CN108541031A - Business switch method, apparatus and system - Google Patents
Business switch method, apparatus and system Download PDFInfo
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- CN108541031A CN108541031A CN201710123697.5A CN201710123697A CN108541031A CN 108541031 A CN108541031 A CN 108541031A CN 201710123697 A CN201710123697 A CN 201710123697A CN 108541031 A CN108541031 A CN 108541031A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1096—Supplementary features, e.g. call forwarding or call holding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- Computer Networks & Wireless Communication (AREA)
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- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
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Abstract
This application involves a kind of business switch method, apparatus and system, method includes：It is that business establishes the first request message carried that the control plane network element of source network, which receives CSCF network elements and sends,；Receive the second request message that UE is switched to target network from source network；According to the second request message, third request message is sent to the control plane network element of target network, the control plane network element of target network is that UE distributes the second IP address, and the network information, the IP address type of the second IP address are identical with the network information of the first IP address, IP address type respectively；The control plane network element of source network sends the 4th request message to UE, and the 4th request message includes the second IP address, and the second IP address is used to indicate UE and switches to the second IP address.Control plane network element by target network is that UE distributes the second IP address identical with the network information of the first IP address and IP address type, avoids the process that renegotiates of media across a network, and realization is switched fast the exigent business of time delay.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of business switch method, apparatus and systems.
Background technology
In long term evolution (Long Term Evolution, LTE) system, in packet switch (Packet Switch, PS)-PS
In the process, the address procotol (Internet Protocol, IP) is anchored to by user equipment (User Equipment, UE)
Bag data net gateway (PDN Gateway, PGW) 1.When UE is switched to target network from source network, as shown in FIG. 1, FIG. 1 is existing
There are the schematic diagram that UE switches between source network and target network in technology, the mobile management entity (Mobility of target network
Management Entity, MME) gateways (Serving Gate Way, SGW) 2 of 2 control targe networks is connected to source
The PGW1 of network so that the IP address of UE remains unchanged, while application function (Application Function, AF) is in signaling
Less than UE internetwork switching occurs for level perception.Heavy line in Fig. 1 is the user plane path before UE switchings, and thick dashed line is to cut
User plane path after changing.
Since UE is in movement, but UE needs the PGW 1, Fig. 1 by source network after source network is switched to target network
In heavy line be UE switching before user plane path, thick dashed line be switch after user plane path, cause UE to user level
Path may not be optimal, time delay is longer, cannot be satisfied the business demand very high to time delay, is especially moved in following 5th generation
In dynamic communication system (i.e. 5G systems), since the requirement to time delay is tightened up, cannot more meet very high to delay requirement
Business demand.
Invention content
In view of the above technical problems, the present invention proposes a kind of business switch method, realizes to the exigent industry of time delay
Business is switched fast.
In a first aspect, a kind of business switch method is provided, including：The control plane network element of source network receives CSCF network elements hair
It is that business establishes the first request message carried to send, and first request message includes：The IP of carrying is not anchored switching instruction；
What the access network equipment of the control plane network element reception source network of source network was sent is used to UE being switched to target network from source network
The second request message；According to second request message, the control plane of the control plane network element of the source network to target network
Network element sends third request message, and the third request message includes：IP is not anchored switching instruction, the network of the first IP address is believed
The IP address type of breath and first IP address；It is not anchored switching instruction, the control of the target network according to the IP
Veil member is that the UE distributes the second IP address, wherein the network information of second IP address and first IP address
The network information is identical, and the IP address type of second IP address is identical with the IP address type of first IP address；Target
Network-based control veil member sends response message to the control plane network element of the source network, and the response message is including the 2nd IP
Location；The control plane network element of source network sends the 4th request message to the UE, and the 4th request message includes the second IP address,
Second IP address is used to indicate the UE and switches to the second IP address from the first IP address.It is not anchored and is cut according to IP as a result,
Instruction is changed, UE, need not be after the user plane network element of source network in network switching, then is switched to target network, due to target
Network-based control veil member is that the network information of the second IP address of UE distribution is identical with the network information of the first IP address, second
The IP address type of IP address is identical with the IP address type of the first IP address, therefore avoids renegotiating for media across a network
Process, realization are switched fast the exigent business of time delay.
In one possible implementation, first request message further includes：IP change detections event and CSCF nets
The session id of member；It is described after the control plane network element of source network receives the response message of control plane network element transmission of target network
Method further includes：According to the IP change detections event, the control plane network element of the source network is sent to the CSCF network elements to be led to
Know, the notice includes session id, the first IP address and the second IP address of the CSCF network elements, and the notice is used to indicate institute
It states CSCF network elements and media session is obtained according to the session id, and notify TrGW, so that the TrGW will be in the media session
The IP address of UE switches to the second IP address from the first IP address.Due to the network information and first IP address of the second IP address
The network information is identical, and the IP address type of the second IP address is identical with the IP address type of the first IP address so that CSCF is notified
TrGW directly refreshes IP address in media session, ensure that being switched fast for business.
