CN102045794A - Call switching method between base station systems and mobile communication system - Google Patents
Call switching method between base station systems and mobile communication system Download PDFInfo
- Publication number
- CN102045794A CN102045794A CN2009101107819A CN200910110781A CN102045794A CN 102045794 A CN102045794 A CN 102045794A CN 2009101107819 A CN2009101107819 A CN 2009101107819A CN 200910110781 A CN200910110781 A CN 200910110781A CN 102045794 A CN102045794 A CN 102045794A
- Authority
- CN
- China
- Prior art keywords
- call
- calling
- user
- inner passage
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a call switching method between base station systems and a mobile communication system. The method comprises the following steps of: after a mobile switching centre (MSC) receives a first call switching request message sent by a source base station controller (BSC), sending a switching request message carrying call information identifiers to a target BSC if the MSC supports local exchange; after the target BSC receives the switching request message and finds a second call forming a local call with a third call according to the call information identifiers, constructing an internal channel for transmitting the user side voice of the second call and the third call and bypassing a core network; and after the first call is switched to the target BSC, transmitting the user side voice of the second call and the third call by using the internal channel.
Description
Technical field
The present invention relates to the communications field, relate in particular to call handover method and mobile communication system between a kind of base station system (BSS).
Background technology
At existing global system for mobile communications (Global System for Mobile Communications, abbreviate GSM as) in, (the Mobile Switching Center Server of mobile switching centre, abbreviate MSC Server or MSC as) and base station controller (Base Station Controller abbreviates BSC as) between adopt the A interface to communicate; And communicate by Um Interface between portable terminal (Mobile Station abbreviates MS as) and the base station (Base Transceiver Station abbreviates BTS as); In addition, be connected by Abis interface between BTS and the BSC.
Gsm system is when call setup, no matter this calling is based on TDM (Time DivisionMultiplexing, time division multiplexing) carrying also is based on IP (Internet Protocol, Internet Protocol) carrying, in the process that the A interface is assigned, can be call identification of each call distribution.
Fig. 1 is the calling switching flow figure between BSS (comprising BSC and BTS) in the existing gsm system, and as shown in Figure 1, this flow process comprises the steps:
101:MS sends measurement report (Measurement Report) to BTS1, and BTS1 is transmitted to BSC1 with measurement report again;
102:BTS1 sends to switch to MSC and requires (Handover Required is called for short HandoverRQD) message;
103:MSC sends handoff request (Handover Request is called for short Handover REQ) message and gives switching target BSC (BSC2);
104:BSC2 activates (Channel Activation is called for short Channel ACT) message to the BTS2 of Target cell transmitting channel, to activate channel;
105:BTS2 is to BSC2 Return Channel activation confirmation (Channel Activation Acknowledge is called for short Channel Activation ACK) message;
106:BSC2 sends Handover Request Acknowledge (Handover REQ ACK) message and gives MSC after activating new channel, and notice MSC channel is ready to;
107:MSC sends switching command (Handover CMD) message to BSC1;
108:BSC1 sends switching command message to BTS1, gives MS by BTS1 with this forwards;
After 109:MS receives switching command, attempt inserting, send switching access (HandoverAccess) message and give BTS2 from BTS2;
After 110:BTS2 receives that the switching of MS transmission inserts message, send to switch and find that (HandoverDetect) message is to BSC2;
111:BSC2 sends handover finding information to MSC;
112～113:BTS2 sends PHY INFO (physical message) message to MS, comprises the contents such as synchronizing information that MS can correctly be inserted in this message;
After 114:MS receives PHY INFO, send SABM (Set Asynchronous BalancedMode is provided with Asynchronous Balanced Mode) frame to BTS2;
After 115:BTS2 receives the SABM frame, will send and set up indication (EST IND) message to BSC2, notice BSC2 Radio Link is set up;
116: send when setting up Indication message, BTS2 responds UA (UnnumberedAcknowledgement, unnumbered acknowledge) frame to MS, and notice MS radio link layer is set up;
117:MS sends switching and finishes (Handover Complete) message to BTS2, and BTS2 transmits handoff completion message and gives BSC2, and notice BSC2 switching is finished;
118:BSC2 sends handoff completion message to MSC;
After 119～120:MSC receives the handoff completion message of BSC2 transmission, send clear command (ClearCMD) message and give BSC1, the local release of BSC1 initiation discharges former channel, responds simultaneously to remove and finishes (Clear CMP) message to MSC, and the expression removing is finished.
