CN101547523B - Call indicating method, voice call continuity user equipment and system - Google Patents
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- CN101547523B CN101547523B CN 200810066219 CN200810066219A CN101547523B CN 101547523 B CN101547523 B CN 101547523B CN 200810066219 CN200810066219 CN 200810066219 CN 200810066219 A CN200810066219 A CN 200810066219A CN 101547523 B CN101547523 B CN 101547523B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
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- 238000005259 measurement Methods 0.000 abstract description 9
- 238000004873 anchoring Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 230000011664 signaling Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
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- 238000004891 communication Methods 0.000 description 3
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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
Generation Mobile Telecommunication System 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.Development along with network technology, some only provide packet-switched domain (Packet Switching, PS) pure PS territory network-covered is to some cities and traffic hot spot area, for example, System Architecture Evolution (System ArchitectureEvolution, SAE)/Long Term Evolution (Long Term Evolution, LTE), high-speed packet access (HighSpeed Packet Access, HSPA), high-speed packet access evolution (High Speed Packet AccessEvolution, HSPA+) or micro-wave access to global intercommunication (Worldwide 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, and the network carrying mechanism for different can be divided into the audio call of mobile communication two classes: the first kind is the session service of circuit domain (Circuit Service, CS) carrying, for example voice call; Equations of The Second Kind is the session service of PS territory carrying, be also referred to as internet protocal carried voice technology (Voice over Internet Protocol, VoIP) class is professional, 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 be in its PS territory carrying transmission, 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, when subscriber equipment (User Equipment, UE) moves out the scope that the base station of SAE/LTE network covers, and when entering the area of coverage of base station of 2G or 3G network, the interruption of audio call may occur, thereby affect the continuity that user speech is called out.
In order to address the above problem, guarantee the continuity that user speech is called out, the general technical scheme of single Radio Link voice continuity (Single Radio Voice Call Continuity, SRVCC) that adopts is carried out territory conversion (Domain Transfer, DT).In this technical scheme, usually be deployed with IMS network and voice continuity application server (Voice Call Continuity Application Server, VCC AS); Network itself supports PS to switch and double-transmission mode (Dual Transfer Mode, DTM) characteristic, perhaps is deployed with the gateway node of a responsible PS and CS signaling conversion; Subscriber equipment is supported the VCC function, is VCCUE, and Subscriber Identity Module (Subscriber Identity Module, SIM) is signatory with regard to the VCC function.When VCC UE initiates a VCC calling, this calling will be anchored (Anchored) on VCC AS usually, so that network can trigger the territory conversion according to factors such as measurement or loads after UE moves.
For example, UE makes a call in LTE, carries out voice call by VoIP.When UE moves and leave the coverage of LTE residential quarter, UE will measure adjacent GSM EDGE Radio Access Network (GSM/EDGE Radio Access Network, GERAN) residential quarter, and the reporting measurement result.Source Access Network LTE evolution base station (Evolved NodeB, eNodeB) is initiated handover request by core net to target GERAN base station controller (Base Station Controller, BSC) according to this measurement result.Target GERAN BSC agrees this handoff procedure, and determines whether to carry out PS to the territory conversion of 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, although 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 determines to carry out the 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 switching to the LTE residential quarter from the LTE residential quarter, during perhaps from the GERAN residential quarter to the GERAN residential quarter, 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 cross-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 that described audio call is corresponding is border Access Network node, then indicate the grappling situation of the described audio call of this border Access Network node, exist at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border.
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, be used for when the Access Network node corresponding to audio call of described VCC UE initiation is border Access Network node, directly the grappling situation of the described audio call of this border Access Network node of indication exists at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border.
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 Access Network node corresponding to described audio call is border Access Network node, grappling situation according to the described audio call of core net indication, indicate the grappling situation of the described audio call of this border Access Network node, exist at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border; 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 for the grappling situation of inquiring about described audio call to core net, exists at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border; Core net for the query requests of this border Access Network node of response, is indicated 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, be used for when Access Network node corresponding to described audio call is border Access Network node, grappling situation according to the described audio call of core net indication, indicate the grappling situation of the described audio call of this border Access Network node, exist at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border.
Technical scheme by the embodiment of the invention can be found out, after the grappling situation that Access Network is determined to call out, can better measure control; 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 the 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 residential quarter of territory conversion in the residential quarter of Access Network node jurisdiction, then this Access Network node is 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 residential quarter 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 residential quarter indication includes but not limited to: can increase an indication in the system message of broadcasting, being used for this residential quarter of sign 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 is judged whether border Access Network node of Access Network node corresponding to this calling.If corresponding Access Network node is border Access Network node, then calling indication message is sent to this border Access Network node.