In one possible implementation, when the target network is 5G networks, the control plane of the target network
Network element is NG CP2；Alternatively, when the target network is 4G networks, the control plane network element of the target network is mobile management
Entity MME.Realize source network being switched fast to 5G networks or source network to the business of 4G networks.
Second aspect provides a kind of service switching device, and described device is for realizing source network in above-mentioned first aspect
Control plane network element performed by business switch method.
The third aspect provides a kind of service switching device, and described device is for realizing target network in above-mentioned first aspect
Business switch method performed by the control plane network element of network.
Fourth aspect provides a kind of service switchover system, including：The control plane network element of source network, for receiving CSCF
It is that business establishes the first request message carried that network element, which is sent, and first request message includes：The IP of carrying, which is not anchored, to be cut
Change instruction；The second request for UE to be switched to target network from source network for receiving the access network equipment transmission of source network disappears
Breath；Third request message is sent to the control plane network element of target network, the third request message includes：IP is not anchored switching and refers to
Show, the IP address type of the network information of the first IP address and first IP address；The control plane network element of target network is used
In the third request message that the control plane network element for receiving the source network is sent；It is not anchored switching instruction according to the IP, for institute
It states UE and distributes the second IP address, wherein the network information phase of the network information of second IP address and first IP address
Together, the IP address type of second IP address is identical with the IP address type of first IP address；To the source network
Control plane network element sends response message, and the response message includes the second IP address；The control plane network element of source network, is additionally operable to connect
Receive the response message that the control plane network element of target network element is sent；The 4th request message is sent to the UE, the 4th request disappears
Breath includes the second IP address, and second IP address is used to indicate the UE and switches to the second IP address from the first IP address.By
This is not anchored switching instruction according to IP, and UE, need not be after the user plane network element of source network in network switching, then is switched to
Target network, due to the network information and the first IP address of the second IP address that the control plane network element of target network is UE distribution
The network information is identical, and the IP address type of the second IP address is identical with the IP address type of the first IP address, therefore avoids matchmaker
Body across a network renegotiates process, and realization is switched fast the exigent business of time delay.
5th aspect provides a kind of computer storage media, including instruction, when run on a computer so that
Computer executes the business switch method performed by the control plane network element of source network in above-mentioned first aspect.
6th aspect provides a kind of computer storage media, including instruction, when run on a computer so that
Computer executes the business switch method performed by the control plane network element of target network in above-mentioned first aspect.
The technique effect that embodiments of the present invention second aspect is obtained to the 6th aspect is corresponding with first aspect
The technique effect that technological means obtains is approximate, repeats no more herein.
Description of the drawings
Fig. 1 is the schematic diagram that UE switches between source network and target network in the prior art；
Fig. 2 is a kind of schematic diagram of service switchover system shown according to an exemplary embodiment；
Fig. 3 is to show a kind of schematic diagram of service switchover system according to another exemplary embodiment；
Fig. 4 is to show a kind of schematic diagram of service switchover system according to another exemplary embodiment；
Fig. 5 is a kind of structural schematic diagram of control plane network element shown according to an exemplary embodiment；
Fig. 6 is a kind of business switch method flow chart shown according to an exemplary embodiment；
Fig. 7 is a kind of business switch method flow chart shown according to another exemplary embodiment；
Fig. 8 is a kind of structural schematic diagram of service switching device shown according to an exemplary embodiment；
Fig. 9 is the structural schematic diagram of another service switching device shown according to an exemplary embodiment.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.
Term " first ", " second " in the description and claims of this application and above-mentioned attached drawing etc. are for distinguishing
Different objects, rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, it is intended that
It is to cover and non-exclusive includes.Such as include that process, method, system, product or the equipment of series of steps or unit does not have
It is defined in the step of having listed or unit, but further includes the steps that optionally not listing or unit, or optionally also wrap
It includes for the intrinsic other steps of these processes, method, product or equipment or unit.
Fig. 2 is a kind of schematic diagram of service switchover system shown according to an exemplary embodiment, is mainly wrapped in the system
Include the control plane network element 210 of active electric network and the control plane network element 220 of target network.Control plane network element is the control of equipment of the core network
Veil member processed, which further includes user plane network element in addition to control plane network element.
UE230 can be by transmitting information between the access network equipment of source network and the source network, such as carries out real-time industry
Business transmission, the real time business are very high to delay requirement.Wherein, UE230 can be used for reality for all of such as mobile phone etc
The communication terminal of existing mobile communication, the embodiment of the present invention are not construed as limiting this.