At present in gsm system, the side of user-plane voice all will call out to(for) ongoing conversation passes to media gateway (Media Gateway by BSC by the A interface, abbreviate MGW as), pass to the BSC of call peer again by MGW, even both call sides all is under the same BSC.But, in the gsm system of reality, exist the situation of a large amount of local calls (local call), so-called local call is meant that the both sides of calling belong under the same BTS, perhaps belong to same BTS bunch of following different B TS (BTS under same BTS bunch belongs to a BSC), perhaps belong under the same BSC.To these local calls, if continue to use present call flows, then:
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 Abis mouth and A interface transfer resource;
2) for the calling that belongs to the different B TS 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 BTS bunch 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 former BTS bunch control BTS again, former BTS bunch control BTS sends this user-plane voice to the situation of former BTS again, cause BTS bunch the control BTS and the waste of the defeated resource of the Abis oral instructions between BSC, also wasted A interface transfer resource simultaneously;
3) for the calling that belongs under the same BSC, BSC will occur and send user-plane voice to MGW earlier, MGW sends back user-plane voice the situation of former BSC again, causes the waste of A interface transfer resource.As shown in Figure 2, the user-plane voice 1 that MS1 sends sends to MGW in the core net by BSS, returns to BSS by MGW again, sends to MS2 by BSS then; The user-plane voice 2 that MS2 sends is also similar.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and call handover method and mobile communication system between the BSS of waste of a kind of Abis of avoiding mouth and A interface transfer resource are provided.
In order to address the above problem, the invention provides the call handover method between a kind of base station system, this method comprises:
Call handover method between a kind of base station system is characterized in that, this method comprises:
Moving exchanging center MSC if MSC supports local the exchange, then sends the handoff request message of carrying the call-information identifier to target BS C after first switching of calling out that receives source base station controller BSC transmission requires message;
After receiving handoff request message, after target BS C called out the second party calling that constitutes local call according to call-information identifier discovery and the 3rd, foundation was used for without transmission second calling of core net and the inner passage of the 3rd user-plane voice of calling out;
After first calling switches to target BS C, use inner passage transmission second to call out and the 3rd user-plane voice of calling out.
In addition, the call-information identifier is second cic circuit identification code CIC or the call identifier Call ID that calls out.
In addition, the call-information identifier is that MSC is the identical conversation identification number of first calling and second call distribution.
In addition, if MSC supports local exchange, when call setup, MSC is for calling out participant assigns talk information identifier.
In addition, target BS C sets up the inner passage in the following way:
Target BS C is that voice coding modes is selected in the 3rd calling, and second calling and the 3rd voice coding modes of calling out are compared:
If the voice coding modes of second calling and the 3rd calling is compatible, then the inner passage of second calling and the 3rd user-plane voice of calling out is directly transmitted in target BS C foundation between the user of second calling and the 3rd calling;
If second calling and the 3rd voice coding modes of calling out are incompatible, and comprise codec unit among the target BS C, then in the inner passage, be provided for the codec unit that the voice coding modes of the 3rd calling or second calling is changed.
In addition, after target BS C sets up the inner passage, receive handover finding information before, also the current state according to second calling judges whether to allow to use inner passage transmission second to call out and the 3rd user-plane voice of calling out, and only just uses inner passage transmission second to call out and the 3rd user-plane voice of calling out when judged result is permission.