Wherein, core net is judged whether border Access Network node of Access Network node corresponding to this calling, can but do not limit the following mode that adopts: judge that by pre-configured information to core net these information can be determined whether border Access Network node of an access network node; Perhaps, it is border Access Network node for 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 border Access Network node, because the Access Network node of upgrading may not supported this function, thereby also just can not send this notification message, core net just can determine that it is not border Access Network node; Perhaps, core net is sent out whether border Access Network node of information query Access Network node, the information of replying according to the Access Network node is judged its whether border Access Network node, if not response (can repeatedly inquire about), then core net thinks that the node of inquiring about is not border Access Network node.
Wherein, whether calling indication message can be indicated this border Access Network node, and this calls out whether VCC calls out, namely 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 anchoring situation, 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.The below and subsequent embodiment illustrate as an example of VCC Indicator example, no longer the indication information of other form are 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 as 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 namely this calling is not anchored or this calling is not that VCC calls out.
The function of the core net of mentioning in the present embodiment, can be carried out by VCC AS, also can be carried out by other core network entity, also can be carried 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 Indicator.
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 namely this calling is not anchored or this calling is not that VCC calls out.
The function of the core net of mentioning in the present embodiment, can be carried out by VCC AS, also can be carried out by other core network entity, also can be carried out by a newly-installed 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 substantially similar, repeats no more herein among the scheme of border Access Network node and the embodiment 1.
If VCC AS grappling this calling, then UE send value for the VCCIndicator of " being anchored " to this border Access Network node; 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 namely 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 Access Network node corresponding to this calling is border Access Network node, then this border Access Network node to core net inquire about this calling whether VCC call out or whether this calling is anchored.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, send value for the VCC Indicator of " being anchored " to this border Access Network node; 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 namely 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 by hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the technical scheme of the embodiment of the invention is to can embodying with the form of software product in whole or in part that background technology contributes, this computer software product can be stored in the storage medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be 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 is used for directly indicating the grappling situation of the described audio call of this border Access Network node when the Access Network node corresponding to audio call of described VCC UE initiation is 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 Access Network node corresponding to described audio call is border Access Network node, and the grappling situation of the described audio call of indicating according to core net is indicated 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 the grappling situation of inquiring about described audio call to core net;
Core net for the query requests of this border Access Network node of response, is indicated the grappling situation of the described audio call of this border Access Network node.
Embodiment 4,5 and 6 systems of describing and specific implementation and the process of device, basic identical with the description among the embodiment 1 to 3, repeat no more herein.
Can find out from the technical scheme of various embodiments of the present invention, obtain the grappling situation of calling when border Access Network node after, then can better control UE and carry out different system (Inter-RAT) measurement, for example, for the calling that is not anchored, can not measure; 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 obtained the grappling situation of calling by border Access Network node, can reduce the Signalling exchange amount; When the whole network fails to upgrade, also can when intra-system handover, avoid occuring 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 (8)
1. a call indicating method is characterized in that, comprising:
Voice call continuity user equipment VCC UE initiates to set up audio call;
Described VCC UE receives the grappling situation of the described audio call of core net transmission;
Described VCC UE judges whether access network node corresponding to described audio call is the border access network node;
If the access network node that described audio call is corresponding is the border access network node, described VCC UE indicates the grappling situation of described audio call to this border access network node, exists at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border.
2. the method for claim 1 is characterized in that, described core net comprises application server for continuity of voice call.
3. method as claimed in claim 1 or 2 is characterized in that, indicates the grappling situation of described audio call specifically to comprise:
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.
4. method as claimed in claim 3 is characterized in that, described transmission calling indication message specifically comprises:
Send continuous voice call indication VCC Idicator, and when described calling is anchored, sends value and be the VCC Idicator of " being anchored "; When described calling is not anchored, sends value and be the VCC Idicator of " not being anchored ".
5. a 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 judging whether access network node corresponding to described audio call is the border access network node, when access network node corresponding to described audio call is the border access network node, grappling situation according to the described audio call of core net indication, indicate the grappling situation of described audio call to this border access network node, exist at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border;
Core net is used to indicate the grappling situation of the described audio call of described VCC UE.
6. system as claimed in claim 5 is characterized in that, indicates the grappling situation of described audio call specifically to comprise:
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. a 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, be used for judging whether access network node corresponding to described audio call is the border access network node, when access network node corresponding to described audio call is the border access network node, grappling situation according to the described audio call of core net indication, indicate the grappling situation of described audio call to this border access network node, exist at least one can trigger the residential quarter of territory conversion in the access network node jurisdiction district, described border.
8. voice call continuity user equipment as claimed in claim 7 is characterized in that, indicates the grappling situation of described audio call specifically to comprise:
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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| CN1913503A (en) * | 2005-08-08 | 2007-02-14 | 华为技术有限公司 | Control method and system of session route path |
| CN101018400A (en) * | 2006-02-07 | 2007-08-15 | 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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| CN1913503A (en) * | 2005-08-08 | 2007-02-14 | 华为技术有限公司 | Control method and system of session route path |
| CN101018400A (en) * | 2006-02-07 | 2007-08-15 | 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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