CN101547523A - Call indicating method, voice call continuity user equipment and system - Google Patents
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- 238000005259 measurement Methods 0.000 abstract description 8
- 238000004873 anchoring Methods 0.000 abstract 2
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Abstract
The invention discloses a call indicating method, voice call continuity user equipment and a corresponding system. The voice call continuity user equipment initiates to establish a voice call; and if an access network node corresponding to the voice call is a boundary access network node, the anchoring conditions of the voice call of the boundary access network node are indicated, so that the access network can better perform measurement control according to the anchoring conditions of the call, and trigger the domain conversion correctly.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of call indicating method, voice call continuity user equipment and system.
Background technology
Second generation mobile communication technology (2nd Generation, 2G) or 3G (Third Generation) Moblie technology (3rdGeneration, 3G) network, for example, global system for mobile communications (Global System for MobileCommunication, GSM) or Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division MultipleAccess, WCDMA) network can form a kind of comprehensive covering through for many years deployment.Along with development of internet technology, some only provide packet-switched domain (Packet Switching, PS) pure PS territory network-covered is to some cities and traffic hot zones, for example, System Architecture Evolution (System ArchitectureEvolution, SAE)/Long Term Evolution (Long TermEvolution, LTE), high-speed packet inserts (HighSpeed Packet Access, HSPA), high-speed packet insert evolution (HighSpeed Packet AccessEvolution, HSPA+) or micro-wave access to global intercommunication (Wbrldwide Interoperability forMicrowave Access, WiMAX) network.Thereby in present communication network, these pure PS territory networks and 2G or 3G network are also deposited.
Different networks has different carrying mechanisms, at different network carrying mechanism, the audio call of mobile communication can be divided into two classes: the first kind is circuit domain (Circuit Service, CS) Cheng Zai session service, for example voice call; Second class is the session service of PS territory carrying, be also referred to as internet protocal carried voice technology (Voice over Internet Protocol, VoIP) class business, by IP multimedia service subsystem (IP Multimedia Subsystem, IMS) provide quality of service (Quality of Service, OoS) guarantee, for example the voice call of IP carrying.
For pure PS territory network, audio call generally can only transmit in its PS territory carrying, and IMS controls audio call by IP-based network.And in 2G or 3G network, audio call generally is carried on the CS territory.
The user who makes a call is in the call process, can cross over the network of two different bearer mechanism, because the difference of load-bearing of mobile telecommunication business mechanism, for example, (User Equipment UE) moves out the scope that the base station covered of SAE/LTE network, and when entering the area of coverage of base station of 2G or 3G network when subscriber equipment, the interruption of audio call may occur, thereby influence the continuity that user speech is called out.
In order to address the above problem, guarantee the continuity that user speech is called out, generally adopt single Radio Link voice continuity (Single Radio Voice Call Continuity, technical scheme SRVCC) carry out the territory conversion (Domain Transfer, DT).In this technical scheme, be deployed with IMS network and voice continuity application server (Voice Call Continuity Application Server, VCC AS) usually; Network itself is supported PS switching and double-transmission mode, and (Dual Transfer Mode, DTM) characteristic perhaps are deployed with the gateway node that a responsible PS and CS signaling are changed; Subscriber equipment is supported the VCC function, is VCCUE, and Subscriber Identity Module (Subscriber Identity Module, SIM) signatory with regard to the VCC function.When VCC UE initiates a VCC calling, this calling will be anchored (Anchored) on VCC AS usually, can trigger the territory conversion according to factors such as measurement or loads so that move the back network at UE.
For example, UE makes a call in LTE, carries out voice call by VoIP.When UE moves and leave the coverage of LTE sub-district, UE will measure adjacent GSM EDGE Radio Access Network (GSM/EDGE Radio Access Network, GERAN) sub-district, and reporting measurement result.(Evolved NodeB, eNodeB) according to this measurement result, (Base Station Controller BSC) initiates handoff request to source Access Network LTE evolution base station to target GERAN base station controller by core net.Target GERAN BSC agrees this handoff procedure, and whether decision carries out the territory conversion of PS to CS.But in this process, Access Network can not judge whether a calling is that VCC calls out, i.e. whether this calling is anchored into VCC AS.Because network side is not that grappling is all carried out in the calling that any VCC UE initiates, though and Access Network can know the ability information of UE, can't know user's CAMEL-Subscription-Information.When a calling is not anchored, even Access Network decision carrying out territory conversion also can make mistakes in the subsequent process.