In addition, if judged result uses inner passage transmission second to call out and the 3rd user-plane voice of calling out for allowing, then target BS C is behind the handoff completion message that receives the target BTS transmission, dismounting first calling and second is called out and is used for being connected of transmission user face voice at the A interface, and notice MSC removes first calling and second calling is used for being connected of transmission user face voice at the A interface.
In addition, BSC notifies MSC dismounting first calling and second calling to be used for being connected of transmission user face voice at the A interface by comprise the local exchange of local call designator in handoff completion message;
Whether the local exchange of local call designator is used to identify and has used the inner passage to carry out second to call out and the transmission of the user-plane voice of the 3rd calling.
The present invention also provides a kind of mobile communication system, comprises moving exchanging center MSC, source base station controller BSC and target BS C, it is characterized in that,
MSC is used for if MSC supports local the exchange, then sending the handoff request message of carrying the call-information identifier to target BS C after first switching of calling out that receives source BSC transmission requires message;
Target BS C is used for after receiving handoff request message, call out the second party calling of formation local call according to call-information identifier discovery and the 3rd after, foundation is used for without transmission second calling of core net and the inner passage of the 3rd user-plane voice of calling out, and after first calling switches to target BS C, use inner passage transmission second to call out and the 3rd user-plane voice of calling out.
In addition, target BS C also is used for after setting up the inner passage, current state according to second calling judges whether to allow to use inner passage transmission second to call out and the 3rd user-plane voice of calling out, and only just uses inner passage transmission second to call out and the 3rd user-plane voice of calling out when judged result is permission.
To sum up, adopt method and system of the present invention, be used for without the inner passage of core net transmission user face voice by between BSS, setting up, make after the calling switching of finishing between BSS, the user-plane voice that constitutes the calling of local call can directly be transmitted without the MGW of core net, has avoided the waste of Abis mouth and A interface transfer resource.
Description of drawings
Fig. 1 is the calling switching flow figure between BSS (comprising BSC and BTS) in the existing gsm system;
Fig. 2 is in the prior art, to belonging to the local call of same BSC, carries out the schematic diagram of user-plane voice transmission between portable terminal, BSC and MGW;
Fig. 3 is after having carried out local exchange, to belonging to the local call of same BSC, carries out the schematic diagram of user-plane voice transmission between portable terminal and BSC;
Fig. 4 is the switching flow figure between BSS (comprising BSC and BTS) in the embodiment of the invention gsm system;
Fig. 5 is a kind of data structure schematic diagram of the call-information identifier in the embodiment of the invention;
Fig. 6 is the another kind of data structure schematic diagram of the call-information identifier in the embodiment of the invention;
Fig. 7 is a kind of structural representation of the designator in the embodiment of the invention.
Embodiment
Core concept of the present invention is, realize function (the Local Call Local Switch of the local exchange of local call by BSS (comprising BSC and BTS), be called for short LCLS), promptly the MGW by core net does not directly send to the opposing party with a side's of local call user-plane voice, as shown in Figure 3, after the user-plane voice 1 that MS1 sends arrived BSS, BSS directly sent it to MS2 without the MGW of core net; The user-plane voice 2 that MS2 sends is also similar.
To can realize that each the network element entity in the mobile communication system (for example, gsm system) of the local function of exchange of local call is briefly described to the embodiment of the invention below; The annexation of each network element entity (be interacting message relation) will be described in detail when the inventive method is described follow-up.
Comprise in the gsm system of the present invention: BSS1 (source BSS), BSS2 (target BS S) and MSC; Comprise BTS1 (source BTS) and BSC1 (source BSC) among the BSS1; Comprise BTS2 (target BTS) and BSC2 (target BS C) among the BSS2.
