CN100387095C - Method of realizing business type change - Google Patents

Method of realizing business type change Download PDF

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Publication number
CN100387095C
CN100387095C CNB2004100801881A CN200410080188A CN100387095C CN 100387095 C CN100387095 C CN 100387095C CN B2004100801881 A CNB2004100801881 A CN B2004100801881A CN 200410080188 A CN200410080188 A CN 200410080188A CN 100387095 C CN100387095 C CN 100387095C
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terminal
service
called
msc
decoding
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CN1753556A (en
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王洁
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The present invention discloses a method of realizing service type change in call processes, and the method is that a terminal can automatically initiate a course of changing service types in the call processes. Owing to the terminal automatically initiating the course of changing the service types, so the terminal can still realize changing the service type under the condition of MSC exchange happening. In addition, the terminal can automatically adjust services according to the service supporting situations, the terminal not only can initiate the change from a video telephone back to a voice service, but also can change the voice service into the video telephone service. The terminal does not need users' driving intervention and can increase the service experience of video telephone users, the terminal can also increase operators' revenue, and the terminal is a necessary and effective replenishment to the existing video phone and speech services generated from networks. Meanwhile, the present invention does not need adding any information and parameters, so the present invention can be realized with a small amount of reinforcement to the terminal, and therefore, the method is simple.

Description

A kind of method that realizes that type of service changes
Technical field
The present invention relates to the communication technology, be meant a kind of method that type of service changes that in communication process, realizes especially.
Background technology
Video telephone is a topmost business in the circuit domain multimedia service realized of broadband CDMA system (WCDMA), and visual telephone service realizes that by the mobile network circuit domain maximum bandwidth is 64K.Visual telephone service is generally believed it is a kind of characteristic service that third generation wireless communication technology (3G) WCDMA network is different from second generation wireless communication technology (2G) global system for mobile communications (GSM), has bright development prospect.At present, some deployment are arranged and carried out the mobile operator of WCDMA network operation, visual telephone service all is provided, carry by the circuit domain data UDI mode of 64K speed, user terminal must have the H..324M video telephone function.
So-called circuit domain multimedia service changes and is meant, under certain condition the change function between visual telephone service and the normal speech business.Specifically comprise following scene: (1) call establishment stage, the calling party initiates video telephone and speech business, and wherein visual telephone service is preferential, because callee's terminal do not support video telephone, or network do not support video telephone, selects non-preferential speech business; (2) during calling is carried out, i.e. after both sides' conversation, calling party or callee are by terminal operation, and as operating by specific button or by on-screen menu, active changes to speech business with visual telephone service, or speech business is changed to visual telephone service; (3) during calling is carried out, be after both sides converse, because network environment changes, support video telephone and speech business as 3G network, a 2G network support voice business, calling party or callee enter into 2G network area, calling party or callee and enter into 3G network zone, 3G network signal weaker or the like from the 2G network area from the 3G network zone, network is initiatively initiated the change between visual telephone service and the speech business.
Because the Internet resources that visual telephone service takies are far longer than the Internet resources that speech business takies, especially Bao Gui bandwidth of air-interface resource.Visual telephone service takies the 64K bandwidth at present, and the speech business occupied bandwidth depends on the speech coding type that terminal adopts, and is general all less than 16K.So most operators will be higher than speech business to the charge of visual telephone service when carrying out visual telephone service.
Because the coverage rate of 2G network is very extensive at present, and the 3G networking initial stage, its coverage rate has evolution from small to large, and for initial several years of operator's construction 3G network, the switching between 3G and the 2G network was very important, also is more frequent.
During calling is carried out when the calling party of video telephone or callee are switched between 3G network and 2G network, multimedia service according to current third generation partner program (3GPP) falls after rise and the professional standard that changes, if terminal is when the 3G area of coverage enters the 2G area of coverage, before terminal is initiated the network handoff request, before promptly switching to the 2G Access Network from the 3G Access Network, the business that 3G mobile switching centre (MSC) initiates from the video telephone to voice changes process; After a period of time, when terminal reentered the 3G area of coverage, after terminal was initiated after network switches, promptly switched to the 3G Access Network from the 2G Access Network, the business that MSC can initiate once more from voice to the video telephone changed.The business that MSC initiates from voice to the video telephone changes, and its precondition is that this MSC video telephone of initiating in advance to associate changes to the business of voice, and any professional change no longer takes place in the centre.
