CN101835218A - Method for establishing local exchange of local conversations in call establishing process - Google Patents
Method for establishing local exchange of local conversations in call establishing process Download PDFInfo
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- CN101835218A CN101835218A CN200910117865A CN200910117865A CN101835218A CN 101835218 A CN101835218 A CN 101835218A CN 200910117865 A CN200910117865 A CN 200910117865A CN 200910117865 A CN200910117865 A CN 200910117865A CN 101835218 A CN101835218 A CN 101835218A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W76/10—Connection setup
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Abstract
The invention relates to a method for establishing local exchange of local conversations in a call establishing process, which comprises the following steps of: before sending an assignment request message, judging whether the belonged conversation of a current call is the local conversation or not by an MSC (Mobile Switching Center) Server, and informing the belonged BSC (Base Station Controller) of a conversation participant through the assignment request message; and if the BSC knows that the belonged conversations of the current call and an opposite-end call are the local conversations, subsequently realizing the local exchange of the user plane voices of both conversation parties through the mode of establishing the internal user plane connection between the current call and the opposite-end call. After the invention is adopted, the waste of Abis port and A port transmission resources is avoided, and the local exchange function of the local conversations is realized, so that the exchange of the user plane voices of the local conversations can be finished in a BTS (Base Transceiver Station), a BTS cluster or the BSC.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method of in call establishment, local call being set up local exchange.
Background technology
At existing global system for mobile communications (Global System for Mobile Communications, abbreviate GSM as) in, Mobile Switching Center Server (Mobile Switching Center Server, abbreviate MSC Server as) and base station controller (Base Station Controller, abbreviate BSC as) between adopt the A interface to communicate, and portable terminal (Mobile Station, abbreviate MS as) communicate by the air interface Um Interface with base transceiver station (Base Transceiver Station abbreviates BTS as).In addition, be connected by Abis interface between BTS and the BSC.
The calling procedure that MS initiates in the gsm system as shown in Figure 1, may further comprise the steps:
(1) MS sends Channel Required (channel request abbreviates Channel REQ as) message to BTS on the access channel of interface aloft;
(2) BTS sends Channel Required (channel request abbreviates ChannelRQD as) message to BSC;
(3) after BSC received Channel Required message, the assignment signalling channel sent Channel Activation (channel activates, and abbreviates Channel ACT as) message to BTS;
(4) after BTS receives Channel Activation message, if channel type is correct, then on allocated channel, drive power amplifier, the up reception information that begins, and to BSC transmission ChannelActivation Acknowledge (the channel activation confirmation abbreviates Channel ACT ACK as) message;
(5) BSC sends Immediate Assignment Command (the immediate assignment order abbreviates IMM ASS CMD as) by BTS to MS;
(6) MS sends out the access of SABM (Set Asynchronous Balanced Mode is provided with Asynchronous Balanced Mode) frame;
(7) BTS returns UA (Unnumbered Acknowledgement, unnumbered acknowledge) frame and confirms;
(8) BTS sends out Establishment Indication (set up indication, abbreviate ESTIND as) to BSC, includes CM Service Request (url management service request) message content;
(9) BSC sets up A interface SCCP link, sends CM Service Request (url management service request) to MSC;
(10) MSC returns link affirmation (abbreviating CC as) message to BSC;
(11) MSC sends out CM Service Accepted (url management is professional to be received) message;
(12) caller MS sends out Setup (set up and call out) message;
(13) MSC sends out Call Proceeding (calling is carried out) message to caller MS;
(14) MSC sends out Assignment Request (assignment request to BSC, abbreviate ASS REQ as) message, in this message, distributed A interface CIC (Circuit Identity Codec, cic circuit identification code) or call identifier (Call Identifier abbreviates Call ID as);
(15) BSC distributes voice channel, sends Channel Activation to BTS;
(16) after BTS receives Channel Activation,, then on allocated channel, drive power amplifier if channel type is correct, the up reception information that begins, and to BSC transmission Channel ActivationAcknowledge;
(17) BSC sends Assignment Command (assign order, abbreviate ASS CMD as) by BTS to MS;
(18) MS sends out the SABM frame and inserts on the channel appointed in Assignment Command;
(19) BTS returns the UA frame and confirms;
(20) BTS sends out Establishment Indication to BSC;
(21) MS sends Assignment Complete (appointment is finished, and abbreviates ASS CMP as) message behind the incoming voice channel;
(22) radio traffic channel is with after land circuit all successfully is connected, and BSC sends Assignment Complete message to MSC, and thinks that this calling enters talking state;
(23) MSC sends out Alerting (ring) to caller MS, caller MS ring;
(24) MSC sends out Connect (connection) to caller MS;
(25) caller MS returns Connect Acknowledge (connect and confirm, abbreviate Connect ACK as) to MSC;
(26) caller MS and called MS enter the voice call state.