Specifically, MSC is except the function of finishing the existing protocol regulation, when the calling switching of carrying out between BSS (switching to BSS2) by BSS1, MSC requires (Handover Required) message to know the target BS C (BSC2) of switching according to the switching that source BSC (BSC1) sends to MSC, if MSC supports local exchange, then in sending to the handoff request message of target BS C, carry the call-information identifier, the conversation identification number of the calling that this identifier is used to inform that switching target BSC need switch has the calling of same calls identification number and the calling of this switching and constitutes a pair of conversation with it.
For convenience, the several callings that relate in the handoff procedure are carried out as giving a definition: the calling that need switch is first calling, another calling party with a pair of conversation of the first calling formation before the switching is second calling, and first calling of calling out after switching is the 3rd calling.
Target BS C (BSC2) is after receiving handoff request message, according to the call-information identifier in the handoff request message, know that the calling (the 3rd calls out) that will switch under this BSC constitutes local call with the just calling under its service (second calling) after switching.Switching target BSC sets up the inner passage of the local exchange of local call that is used for these two callings, and this inner passage can be based upon a BTS inside, also can be based upon a BTS bunch of inside, also can be based upon a BSC inside.
Target BS C (BSC2) adds the local call connection and finishes designator after finishing the inner passage that is used for the local exchange of local call in replying to the Handover Request Acknowledge of MSC (Handover Request Acknowledge) message.This designator is used to inform that calling (first calls out) that MSC switches after switching to target BS C, will use the function of the local exchange of local call.
Target BS C (BSC2) and MSC use the local function of exchange of local call after finishing switching, remove simultaneously first call out and second BSC that calls out and MGW between be connected.
Below in conjunction with drawings and Examples the relation of the interacting message between method of the present invention and above-mentioned each network element is described in detail.
Fig. 4 is the switching flow figure between BSS (comprising BSC and BTS) in the embodiment of the invention gsm system, and as shown in Figure 4, this flow process comprises the steps:
401～402: identical with 101～102;
403:MSC sends handoff request (Handover Request) message and gives switching target BSC (BSC2);
In handoff procedure, after the switching of source BSC (BSC1) transmission of receiving switching requires message,, then in the handoff request message that sends to target BS C, add the call-information identifier if MSC supports local call.
Optionally, the call-information identifier is second cic circuit identification code CIC (Circuit Identity Codec) or the call identifier of calling out (CallIdentifier abbreviates Call ID as) that constitutes conversation with first calling (to be switched calling).The call-information identifier can be included in as shown in Figure 5 the data structure, this data structure is made up of Local Call reference ID for TDM (the local call reference identifier that is used for TDM) and Local Call reference ID for IP (the local call reference identifier that is used for IP) two parts, as shown in table 1, CIC is included in the Local Call reference ID for TDM part, and CI comprises in the Local Call reference ID for IP section.When the opposing party of local call when the A interface transmits based on TDM, use Local Call reference ID for TDM partly to carry the CIC value, and the CI value of Local Call reference ID for IP section can be sky; And when the opposing party of local call when the A interface transmits based on IP, use Local Call reference ID for IP section to carry the CI value, and Local Call reference ID for TDM partial C IC value can be sky.When BSC finds to have a certain calling to use sign in the call-information identifier, think that calling out words for these two is local call.Wherein the method for expressing of Circuit Identity Codec and Call Identifier is a prior art.
Table 1 call-information identifier structural table
Need to prove, when call setup, for the MSC that supports local function of exchange, MSC need by assignment request message with above-mentioned call-information identifier send to the conversation participant under BSC, when a certain side of calling is switched, MSC need send to incision BSC with above-mentioned call-information identifier by handoff request message, thereby makes BSC can know the call-information identifier of calling.
Optionally, the call-information identifier can be included in as shown in Figure 6 the data structure, this data structure is made up of the conversation identification number, this conversation identification number can be used to represent some conversations, the calling both sides of conversation is used identical conversation identification number, when incision BSC finds to have two callings to use identical conversation identification number, think that this conversation is local call.This conversation identification number can be the unique serial number that MSC Server distributes for this conversation, i.e. first calling, second is called out identical with the value of the conversation identification number that the 3rd calling is used, and should not repeat by the conversation identification number with the conversation identification number that other conversation is used, its form can be as shown in table 2, wherein, the call-information identifier takies 8 bits, and the bit 1,2,3 of low level and the value of bit 4 are used for representing the call-information identifier of this conversation.MSCServer is the call-information identifier difference of different conversation distribution by the form of this kind serial number.