In order to make Access Network can learn whether this calling is anchored, whether core net can indicate this calling of access network node to be anchored by signaling when per call is set up.When switching in the UE generation systems, for example, when the LTE sub-district switches to the LTE sub-district, perhaps from the GERAN sub-district during to the GERAN sub-district, need the source Access Network will call out the information that whether is anchored and send to target access network, so that when carrying out the switching of interdepartmental system between LTE-GERAN, Access Network can correctly locate to trigger the territory conversion.But UE moves and triggering system in the handoff procedure, even the source Access Network is supported VCC Indicator, support VCC Indicator if target access network is upgraded, then this information still can be dropped.Therefore target access network can't know still whether this calling is anchored.
Summary of the invention
The embodiment of the invention provides a kind of call indicating method, voice call continuity user equipment and system, to realize better measuring control, correct triggering territory conversion.
On the one hand, the embodiment of the invention provides a kind of call indicating method, comprising:
Voice call continuity user equipment VCC UE initiates to set up audio call;
If the Access Network node of described audio call correspondence is a border Access Network node, then indicate the grappling situation of the described audio call of this border Access Network node.
On the other hand, the embodiment of the invention also provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Core net when the Access Network node that is used for the audio call correspondence initiated as described VCC UE is border Access Network node, is directly indicated the grappling situation of the described audio call of this border Access Network node.
On the other hand, the embodiment of the invention also provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE, described VCC UE comprises call setup unit and indicating member; Described call setup unit is used for initiating to set up audio call; Described indicating member is used for when the Access Network node of described audio call correspondence is border Access Network node, according to the grappling situation of the described audio call of core net indication, indicates the grappling situation of the described audio call of this border Access Network node;
Core net is used to indicate the grappling situation of the described audio call of described VCC UE.
On the other hand, the embodiment of the invention also provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Border Access Network node is used for inquiring about to core net the grappling situation of described audio call;
Core net is used to respond the query requests of this border Access Network node, indicates the grappling situation of the described audio call of this border Access Network node.
On the one hand, the embodiment of the invention also provides a kind of voice call continuity user equipment, comprising again:
The call setup unit is used for initiating to set up audio call;
Indicating member is used for when the Access Network node of described audio call correspondence is border Access Network node, according to the grappling situation of the described audio call of core net indication, indicates the grappling situation of the described audio call of this border Access Network node.
Technical scheme by the embodiment of the invention after the grappling situation that Access Network is determined to call out, can better be measured control as can be seen; Simultaneously, after the grappling situation that Access Network is determined to call out, can the calling that not be anchored not triggered the territory conversion, avoid follow-up failure procedures.
Description of drawings
Fig. 1 is the method flow diagram of the embodiment of the invention 1;
Fig. 2 is the method flow diagram of the embodiment of the invention 2;
Fig. 3 is the method flow diagram of the embodiment of the invention 3.
Embodiment
The embodiment of the invention can but be not limited to be applicable to various communication systems, for example, go for 2G or 3G network, for example, GSM or WCDMA also go for systems such as SAE, LTE, HSPA, HSPA+ or Wimax.
Defined border Access Network node in the embodiment of the invention.If exist at least one can trigger the sub-district of territory conversion in the sub-district that the Access Network node is had jurisdiction over, then this Access Network node is a border Access Network node.For example, base station controller in base station in the LTE system or the GERAN system (Base Station Controller, BSC), if comprise different system cell in the Neighboring Cell List of at least one sub-district in this base station or the BSC jurisdiction district, perhaps, exist at least one to be indicated as the border cell that can trigger the territory conversion in this base station or the BSC jurisdiction district.The method of sub-district indication includes but not limited to: can increase an indication in the system message of broadcasting, being used to identify this sub-district is border cell; Perhaps can increase an indication at dedicated signaling, being used to indicate the current Serving cell of UE is border cell.
Below in conjunction with accompanying drawing the embodiment of the invention is made and to specify.
Embodiment 1
As shown in Figure 1, a kind of call indicating method comprises:
11) VCC UE initiates to set up audio call.
12) core net judges whether the corresponding Access Network node of this calling is border Access Network node.If corresponding Access Network node is a border Access Network node, then calling indication message is sent to this border Access Network node.