The called flow process of MS in the gsm system as shown in Figure 2, may further comprise the steps:
(1) when in the service area of paged MS at MSC, MSC sends Paging (paging) message to BSC, comprise paging cell list and TMSI (Temperate MobileSubscriber Indentity in this message, temporary mobile subscriber identity) and IMSI (International MobileSubscriber Identity, international mobile subscriber identity) information;
(2) BSC sends Paging Command (paging command abbreviates PagingCMD as) message to the paging sub-district, the number of paging subchannel and shared timeslot number under comprising in this message;
(3) after BTS receives the Paging Command message of BSC, on the paging subchannel under this paging group, send Paging Request (the paging request abbreviates Paging REQ as) message, comprise paged user's IMSI or TMSI in this message;
(4) behind the MS decoding paging messages,, then will send ChannelRequest message and trigger the Initial Channel Assignment assigning process if discovery is the paging to oneself;
The same calling procedure of stating of follow-up flow process is no longer given unnecessary details at this.
From above-mentioned flow process as can be seen, calling and called user in the gsm system is when setting up calling, and in the process that the A mouth is assigned, no matter this calling is based on TDM (Time Division Multiplex, time division multiplexing) carrying also is based on the IP carrying, all can be call identification of this call distribution.
In the calling and called flow process of gsm system, all the user-plane voice of calling out a side can be passed to media gateway (Media Gateway abbreviates MGW as) by BSC at present, pass to the BSC of opposite end again by MGW, even both call sides is under the same BSC.But, in the GSM of reality network, exist the situation of a large amount of Local Call (local call), promptly both call sides belongs under the same BTS or belongs to the different B TS under same BTS bunch or belong under the same BSC.For these local calls, if continue to use present call flows, then following problem can appear:
(1) for the calling that belongs under the same BTS, the user-plane voice that a side will occur calling out is given BSC by the Abis oral instructions of BTS, BSC sends this user-plane voice to MGW again, MGW sends back former BSC to user-plane voice again, former BSC sends this user-plane voice to the situation of former BTS again, causes the waste of the defeated resource of Abis mouth and A oral instructions;
(2) for the calling between the different B TS that belongs under same BTS bunch, the user-plane voice that a side will occur calling out is given this BTS bunch control BTS by the Abis oral instructions of BTS, this control BTS sends this user-plane voice to BSC by its Abis mouth again, BSC sends this user-plane voice to MGW again, MGW sends back user-plane voice former BSC again, former BSC sends this user-plane voice to above-mentioned control BTS again, above-mentioned control BTS sends this user-plane voice to the situation of former BTS again, cause the waste of the defeated resource of Abis oral instructions between above-mentioned control BTS and BSC, also wasted the defeated resource of A oral instructions simultaneously;
(3) as shown in Figure 3, for the calling that belongs under the same BSC, BSC will occur and send user-plane voice to MGW earlier, MGW sends user-plane voice to the situation of this BSC again, causes the waste of the defeated resource of A oral instructions.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of local call being set up local exchange in call establishment, and local call is realized local function of exchange.
For addressing the above problem, the invention provides a kind of method of in call establishment, local call being set up local exchange, comprising:
Before sending assignment request message, mobile switching center server MSC Server judges whether the conversation under the current calling is local call, and informs base station controller BSC under the conversation participant by described assignment request message;
Described BSC is a local call as if knowing that according to described assignment request message affiliated conversation is called out in current calling and opposite end, then exchanges by this locality of setting up internal user face ways of connecting realization both call sides user-plane voice between the calling of current calling and opposite end follow-up.