Table 2Global Call Reference form
This conversation identification number can but be not limited to adopt above-mentioned table 2 form.
Need to prove, when call setup, for the MSC that supports local function of exchange, MSC need by assignment request message with above-mentioned call-information identifier send to the conversation participant under BSC, when a certain side of calling is switched, MSC need send to incision BSC with above-mentioned call-information identifier by handoff request message, thereby makes BSC can both know the call-information identifier of calling in call establishment and handoff procedure.
Optionally, MSC is in order to inform clearly whether BSC wishes this local call is used local function of exchange, MSC can add local exchange designator in sending to the handoff request message of BSC, this designator is used to inform whether BSC uses local function of exchange to this local call.This designator can adopt form as shown in Figure 7, and wherein, local exchange designator takies 8 bits, uses the bit 1 of low level to indicate whether realize local exchange in handoff procedure, and other bits can be reserved.The value of bit 1 is as shown in table 3:
| |
Wish to use the local function of exchange of |
| Bit | |
| 1=0 | Do not wish to use the local function of exchange of local call |
Table 3
404:BSC2 activates message to the BTS2 of Target cell transmitting channel;
In addition, BSC2 is after receiving handoff request message, if have the call-information identifier in the handoff request message, if BSC2 finds this calling and will constitute local call with the calling that the call-information identifier is identified after switching, therefore BSC2 is except that finishing the wireless channel preparation, also to directly set up the inner passage that is used to transmit this local call user-plane voice in that BSS is inner, and not with the MGW passage that connects.
When setting up above-mentioned inner passage, BSC is after voice coding modes is selected in the calling of switching, and the opposing party's of the voice coding modes selected and conversation voice coding modes is compared.6 kinds of situations can appear in this moment, and are as shown in table 4:
| Whether both call sides codec is compatible | Whether BSC has TC | Whether MSC has TC | Whether can realize LCLS (using TC) | Whether can realize LCLS (not using TC) | |
| 1 | Y | Y | Y | Y | Y |
| 2 | Y | Y | N | Y | Y |
| 3 | Y | N | Y | Need not TC | Y |
| 4 | N | Y | Y | Y | N |
| 5 | N | Y | N | Y | N |
| 6 | N | N | Y | N | N |
Table 4
When appearance the 1st, 2,3 kind of situation, promptly under the situation of the voice coding modes compatibility of both call sides, BSC2 is when setting up the inner passage, set up the transmission channel (inner passage) that directly transmits the both call sides user-plane voice, that is, conversation one side's user-plane voice is directly sent to the opposing party of conversation.
When occurring the 4th, during 5 kind of situation, promptly under the incompatible situation of the voice coding modes of both call sides, needing to be provided with TC (Trans-coder, codec unit) in the inner passage; BSC is when using the inner passage, conversation one side's that need will receive speech coding converts the voice coding modes of the opposing party's compatibility to by TC, promptly, the inner passage sends the interior TC of BSS earlier to for the side's that will converse user-plane voice, TC is converted to the coded system of the opposing party's compatibility with the user-plane voice of receiving, sends the opposing party of conversation again to.
When the 6th kind of situation occurring, can't use the local function of exchange of local call.
BSC2 sets up the inner passage in the following way:
BSC2 is, the 3rd call out and select voice coding modes, and to, second call out and the 3rd voice coding modes of calling out compares:
If, second call out and the 3rd voice coding modes of calling out compatible, then BSC2 set up directly, second call out and the 3rd user who calls out between transmission, second call out and the inner passage of the 3rd user-plane voice of calling out;
If second calling and the 3rd voice coding modes of calling out are incompatible, and comprise codec unit among the BSC2, then in the inner passage, be provided for the codec unit that the voice coding modes of the 3rd calling or second calling is changed.
