CN102158919B - Voice fallback switching method and device - Google Patents
Voice fallback switching method and device Download PDFInfo
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- CN102158919B CN102158919B CN 201110058113 CN201110058113A CN102158919B CN 102158919 B CN102158919 B CN 102158919B CN 201110058113 CN201110058113 CN 201110058113 CN 201110058113 A CN201110058113 A CN 201110058113A CN 102158919 B CN102158919 B CN 102158919B
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Abstract
The embodiment of the invention discloses a voice fallback switching method and device, relating to the technical field of communication, wherein the method and device provided by the invention can be used for preventing the current CS (circuit-switched) fallback procedure from failed trigger, and improving the voice calling success rate. The method comprises the following steps: receiving a message containing a voice fallback indication sent by a source eNodeB (evolved Node B) or an MME (mobile management entity); and executing the voice fallback procedure based on the voice fallback indication after the UE is switched to a target cell in an LTE (long term evolution) system. The voice fallback switching method and device provided by the embodiment of the invention are mainly applied to the voice fallback switching processing process.
Description
Technical field
The present invention relates to communication technical field, relate in particular to changing method and device that a kind of voice fall after rise.
Background technology
At LTE ((Long Term Evolution, Long Term Evolution)) in the communication network, if UE is (User Equipment, subscriber equipment) residential quarter, current place belongs to the LTE communication network, when UE carries out CS (Circuit Switched) speech business, because the LTE communication network can't be handled the CS speech business, this moment, UE need select the residential quarter under the different system (2G/3G communication network) to insert, and then carried out the CS speech business.The processing procedure of this CS speech business is referred to as CS Fallback (voice falling) flow process.
Yet, if UE is before reporting the B1 measurement report, report earlier based on EUTRAN (the Evolved Universal Terrestrial Radio Access Network that covers, the general continental rise wireless access network of evolution) measurement report, after eNodeB receives this EUTRAN measurement report based on covering, can trigger based on the IntraLTE that covers and switch, be about to UE and switch to the intrasystem Target cell of LET and insert.After UE switched to Target cell, target eNode B did not also know that UE need carry out CS Fallback flow process, caused the failure of this time CS Fallback trigger flow, thereby caused audio call to prolong even failure turn-on time.
Summary of the invention
The invention provides changing method and device that a kind of voice fall after rise, avoid the failure of current C S Fallback trigger flow, improve the audio call success rate.
On the one hand, the changing method that provides a kind of voice to fall after rise comprises:
The voice that include that target evolved base station eNodeB reception sources evolved base station eNodeB or mobile management entity MME send fall the message of indicating after rise;
After user equipment (UE) switched to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice carried out voice falling flow process.
On the one hand, the changing method that provides a kind of voice to fall after rise comprises:
First equipment sends to the target evolved base station eNodeB and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, falls indication after rise according to described voice and carries out voice and fall flow process after rise.
On the one hand, provide a kind of base station, having comprised:
Receiving element is used for the message that includes voice falling indication that reception sources evolved base station eNodeB or mobile management entity MME send;
Performance element is used for after subscriber equipment switches to the intrasystem Target cell of LTE, and the voice that receive according to described receiving element fall indication execution voice falling flow process after rise.
On the one hand, provide another kind of base station, this base station is specially subscriber equipment and switches to the Target cell base station of the cell-of-origin correspondence at place before, comprising:
Transmitting element is used for sending to target eNode B and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, falls indication after rise according to described voice and carries out voice and fall flow process after rise.
On the one hand, provide a kind of mobile management entity, having comprised:
Transmitting element is used for sending to target BS eNodeB and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, falls indication after rise according to described voice and carries out voice and fall flow process after rise.