Wherein, core net judges whether the corresponding Access Network node of this calling is border Access Network node, can but do not limit the following mode that adopts: judge by pre-configured information these information can determine whether an access network node is border Access Network node to core net; Perhaps, it is border Access Network node for an Access Network node indication core net, when adopting this mode, it is border Access Network node if the Access Network node is not indicated core net, then core net thinks that this Access Network node is not a border Access Network node, because Sheng Ji Access Network node may not supported this function, thereby also just can not send this notification message, core net just can determine that it is not a border Access Network node; Perhaps, whether core net is sent out information query Access Network node is border Access Network node, judge according to the information that the Access Network node is replied whether it is border Access Network node, if not response (can repeatedly inquire about), then core net thinks that the node of being inquired about is not a border Access Network node.
Wherein, whether calling indication message can indicate whether this border this calling of Access Network node is that VCC calls out, promptly should call out by VCC AS grappling.Calling indication message can send to border Access Network node by signaling, also can adopt alternate manner to be delivered to border Access Network node, perhaps can adopt other any mode that makes border Access Network node know this call anchor stable condition, the present invention does not limit yet.
Calling indication message can be VCC indication (VCC Indicator), and the value of VCC Indicator for example can be " being anchored " (" VCC Anchored ") or " not being anchored " (" VCC Un-Anchored "); Calling indication message can be the indication information of other form also, and the embodiment of the invention does not limit.Reaching subsequent embodiment below is the example explanation with VCC Indicator, no longer the indication information of other form is set forth one by one.
If VCC AS grappling this calling, then core net sends to this border Access Network node value and is the VCC Indicator of " being anchored ", indicates this calling to be anchored or this is called out to VCC and calls out; If not this calling of grappling of VCC AS, then core net sends to this border Access Network node value and is the VCC Indicator of " not being anchored ", indicates this callings not to be anchored or this calling is not the VCC calling; Certainly, it is optional for this step of VCC Indicator of " not being anchored " that core net sends to this border Access Network node value, also can set when border Access Network node is not received VCC Indicator, represent that promptly this calling is not anchored or this calling is not that VCC calls out.
The function of the core net of being mentioned in the present embodiment, can carry out by VCC AS, also can carry out by other core network entity, also can carry out by a newly-installed core network entity, can be carried out by logic module or functional module in the core network entity, the present invention does not limit yet.
After border Access Network node obtains the information that this calling has been anchored, then can control UE and carry out different system (Inter-RAT) and measure, receive the measurement report of UE after, can determine to initiate the territory conversion; After border Access Network node obtains the information that this calling is not anchored, can forbid triggering the territory conversion, avoid follow-up failure procedures.
Embodiment 2
As shown in Figure 2, a kind of call indicating method comprises:
21) VCC UE initiates to set up audio call.
22) core net sends to this VCC UE with VCC Indlcator.
If VCC AS grappling this calling, then core net sends to this VCC UE with value for the VCCIndicator of " being anchored "; If not this calling of grappling of VCC AS, then core net sends to this VCC UE with value for the VCC Indicator of " not being anchored "; Certainly, also can set when UE does not receive the VCC Indicator of core net transmission, represent that promptly this calling is not anchored or this calling is not that VCC calls out.
The function of the core net of being mentioned in the present embodiment, can carry out by VCC AS, also can carry out, also can carry out by a newly-installed core network entity by other core network entity, can be carried out by the logic function module in the core network entity, the present invention does not limit yet.
23) UE judges whether corresponding Access Network node is border Access Network node, if border Access Network node then sends VCC Indicator to this border Access Network node.
UE judges that whether corresponding Access Network node is that core net judges that whether the Access Network node is that the scheme of border Access Network node is similar substantially, repeats no more herein among the scheme of border Access Network node and the embodiment 1.
If VCC AS grappling this calling, then UE sends value and gives this border Access Network node for the VCCIndicator of " being anchored "; If not this calling of grappling of VCC AS, then UE transmission value is given this border Access Network node for the VCC Indicator of " not being anchored "; Certainly, also can set when border Access Network node is not received the VCC Indicator of UE transmission, represent that promptly this calling is not anchored or this calling is not that VCC calls out.
After border Access Network node obtains the information that this calling has been anchored, then can control UE and carry out different system (Inter-RAT) and measure, receive the measurement report of UE after, can determine to initiate the territory conversion; After border Access Network node obtains the information that this calling is not anchored, can forbid triggering the territory conversion, avoid follow-up failure procedures.
