or the busy indication information of server.
4. keep a method for voice business continuity, it be applied to network side, it is characterised in that, comprising:
When LTE network fault or server are busy, the N road call connection request that network side refusal UE initiates under VoLTE, N is integer and is more than or equal to 2;
Receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Whether the signal measurements judged in the described different system network information meets the business demand of described UE;
If, then send SRVCC switching instruction to described UE, described SRVCC switches instruction, and for controlling, described UE coordinates described network side to complete SRVCC switching, M road call transfer to the signal measurements connected before making described UE can meet on the different system network of described UE business demand, and described M equals N-1.
5. the method for maintenance voice business continuity according to claim 4, it is characterized in that, before UE described in described network side direction sends SRVCC switching instruction, also comprising: carry out SRVCC switchable resource preparation, described SRVCC switchable resource prepares to comprise: the resource completing described different system network is reserved and carrying switch operating.
6. keep a device for voice business continuity, it be applied to UE end, it is characterised in that, comprising:
Call request module, for initiating call connection request in N road under VoLTE to network side, N is integer and is more than or equal to 2;
Data obtaining module, when being refused by described network side for connection request of conversing on described N road, obtains the different system network information around it, and described different system is the network system being different from LTE system;
Report sending module, for sending isosystem measurement report to described network side, the report of described isosystem measurement comprises the described different system network information;
Network handover module, for receiving described network side when the signal measurements judged in the described different system network information meets described UE business demand, the SRVCC switching instruction sent, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1.
7. the device of maintenance voice business continuity according to claim 6, it is characterised in that, described call request module also for: described network handover module perform SRVCC switch after, on described different system network after handover initiate call connection request.
8. the device of maintenance voice business continuity according to claim 6, it is characterised in that, the isosystem measurement report that described report sending module sends also comprises reason value, and described reason value is instruction LTE network fault or the busy indication information of server.
9. keep a device for voice business continuity, it be applied to network side, it is characterised in that, comprising:
Request processing module, for when LTE network fault or server are busy, refusing the N road call connection request that UE initiates under VoLTE, N is integer and is more than or equal to 2;
Report receiver module, for receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Judging module, whether the signal measurements for judging in the described different system network information meets the business demand of described UE;
Switching executing module, for when described judgement module judges the business demand that the signal measurements obtained in the different system network information meets described UE, SRVCC switching instruction is sent to described UE, described SRVCC switches instruction and coordinates described network side to complete SRVCC switching for described UE, M road call transfer to the signal measurements connected before making described UE can meet on the different system network of described UE business demand, and described M equals N-1.
10. the device of maintenance voice business continuity according to claim 9, it is characterised in that, described switchable resource preparation module specifically for: complete that the resource of described different system network is reserved and carrying switch operating.
11. 1 kinds keep the system of voice business continuity, it is characterised in that, comprise UE and network side:
Described UE is used for: initiate call connection request in N road under VoLTE to described network side, N is integer and is more than or equal to 2;
When described N road call connection request is refused by described network side, described UE obtains the different system network information around it, and described different system is the network system being different from LTE system;
Described UE sends isosystem measurement report to described network side, and the report of described isosystem measurement comprises the described different system network information;
Receive described network side when the signal measurements judged in the described different system network information meets described UE business demand, the SRVCC switching instruction sent, and coordinate described network side to complete the SRVCC switching that can meet the different system network of described UE business demand from LTE network to signal measurements, so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand, described M equals N-1;
Described network side is used for: when LTE network fault or server are busy, the N road call connection request that described network side refusal UE initiates under VoLTE;
Receive described UE send isosystem measurement report, described isosystem measurement report comprise described UE obtain its around the different system network information, described different system is the network system being different from LTE system;
Whether the signal measurements judged in the described different system network information meets the business demand of described UE;
If, then send SRVCC switching instruction to described UE, described SRVCC switches instruction, and for controlling, described UE coordinates described network side to complete SRVCC switching so that the M road call transfer connected before described UE to described signal measurements can meet on the different system network of described UE business demand.
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