Further, said method also can have following feature:
Described conversation participant is any one party among calling and called user both sides or the calling and called user.
Further, said method also can have following feature:
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server then carries the local call identifier if the conversation of judging under the current calling is a local call in the assignment request message that the BSC under the conversation participant sends;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: carry described local call identifier in the assignment request message that described BSC receives.
Further, said method also can have following feature:
Described local call identifier is cic circuit identification code CIC or the call identifier that call out the opposite end;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: BSC is after receiving assignment request message, if judge the local call identifier that wherein carries is cic circuit identification code CIC or the call identifier that call out the opposite end, knows that then it is local call that affiliated conversation is called out in current calling and opposite end.
Further, said method also can have following feature:
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server is that the local call sign is given corresponding value according to judged result, and the BSC under the conversation participant sends the assignment request message of carrying this local call sign then;
BSC knows that according to described assignment request message the conversation under calling out of current calling and opposite end is that local call is meant: after BSC receives assignment request message, know according to the value of local call sign wherein whether the conversation under calling out of current calling and opposite end is local call.
Further, said method also can have following feature:
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server is if the conversation of judging under the current calling is a local call, then be the identical calling sign indicating number of current calling and opposite end call distribution, otherwise be the different calling sign indicating number of said two devices distribution; Wherein, inequality for the calling sign indicating number of two call distributions not belonging to same conversation; Then, described MSC Server carries the corresponding call sign indicating number in the assignment request message that the BSC under current calling and opposite end calling sends respectively;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: after BSC receives described assignment request message, there is the calling that has the same call sign indicating number with current calling on it if judge, knows that then these two the affiliated conversations of calling that have the same call sign indicating number are local call.
Further, said method also can have following feature:
Described BSC also comprised the step that judges whether to use local function of exchange before setting up described internal user face connection, be specially:
Whether the voice coding modes of judging the calling and called both sides is compatible, as if compatible or incompatible but described BSC inside codec arranged, and then can use local function of exchange;
Otherwise can not use local function of exchange.
Further, said method also can have following feature:
Described BSC connects and to be meant at the follow-up internal user face of setting up: described BSC is being known that current calling and opposite end are called out and is just being set up described internal user face after affiliated conversation is local call and be connected.
Further, said method also can comprise:
Described BSC finishes message and informs that its internal user face of the latter connects and set up by replying to MSC Server to assign after finishing the internal user face and connect setting up.
Further, said method also can have following feature:
Described BSC connects and to be meant at the follow-up internal user face of setting up: described BSC replys appointment to described MSC Server and finishes message after knowing that the conversation under calling out of current calling and opposite end is local call, and whether it can use local function of exchange to inform the latter;
Described MSC Server if judging described local call can use local function of exchange, then sends local exchange command to described BSC when follow-up the needs after receiving that message is finished in described appointment;
After described BSC receives this order, set up the internal user face and connect, bring into use the local function of exchange of local call then.
After adopting the present invention, avoided the waste of the defeated resource of Abis mouth and A oral instructions, realized this locality exchange (Local Switch is called for short LS) function of local call, make local call can be in BTS, in the BTS bunch or just can finish the exchange of user-plane voice in the BSC.