In the concrete realization, which can also include IP multimedia subsystem (IP Multimedia
Subsystem, IMS) in call session control function (Call Session Control Function, CSCF) network element
240.The CSCF network elements are used for after UE230 completes access by source network, and whether inspection business, which needs progress IP not to be anchored, is cut
It changes.When business needs progress IP not to be anchored switching, it is that business is established that CSCF network elements are sent to the control plane network element 210 of source network
First request message of carrying, first request message include that IP is not anchored switching instruction.
Then, it is that business establishes the first of carrying that the control plane network element 210 of source network, which is used to receive CSCF network elements and sends,
Request message, which includes that the IP of carrying is not anchored switching instruction, in the access network equipment for receiving source network
What is sent is used for by UE230 after source network is switched to the second request message of target network, to the control veil of target network
Member 220 sends third request message, and third request message includes：IP be not anchored switching instruction, the first IP address the network information
And the IP address type of first IP address.
The control plane network element 220 of target network is used for after receiving third request message, is not anchored switching according to IP and is referred to
Show, distributes the second IP address for UE, and response message is sent to the control plane network element 210 of source network, the response message includes
Second IP address, wherein the network information of the second IP address is identical with the network information of the first IP address, the IP of the second IP address
Address style is identical with the IP address type of the first IP address.
The control plane network element 210 of source network is additionally operable to, and is disappeared in the response that the control plane network element 220 for receiving target network is sent
After breath, according to the response message, the 4th request message is sent to UE230, the 4th request message includes the second IP address, the 2nd IP
Address is used to indicate UE230 and switches to the second IP address from the first IP address.Switching instruction it is not anchored according to IP as a result, UE exists
, need not be after the user plane network element of source network when network switching, then it is switched to target network, due to the control plane of target network
Network element is that the network information of the second IP address of UE distribution is identical with the network information of the first IP address, the IP of the second IP address
Location type is identical with the IP address type of the first IP address, therefore avoids the process that renegotiates of media across a network, realization pair
The very high business of delay requirement is switched fast.
In the concrete realization, which further includes：The session id of IP change detections event and CSCF network elements；Source
After network-based control veil member 210 receives the response message of control 220 yuan of transmissions of veil of target network, cut according to the IP
Detecting event is changed, sends and notifies to CSCF network elements, the notice includes session id, the first IP address and the 2nd IP of CSCF network elements
Address, the notice is used to indicate CSCF network elements and obtains media session according to session id, and notifies transfer gateway (Transition
Gateway, TrGW) so that the IP address of UE in media session is switched to the second IP address by TrGW from the first IP address.Due to
The network information of second IP address is identical with the network information of the first IP address, the IP address type and the first IP of the second IP address
The IP address type of address is identical so that CSCF notices TrGW directly refreshes IP address in media session, ensure that business
It is switched fast..
Wherein, the control plane network element 220 of above-mentioned target network is mainly used for receiving the transmission of control plane network element 210 of source network
IP be not anchored switching instruction, the network information of first IP address and first IP address IP address type, and
Identical with the IP address type of the first IP address the is distributed in the network that the network information of first IP address is identified
Two IP address, UE 230 complete the switching from source network to target network using second IP address.
It should be noted that following FIG. 6 or Fig. 7 embodiments institute may be used in the interaction in above system between each entity
The business switch method that shows is realized.
It should also be noted that, in embodiments of the present invention, above-mentioned source network is the network that the UE230 is currently accessed, on
It is UE230 networks to be accessed to state target network, for example, the source network can be 5G networks, which is 5G networks,
At this point, the present embodiments relate to be service switching of the 5G networks to 5G networks.Alternatively, the source network may be 5G nets
Network, the target network be 4G networks, at this point, the present embodiments relate to be service switching of the 5G networks to 4G networks.
When source network is 5G networks, the control plane network element 210 of the source network can be next-generation core network control surface work(
It can (Next Generation Core Control Plane functions, NG CP) 1.
Different according to the type of the target network, the control plane network element 220 of the target network is also different, for example, working as the mesh
When mark network is 4G networks, the control plane network element 210 of the target network can be mobile management entity (Mobility
Management Entity, MME), and when the target network is 5G networks, the control plane network element 220 of the target network can be with
There is the function similar with the MME for NG CP2, the NG CP2.
Referring to FIG. 3, the Fig. 3 is to show a kind of schematic diagram of service switchover system according to another exemplary embodiment.
Include mainly NG CP310 and NG CP320 in the system.
Wherein, in the service switching scene by 5G networks to 5G networks, the NG CP310 and the source network in Fig. 2 systems
Control plane network element 210 correspond to, the NG CP320 are corresponding with the control plane network element 220 of the target network in Fig. 2 systems.