Fig. 1 a is depicted as by the caller MSC in the network and initiates the schematic flow sheet that video telephone changes to speech business.Fig. 1 b is that the caller MSC in the network initiates the business change flow process of voice to video telephone.Wherein, BCmm represents video telephone carrying attribute, and BCspeech represent the voice bearer attribute, and mm is the video telephone coding, and x, y, z are speech codings, and to be MSC carry out coding after the priority ordering according to terminal response to the speech coding during the encoding and decoding of MSC interoffice are tabulated; May there be a plurality of tandem MSC between caller MSC and the called MS C, the message that tandem MSC will receive to the transparent transmission of the opposing party MSC.
As shown in Figure 1a, it is as follows to the detailed process that speech business changes that caller MSC initiates video telephone:
Caller MSC sends Modify message to calling terminal, wherein contains voice bearer attribute BCspeech; After calling terminal is received Modify message, determine whether the user agrees to revise trafficwise, if agree, then revise the carrying attribute of self, and send Modify complete message to caller MSC, wherein contain voice bearer attribute BCspeech, if disagree with, then send Modify Reject to caller MSC, wherein contain video telephone carrying attribute BCmm.
Simultaneously, caller MSC also initiates the coding/decoding negotiation process to called MS C, and encoding and decoding tabulation wherein is x, y, z, mm, after called MS C receives coding/decoding negotiation message, sends Modify message to terminal called, wherein contains voice bearer attribute BCspeech; And after terminal called receives Modify message, determine whether the user agrees to revise trafficwise, if agree, then revise the carrying attribute of self, and send Modify complete message to called MS C, called MS C sends to caller MSC and contains the coding/decoding negotiation message of encoding and decoding tabulation for x, y, z, mm, otherwise, terminal called sends the Modify Reject message that contains video telephone carrying attribute BCmm to called MS C, and called MS C sends to caller MSC and contains the coding/decoding negotiation message of encoding and decoding tabulation for mm, x, y, z then.
If calling terminal and terminal called are all agreed professional the change, after this, to carry out speech business between calling terminal and the terminal called, if the wherein professional change of side refusal of calling terminal and terminal called, then MSC is with call release, or initiate professional change process once more, make the user that professional change takes place come back to original business model.
Shown in Fig. 1 b, network initiation voice are achieved in that to the process of the business change of video telephone
Caller MSC sends to calling terminal and revises (Modify) message, wherein contains video telephone carrying attribute BCmm; After calling terminal is received Modify message, determine whether the user agrees to revise trafficwise, if agree, then revise the carrying attribute of self, and send to revise and to finish (Modify complete) message to caller MSC, wherein contain voice bearer attribute BCmm, if disagree with, then send refusal and revise (Modify Reject) message, wherein contain video telephone carrying attribute BCspeech to caller MSC.
Simultaneously, caller MSC also initiates the coding/decoding negotiation process to called MS C, and encoding and decoding tabulation wherein is mm, x, y, z, after called MS C receives coding/decoding negotiation message, sends Modify message to terminal called, wherein contains voice bearer attribute BCmm; And after terminal called receives Modify message, determine whether the user agrees to revise trafficwise, if agree, then the carrying attribute with self changes BCmm into, and send Modify complete message to called MS C, called MS C sends to caller MSC and contains the coding/decoding negotiation message of encoding and decoding tabulation for mm, x, y, z, otherwise, terminal called sends the Modify Reject message that contains video telephone carrying attribute BCspeech to called MS C, and called MS C sends to caller MSC and contains the coding/decoding negotiation message of encoding and decoding tabulation for x, y, z, mm then.