Description of drawings
Fig. 1 is a calling procedure of the prior art;
Fig. 2 is a called flow of the prior art;
Fig. 3 is the schematic diagram that user-plane voice is transmitted between MS, BSC and MGW in the prior art;
Fig. 4 be in the embodiment of the invention in call establishment, the A interface signaling process figure that assignment request message is optimized;
Fig. 5 is for having realized the schematic diagram that user-plane voice is transmitted between local exchange later MS, BSC and MGW to local call in the embodiment of the invention;
Fig. 6 be in the embodiment of the invention in call establishment, MSC Server informs by the local call identifier whether the conversation under the current calling of BSC is the flow chart of local call;
Flow chart when Fig. 7 is the call identifier called out of opposite end or cic circuit identification code for local call identifier in the flow process shown in Figure 6 in the embodiment of the invention;
Fig. 8 be in the embodiment of the invention in call establishment, MSC Server informs by give specific value for the local call identifier whether the conversation under the current calling of BSC is the flow chart of local call;
Fig. 9 be in the embodiment of the invention in call establishment, MSC Server is by informing for the mode of the identical calling sign indicating number of current calling and opposite end call distribution whether the conversation under the current calling of BSC is the flow chart of local call;
Figure 10 connects the signaling process figure that whether has set up for BSC notice MSC Server internal user face in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
The method of local call being set up local exchange in call establishment provided by the invention as shown in Figure 4, comprising:
(1) MSC Server is except finishing existing protocol standard function, before sending assignment request message, utilize prior art to judge whether the conversation under the current calling is Local Call, and inform the BSC of conversation under the participant by assignment request message, wherein, the conversation participant can be any one party among calling and called user both sides or the calling and called user;
(2) BSC is if know that according to assignment request message it is local call that affiliated conversation is called out in current calling and opposite end, then exchange by this locality of setting up internal user face ways of connecting realization both call sides user-plane voice between the calling of current calling and opposite end follow-up, user-plane voice between this both call sides can no longer be transmitted through core net, send to the other side but directly connect, as shown in Figure 5 by this internal user face.This internal user face connects the position set up according to the difference of both call sides position and difference: if current calling and opposite end calling belong to same BTS inside, then this internal user face connection is based upon this BTS inside, and user-plane voice is transmitted to calling both sides by this BTS; Belong to same BTS bunch inside if call out current calling and opposite end, then this internal user face connection is based upon this BTS bunch inside, and user-plane voice is transmitted to calling both sides by this BTS bunch inside; Belong to same BSC inside if call out current calling and opposite end, then this internal user face connection is based upon this BSC inside, and user-plane voice is transmitted to calling both sides by this BSC.
In above-mentioned steps (1), MSC Server inform conversation under the participant BSC and BSC know call out under conversation whether be that local call can be in the following ways:
Mode one: as shown in Figure 6, MSC Server is a local call if judge the affiliated conversation of current calling, then carry a local call identifier in the assignment request message of the BSC under sending to the conversation participant, this identifier is used to inform that this time of BSC conversation (being made of current calling and the opposite end calling corresponding with current calling) is local call, otherwise, directly send assignment request message, wherein do not carry the local call identifier; After BSC receives assignment request message, wherein carry the local call identifier, know that then it is local call that affiliated conversation is called out in current calling and corresponding opposite end if judge.
Preferably, when the conversation under MSC Server judges current calling was local call, the local call identifier that carries in the assignment request message of the BSC under sending to the calling of current calling and opposite end respectively was identical.
In this kind mode, this local call identifier can be the unique serial number that MSC Server distributes for this conversation, its form can be as shown in table 1, wherein, the local call identifier takies 8 bits, and the bit 1,2,3 of low level and the value of bit 4 are used for representing the local call identifier of this conversation.MSC Server is the local call identifier difference of different local call distribution by the form of this kind serial number.
Table 1 local call identifier-format
In addition, this local call identifier also can be cic circuit identification code CIC or the call identifier (Call Identifier) that constitutes the opposite end calling of local call with current calling, CIC herein is existing circuit identifier (being used to indicate the A mouth calling that is carried on the TDM Transport), and CallIdentifier herein also is existing C all ID (being used to indicate the A mouth calling that is carried on the IP Transport).Preferably, as shown in table 2, this local call identifier is made up of Local Call reference ID for TDM and Local Call reference ID for IP, when call out when the A mouth transmits based on TDM the opposite end, use Local Call reference ID for TDM as the local call identifier, its value takies 2 octets; And when opposite end calling A mouth transmits based on IP, use Local Call reference ID for IP as the local call identifier, its value takies 4 octets.Wherein the method for expressing of Circuit Identity Codec and Call Identifier is a prior art.
Table 2 local call identifier structural table
As shown in Figure 7, in such cases, BSC is cic circuit identification code CIC or the call identifier that call out the opposite end if judge the local call identifier that wherein carries after receiving assignment request message, knows that then it is local call that affiliated conversation is called out in current calling and opposite end.