By the described embodiment of the invention of technique scheme, switch (be about to subscriber equipment and switch to the intrasystem Target cell of LTE) if taken place in the process of current speech falling trigger flow based on the IntraLTE that covers, the voice that include that target eNode B reception sources eNodeB or MME send fall the message of indicating after rise, and these voice fall indication after rise and are used for triggering voice falling flow process; After subscriber equipment switched to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carried out voice falling flow process.Thereby, avoided the failure of current C S Fallback trigger flow, improve the audio call success rate.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the changing method that a kind of voice that Fig. 1 provides for the embodiment of the invention fall after rise;
The flow chart of the changing method that the another kind of voice that Fig. 2 provides for the embodiment of the invention fall after rise;
The flow chart of the changing method that another voice that Fig. 3 provides for the embodiment of the invention fall after rise;
The flow chart of the changing method that another voice that Fig. 4 provides for the embodiment of the invention fall after rise;
The flow chart of the changing method that also a kind of voice that Fig. 5 provides for the embodiment of the invention fall after rise;
Fig. 6 provides a kind of structure chart of base station for the embodiment of the invention;
The structure chart of the receiving element 11 in the base station shown in Figure 7 that Fig. 7 provides for the embodiment of the invention;
Fig. 8 provides the structure chart of another kind of base station for the embodiment of the invention;
Fig. 9 provides a kind of structure chart of mobile management entity for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
ENodeB (the Evolved Node B of residential quarter, the current place of UE correspondence, evolved Node B) receives MME (Mobility Management Entity, during UE ContextModification Request (user's context update request) message that mobile management entity) sends, described UE Context Modification Request message is carried CS Fallback Indicator (voice fall indication after rise), and this CS Fallback Indicator is used for triggering CS Fallback flow process.If eNodeB judgement UE and different system (2G/3G communication network) all support based on the switching of measuring, then eNodeB sends B1 and measures control message to UE, triggering is based on the different system switching flow of measuring, namely after eNodeB receives the B1 measurement report that UE reports, trigger the residential quarter that UE is switched under the different system (2G/3G communication network) and insert.
After UE switched to Target cell, target eNode B did not also know that UE need carry out CS Fallback flow process, caused the failure of this time CS Fallback trigger flow, and then caused audio call to prolong even failure turn-on time.
The application scenarios that the embodiment of the invention provides can comprise: in the LTE communication network, when UE carries out the CS speech business, if the source eNodeB at the current place of described UE has sent B1 and has measured control message to UE (that is source eNodeB has triggered CS Fallback flow process), and receive that UE sends based on
The B1 of CSFBMeasurement report before, received earlier that UE sends based on the EUTRAN measurement report that covers, at this moment, source eNodeB will carry out based on the IntraLTE that covers and switch, soon UE switches to the intrasystem Target cell of LET and inserts.
As shown in Figure 1, the changing method that a kind of voice that the embodiment of the invention provides fall after rise, this method is carried out by the target eNode B of the intrasystem Target cell correspondence of LET that described UE switches to, and this method can comprise:
101, the voice that include that target eNode B reception sources eNodeB or MME send fall the message of indicating after rise;
These voice fall indication after rise can comprise that indicating target eNodeB carries out CS Fallback flow process.
102, after user equipment (UE) switches to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice carries out voice falling flow process.
Among the embodiment shown in Figure 1, since target eNode B can reception sources eNodeB or MME send include the message that voice fall indication after rise, make after subscriber equipment switches to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carries out voice falling flow process, the problem that causes the failure of current C S Fallback trigger flow and then cause audio call prolongation turn-on time even fail has taken place in the process of CS Fallback trigger flow in the prior art based on after the IntraLTE switching that covers thereby solved.
As shown in Figure 2, correspondingly, the changing method that a kind of voice that the embodiment of the invention provides fall after rise, first equipment in this method can comprise: source eNodeB or MME that described UE switches the cell-of-origin correspondence at preceding place carry out, and this method can comprise the steps:
201, first equipment sends to the target evolved base station eNodeB and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, described target eNode B falls indication after rise according to described voice to be carried out voice and falls flow process after rise.
Among the embodiment shown in Figure 2, because first equipment can send to target eNode B and include the handover request message that voice fall indication after rise, thereby after making subscriber equipment switch to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carries out voice falling flow process, with in the prior art in the process of CS Fallback trigger flow, after generation is switched based on the IntraLTE that covers, the current C S Fallback trigger flow failure that causes, and then cause audio call prolongation turn-on time and access failure to be compared, the embodiment of the invention has been avoided the failure of current C S Fallback trigger flow, improves the audio call success rate.