In the concrete realization, application function (Application Function, AF) network element is also possible that in the system
330, next-generation core network user face function (Next Generation Core User Plane functions, NG UP) net
Member 340, NG UP 350, Next-Generation enter network (Next Generation Radio Access Network, NG
RAN) 360 and NG RAN370.The NG UP340 and NG RAN360 can be used for
UE230 establishes service transmission channels, for example, the business is the business to delay sensitive.The NG UP350 and the NG RAN370 can
For establishing service transmission channels in 5G networks for UE230 with NG CP320 cooperations.
Referring to FIG. 4, the Fig. 4 is to show a kind of schematic diagram of service switchover system according to another exemplary embodiment.
Include mainly NG CP410 and MME420 in the system.
Wherein, in the service switching scene by 5G networks to 4G networks, the NG CP 410 and the source net in Fig. 2 systems
The control plane network element 210 of network corresponds to, and the MME420 is corresponding with the control plane network element 220 of the target network in Fig. 2 systems.
In the concrete realization, be also possible that in the system AF430, NG UP 440, SGW/PGW450, NG RAN460,
The node B (evolved Node B, eNB or e-NodeB) 470 of evolution.The NG UP440 and NG RAN460 can be used for
NG CP410 cooperations establish service transmission channels in 5G networks for UE230.The MME450 and eNB470 can be used for
MME420 cooperations establish service transmission channels in 4G networks for UE230.
Certainly, it should be noted that it is above-mentioned be only by taking Fig. 2 systems are applied in Fig. 3 and system shown in Fig. 4 as an example into
Row explanation, in another embodiment, system described in the Fig. 2 can also be applied to other any can realize and cut between heterogeneous networks
In the system changed, the embodiment of the present invention is not construed as limiting this.
Fig. 5 is a kind of structural schematic diagram of control plane network element shown according to an exemplary embodiment, the control plane network element
Include transmitter 510, receiver 520, memory 530, processor 540 and communication bus 550 in 500.Art technology
Personnel are appreciated that the structure of control plane network element 500 shown in Fig. 5 does not constitute the restriction to control plane network element 500, can be with
Including than illustrating more or fewer components, either combining certain components or different components arrangement, the embodiment of the present application pair
This is not limited.
Wherein, which can be used for UE or other control plane network element transmission datas and/or signaling etc..It should
Receiver 520 can be used for receiving the data that CSCF network elements or other control plane network elements are sent and/or signaling etc..The memory
530 can be used for storing the data and/or signaling that above-mentioned CSCF network elements are sent, also, the memory 530 can be used for storing
One or more operation programs and/or module for executing business switch method.In the concrete realization, which goes back
It can be used for calling the multiple operation programs and/or module in external software systems.The memory 530 stores for a kind of computer
Medium, the computer storage media include instruction, when run on a computer so that computer executes control plane network element institute
The business of execution.
Wherein, which is the control centre of the control plane network element 110.The processor 540 can with one it is general in
Central processor (Central Processing Unit, CPU), microprocessor, application-specific integrated circuit (Application-
Specific Integrated Circuit, ASIC), or one or more collection for controlling the execution of application scheme program
At circuit.The processor 540 can by running or execute the software program and/or module that are stored in memory 530, and
It calls and is stored in data in memory 530, to realize business switch method that following FIG. 7 or Fig. 8 embodiments are provided.
Wherein, which may include an access, and letter is transmitted between above-mentioned processor 540 and memory 530
Breath.
It should be noted that the control plane network element of source network and the control plane network element of target network can use Fig. 5 institutes
The structure shown, specific implementation is as described in Figure 5, and details are not described herein again.
Fig. 6 is a kind of business switch method flow chart shown according to an exemplary embodiment.This method can be applied to
In Fig. 2, Fig. 3 or shown in Fig. 4 system.Here with source network be 5G networks, target network be 5G networks for illustrate,
In the case of this kind, the control plane network element of the source network corresponds to the NG CP320 in NG CP310 or Fig. 4 in Fig. 3, in order to
Convenient for narration, NG CP1 are hereafter may be collectively referred to as, the control plane network element of the target network can correspond to the NG in Fig. 3
CP320 hereafter may be collectively referred to as NG CP2, the side that the embodiment of the present invention is interacted with NG CP1 and NG CP2 for the ease of narration
It is illustrated for the method for formula realization service switching.
Step 610, NG CP1 receive CSCF network elements send be business establish carrying the first request message, described first
Request message includes：The IP of carrying is not anchored switching instruction.
Specifically, after UE accesses 5G networks by NG RAN1, service call is generated, such as to the business of delay sensitive
Service call.
Wherein, IP is not anchored switching and is designated as a parameter, such as the ginseng when a certain specific fields in the first request message
When numerical value is 1, then illustrate that first request message carries IP and is not anchored switching instruction.Correspondingly, when parameter value is 0, then say
Bright first request message does not carry IP and is not anchored switching instruction.It is not anchored the carrying of switching instruction, Ke Yigen for not carrying IP
According to the method in background technology, the switching of business is carried out.NG RAN1 are the access network equipment of source network.
Step 620, NG CP1 receive that NG RAN1 send for second asking UE is switched to target network from source network
Seek message.
Include the second of cell measurement information asking to NG CP1 transmissions specifically, after NG RAN1 acquisition cell measurement information
Seek message.
The cell measurement information may include：The information of the information of neighboring community, the neighboring community includes Base Station Identification.
Step 630, according to second request message, NG CP1 send third request message, the third to NG CP2
Request message includes：IP be not anchored switching instruction, the network information of the first IP address and first IP address IP address
Type；NG CP2 receive third request message.
Specifically, NG CP1 according to Base Station Identification, can obtain the information such as priority, capacity and the load of base station, and really
The cell to set the goal belonging to base station and target BS, according to the type of target BS to determine whether belonging to different type network
Between switching, the cell belonging to target BS determines that target BS belongs to the equipment of the core network of which target network, to
Determine that the control plane network element of target network is NG CP2.
Step 640, switching instruction it is not anchored according to IP, NG CP2 are that UE distributes the second IP address, wherein the second IP address
The network information it is identical with the network information of the first IP address, the IP address type of the second IP address and the IP of the first IP address
Location type is identical.
Specifically, IP address type can be fourth edition (the Internet Protocol version of Internet protocol
4, IPv4), in 5G networks, the network information can be retouched by domain network name (Domain Network Name, DNN) information
It states, there is IP address pond in NG CP2, NG CP2 are selected and the network information of the first IP address, the first IP address in address pool
The all identical IP address of IP address type is as the second IP address.
Meanwhile NG CP2 notice NG RAN2 (are not shown) distributing radio resource in Fig. 6, such as channel energy, subchannel
Quantity etc. establishes the connection of NG RAN2 and NG UP2.Wherein, NG RAN2 are the access network equipment of target network.
Step 650, NG CP2 send response message to NG CP1, and the response message includes the second IP address；NG CP1
Receive response message.
Step 660, message, NG CP1 send the 4th request message to UE according to response, and the 4th request message includes second
IP address, the second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
Therefore, switching instruction it is not anchored according to IP, UE, need not be through the user plane network element of source network in handover network
Afterwards, then be switched to target network, due to the second IP address that the control plane network element of target network is UE distribution the network information and
The network information of first IP address is identical, and the IP address type of the second IP address is identical with the IP address type of the first IP address,
Therefore the process that renegotiates of media across a network is avoided, realization is switched fast the exigent business of time delay.
In the concrete realization, the first request message further includes：The session id of IP change detections event and CSCF network elements, step
Can also include after 650：Step 670, according to the IP change detections event and session id, NG CP1 are sent to CSCF network elements
Notice, the notice include session id, the first IP address and the second IP address of CSCF network elements, and the notice is used to indicate CSCF
Network element obtains media session according to session id, and notifies TrGW so that TrGW by the IP address of UE in the media session from the
One IP address switches to the second IP address.
Specifically, the IP address of UE is stored in media session, for example, before business does not switch, the IP address of UE
For the first IP address.TrGW can by the IP address of the UE stored in media session from the first IP address with being switched to the 2nd IP
Bearing link between UE and source network is so far switched to the bearing link of UE and target network by location, realizes the quick of business
Switching.
Wherein, the execution sequence of step 660 and step 670 is not limited by numbering, can be first carry out step 660, then
Step 670 is executed, alternatively, first carrying out step 670, then step 660 is executed, alternatively, step 660 and step 670 are performed simultaneously.
It should be noted that the specific implementation process that the UE and source network, target network establish data transmission channel can be with
Referring to the relevant technologies, the embodiment of the present invention does not describe in detail herein.
Fig. 7 is a kind of business switch method flow chart shown according to another exemplary embodiment.This method can also answer
For in Fig. 2, Fig. 3 or shown in Fig. 4 system.Here with source network be 5G networks, target network be 4G networks for said
Bright, in that case, the control plane network element of the source network is NG CP1, and the control plane network element of the target network can correspond to
MME420 in Fig. 4, the embodiment of the present invention illustrate for realizing service switching in the way of NG CP1 and MME interactions.
Step 710, NG CP1 receive CSCF network elements send be business establish carrying the first request message, described first
Request message includes：The IP of carrying is not anchored switching instruction.