Mode two: as shown in Figure 8, MSC Server judges whether the conversation under the current calling is local call, and be that local call sign is given corresponding value according to judged result, the BSC under the conversation participant sends the assignment request message of carrying this local call sign then; After BSC receives assignment request message, can know according to the value of the sign of local call wherein current calling and opposite end call out whether constituted local call.
In the specific implementation, as shown in table 3, local call sign can take 8 bits, can use the value of the bit 1 of low level to indicate the state of conversation, and other bit can be reserved.Particularly, when bit 1 value is 1, represent that this time conversation is local call; When the value of bit 1 is 0, represent that this time conversation is not a local call, vice versa.
The form of table 3 local call sign
Mode three: as shown in Figure 9, MSC Server then is the identical calling sign indicating number of current calling and opposite end call distribution if judging the affiliated conversation of current calling is local call, otherwise is that said two devices distributes different calling sign indicating numbers.Wherein, for the calling sign indicating number of two call distributions not belonging to same conversation inequality, and this calling sign indicating number can but be not limited to adopt the described form of above-mentioned table 1.Then, this MSC Server carries the corresponding call sign indicating number in the assignment request message that the BSC under current calling and opposite end calling sends respectively; After BSC receives assignment request message, search whether there is the calling that has the same call sign indicating number with current calling at all-calls on it,, think that then the conversation under two callings that have the same call sign indicating number is a local call if having, otherwise, think that the conversation under the current calling is not a local call.
In the above-mentioned steps (2), BSC can also may further comprise the steps before setting up the connection of internal user face:
The voice coding modes that call out the voice coding modes of more current calling and opposite end, and according to comparative result whether decision can set up the internal user face and connect (promptly whether can use local function of exchange).6 kinds of situations can appear in this moment, and are as shown in table 4.
Table 4 code encoding/decoding mode is to setting up the influence that the internal user face connects
As can be seen from the above table, appearance situation 1,2,3 o'clock, promptly when the voice coding modes of both call sides is compatible, BSC can set up the transmission channel (being that the internal user face connects) of direct transmission both call sides user-plane voice, conversation one side's user-plane voice directly can be sent to conversation the opposing party by this transmission channel.
When situation 4,5 occurring, be that the both call sides voice coding modes is incompatible, but when there is TC BSC inside, BSC sets up the internal user face and connects, a side the user-plane voice of being about to converse sends the TC in the BSC earlier to, after by TC the user-plane voice of receiving being converted to the coded system of the opposing party's compatibility, send conversation the opposing party again to.
When the situation 6 of appearance, promptly the both call sides voice coding modes is incompatible, and BSC inside can't realize the local function of exchange of local call when not having TC, promptly can not set up the internal user face and connect.
In above-mentioned steps (2), the follow-up internal user face of setting up connects and can be divided into following two kinds of situations:
(a) just carry out after the conversation under BSC is known current calling and opposite end calling is local call;
(b) BSC is receiving MSC Server foundation again behind the local exchange command of its transmission.
For above-mentioned situation (a), in order to guarantee carrying out smoothly of business such as follow-up value-added service (as Ring Back Tone service etc.) and Lawful Interception, BSC under the conversation participant is after finishing internal user face connection foundation, can finish message and inform that its internal user face of the latter connects and set up by reply assigning, as shown in figure 10 to MSC Server.MSC Server if judge the preparation that the both sides that constitute this local call have finished local exchange, can use local exchange after receiving that message is finished in appointment.This moment, user-plane voice still can be by the transmission that is connected between BSC and the MGW.MSC Server can notify BSC to use the local function of exchange of local call when needed, and removes being connected between BSC and the MGW.Embodiment can be that MSC Server sends a piece of news to BSC, informs that BSC brings into use local exchange local call function, and this message is the signaling that a newly-increased MSC Server sends to BSC.After BSC receives this message, use the local function of exchange of local call, no longer transmit user-plane voice by being connected between BSC and the MGW, and remove its with MGW between be connected.