If calling terminal and terminal called are all agreed professional the change, after this, to carry out speech business between calling terminal and the terminal called, if the wherein professional change of side refusal of calling terminal and terminal called, then MSC is with call release, or initiate professional change process once more, make the user that professional change takes place come back to original business model.
Said process, calling party or callee enter the 2G area of coverage from the 3G area of coverage in calling is carried out, again when the 2G area of coverage reenters the 3G area of coverage, can only initiate video telephone to voice from network side MSC, business from voice to the video telephone changes again, and can only could realize under the situation that does not take place to switch between MSC that promptly terminal switches all the time in the call between 3G Access Network under the same MSC and 2G Access Network.When terminal in the call take place to be crossed over when switching between the 3G of MSC and 2G system, then except initiating video telephone first 3G MSC to the business change of voice, other MSC can't know whether initiate to associate the business change of video telephone to voice in advance, and any professional change no longer takes place in the centre, so when terminal again when the 2G area of coverage enters the 3G area of coverage, MSC can't confirm that the business that whether should initiate once more from voice to the video telephone changes.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that type of service changes that in communication process, realizes, this method can make the variation of terminal according to network condition, and the business of initiatively initiating between voice and video telephone changes, and initiates professional various restrictions thereby solve above-mentioned network.
In order to achieve the above object, the invention provides a kind of method that type of service changes that realizes in communication process, this method is achieved in that
A. the MSC under it of first terminal in the both call sides sends the business modification request, wherein contains the traffic type information that changes to some extent;
B. MSC sends the encoding and decoding tabulation that contains priority level under first terminal by middle tandem MSC MSC under second terminal, wherein limit priority is the encoding and decoding that first terminal is asked the type of service correspondence that changes among the step a, and MSC sends the business modification request according to the encoding and decoding corresponding service type of described limit priority to second terminal again under second terminal;
C. second terminal determines whether to change type of service, if can, then by the MSC under first terminal of MSC, middle tandem MSC under self send with step b in the encoding and decoding tabulation of same sequence, execution in step e, otherwise, then send with the encoding and decoding of step b different order and tabulate execution in step d by the MSC under first terminal of MSC, middle tandem MSC under self;
D. MSC sends to first terminal and revises failure response under first terminal, jumps out this flow process;
E. MSC sends to first terminal and revises success response under first terminal, and the type of service of both call sides is the type of service that first terminal is asked among the step a.
Described first terminal is that calling terminal, described second terminal are terminal called, or described first terminal is a terminal called, and described second terminal is a calling terminal.
Described type of service is video telephone, voice, or the multimedia service of different Q OS flows, voice.
When described first terminal is that calling terminal, described second terminal are terminal called, when the type of service that described request changes is voice, and calling terminal and terminal called present type of service are video telephone, and then step a comprises:
A1, calling terminal send the business modification request message to caller MSC, and the carrying property parameters is voice in the message;
Step b comprises:
B11, caller MSC be according to the business modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, speech coding x, y, z were positioned at before the multimedia coding mm, and promptly voice are preferential;
B12, called MS C send the business modification request message according to the priority orders of coding in the encoding and decoding tabulation of receiving to terminal called, and the carrying property parameters is voice in the message;
Step c comprises:
If terminal called is determined to change type of service, then return the modification success response to called MS C, it is voice that carrying property parameters in the business modification request message that carries property parameters in the message and receive is consistent, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, this encoding and decoding tab sequential is consistent with encoding and decoding tab sequential among the step b, execution in step e;
If terminal called is determined to change type of service, then return the modification failure response to called MS C, to keep former carrying attribute be video telephone to the carrying property parameters in the message, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, in this encoding and decoding tabulation, multimedia coding is that video telephone is preferential before being positioned at speech coding, execution in step d;
Steps d comprises:
Caller MSC returns the modification failure response to calling terminal, and the carrying property parameters is a video telephone in the message;
Step e comprises:
Caller MSC returns the modification success response to calling terminal, and the carrying property parameters is voice in the message.