In the embodiment of the invention as shown in Figure 3, when subscriber equipment is switched to the intrasystem Target cell of LTE, send the message that includes voice falling indication to target eNode B by source eNodeB, to indicate described target eNode B after subscriber equipment switches to the intrasystem Target cell of LTE, carry out CS Fallback flow process.This method can comprise the steps:
401, in the LTE communication network, when UE carries out the CS speech business, mobile management entity MME sends UE Context Modification Request (user's context update request) message to source eNodeB, comprises in the described UE Context Modification Request message that voice fall indication after rise.
Particularly, can carry parameters C S Fallback Indicator in the described UE Context Modification Request message, described voice falling indication can be made as TRUE by the value with parameters C S Fallback Indicator and represent.These voice fall indication after rise and are used for triggering CS Fallback flow process, and the CS speech business is carried out in the residential quarter that makes subscriber equipment can insert under the different system (2G/3G).
402, after described source eNodeB receives described UE Context Modification Request message, send B1 to UE and measure control message.
403, UE had sent based on the EUTRAN measurement report that covers to described source eNodeB before sending the B1 measurement report to source eNodeB.For example, can send A3 measurement report (the intrasystem Target cell same-frequency measure reporting of LTE) or A4 measurement report (the intrasystem Target cell different-frequency measure reporting of LTE) to described source eNodeB.
404, described source eNodeB receives above-mentioned based on behind the EUTRAN measurement report that covers, the handover request message that will include voice falling indication by the interface S1 interface between eNodeB and the MME sends to MME, send to target eNode B by MME again, so that the Intra LTE that triggers based on S1 switches.
For example, described source eNodeB sends Handover Required message to MME, in described Handover Required message, increase voice and fall indication after rise, for example increase parameters C S Fallback Indicator in described Handover Required message, the value of described CS Fallback Indicator is TRUE; MME sends Handover Request message to target eNode B then, in described Handover Request message, increase voice and fall indication after rise, for example, increase parameters C S Fallback Indicator in described Handover Request message, the value of described CS Fallback Indicator is TRUE.
Need to prove, on the basis of agreement 36.413 definition, increased CS Fallback Indicator parameter in the above-mentioned Handover Required message that is sent to MME by source eNodeB by the S1 interface, the structure of this Handover Required message can be expressed as follows:
On the basis of agreement 36.413 definition, above-mentionedly increased CS Fallback Indicator parameter by MME by the Handover Request message that the S1 interface sends to target eNode B, this Handover Request message concrete structure can be expressed as follows:
Further, optional, this step can also send described voice when IntraLTE based on the interface X2 between the eNodeB switches and fall indication after rise triggering, and at this moment, this step 404 replaces with following steps 404A and carries out:
404A, described source eNodeB receive above-mentioned based on behind the EUTRAN measurement report that covers, and send to described target eNode B by X2 interface and include the handover request message that voice fall indication after rise.
For example, described source eNodeB sends Handover Request message to target eNode B, in described Handover Request message, increase voice and fall indication after rise, for example, increase CS Fallback Indicator parameter in described Handover Request message, the value of described CS Fallback Indicator is TRUE.
On the basis of agreement 36.423 definition, increased CS Fallback Indicator parameter in the above-mentioned Handover Request message that is sent to target eNode B by source eNodeB by X2 interface, this Handover Request message concrete structure is as follows:
405, after subscriber equipment switches to the intrasystem Target cell of LTE, described target eNode B falls indication after rise according to described voice carries out voice falling flow process.
In embodiment illustrated in fig. 4, when subscriber equipment is switched to the intrasystem Target cell of LTE, because source eNodeB can send to target eNode B and include the message that voice fall indication after rise, thereby make described target eNode B after subscriber equipment switches to the intrasystem Target cell of LTE, can carry out CS Fallback flow process.Avoid the failure of current C S Fallback trigger flow, improved the audio call success rate.