BSC informs that it can be to finish in appointment to add a local call in the message and connect and finish designator that its internal user face of MSC Server connects the mode of whether having set up, its form is as shown in table 5, the local call connection is finished designator and can be taken 8 bits, use the bit 1 of low level to indicate the local state that exchanges, other bit can be reserved.Particularly, can use bit 1 to indicate BSC whether to be ready to use the function of the local exchange of local call.When bit 1 value was 1, expression BSC can use the local function of exchange of local call, and when the value of bit 1 was 0, expression BSC can not use the local function of exchange of local call, and vice versa.
Table 5 local call connects finishes the designator form
For above-mentioned situation (b), the BSC under the conversation participant is a local call knowing that affiliated conversation is called out in current calling and opposite end, replys to assign to MSC Server and finishes message, and whether it can use local function of exchange to inform the latter.MSC Server if judging above-mentioned local call can use local function of exchange, then sends local exchange command to this BSC when follow-up the needs after receiving that message is finished in appointment, this message is the signaling that a newly-increased MSC Server sends to BSC.After BSC receives this order, set up the internal user face and connect, bring into use the local function of exchange of local call then, no longer transmit user-plane voice by being connected between BSC and the MGW, and remove its with MGW between be connected.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. in call establishment, local call is set up the local method that exchanges for one kind, comprising:
Before sending assignment request message, mobile switching center server MSC Server judges whether the conversation under the current calling is local call, and informs base station controller BSC under the conversation participant by described assignment request message;
Described BSC is if know that according to described assignment request message the conversation under calling out of current calling and opposite end is a local call, and then internal user face ways of connecting realizes that this locality of this both call sides user-plane voice exchanges between the calling of current calling and opposite end by setting up follow-up.
2. the method for claim 1 is characterized in that,
Described conversation participant is any one party among calling and called user both sides or the calling and called user.
3. method as claimed in claim 2 is characterized in that,
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server then carries the local call identifier if the conversation of judging under the current calling is a local call in the assignment request message that the BSC under the conversation participant sends;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: carry described local call identifier in the assignment request message that described BSC receives.
4. method as claimed in claim 3 is characterized in that,
Described local call identifier is cic circuit identification code CIC or the call identifier that call out the opposite end;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: BSC is after receiving assignment request message, if judge the local call identifier that wherein carries is cic circuit identification code CIC or the call identifier that call out the opposite end, knows that then it is local call that affiliated conversation is called out in current calling and opposite end.
5. method as claimed in claim 2 is characterized in that,
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server is that the local call sign is given corresponding value according to judged result, and the BSC under the conversation participant sends the assignment request message of carrying this local call sign then;
BSC knows that according to described assignment request message the conversation under calling out of current calling and opposite end is that local call is meant: after BSC receives assignment request message, know according to the value of local call sign wherein whether the conversation under calling out of current calling and opposite end is local call.
6. the method for claim 1 is characterized in that,
Described MSC Server judges whether the conversation under the current calling is local call, and inform that by described assignment request message the BSC of conversation under the participant is meant: described MSC Server is if the conversation of judging under the current calling is a local call, then be the identical calling sign indicating number of current calling and opposite end call distribution, otherwise be the different calling sign indicating number of said two devices distribution; Wherein, inequality for the calling sign indicating number of two call distributions not belonging to same conversation; Then, described MSC Server carries the corresponding call sign indicating number in the assignment request message that the BSC under current calling and opposite end calling sends respectively;
BSC knows that according to described assignment request message it is that local call is meant that affiliated conversation is called out in current calling and opposite end: after BSC receives described assignment request message, there is the calling that has the same call sign indicating number with current calling on it if judge, knows that then these two the affiliated conversations of calling that have the same call sign indicating number are local call.
7. the method for claim 1 is characterized in that,
Described BSC also comprised the step that judges whether to use local function of exchange before setting up described internal user face connection, be specially:
Whether the voice coding modes of judging the calling and called both sides is compatible, as if compatible or incompatible but described BSC inside codec arranged, and then can use local function of exchange;
Otherwise do not have local function of exchange.