Step 720, NG CP1 receive that NG RAN1 send for second asking UE is switched to target network from source network
Seek message.
Specifically, the realization method of step 710-720 is identical as the realization method of step 710-720, details are not described herein again.
Step 730, according to second request message, NG CP1 send third request message, the third request to MME
Message includes：IP be not anchored switching instruction, the network information of the first IP address and first IP address IP address type；
MME receives third request message.
Specifically, NG CP1 can determine the ponds MME according to Base Station Identification, according to the priority of MME in the ponds MME, capacity and
The information such as load, select MME, using selected MME as the control plane network element of target network from the ponds MME.
Step 740, switching instruction is not anchored according to the IP, MME is that UE distributes the second IP address, the net of the second IP address
Network information is identical with the network information of the first IP address, the IP address class of the IP address type and the first IP address of the second IP address
Type is identical.
Specifically, MME is not anchored switching instruction according to IP, the second IP address is distributed for UE in IP address pond, this second
IP address has the network information identical with the first IP address and identical IP address type.
Meanwhile distributing radio resource, such as channel energy, the quantity of subchannel (is not shown) in MME notices eNodeB in Fig. 7
Deng establishing the connection of MME and eNodeB.Wherein, eNodeB is the access network equipment of target network.
Step 750, MME sends response message to NG CP1, and the response message includes the second IP address；NG CP1 are received
Response message.
Step 760, message, NG CP1 send the 4th request message to UE according to response, and the 4th request message includes
Second IP address, second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
In the concrete realization, the first request message further includes：The session id of IP change detections event and CSCF network elements, step
Can also include after 750：Step 770, according to the IP change detections event and session id, NG CP1 are sent to CSCF network elements
Notice, the notice include session id, the first IP address and the second IP address of CSCF network elements, and the notice is used to indicate CSCF
Network element obtains media session according to session id, and notifies TrGW so that TrGW by the IP address of UE in the media session from the
One IP address switches to the second IP address.So far, the bearing link between UE and source network is switched to holding for UE and target network
Link is carried, being switched fast for business is realized.
It should be noted that the specific implementation process that the UE and source network, target network establish data transmission channel can be with
Referring to the relevant technologies, the embodiment of the present invention does not describe in detail herein.
Fig. 8 is a kind of structural schematic diagram of service switching device shown according to an exemplary embodiment, the service switching
Device is used to execute method performed by the control plane network element of source network in business switch method, can by software, hardware or
The two is implemented in combination with.The service switching device may include：Receiving unit 810, transmission unit 820.
Receiving unit 810, it is the first request message that business establishes carrying to send for receiving CSCF network elements, described the
One request message includes：The IP of carrying is not anchored switching instruction.
The receiving unit 810, is additionally operable to receive that the access network equipment of source network sends for cutting UE from source network
Change to the second request message of target network.
Transmission unit 820, for according to second request message, sending third to the control plane network element of target network and asking
The message, the third request message is asked to include：IP is not anchored switching instruction, the network information of the first IP address and described first
The IP address type of IP address, so that the control plane network element of the target network is not anchored switching instruction according to the IP, for institute
It states UE and distributes the second IP address, the network information of second IP address is identical with the network information of the first IP address, the 2nd IP
The IP address type of address is identical with the IP address type of the first IP address.
The receiving unit 810 is additionally operable to receive the response message that the control plane network element of target network is sent, the response
Message includes：Second IP address.
The transmission unit 820 is additionally operable to send the 4th request message to the UE, and the 4th request message includes the
Two IP address, second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
First request message further includes：The session id of IP change detections event and CSCF network elements；
After the receiving unit 810 receives the response message of control plane network element transmission of target network, the transmission is single
Member 820 is additionally operable to according to the IP change detections event, and the control plane network element of the source network is sent to the CSCF network elements to be led to
Know, the notice includes session id, the first IP address and the second IP address of the CSCF network elements, and the notice is used to indicate institute
It states CSCF network elements and media session is obtained according to the session id, and notify TrGW, so that the TrGW is by the media session
IP address switches to the second IP address from the first IP address.
The device provided through the embodiment of the present invention, is not anchored switching instruction according to IP, and UE is not needed in network switching
After the user plane network element of source network, then it is switched to target network, since the control plane network element of target network is UE distribution the
The network information of two IP address is identical with the network information of the first IP address, the IP address type of the second IP address and the first IP
The IP address type of location is identical, therefore avoids the process that renegotiates of media across a network, realizes to the exigent industry of time delay
Business is switched fast.
It should be noted that：The business switch method that above-described embodiment provides is when realizing service switching, only with above-mentioned each
The division progress of function module, can be as needed and by above-mentioned function distribution by different work(for example, in practical application
Energy module is completed, i.e., the internal structure of equipment is divided into different function modules, to complete whole described above or portion
Divide function.In addition, the service switching device that above-described embodiment provides belongs to same design with business switch method embodiment, have
Body realizes that process refers to embodiment of the method, and which is not described herein again.
Fig. 9 is the structural schematic diagram of another service switching device shown according to an exemplary embodiment, which cuts
Changing device is used to execute method performed by the control plane network element of source network in business switch method, can by software, hardware or
Both persons' is implemented in combination with.The service switching device may include：Receiving unit 910, allocation unit 920, transmission unit 930.
Receiving unit 910, the first request message that the control plane network element for receiving source network is sent, first request
Message includes：IP be not anchored switching instruction, the network information of the first IP address and first IP address IP address type.
Allocation unit 920 distributes the second IP address, wherein described second for not being anchored switching instruction according to IP for UE
The network information of IP address is identical with the network information of the first IP address, the IP address type and the first IP address of the second IP address
IP address type it is identical.
Transmission unit 930, for sending response message to the control plane network element of the source network, the response message includes
Second IP address, so that the control plane network element of the source network sends the second request message to the UE, second request disappears
Breath includes the second IP address, and second IP address is used to indicate the UE and switches to the second IP address from the first IP address.
The device provided through the embodiment of the present invention, is not anchored switching instruction according to IP, and UE is not needed in network switching
After the user plane network element of source network, then it is switched to target network, simultaneously because the control plane network element of target network distributes for UE
The second IP address the network information it is identical with the network information of the first IP address, the IP address type of the second IP address and first
The IP address type of IP address is identical, therefore avoids the process that renegotiates of media across a network, realizes very high to delay requirement
Business be switched fast.
It should be noted that：The business switch method that above-described embodiment provides is when realizing service switching, only with above-mentioned each
The division progress of function module, can be as needed and by above-mentioned function distribution by different work(for example, in practical application
Energy module is completed, i.e., the internal structure of equipment is divided into different function modules, to complete whole described above or portion
Divide function.In addition, the service switching device that above-described embodiment provides belongs to same design with business switch method embodiment, have
Body realizes that process refers to embodiment of the method, and which is not described herein again.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its arbitrary combination real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, special meter
Calculation machine, computer network or other programmable devices.The computer instruction can be stored in computer readable storage medium
In, or be transmitted by the computer readable storage medium.The computer instruction can be from a web-site, meter
Calculation machine, server or data center are (such as red by wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless
Outside, wirelessly, microwave etc.) mode is transmitted to another web-site, computer, server or data center.The calculating
Machine readable storage medium storing program for executing can be that any usable medium that computer can access either includes one or more usable mediums
The data storage devices such as integrated server, data center.The usable medium can be magnetic medium, (for example, floppy disk, hard
Disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state disk Solid State Disk (SSD))
Deng.
The above, the only specific implementation mode of embodiments herein, any technology people for being familiar with the art
For member in the technical scope that the application discloses exposure, the change or replacement that can be readily occurred in should all cover the implementation in the application
Within the protection domain of example.
Claims (10)
1. a kind of business switch method, which is characterized in that the method includes：
It is that business establishes the first of carrying that the control plane network element of source network, which receives call session control function CSCF network elements and sends,
Request message, first request message include：The IP of carrying is not anchored switching instruction；
What the access network equipment of the control plane network element reception source network of the source network was sent is used to UE being switched to from source network
Second request message of target network；
According to second request message, the control plane network element of the source network sends third to the control plane network element of target network
Request message, the third request message include：IP is not anchored switching instruction, the network information of the first IP address and described the
The IP address type of one IP address；
It is not anchored switching instruction according to the IP, the control plane network element of the target network is that the UE distributes the second IP address,
Wherein, the network information of second IP address is identical with the network information of first IP address, second IP address
IP address type is identical with the IP address type of first IP address；
The control plane network element of the target network sends response message, the response message to the control plane network element of the source network
Including the second IP address；
The control plane network element of the source network sends the 4th request message to the UE, and the 4th request message includes the 2nd IP
Address, second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
2. according to the method described in claim 1, it is characterized in that, first request message further includes：IP change detection things
The session id of part and CSCF network elements；
After the control plane network element of the source network receives the response message of control plane network element transmission of target network, the method
Further include：
According to the IP change detections event, the control plane network element of the source network is sent to the CSCF network elements to be notified, described
Notice includes session id, the first IP address and the second IP address of the CSCF network elements, and the notice is used to indicate the CSCF
Network element obtains media session according to the session id, and notifies transfer gateway TrGW, so that the TrGW is by the media session
The IP address of middle UE switches to the second IP address from the first IP address.
3. according to claim 1-2 any one of them methods, which is characterized in that when the target network is 5G networks, institute
The control plane network element for stating target network is NG CP2；Alternatively,
When the target network is 4G networks, the control plane network element of the target network is mobile management entity MME.
4. a kind of service switching device, which is characterized in that described device includes：
Receiving unit is that business establishes the first request message carried, first request for receiving CSCF network elements and sending
Message includes：The IP of carrying is not anchored switching instruction；
The receiving unit, is additionally operable to receive that the access network equipment of source network sends for UE to be switched to target from source network
Second request message of network；
Transmission unit, for according to second request message, third request message to be sent to the control plane network element of target network,
The third request message includes：IP is not anchored switching instruction, the network information of the first IP address and first IP address
IP address type so that the control plane network element of the target network is not anchored switching instruction according to the IP, for the UE point
With the second IP address, wherein the network information of second IP address is identical with the network information of first IP address, described
The IP address type of second IP address is identical with the IP address type of first IP address；
The receiving unit is additionally operable to receive the response message that the control plane network element of target network is sent, the response message packet
It includes：Second IP address；
The transmission unit is additionally operable to send the 4th request message to the UE, and the 4th request message is including the 2nd IP
Location, second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
5. device according to claim 4, which is characterized in that first request message further includes：IP change detection things
The session id of part and CSCF network elements；
After the receiving unit receives the response message of control plane network element transmission of target network, the transmission unit is also used
It is notified in being sent to the CSCF network elements according to the control plane network element of the IP change detections event, the source network, it is described logical
Know that session id, the first IP address and the second IP address including the CSCF network elements, the notice are used to indicate the CSCF nets
Member obtains media session according to the session id, and notifies TrGW, so that the TrGW is by the IP of UE in the media session
Location switches to the second IP address from the first IP address.
6. according to claim 4-5 any one of them devices, which is characterized in that when the target network is 5G networks, institute
The control plane network element for stating target network is NG CP2；Alternatively,
When the target network is 4G networks, the control plane network element of the target network is mobile management entity MME.
7. a kind of service switching device, which is characterized in that described device includes：
Receiving unit, the first request message that the control plane network element for receiving source network is sent, the first request message packet
It includes：IP be not anchored switching instruction, the network information of the first IP address and first IP address IP address type；
Allocation unit distributes the second IP address, wherein described for not being anchored switching instruction according to the IP for the UE
The network information of two IP address is identical with the network information of first IP address, the IP address type of second IP address and
The IP address type of first IP address is identical；
Transmission unit, for sending response message to the control plane network element of the source network, the response message includes the 2nd IP
Address, so that the control plane network element of the source network sends the second request message to the UE, second request message includes
Second IP address, second IP address are used to indicate the UE and switch to the second IP address from the first IP address.
8. a kind of service switchover system, which is characterized in that the system comprises：
The control plane network element of source network is that business establishes the first request message carried, institute for receiving CSCF network elements and sending
Stating the first request message includes：The IP of carrying is not anchored switching instruction；Being used for for the access network equipment transmission of reception source network will
UE is switched to the second request message of target network from source network；Third request is sent to the control plane network element of target network to disappear
Breath, the third request message include：IP is with not being anchored switching instruction, the network information of the first IP address and the first IP
The IP address type of location；
The control plane network element of target network, the third request message that the control plane network element for receiving the source network is sent；Root
According to the IP be not anchored switching instruction, for the UE distribute the second IP address, wherein the network information of second IP address and
The network information of first IP address is identical, the IP of the IP address type of second IP address and first IP address
Location type is identical；Response message is sent to the control plane network element of the source network, the response message includes the second IP address；
The control plane network element of the source network is additionally operable to receive the response message that the control plane network element of target network element is sent；To institute
It states UE and sends the 4th request message, the 4th request message includes the second IP address, and second IP address is used to indicate institute
It states UE and switches to the second IP address from the first IP address.
9. system according to claim 8, which is characterized in that first request message further includes：IP change detection things
The session id of part and CSCF network elements；
The control plane network element of the source network, be additionally operable to receive target network control plane network element send response message it
Afterwards, it is used to, according to the IP change detections event, send and notify to the CSCF network elements, the notice includes the CSCF network elements
Session id, the first IP address and the second IP address, the notice is used to indicate the CSCF network elements and obtained according to the session id
Media session is taken, and notifies TrGW, so that the TrGW switches the IP address of UE in the media session from the first IP address
To the second IP address.
10. according to claim 8-9 any one of them systems, which is characterized in that when the target network is 5G networks, institute
The control plane network element for stating target network is NG CP2；Alternatively,
When the target network is 4G networks, the control plane network element of the target network is mobile management entity MME.
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