In the embodiment of the invention as shown in Figure 4, after subscriber equipment being switched to the intrasystem Target cell of LTE, send the message that includes voice falling indication to target eNode B by MME, carry out CS Fallback flow process with indicating target eNodeB, particularly, described subscriber equipment switches to the intrasystem Target cell of LTE for switching based on the IntraLTE of S1.This method can comprise:
501, MME receiving target eNodeB is by the handoff notification message (Handover Notify message) of S1 interface transmission.
502, MME judges whether that the source eNodeB that switches preceding place to described subscriber equipment sent the UE Context Modification Request message that includes voice falling indication.If the source eNodeB that switches preceding place to described subscriber equipment sent include the UE Context Modification Request message that voice fall indication after rise after, send described UE Context Modification Request message to described target eNode B.
In the embodiment of the invention as shown in Figure 5, after subscriber equipment being switched to the intrasystem Target cell of LTE, particularly, described subscriber equipment switches to the intrasystem Target cell of LTE and switches for the IntraLTE based on X2, send the message that includes voice falling indication by MME to target eNode B, carry out CS Fallback flow process with indicating target eNodeB.This method comprises:
601, MME receiving target eNodeB is by the path changing request message (Path Switch Request message) of S1 interface transmission.
602, MME judges whether that the source eNodeB that switches preceding place to described subscriber equipment sent the UE Context Modification Request message that includes voice falling indication.If the source eNodeB that switches preceding place to described subscriber equipment sent include the UE Context Modification Request message that voice fall indication after rise after, send described UE Context Modification Request message again to described target eNode B.
In the Figure 4 and 5 illustrated embodiment, among the embodiment shown in Figure 2, switch (be about to subscriber equipment and switch to the intrasystem Target cell of LTE) if taken place in the process of current speech falling trigger flow based on the IntraLTE of S1 or X2, MME can send again to target eNode B and include the message that voice fall indication after rise, and these voice fall indication after rise and fall flow process after rise for triggering voice; After subscriber equipment switched to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carried out voice falling flow process.With in the prior art after subscriber equipment switches to the intrasystem Target cell of LTE, because target eNode B does not know that subscriber equipment need carry out CS Fallback flow process, cause current voice to fall the trigger flow failure after rise, cause the audio call failure to be compared, target eNode B in the embodiment of the invention can initiatively be carried out current voice and fall flow process after rise, after the IntraLTE switching that in the process of CS Fallback trigger flow, has taken place in the prior art based on covering, cause the failure of current C S Fallback trigger flow, and then cause audio call prolongation turn-on time even failure to be compared, the embodiment of the invention has been avoided the failure of current C S Fallback trigger flow, improves the audio call success rate.
As shown in Figure 6, the embodiment of the invention provides a kind of base station, and this base station is specially the target BS of the intrasystem Target cell correspondence of LTE that subscriber equipment switches to, and comprising: receiving element 11 and performance element 12.
Wherein, receiving element 11 is used for the message that voice fall indication after rise that includes of reception sources eNodeB or MME transmission;
Since target eNode B can reception sources eNodeB or MME send include the message that voice fall indication after rise, make after subscriber equipment switches to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carries out voice falling flow process, the problem that causes the failure of current C S Fallback trigger flow and then cause audio call prolongation turn-on time even fail has taken place in the process of CS Fallback trigger flow in the prior art based on after the IntraLTE switching that covers thereby solved.
Further, as shown in Figure 7, the receiving element 11 in the described target BS comprises following at least a subelement: first receives subelement 110 or second receives subelement 111.
Wherein, first receives subelement 110, is used for receiving the handover request message that voice fall indication after rise that includes of evolved base station source eNodeB transmission, initiates the voice falling to trigger after subscriber equipment switches to the intrasystem Target cell of LTE; This first function that receives subelement realizes specifically can be referring to the associated description of target BS in the above-mentioned method shown in Figure 4.