8. as any described method in the claim 1～7, it is characterized in that,
Described BSC connects and to be meant at the follow-up internal user face of setting up: described BSC is being known that current calling and opposite end are called out and is just being set up described internal user face after affiliated conversation is local call and be connected.
9. method as claimed in claim 8 is characterized in that, also comprises:
Described BSC finishes message and informs that its internal user face of the latter connects and set up by replying to MSC Server to assign after finishing the internal user face and connect setting up.
10. as any described method in the claim 1～7, it is characterized in that,
Described BSC connects and to be meant at the follow-up internal user face of setting up: described BSC replys appointment to described MSC Server and finishes message after knowing that the conversation under calling out of current calling and opposite end is local call, and whether it can use local function of exchange to inform the latter;
Described MSC Server if judging described local call can use local function of exchange, then sends local exchange command to described BSC when follow-up the needs after receiving that message is finished in described appointment;
After described BSC receives this order, set up the internal user face and connect, bring into use the local function of exchange of local call then.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910117865A CN101835218A (en) | 2009-03-13 | 2009-03-13 | Method for establishing local exchange of local conversations in call establishing process |
| PCT/CN2010/071029 WO2010102585A1 (en) | 2009-03-13 | 2010-03-12 | Method, device and system for establishing local switch for a local conversation during call establishment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910117865A CN101835218A (en) | 2009-03-13 | 2009-03-13 | Method for establishing local exchange of local conversations in call establishing process |
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| CN101835218A true CN101835218A (en) | 2010-09-15 |
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| CN200910117865A Pending CN101835218A (en) | 2009-03-13 | 2009-03-13 | Method for establishing local exchange of local conversations in call establishing process |
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| CN (1) | CN101835218A (en) |
| WO (1) | WO2010102585A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045704A (en) * | 2009-10-14 | 2011-05-04 | 中兴通讯股份有限公司 | Method and system for establishing local exchange for local call in call establishing process |
| WO2011134354A1 (en) * | 2010-04-30 | 2011-11-03 | 中兴通讯股份有限公司 | System, method and base station subsystem for realizing handover in local switch |
| WO2011153870A1 (en) * | 2010-06-11 | 2011-12-15 | 中兴通讯股份有限公司 | System, method and base station for implementing local switching transmission |
| CN102301810A (en) * | 2011-05-30 | 2011-12-28 | 华为技术有限公司 | Method for allocating channels, base station equipment, controller and communication system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI941125A (en) * | 1994-03-09 | 1995-09-10 | Nokia Telecommunications Oy | Mobile communication system and call control method |
| US20030086418A1 (en) * | 2001-11-06 | 2003-05-08 | Mcintosh Chris P. | Intelligent private 3G network and method of operating the same |
| CN101309505B (en) * | 2007-05-15 | 2011-12-07 | 华为技术有限公司 | Voice service routing method and system in radio communication system |
| CN101159905B (en) * | 2007-11-07 | 2010-04-21 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
-
2009
- 2009-03-13 CN CN200910117865A patent/CN101835218A/en active Pending
-
2010
- 2010-03-12 WO PCT/CN2010/071029 patent/WO2010102585A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045704A (en) * | 2009-10-14 | 2011-05-04 | 中兴通讯股份有限公司 | Method and system for establishing local exchange for local call in call establishing process |
| WO2011134354A1 (en) * | 2010-04-30 | 2011-11-03 | 中兴通讯股份有限公司 | System, method and base station subsystem for realizing handover in local switch |
| US8718648B2 (en) | 2010-04-30 | 2014-05-06 | Zte Corporation | System, method and base station subsystem for realizing handover in local switch |
| WO2011153870A1 (en) * | 2010-06-11 | 2011-12-15 | 中兴通讯股份有限公司 | System, method and base station for implementing local switching transmission |
| CN102301810A (en) * | 2011-05-30 | 2011-12-28 | 华为技术有限公司 | Method for allocating channels, base station equipment, controller and communication system |
| CN102301810B (en) * | 2011-05-30 | 2014-04-02 | 华为技术有限公司 | Method for allocating channels, base station equipment, controller and communication system |
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| Publication number | Publication date |
|---|---|
| WO2010102585A1 (en) | 2010-09-16 |
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