Embodiment 3
As shown in Figure 3, a kind of call indicating method comprises:
31) VCC UE initiates to set up audio call.
32) if the corresponding Access Network node of this callings is a border Access Network node, then whether be whether VCC calling or this calling be anchored to this border Access Network node if inquiring about this calling to core net.The present invention does not limit the concrete mode of inquiry, so long as can realize the mode of the purpose of inquiry, and all within protection scope of the present invention.
33) core net feeds back to this border Access Network node with VCC Indicator.
If VCC AS grappling this calling, the query requests of core net response border Access Network node then sends value and gives this border Access Network node for the VCC Indicator of " being anchored "; If not this calling of grappling of VCC AS, then core net responds the query requests of border Access Network node, and the transmission value is given this border Access Network node for the VCC Indicator of " not being anchored "; Certainly, also can set when border Access Network node is not received the VCC Indicator of core net feedback, represent that promptly this calling is not anchored or this calling is not that VCC calls out.
After border Access Network node obtains the information that this calling has been anchored, then can control UE and carry out different system (Inter-RAT) and measure, receive the measurement report of UE after, can determine to initiate the territory conversion; After border Access Network node obtains the information that this calling is not anchored, can forbid triggering the territory conversion, avoid follow-up failure procedures.
Description by above embodiment, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that the technical scheme of the embodiment of the invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Embodiment 4
Present embodiment provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Core net when the Access Network node that is used for the audio call correspondence initiated as described VCC UE is border Access Network node, is directly indicated the grappling situation of the described audio call of this border Access Network node.
Embodiment 5
Present embodiment provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE, described VCC UE comprises call setup unit and indicating member; Described call setup unit is used for initiating to set up audio call; Described indicating member is used for when the Access Network node of described audio call correspondence is border Access Network node, according to the grappling situation of the described audio call of core net indication, indicates the grappling situation of the described audio call of this border Access Network node;
Core net is used to indicate the grappling situation of the described audio call of described VCC UE.
Embodiment 6
Present embodiment provides a kind of calling system, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Border Access Network node is used for inquiring about to core net the grappling situation of described audio call;
Core net is used to respond the query requests of this border Access Network node, indicates the grappling situation of the described audio call of this border Access Network node.
Embodiment 4,5 and 6 systems of describing and the specific implementation and the process of device, basic identical with the description among the embodiment 1 to 3, repeat no more herein.
From the technical scheme of various embodiments of the present invention as can be seen, obtain the grappling situation of calling when border Access Network node after, then can better control UE and carry out different system (Inter-RAT) and measure, for example,, can not measure for the calling that is not anchored; Behind the measurement report of receiving UE, can determine to initiate territory conversion, for the calling that is not anchored, report even have to measure, also can forbid triggering the territory conversion, avoiding follow-up failure procedures, thus can be correct carry out the territory conversion; In addition, only obtain the grappling situation of calling, can reduce the Signalling exchange amount by border Access Network node; When the whole network fails to upgrade, also can when intra-system handover, avoid taking place not support that the target access network of VCC Indicator abandons the situation of grappling information.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1, a kind of call indicating method is characterized in that, comprising:
Voice call continuity user equipment VCC UE initiates to set up audio call;
If the Access Network node of described audio call correspondence is a border Access Network node, then indicate the grappling situation of the described audio call of this border Access Network node.
2, the method for claim 1 is characterized in that, and is described if the Access Network node of audio call correspondence is a border Access Network node, then indicates the grappling situation of the described audio call of this border Access Network node specifically to comprise:
If the Access Network node of described audio call correspondence is a border Access Network node, then core net is directly indicated the grappling situation of the described audio call of this border Access Network node.
3, the method for claim 1 is characterized in that, and is described if the Access Network node of audio call correspondence is a border Access Network node, then indicates the grappling situation of the described audio call of this border Access Network node specifically to comprise:
Core net is indicated the grappling situation of the described audio call of described VCC UE; If the Access Network node of described audio call correspondence is a border Access Network node, then described VCC UE indicates the grappling situation of the described audio call of this border Access Network node.
4, the method for claim 1 is characterized in that, and is described if the Access Network node of audio call correspondence is a border Access Network node, then indicates the grappling situation of the described audio call of this border Access Network node specifically to comprise:
If the Access Network node of described audio call correspondence is a border Access Network node, then core net responds the query requests of this border Access Network node, indicates the grappling situation of the described audio call of this border Access Network node.