405:BTS2 is to BSC2 Return Channel activation confirmation (Channel Activation Acknowledge is called for short Channel Activation ACK) message;
406:BSC2 sends switching request acknowledgement message to MSC;
407～417: identical with step 107～117;
In addition, BSC2 finish set up the inner passage after, receive the handover finding information of step 410 before, can judge for the 3rd according to second current state of calling out and call out and second call out the local call that constitutes and whether can use local the exchange.
Specifically, when second current state of calling out is: when switching, cannot use the local function of exchange of local call.
If the result of above-mentioned judgement is for cannot use local function of exchange, then BSC2 deletes the inner passage of having set up.
418: after receiving the handoff completion message of MS by the BTS2 transmission, BSC2 sends handoff completion message to MSC;
If the result of above-mentioned judgement is for using the calling of the local function of exchange of local call after switching, switching target BSC (BSC2) is after receiving the handoff completion message of MS by the BTS2 transmission, and dismounting first is called out and second calling is used for being connected of transmission user face voice at the A interface; Accordingly, MSC is when receiving the handoff completion message that BSC2 sends, and dismounting first is called out and second calling is used for being connected of transmission user face voice at the A interface.
In addition, in step 418, in order to make MSC after receiving handoff completion message, clearly know and use the inner passage whether, and then whether need to remove first call out and second MGW that calls out and BSC between be used for linking of transmission user name voice, therefore, BSC2 adds the local exchange of local call designator in the handoff completion message of its transmission.
Preferably, the local exchange of local call designator adopts form as shown in Figure 7.Wherein, the local exchange of local call designator takies 8 bits, uses the bit 1 of low level to indicate the local state that exchanges, and other bits can be reserved.Particularly, can use bit 1 to indicate after switching is finished, use the function of the local exchange of local call, referring to table 5:
| |
Used the local function of exchange of |
| Bit | |
| 1=0 | Do not use the local function of exchange of local call |
Table 5
That is to say, when bit 1 value is 1, represent that this calling used local function of exchange, when the value of bit 1 is 0, represent that this calling do not use local function of exchange.
419～420: identical with step 119～120.
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. the call handover method between a base station system is characterized in that this method comprises:
Moving exchanging center MSC if MSC supports local the exchange, then sends the handoff request message of carrying the call-information identifier to target BS C after first switching of calling out that receives source base station controller BSC transmission requires message;
After receiving described handoff request message, after target BS C called out the second party calling that constitutes local call according to described call-information identifier discovery and the 3rd, foundation was used for without the inner passage of described second calling of the transmission of core net and the 3rd user-plane voice of calling out;
After described first calling switches to target BS C, use described inner passage to transmit described second and call out and the 3rd user-plane voice of calling out.
2. the method for claim 1 is characterized in that, described call-information identifier is described second cic circuit identification code CIC or the call identifier Call ID that calls out.
3. the method for claim 1 is characterized in that, described call-information identifier is that MSC is the identical conversation identification number of described first calling and second call distribution.
4. as described each method of claim 1 to 3, it is characterized in that if MSC supports local exchange, when call setup, MSC distributes described call-information identifier for calling out participant.
5. the method for claim 1 is characterized in that,
Described target BS C sets up described inner passage in the following way:
Described target BS C is that voice coding modes is selected in described the 3rd calling, and described second calling and the 3rd voice coding modes of calling out are compared:
If described second calling and the 3rd voice coding modes of calling out are compatible, then described target BS C foundation is the described inner passage of described second calling of transmission and the 3rd user-plane voice of calling out between the user of described second calling and the 3rd calling directly;
If described second calling and the 3rd voice coding modes of calling out are incompatible, and comprise codec unit among the described target BS C, then in described inner passage, be provided for the codec unit that the voice coding modes of described the 3rd calling or second calling is changed.