When described first terminal is that calling terminal, described second terminal are terminal called, when the type of service that described request changes is video telephone, and calling terminal originated call form is that video telephone is preferential, the both call sides present type of service is voice, and step a comprises:
A2, calling terminal send the business modification request message to caller MSC, and the carrying property parameters is a video telephone in the message;
Step b comprises:
B21, caller MSC be according to the business modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, multimedia coding was positioned at before the speech coding, and promptly video telephone is preferential;
B22, called MS C send the business modification request message according to the priority orders of coding in the encoding and decoding tabulation of receiving to terminal called, and the carrying property parameters is that video telephone is preferential in the message;
Step c comprises:
If terminal called is determined to change type of service, then return the modification success response to called MS C, it is video telephone that carrying property parameters in the business modification request message that carries property parameters in the message and receive is consistent, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, this encoding and decoding tab sequential is consistent with encoding and decoding tab sequential among the step b, execution in step e;
If terminal called is determined to change type of service, then return the modification failure response to called MS C, to keep former carrying attribute be voice to the carrying property parameters in the message, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, in the encoding and decoding tabulation, speech coding is that speech business is preferential before being positioned at multimedia coding, execution in step d;
Steps d comprises:
Caller MSC returns the modification failure response to calling terminal, and the carrying property parameters is voice in the message;
Step e comprises:
Caller MSC returns the modification success response to calling terminal, and the carrying property parameters is a video telephone in the message.
To determine whether to change type of service be by sending the professional information that changes to the user to second terminal among the step c, and then receive user's selection that changes of whether accepting business and realize.
The user is provided with the professional selection information that changes of whether initiatively initiating in advance in terminal, to determine whether to change type of service be to judge according to the information that whether accepting of setting in advance of the user business that the other side initiates changes to second terminal among the step c.
Before step a, further comprise:
Whether a0, the terminal judges current network of conversing satisfy present type of service, or do not satisfy the priority business that turns back to initial initiation request when professional, if satisfy, then return step a0, otherwise, execution in step a.
Judging among the step a0 whether current network satisfies present type of service, or do not satisfy the priority business that turns back to initial initiation request when professional, is to determine according to the current place of terminal network type, current place network load condition and zone, position.The present invention is in calling is carried out, and is initiatively initiated to change the process of type of service by terminal.Because this method adopts and initiatively initiates professional change process by terminal, so under the situation that takes place to switch between MSC in terminal, still can realize the change of type of service.And, terminal can be carried out professional automatic adjustment according to the business support situation of network, promptly not only can initiate to return back to the change of speech business by terminal, can also again visual telephone service be changed in speech business, not need user's pro-active intervention from video telephone.Use this method, not only promoted video telephone user's business experience, can also increase the income of operator, and existing business change by network initiation video telephone and voice is a kind of necessity and effectively replenishes, can also be used for following situation: switch between the 3G of terminal generation leap MSC and 2G system such as this method; Perhaps terminal changes according to network signal and carries out business reorganization; Perhaps MSC does not support to change according to network, initiatively initiates the function of the business change of video telephone and voice; Perhaps MSC can only initiate the business change of video telephone to voice, can not initiate the situation of voice to the business change of video telephone once more.Simultaneously, because the present invention does not need to increase any message and parameter, only terminal is done minimum enhancing and can realize, so method is simple.
Description of drawings
Fig. 1 is for comprising Fig. 1 a and 1b two parts, and wherein, Fig. 1 a initiates the schematic flow sheet that video telephone changes to speech business by the caller MSC in the network, and Fig. 1 b is that the caller MSC in the network initiates the business change flow process of voice to video telephone;
Fig. 2 is for realizing the schematic flow sheet of the inventive method;
The successful schematic flow sheet that the video telephone that Fig. 3 is initiated by calling terminal for the present invention changes to speech business;
The schematic flow sheet that Fig. 4 refuses to speech business change, terminal called for the video telephone that the present invention is initiated by calling terminal;
The successful schematic flow sheet that the speech business that Fig. 5 is initiated by calling terminal for the present invention changes to video telephone;
The schematic flow sheet that Fig. 6 refuses to video telephone change, terminal called for the speech business that the present invention is initiated by calling terminal.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Method of the present invention is in the process that both call sides is called out, promptly in the communication process, by the wherein change of type of service between side initiation voice and video telephone.These types of service can be video telephone, voice, perhaps have multimedia service stream, voice of different Q OS etc.