Need to prove, described first receives subelement 110 is used for receiving described source eNodeB behind the EUTRAN measurement report based on covering that receives the subscriber equipment transmission, send to MME by the S1 interface, the voice that include that sent by MME fall the handover request message of indicating after rise again; Perhaps,
Described first receives subelement 110 is used for the described source eNodeB of reception behind the EUTRAN measurement report based on covering that receives the subscriber equipment transmission, and the voice that include that send by X2 interface fall the handover request message of indicating after rise.
Described second receives subelement 111, is used for receiving the user's context update request UE Context Modification Request message that includes voice falling indication that mobile management entity MME sends.
Need to prove, described second receives subelement 111 is used for receiving described MME after receiving the handoff notification message that target eNode B sends by the S1 interface, and described MME sent to described source eNodeB and includes send again after the UE Context Modification Request message that voice fall indication after rise described and include the UE Context Modification Request message that the voice falling is indicated; This second function that receives subelement realizes specifically can be referring to the associated description of target BS in the above-mentioned method shown in Figure 4.
Perhaps, optionally, described second receives subelement 111 is used for receiving MME after receiving the path changing request message that target eNode B sends by X2 interface, and described MME sent to described source eNodeB and includes send again after the UE Context Modification Request message that voice fall indication after rise described and include the UE Context Modification Request message that the voice falling is indicated.This second function that receives subelement realizes specifically can be referring to the associated description of target BS in the above-mentioned method shown in Figure 6.
As shown in Figure 8, another kind of base station, this base station are specially subscriber equipment and switch to the Target cell base station of the cell-of-origin correspondence at place before, comprising: transmitting element 22.
Transmitting element 22 is used for sending to target eNode B and includes the handover request message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, falls indication after rise according to described voice and carries out voice and fall flow process after rise.
Described transmitting element 22 comprises: first sends subelement 221, is used for sending the handover request message that includes voice falling indication to target eNode B.
Described: first sends the subelement 221 concrete handover request message that are used for including by the MME forwarding voice falling indication, described UE sends described handover request message based on behind the EUTRAN measurement report that covers for source eNodeB receives, and sends to MME by the S1 interface; Perhaps,
Described transmitting element 22 specifically includes the handover request message that voice fall indication after rise for sending by X2 interface, and described request message is that described source eNodeB sends behind the EUTRAN measurement report based on covering that receives described UE transmission.
Because source eNodeB is before the measurement report based on measurement that does not receive the UE transmission, when having received based on the EUTRAN measurement report that covers earlier, still can send to target eNode B and include the handover request message that voice fall indication after rise, thereby make after subscriber equipment switches to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carries out voice falling flow process, in the process of CS Fallback trigger flow, taken place in the prior art to cause the failure of current C S Fallback trigger flow based on after the IntraLTE switching that covers thereby solved, and then the problem that causes audio call prolongation turn-on time even fail.
As shown in Figure 9, the embodiment of the invention provides a kind of mobile management entity, comprising: transmitting element 32.
Wherein, transmitting element 32 is used for sending to target BS eNodeB and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of LTE, falls indication after rise according to described voice and carries out voice and fall flow process after rise.
Need to prove that described transmitting element comprises that second sends subelement 321, be used for sending the user's context update request UE Context Modification Request message that comprises voice falling indication to target eNode B.
Described second sends that subelement 321 is concrete to be used for receiving the handoff notification message that described target eNode B sends by the S1 interface, and sends to include to send after the UE Context Modification Request message that voice fall indication after rise to described source eNodeB and include the UE Context Modification Request message that the voice falling is indicated; Perhaps,
Described second sends subelement 321 specifically is used for receiving the path changing request message that described target eNode B sends by the S1 interface, and to described source eNodeB sent include the UE Context Modification Request message that voice fall indication after rise after, send and include the UE Context Modification Request message that voice fall indication after rise.
The function of above-mentioned mobile management entity shown in Figure 9 realizes specifically can be referring to the associated description of mobile management entity in the method shown in above-mentioned Fig. 4 or 5.
Among the embodiment shown in Figure 9, switch (be about to subscriber equipment and switch to the intrasystem Target cell of LTE) if taken place in the process of current speech falling trigger flow based on the IntraLTE that covers, MME can send again to target eNode B and include the message that voice fall indication after rise, and these voice fall indication after rise and fall flow process after rise for triggering voice; After subscriber equipment switched to the intrasystem Target cell of LTE, target eNode B falls indication after rise according to described voice carried out voice falling flow process.With in the prior art after subscriber equipment switches to the intrasystem Target cell of LTE, because target eNode B does not know that subscriber equipment need carry out CS Fallback flow process, cause current voice to fall the trigger flow failure after rise, cause the audio call failure to be compared, target eNode B in the embodiment of the invention can initiatively be carried out current voice and fall flow process after rise, in the process of CS Fallback trigger flow, taken place based on after the IntraLTE switching that covers thereby solved, cause the failure of current C S Fallback trigger flow, and then cause the problem of audio call prolongation turn-on time even failure.
The embodiment of the invention is mainly used in the handoff process of voice falling.Solved and in the process of CS Fallback trigger flow, taken place in the prior art to cause the failure of current C S Fallback trigger flow based on after the IntraLTE switching that covers, and then caused the problem of audio call prolongation turn-on time even failure.Thereby, avoided the failure of current C S Fallback trigger flow, improve the audio call success rate.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (5)
1. the changing method that voice fall after rise is characterized in that, comprising:
First equipment sends to the target evolved base station eNodeB and includes the message that voice fall indication after rise, so that after user equipment (UE) switches to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice to be carried out voice and falls flow process after rise;
Wherein, when described first equipment is source eNodeB, this step comprises: described source eNodeB transmits by MME and includes the handover request message that voice fall indication after rise, described UE sends described handover request message based on behind the EUTRAN measurement report that covers for source eNodeB receives, described source eNodeB sends to MME by the S1 interface, and is transmitted to described target eNode B by MME; Perhaps, described source eNodeB sends by X2 interface and includes the handover request message that voice fall indication after rise, described handover request message be described source eNodeB receive that described UE sends based on the EUTRAN measurement report that covers after, described source eNodeB sends to described target eNode B; Perhaps
When described first equipment is MME, this step comprises: described MME receives the handoff notification message that described target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to described source eNodeB, send and include the UE Context Modification Request message that the voice falling is indicated; Perhaps, described MME is receiving the path changing request message that described target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to described source eNodeB, send and include the UE Context Modification Request message that the voice falling is indicated.
2. the changing method that voice fall after rise is characterized in that, comprising:
The voice that include that target evolved base station eNodeB reception sources eNodeB or mobile management entity MME send fall the message of indicating after rise,
Wherein, this step comprises: described target eNode B reception sources eNodeB falls the handover request message of indicating after rise by the voice that include that MME transmits, described UE sends described handover request message based on after covering universal terrestrial radio access network EUTRAN measurement report for source eNodeB receives, described source eNodeB sends to MME by the S1 interface, and is transmitted to described target eNode B by MME; Perhaps, described target eNode B reception sources eNodeB falls the handover request message of indicating after rise by the voice that include that X2 interface sends, described handover request message is that described source eNodeB sent to described target eNode B after described source eNodeB received the EUTRAN measurement report based on covering of described UE transmission;
Perhaps, this step comprises: described target eNode B receives the UE Context Modification Reques t message that includes voice falling indication that MME sends, described UE Context ModificationReque s t message is that described MME receives the handoff notification message that target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to described source eNodeB, described MME sent to described target eNode B; Perhaps, described UE Context Modification Request message is that described MME is receiving the path changing request message that target eNode B sends by the S1 interface, and after judgement sent the UEContext Modification Request message that includes voice falling indication to described source eNodeB, described MME sent to described target eNode B;
After user equipment (UE) switched to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice carried out voice falling flow process.