6. the method for claim 1 is characterized in that,
After described target BS C sets up described inner passage, receive described handover finding information before, also judge whether that according to described second current state of calling out allowing to use described inner passage to transmit described second calls out and the 3rd user-plane voice of calling out, and only just uses described inner passage to transmit described second and calls out and the 3rd user-plane voice of calling out when judged result is permission.
7. method as claimed in claim 6 is characterized in that,
If described judged result is called out and the 3rd user-plane voice of calling out for allowing to use described inner passage to transmit described second, then described target BS C is behind the handoff completion message that receives described target BTS transmission, remove described first and call out and second call out and be used for being connected of transmission user face voice, and notify described MSC to remove described first and call out and second calling is used for being connected of transmission user face voice at the A interface at the A interface.
8. method as claimed in claim 7 is characterized in that,
Described BSC notifies described MSC to remove described first to call out and second calling is used for being connected of transmission user face voice at the A interface by comprise the local exchange of local call designator in handoff completion message;
Whether the local exchange of described local call designator is used to identify and has used described inner passage to carry out described second to call out and the transmission of the user-plane voice of the 3rd calling.
9. a mobile communication system comprises moving exchanging center MSC, source base station controller BSC and target BS C, it is characterized in that,
Described MSC is used for if MSC supports local the exchange, then sending the handoff request message of carrying the call-information identifier to described target BS C after first switching of calling out that receives described source BSC transmission requires message;
Described target BS C is used for after receiving described handoff request message, call out the second party calling of formation local call according to described call-information identifier discovery and the 3rd after, foundation is used for without the inner passage of described second calling of the transmission of core net and the 3rd user-plane voice of calling out, and after described first calling switches to target BS C, use described inner passage to transmit described second and call out and the 3rd user-plane voice of calling out.
10. system as claimed in claim 9 is characterized in that,
Described target BS C also is used for after setting up described inner passage, judge whether that according to described second current state of calling out allowing to use described inner passage to transmit described second calls out and the 3rd user-plane voice of calling out, and only just uses described inner passage to transmit described second and calls out and the 3rd user-plane voice of calling out when judged result is permission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110781.9A CN102045794B (en) | 2009-10-14 | 2009-10-14 | Call switching method between base station systems and mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110781.9A CN102045794B (en) | 2009-10-14 | 2009-10-14 | Call switching method between base station systems and mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102045794A true CN102045794A (en) | 2011-05-04 |
| CN102045794B CN102045794B (en) | 2014-12-31 |
Family
ID=43911435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910110781.9A Active CN102045794B (en) | 2009-10-14 | 2009-10-14 | Call switching method between base station systems and mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102045794B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103650627A (en) * | 2013-06-28 | 2014-03-19 | 华为技术有限公司 | Method, device and system for speech communication |
| CN103874129A (en) * | 2012-12-18 | 2014-06-18 | 中国电信股份有限公司 | Method and system for voice communication between different systems in all internet protocol network |
| CN103871415A (en) * | 2012-12-14 | 2014-06-18 | 中国电信股份有限公司 | Method for realizing inter-system voice communication, system and TFO conversion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376372A (en) * | 1999-09-29 | 2002-10-23 | 诺基亚公司 | Handover performed within a base station controller |
| CN101159905A (en) * | 2007-11-07 | 2008-04-09 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
| CN101322420A (en) * | 2005-12-05 | 2008-12-10 | 摩托罗拉公司 | System and method for performing handovers |