Referring to shown in Figure 2, the present invention realizes that the professional method that changes may further comprise the steps between voice and video telephone:
Step 201: the MSC under it of first terminal in the both call sides sends the business modification request, wherein contains the traffic type information that changes to some extent;
Step 202: MSC sends the encoding and decoding tabulation that contains priority level MSC under second terminal by middle tandem MSC under first terminal, and the encoding and decoding of the type of service correspondence that first terminal request changes in the step 201 are limit priority;
Step 203: MSC sends the business modification request to second terminal again under second terminal, and wherein the type of service that is changed is the highest encoding and decoding corresponding service type of encoding and decoding tabulation medium priority;
Step 204: after second terminal is received the request of this change type of service, determine whether to change type of service, if can, then by the MSC under first terminal of MSC, middle tandem MSC under self send with step 203 in the encoding and decoding tabulation of same sequence, execution in step 206, otherwise, then send with the encoding and decoding of step 203 different order and tabulate execution in step 205 by the MSC under first terminal of MSC, middle tandem MSC under self;
Step 205: MSC sends to first terminal and revises failure response under first terminal, jumps out this flow process;
Step 206: MSC sends to first terminal and revises success response under first terminal, and the type of service of both call sides is the type of service that first terminal is asked in the step 201.
In the said process, if first terminal is a calling terminal, then second terminal is a terminal called, and MSC is caller MSC under corresponding first terminal, and MSC is called MS C under second terminal; And if first terminal is a terminal called, second terminal is a calling terminal, and MSC is called MS C under first terminal, and MSC is caller MSC under second terminal.If calling terminal and terminal called do not belong to same MSC, MSC tandem MSC in the middle of may comprise the second terminal MS C under first terminal then; And if calling terminal and terminal called all belong to same MSC, tandem MSC in the middle of then not comprising between the two.
Fig. 3 and Fig. 4 are respectively successful flow process and the refusal flow processs that is changed to speech business by the video telephone that calling terminal is initiated.
Referring to shown in Figure 3, the video telephone that calling terminal is initiated is as follows to the detailed process of the successful flow process that speech business changes:
Step 301: calling terminal sends Modify message to caller MSC, and the carrying property parameters is voice in the message.
Step 302: caller MSC is according to the modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, speech coding x, y, z were positioned at before the multimedia coding mm, and promptly voice are preferential.
Step 303: called MS C is according to the sequencing of coding in the encoding and decoding tabulation of receiving, it is preferential to understand speech business, sends Modify message to terminal called, and the carrying property parameters is voice in the message.
Step 304: terminal called returns Modify Complete response to called MS C, and the carrying property parameters is consistent with carrying property parameters in the Modify request message of receiving in the message, i.e. voice.
Step 305: called MS C returns the encoding and decoding of affirmation and tabulates according to the response of terminal called to caller MSC, order is consistent with the coded sequence of step 302.
Step 306: caller MSC returns Modify Complete response to calling terminal, and the carrying property parameters is consistent with carrying property parameters in the Modify request message of receiving in the message, i.e. voice.
Referring to shown in Figure 4, as follows to the detailed process of the refusal flow process of the business change of voice by the video telephone that calling terminal is initiatively initiated:
Step 401: calling terminal sends Modify message to caller MSC, and the carrying property parameters is voice in the message.
Step 402: caller MSC is according to the modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, speech coding x, y, z were positioned at before the multimedia coding mm, and promptly voice are preferential.
Step 403: called MS C is according to the sequencing of coding in the encoding and decoding tabulation of receiving, it is preferential to understand speech business, sends Modify message to terminal called, and the carrying property parameters is voice in the message.
Step 404: terminal called returns the response of Modify Reject refusal to called MS C, and the carrying property parameters keeps former carrying attribute, i.e. video telephone in the message.
Step 405: called MS C returns the encoding and decoding of affirmation and tabulates according to the response of terminal called to caller MSC, in the encoding and decoding tabulation, multimedia coding mm is positioned at before speech coding x, y, the z, and promptly video telephone is preferential.
Step 406: caller MSC returns Modify Reject response to calling terminal, and the carrying property parameters keeps former carrying attribute, i.e. video telephone in the message.
Referring to shown in Figure 5, as follows to the detailed process of the successful flow process of visual telephone service change by the voice that calling terminal is initiated:
Step 501: calling terminal sends Modify message to caller MSC, and the carrying property parameters is a video telephone in the message.
Step 502: caller MSC is according to the modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, multimedia coding mm was positioned at before speech coding x, y, the z, and promptly video telephone is preferential.
Step 503: called MS C is according to the sequencing of coding in the encoding and decoding tabulation of receiving, it is preferential to understand visual telephone service, sends Modify message to terminal called, and the carrying property parameters is that video telephone is preferential in the message.
Step 504: terminal called returns ModifyComplete response to called MS C, and the carrying property parameters is consistent with carrying property parameters in the Modify request message of receiving in the message, i.e. video telephone.
Step 505: called MS C returns the encoding and decoding of affirmation and tabulates according to the response of terminal called to caller MSC, order is consistent with the coded sequence of step 502.
Step 506: caller MSC returns Modify Complete response to calling terminal, and the carrying property parameters is consistent with carrying property parameters in the Modify request message of receiving in the message, i.e. video telephone.
Above-mentioned is to change process by the business from the video telephone to voice that terminal is initiated, because after professional the change may be taken place, may be because the network signal grow, or terminal switches to 3G again from 2G, so, in order to satisfy the user greatly, so when network can provide visual telephone service, the business that need carry out from voice to the video telephone changed.
Referring to shown in Figure 6, as follows to the detailed process of the refusal flow process of the business change of video telephone by the voice that terminal called is initiatively initiated:
Step 601: calling terminal sends Modify message to caller MSC, and the carrying property parameters is voice in the message.
Step 602: caller MSC is according to the modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, multimedia coding mm was positioned at before speech coding x, y, the z, and promptly video telephone is preferential.
Step 603: called MS C is according to the sequencing of coding in the encoding and decoding tabulation of receiving, it is preferential to understand speech business, sends Modify message to terminal called, and the carrying property parameters is a video telephone in the message.
Step 604: terminal called returns the response of Modify Reject refusal to called MS C, and the carrying property parameters keeps former carrying attribute, i.e. voice in the message.
Step 605: called MS C returns the encoding and decoding of affirmation and tabulates according to the response of terminal called to caller MSC, in the encoding and decoding tabulation, speech coding x, y, z are positioned at before the multimedia coding mm, and promptly speech business is preferential.
Step 606: caller MSC returns Modify Reject response to calling terminal, and the carrying property parameters keeps former carrying attribute, i.e. voice in the message.
In calling was carried out, terminal can write down the information that each business changes, and the information such as reason that change of last traffic, as, because network switches, signal weakening is initiated, the initiator is network or terminal, and type of service is changed into voice etc. from video telephone.Initiate once more to change the professional Cheng Qian of crossing when terminal, can carry out suitable adjustment according to situation about being write down, in order to avoid frequently change type of service at short notice.
Method of the present invention is initiatively initiated by terminal.Terminal can initiatively initiate to change the process of type of service under multiple situation.When terminal receives network signal, determine that current network type or current location change, need carry out between network switching or when carrying out location registers again/after, can initiatively initiate to change the process of type of service.Also can be by the transmission information of network side timing or not timing, show the current region of this terminal whether satisfy its type of service of just carrying out, come initiatively to initiate to change the process of type of service again by terminal, equally, for occurring phenomenons such as image effect is poor, voice are interrupted in the communication process, be suitable for too.
Further, whether initiatively terminal can the professional right to choose that changes type of service of initiation offer the user with.The user can select by human-computer interaction interface, after terminal receives user's selection, handles accordingly according to user's selection again.Certainly, the user also can pass through human-computer interaction interface, and whether according to the above-mentioned situation that may occur, setting in advance needs initiatively to initiate the professional information that changes, in communication process, terminal can determine whether that needs initiatively initiate professional the change according to these information that sets in advance.As, the user can import specific key assignments by human-computer interaction interface, can think present type of service is changed into another kind of type of service etc., also can offer custom menu, and the user selects.
For example, in calling is carried out, 3G network signal weakening when the current place of terminal judges arrives to a certain degree, be difficult to keep current visual telephone service, but this moment, terminal was not received the professional handoff request of the video telephone of network initiation to voice as yet, and terminal is initiatively initiated the business change of video telephone to voice.And change once more when network condition, strengthen as the 3G network signal, or when from 2G to the 3G network, switching, can also initiatively initiate the business change of voice by terminal to video telephone.If this terminal is a situation of switching back 3G network from the 2G network, terminal need write down and preserve the situation that last traffic changes, promptly because network switching or signal weakening, the business that network or terminal are initiated from the video telephone to voice changes, and judge that any professional change do not taken place again in the centre, the business of initiatively initiating as calling party or callee user changes, and then terminal can initiatively be initiated the business change of voice to video telephone once more.More than be the initiator who needs is changed type of service, i.e. first terminal, initiatively initiating the situation of change type of service sets forth, equally, for second terminal in the both call sides, whether it accepts the business change request that first terminal is initiated, also can offer the user by man-machine interface selects, and judge whether to change type of service according to user's selection, also can determine, also can agree or refuse to change type of service etc. in the acquiescence mode by the information that sets in advance.
In actual application, consider that certain customers may not wish terminal this professional change of initiation automatically, promptly maintain current business model, then can on terminal, increase the appropriate users operation-interface newly, as menu or function button, the user can be provided with flexibly, for example: terminal is not initiated professional the change, terminal is initiated professional the change automatically, terminal is reminded user network to change and is selected decision whether to initiate professional the change according to the user, terminal is provided with decision and how handles according to the user's, professional here change can for video telephone to voice/voice to video telephone etc.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (9)

1. in communication process, realize the method that type of service changes for one kind, it is characterized in that this method may further comprise the steps:
A. the MSC under it of first terminal in the both call sides sends the business modification request, wherein contains the traffic type information that changes to some extent;
B. MSC sends the encoding and decoding tabulation that contains priority level under first terminal by middle tandem MSC MSC under second terminal, wherein limit priority is the encoding and decoding that first terminal is asked the type of service correspondence that changes among the step a, and MSC sends the business modification request according to the encoding and decoding corresponding service type of described limit priority to second terminal again under second terminal;
C. second terminal determines whether to change type of service, if can, then by the MSC under first terminal of MSC, middle tandem MSC under self send with step b in the encoding and decoding tabulation of same sequence, execution in step e, otherwise, then send with the encoding and decoding of step b different order and tabulate execution in step d by the MSC under first terminal of MSC, middle tandem MSC under self;
D. MSC sends to first terminal and revises failure response under first terminal, jumps out this flow process;
E. MSC sends to first terminal and revises success response under first terminal, and the type of service of both call sides is the type of service that first terminal is asked among the step a.
2. method according to claim 1 is characterized in that, described first terminal is that calling terminal, described second terminal are terminal called, or described first terminal is a terminal called, and described second terminal is a calling terminal.
3. method according to claim 1 is characterized in that, described type of service is video telephone, voice, or the multimedia service of different Q OS flows, voice.
4. method according to claim 1 is characterized in that, when described first terminal is that calling terminal, described second terminal are terminal called, when the type of service that described request changes is voice, and calling terminal and terminal called present type of service are video telephone, and then step a comprises:
A1, calling terminal send the business modification request message to caller MSC, and the carrying property parameters is voice in the message;
Step b comprises:
B11, caller MSC be according to the business modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, speech coding was positioned at before the multimedia coding, and promptly voice are preferential;
B12, called MS C send the business modification request message according to the priority orders of coding in the encoding and decoding tabulation of receiving to terminal called, and the carrying property parameters is voice in the message;
Step c comprises:
If terminal called is determined to change type of service, then return the modification success response to called MS C, it is voice that carrying property parameters in the business modification request message that carries property parameters in the message and receive is consistent, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, this encoding and decoding tab sequential is consistent with encoding and decoding tab sequential among the step b, execution in step e;
If terminal called is determined to change type of service, then return the modification failure response to called MS C, to keep former carrying attribute be video telephone to the carrying property parameters in the message, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, in this encoding and decoding tabulation, multimedia coding is that video telephone is preferential before being positioned at speech coding, execution in step d;
Steps d comprises:
Caller MSC returns the modification failure response to calling terminal, and the carrying property parameters is a video telephone in the message;
Step e comprises:
Caller MSC returns the modification success response to calling terminal, and the carrying property parameters is voice in the message.
5. method according to claim 1, it is characterized in that, when described first terminal is that calling terminal, described second terminal are terminal called, when the type of service that described request changes is video telephone, and, calling terminal originated call form is that video telephone is preferential, and the both call sides present type of service is voice, and step a comprises:
A2, calling terminal send the business modification request message to caller MSC, and the carrying property parameters is a video telephone in the message;
Step b comprises:
B21, caller MSC be according to the business modification request of calling terminal, initiates the outer coding/decoding negotiation process of band to called MS C, and during encoding and decoding were tabulated, multimedia coding was positioned at before the speech coding, and promptly video telephone is preferential;
B22, called MS C send the business modification request message according to the priority orders of coding in the encoding and decoding tabulation of receiving to terminal called, and the carrying property parameters is that video telephone is preferential in the message;
Step c comprises:
If terminal called is determined to change type of service, then return the modification success response to called MS C, it is video telephone that carrying property parameters in the business modification request message that carries property parameters in the message and receive is consistent, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, this encoding and decoding tab sequential is consistent with encoding and decoding tab sequential among the step b, execution in step e;
If terminal called is determined to change type of service, then return the modification failure response to called MS C, to keep former carrying attribute be voice to the carrying property parameters in the message, called MS C is according to the response of terminal called, return the encoding and decoding tabulation of affirmation to caller MSC, in the encoding and decoding tabulation, speech coding is that speech business is preferential before being positioned at multimedia coding, execution in step d;
Steps d comprises:
Caller MSC returns the modification failure response to calling terminal, and the carrying property parameters is voice in the message;
Step e comprises:
Caller MSC returns the modification success response to calling terminal, and the carrying property parameters is a video telephone in the message.
6. method according to claim 1 is characterized in that, to determine whether to change type of service be by sending the professional information that changes to the user to second terminal among the step c, and then receives user's selection that changes of whether accepting business and realize.
7. method according to claim 1, it is characterized in that, the user is provided with the professional selection information that changes of whether initiatively initiating in advance in terminal, to determine whether to change type of service be to judge according to the information that whether accepting of setting in advance of the user business that the other side initiates changes to second terminal among the step c.
8. method according to claim 1 is characterized in that, further comprises before step a:
Whether a0, the terminal judges current network of conversing satisfy present type of service, or do not satisfy the priority business that turns back to initial initiation request when professional, if satisfy, then return step a0, otherwise, execution in step a.
9. method according to claim 8, it is characterized in that, judge among the step a0 whether current network satisfies present type of service, or do not satisfy the priority business that turns back to initial initiation request when professional, be to determine according to the current place of terminal network type, current place network load condition and zone, position.
CNB2004100801881A 2004-09-24 2004-09-24 Method of realizing business type change Expired - Fee Related CN100387095C (en)

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