5, as claim 2,3 or 4 described methods, it is characterized in that described core net comprises application server for continuity of voice call.
As each described method in the claim 1 to 4, it is characterized in that 6, the grappling situation of described indication audio call specifically comprises:
If described audio call is anchored, then send the calling indication message of the grappling situation of the described audio call of indication;
If described audio call is not anchored, then send the calling indication message of the grappling situation of the described audio call of indication, perhaps, indicate this calling not to be anchored by not sending described calling indication message.
7, method as claimed in claim 6 is characterized in that, described transmission calling indication message specifically comprises:
Send continuous voice call indication VCC Idicator, and when described calling is anchored, send the VCC Idicator of value for " being anchored "; When described calling is not anchored, send the VCC Idicator of value for " not being anchored ".
8, a kind of calling system is characterized in that, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Core net when the Access Network node that is used for the audio call correspondence initiated as described VCC UE is border Access Network node, is directly indicated the grappling situation of the described audio call of this border Access Network node.
9, system as claimed in claim 8 is characterized in that, the grappling situation of described indication audio call specifically comprises:
If described audio call is anchored, then send the calling indication message of the grappling situation of the described audio call of indication;
If described audio call is not anchored, then send the calling indication message of the grappling situation of the described audio call of indication, perhaps, indicate this calling not to be anchored by not sending described calling indication message.
10, a kind of calling system is characterized in that, comprising:
Voice call continuity user equipment VCC UE, described VCC UE comprises call setup unit and indicating member; Described call setup unit is used for initiating to set up audio call; Described indicating member is used for when the Access Network node of described audio call correspondence is border Access Network node, according to the grappling situation of the described audio call of core net indication, indicates the grappling situation of the described audio call of this border Access Network node;
Core net is used to indicate the grappling situation of the described audio call of described VCC UE.
11, system as claimed in claim 10 is characterized in that, the grappling situation of described indication audio call specifically comprises:
If described audio call is anchored, then send the calling indication message of the grappling situation of the described audio call of indication;
If described audio call is not anchored, then send the calling indication message of the grappling situation of the described audio call of indication, perhaps, indicate this calling not to be anchored by not sending described calling indication message.
12, a kind of calling system is characterized in that, comprising:
Voice call continuity user equipment VCC UE is used for initiating to set up audio call;
Border Access Network node is used for inquiring about to core net the grappling situation of described audio call;
Core net is used to respond the query requests of this border Access Network node, indicates the grappling situation of the described audio call of this border Access Network node.
13, system as claimed in claim 12 is characterized in that, the grappling situation of described indication audio call specifically comprises:
If described audio call is anchored, then send the calling indication message of the grappling situation of the described audio call of indication;
If described audio call is not anchored, then send the calling indication message of the grappling situation of the described audio call of indication, perhaps, indicate this calling not to be anchored by not sending described calling indication message.
14, a kind of voice call continuity user equipment is characterized in that, comprising:
The call setup unit is used for initiating to set up audio call;
Indicating member is used for when the Access Network node of described audio call correspondence is border Access Network node, according to the grappling situation of the described audio call of core net indication, indicates the grappling situation of the described audio call of this border Access Network node.
15, voice call continuity user equipment as claimed in claim 14 is characterized in that, the grappling situation of described indication audio call specifically comprises:
If described audio call is anchored, then send the calling indication message of the grappling situation of the described audio call of indication;
If described audio call is not anchored, then send the calling indication message of the grappling situation of the described audio call of indication, perhaps, indicate this calling not to be anchored by not sending described calling indication message.
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| CN 200810066219 CN101547523B (en) | 2008-03-29 | 2008-03-29 | Call indicating method, voice call continuity user equipment and system |
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| CN 200810066219 CN101547523B (en) | 2008-03-29 | 2008-03-29 | Call indicating method, voice call continuity user equipment and system |
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| CN104871594A (en) * | 2012-12-21 | 2015-08-26 | 高通股份有限公司 | Systems and methods for reduced latency circuit switched fallback |
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| CN100583843C (en) * | 2005-08-08 | 2010-01-20 | 华为技术有限公司 | Control method and system of session route path |
| CN100493255C (en) * | 2006-02-07 | 2009-05-27 | 华为技术有限公司 | A system and method for realizing the call service based on voice service continuity |
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