3. a base station is characterized in that, described base station is source eNodeB, comprising:
Transmitting element, be used for sending the message that includes voice falling indication to the target evolved base station eNodeB, so that after user equipment (UE) switches to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice to be carried out voice and falls flow process after rise;
Wherein, described transmitting element comprises: first sends subelement, be used for transmitting the handover request message that includes voice falling indication by Mobility Management Entity MME, described UE sends described handover request message based on behind the universal terrestrial radio access network EUTRAN measurement report that covers for source eNodeB receives, send to MME by the S1 interface, and be transmitted to described target eNode B by MME; Perhaps, concrete being used for sends the handover request message that includes voice falling indication by X2 interface, described handover request message be described source eNodeB receive that described UE sends based on the EUTRAN measurement report that covers after, described source eNodeB sends to described target eNode B.
4. a Mobility Management Entity MME is characterized in that, comprising:
Transmitting element, be used for sending the message that includes voice falling indication to the target evolved base station eNodeB, so that after user equipment (UE) switches to the intrasystem Target cell of Long Term Evolution LTE, described target eNode B falls indication after rise according to described voice to be carried out voice and falls flow process after rise;
Wherein, described transmitting element comprises: second sends subelement, be used for receiving the handoff notification message that described target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to source eNodeB, send and include the UE Context Modification Request message that the voice falling is indicated; Perhaps, receiving the path changing request message that described target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to described source eNodeB, send and include the UE Context Modification Request message that the voice falling is indicated.
5. a base station is characterized in that, described base station is target eNode B, comprising:
Receiving element is used for the message that includes voice falling indication that reception sources evolved base station eNodeB or mobile management entity MME send;
Wherein, described receiving element comprises: first receives subelement and second receives subelement,
Described first receives subelement specifically is used for the handover request message that includes voice falling indication that reception sources eNodeB transmits by MME, described UE sends described handover request message based on behind the EUTRAN measurement report that covers for source eNodeB receives, described source eNodeB sends to MME by the S1 interface, and is transmitted to described target eNode B by MME; Perhaps, described first receives subelement specifically is used for the handover request message that includes voice falling indication that reception sources eNodeB sends by X2 interface, described handover request message be described source eNodeB receive that described UE sends based on the EUTRAN measurement report that covers after, described source eNodeB sends to described target eNode B;
Described second receives subelement specifically is used for receiving the UEContext Modification Request message that includes voice falling indication that MME sends, described UE Context Modification Request message is that described MME receives the handoff notification message that target eNode B sends by the S1 interface, and after judgement sent the UE Context Modification Request message that includes voice falling indication to described source eNodeB, described MME sent to described target eNode B; Perhaps, described UE Context Modification Request message is that described MME is receiving the path changing request message that target eNode B sends by the S1 interface, and after judgement sent the UEContext Modification Request message that includes voice falling indication to described source eNodeB, described MME sent to described target eNode B;
Performance element is used for after subscriber equipment switches to the intrasystem Target cell of Long Term Evolution LTE, and the voice that receive according to described receiving element fall indication execution voice falling flow process after rise.
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| CN103108402B (en) * | 2011-11-11 | 2017-02-08 | 中兴通讯股份有限公司 | Voice service implementation method, voice fall back implementation terminal and system thereof |
| CN103702378A (en) * | 2013-12-23 | 2014-04-02 | 北京北方烽火科技有限公司 | Voice service processing method and device of LTE ( long term evolution) cell |
| CN105050147B (en) * | 2015-06-30 | 2020-12-11 | 中兴通讯股份有限公司 | Method and device for voice fallback in switching process |
| KR102456331B1 (en) * | 2016-04-08 | 2022-10-19 | 삼성전자 주식회사 | Method and Device for providing circuit switching service in wireless communication system |
| WO2019071496A1 (en) | 2017-10-11 | 2019-04-18 | Oppo广东移动通信有限公司 | Post-network handover return method, access network device and core network device |
| WO2019136685A1 (en) * | 2018-01-12 | 2019-07-18 | Oppo广东移动通信有限公司 | Method and apparatus for network selection by terminal, and computer device and storage medium |
| CN110113791B (en) * | 2019-05-09 | 2021-08-13 | 中国联合网络通信集团有限公司 | Mobile terminal and method for falling back to cell |
| CN117177259A (en) * | 2022-05-25 | 2023-12-05 | 大唐移动通信设备有限公司 | Voice rollback information processing method and device, terminal and network equipment |
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