| CN101325795A (en) * | 2007-06-15 | 2008-12-17 | 中兴通讯股份有限公司 | Wireless communication device for local voice exchange |
| CN101541096A (en) * | 2008-03-18 | 2009-09-23 | ***通信集团公司 | A interface IP-based local exchange method and equipment thereof |
-
2009
- 2009-10-14 CN CN200910110781.9A patent/CN102045794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376372A (en) * | 1999-09-29 | 2002-10-23 | 诺基亚公司 | Handover performed within a base station controller |
| CN101322420A (en) * | 2005-12-05 | 2008-12-10 | 摩托罗拉公司 | System and method for performing handovers |
| CN101325795A (en) * | 2007-06-15 | 2008-12-17 | 中兴通讯股份有限公司 | Wireless communication device for local voice exchange |
| CN101159905A (en) * | 2007-11-07 | 2008-04-09 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
| CN101541096A (en) * | 2008-03-18 | 2009-09-23 | ***通信集团公司 | A interface IP-based local exchange method and equipment thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871415A (en) * | 2012-12-14 | 2014-06-18 | 中国电信股份有限公司 | Method for realizing inter-system voice communication, system and TFO conversion device |
| CN103871415B (en) * | 2012-12-14 | 2017-08-25 | 中国电信股份有限公司 | Realize the method, system and TFO conversion equipments of different systems voice intercommunication |
| CN103874129A (en) * | 2012-12-18 | 2014-06-18 | 中国电信股份有限公司 | Method and system for voice communication between different systems in all internet protocol network |
| CN103874129B (en) * | 2012-12-18 | 2017-09-12 | 中国电信股份有限公司 | The method and system of complete IP network different systems voice intercommunication |
| CN103650627A (en) * | 2013-06-28 | 2014-03-19 | 华为技术有限公司 | Method, device and system for speech communication |
| CN103650627B (en) * | 2013-06-28 | 2017-09-29 | 华为技术有限公司 | Voice communication method, apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102045794B (en) | 2014-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101400153A (en) | Method for direct communication by user equipment through HNB access system | |
| CN103052038A (en) | Method and system for building group calling context, base station and cluster EPC (electronic product code) | |
| CN101355785B (en) | Method and system for transmitting non-access layer information during switching procedure | |
| WO2005086505A9 (en) | Method and system for management of handover only trunk line between mobile switching centers for handover in mixed mobile communication system of an asynchronous network and a synchronous network | |
| CN103974205A (en) | Cluster business control method, network-side equipment and user equipment | |
| CN101431783A (en) | Method for implementing switching and switching equipment thereof | |
| KR101221235B1 (en) | Efficient sharing of mobile equipment identifiers | |
| CN103582122A (en) | Group call establishment method based on digital trunked communication system, network side equipment | |
| CN102045794B (en) | Call switching method between base station systems and mobile communication system | |
| CN102395110A (en) | Method for supporting MBMS service transmission in LTE system | |
| CN100456885C (en) | Method and system for establishing dialed user connection | |
| CN102098654B (en) | Method, device and system for controlling local switch | |
| CN101577948A (en) | Method for switching A-port user interface based on IP carrier | |
| CN101835220B (en) | Call handover method between base station systems and mobile communication system | |
| CN101835218A (en) | Method for establishing local exchange of local conversations in call establishing process | |
| CN101835219A (en) | Call handover method in base station system and mobile communication system | |
| CN101860926B (en) | Method and system for establishing call in switch-in process | |
| CN101379843B (en) | Method and system for management of handover only trunk line between mobile switching centers for handover in mixed mobile communication system of an asynchronous network and a synchronous network | |
| CN101557565B (en) | Switching method of terminal between reverse traffic channels and trunking communication system | |
| CN101801046A (en) | Method for establishing local exchange, core network equipment and base station subsystem | |
| CN101137203A (en) | Method to establish user plane | |
| CN102045704A (en) | Method and system for establishing local exchange for local call in call establishing process | |
| CN103096501B (en) | Based on the calling system of femto base station system architecture, method and device | |
| CN101801053B (en) | Method for removing local exchange, core network equipment and base station subsystem | |
| KR100589953B1 (en) | Hand Over Method from Asynchronous Mobile Communication Network to Synchronous Mobile Communication Network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |