CN106559769A - A kind of communication means, device and terminal - Google Patents
A kind of communication means, device and terminal Download PDFInfo
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- CN106559769A CN106559769A CN201510628624.2A CN201510628624A CN106559769A CN 106559769 A CN106559769 A CN 106559769A CN 201510628624 A CN201510628624 A CN 201510628624A CN 106559769 A CN106559769 A CN 106559769A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/24—Accounting or billing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
- H04W36/1446—Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed
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Abstract
The invention discloses a kind of communication means, device and terminal, including：Terminal passes through the first access network protocol multi-media sub-system network IMS；After terminal switches to the second access network from the first access network, terminal sends refresh requests in dialogue and gives IMS network side, wherein, in the dialogue, refresh requests carry access network indication message, and the access network indication message includes the access network type before and after access network switching.Communication means disclosed by the invention, device and terminal, can simply and effectively realize that IMS perceives the switching of access network type, carry out differentiated charging for different access networks type in order to follow-up.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of communication means, device and terminal.
Background technology
VoLTE (Voice over LTE) refers to terminal use through long-term evolving network (LTE, Long
Term Evolution) packet-based core networks (EPC, Evolved Packet Core) are accessed, then it is many by IP
Media subsystem network (IMS, IP Multimedia Subsystem) is end users with high quality
Audio frequency and video business.VoLTE technologies bring higher quality, more natural voice and video telephone effect to user
Fruit and shorter turn-on time.
The VoLTE network architectures mainly include four-layer network network：Ground floor is client layer；The second layer is access
Layer, LTE is a kind of access network；Third layer is packet-based core networks, and EPC is carried for voice-and-data business
For carrying；4th layer be IMS layers, IMS provide voice/video basic supplementary service.
Fig. 1 is existing VoLTE and VoWIFI (Voice over WIFI) network architecture schematic diagram.Such as
Shown in Fig. 1, third generation partnership (3GPP, Third Generation Partnership Project)
The VoLTE business network frameworks of definition include following entity：Terminal (UE, User Equipment)
101, it is responsible for initiating business request；Access network 102, usually enode (eNodeB, Evolved
NodeB) entity, is responsible for terminal wireless and accesses；Mobility Management Entity (MME, Mobility
Management Entity) 103, it is responsible for terminal access authentication etc.；Gateway (S-GW, Serving
GateWay)104；Public data network gateway (P-GW, PDN GateWay) 105, there is provided public
The connection of data network and IMS；Policy charging rule functional entity (PCRF, Policy and Charging
Rule Function) 106, it is responsible for the acquisition of policy control and charging regulation and notifies that policy, billing is held
Row functional entity (PCEF, Policy and Charging Enforcement Function), P-GW is just
It is a kind of PCEF；Proxy call conversation control function entity (P-CSCF, Proxy call session control
Function) 107, it is responsible for user and accesses IMS network；Query call conversation control function entity
(I-CSCF, Interrogating call session control Function) and service Call-Establish-Success rate work(
Energy entity (S-CSCF, Serving call session control Function) 108, is responsible for IMS user
Service control；Application server (AS, Application Server) 109, provides the user basic
Supplementary service；Charging data function entity (CDF, Charging Data Function)/charging gateway work(
Energy entity (CGF, Charging Gateway Function) 110, is responsible for output charging bill to tent
Center.
WLAN (WLAN, Wireless Local Area Networks) utilizes radio-frequency technique,
Realize without netting twine, the unobstructed network without distance limit.Wherein, Wireless Fidelity (WIFI,
WirelessFidelity) it is a kind of technology of important Wireless Networking in WLAN.VoWIFI(Voice
Over WIFI) it is exactly that voice call is realized by WIFI network, it is the common voice based on WLAN
Solution, not only can so be forth generation mobile communication technology (4G) network coverage of operator
(particularly in-door covering) is supplemented, and user can also be greatly reduced and makes a phone call (voice communication)
Cost (usual VoWIFI conversation rates are low), therefore, VoWIFI and VoLTE becomes global fortune
The focus that battalion business pays close attention to.
The VoWIFI network architectures introduce part network element on VoLTE network foundations, as shown in figure 1,
Increased following entity：WLAN access networks 111, including WIFI access devices；Enhancement mode is public
Data Network Gateway (ePDG, enhanced packet data gateway) 112, is responsible for WLAN wireless
Access and connect P-GW.
The technical scheme of VoWIFI, effectively compensate for VoLTE and covers not enough problem, support VoWIFI
With the seamless switching of VoLTE, user do not affect to carry out when two kinds of access networks are switched over
Business, including voice call.Fig. 2 is cut for calling of the user from LTE to WLAN in prior art
Change and charging flow figure.As shown in Fig. 2 user switches in set up between LTE and wlan network exhaling
Cry and switch, including following committed step：
Step 201：Terminal use is registered to IMS network by LTE network through EPC networks；
Step 202：Terminal use initiates call request, such as voice call request；The call request is passed through
The eNodeB equipment of LTE network, reaches the P-GW network elements of EPC networks；
Step 203：The call request that terminal use is initiated by P-GW network elements, is forwarded to IMS network
P-CSCF network elements；
Step 204：P-CSCF initiates Diameter AAR (AA-Request) to PCRF please
Ask, the request is mainly used in the acquisition and subscription of user's accessing position information；
Step 205：PCRF gets positional information from P-GW network elements；
Step 206：PCRF returns Diameter AAA (AA-Answer) responses to P-CSCF,
User's accessing position information, including access network type are returned in the response message, is now connect for LTE
Enter；
Step 207：S-CSCF and AS is arrived in P-CSCF forwarded calls request；
Step 208：After S-CSCF and AS processes call request, access success response is returned；
Step 209：S-CSCF and AS can send accounting request to CDF/CGF, so as to CDF/CGF
Output charging bill, wherein, user access network type is carried in charging request message；
Step 210：CDF/CGF sends charging response to S-CSCF and AS；
Step 211：P-CSCF gives P-GW forwarded call success responses；
Step 212：To terminal use, now, terminal use can be with for P-GW forwarded calls success response
Voice call is carried out with peer user, wherein, media path is related to：UE-LTE-SGW-PGW-IMS
Deng network element；
Step 213：Terminal use supports to be switched to WLAN (WIFI) coverings from LTE overlay areas
Region, now, terminal use is linked into P-GW through WIFI/ePDG, and P-GW ensures terminal use
Address do not change, the calling that user has conversed can be normally carried out, wherein, media path is related to：
The network elements such as UE-WIFI-ePDG-PGW-IMS.
In this, terminal use is switched to wlan network from LTE, or is switched to LTE from WLAN
Network, for the calling conversed, can realize taking over seamlessly and do not affect call function.Also, work as
User occur network switching when, IMS network is not perceived, IMS network for the calling conversed according to
It is old to carry out charging according to call duration.However, many operators propose, VoLTE and VoWIFI due to
Using different access networks, IMS network is needed to adopt different chargings for different access networks
Strategy, so that the operation of operator needs.
For this problem, prior art has following two solutions.Scheme one：UE completes WIFI
After switching and LTE network between, UE initiates re-register flow process, carries UE by registration request and cuts
Relevant information is changed to the AS of IMS.Scheme two：After UE carries out network switching, P-CSCF is according to IP
Connected reference network (IP-CAN, IP-Connectivity Access Network) session flow process or
IP-CAN change events or wireless access type (RAT, Radio Access Type)-change events
Switch Deng UE is perceived, P-CSCF notifies the AS of IMS.
However, such scheme one has following deficiency：First, the program has dependence to intermediate NE, because
Session Border Controller (SBC, Session Border Controller)/P-CSCF agency of trademark registration function meetings
Teste is registered, and causes the registration for carrying switching instruction to be likely to be absorbed；Second, the program pair
S-CSCF and AS have high demands, it is desirable to which S-CSCF and AS will be registered and correlation of call, for shared public affairs
Common user identifies (PUI) (multiple terminals share a number) scene, and S-CSCF associates note with AS
Volume and calling are extremely complex.Such scheme two has following deficiency：First, the program is required
P-CSCF/PCRF/P-GW ceaselessly detection terminal access network change or subscribe to terminal access
Network changes；Second, P-CSCF actively construct new message notification AS, need AS parsings newly to disappear
Cease and associate and called；It can be seen that, the program is excessively complicated, and high for other network element dependencies.
The content of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of communication means, device and terminal, can
Simply and effectively realize that IMS perceives the switching of access network type, in order to follow-up for different accesses
Network type carries out differentiated charging.
In order to reach above-mentioned technical purpose, the present invention provides a kind of communication means, is applied to terminal, including：
Terminal accesses IMS by the first access network；Connect when the terminal switches to second from the first access network
After entering network, the terminal sends refresh requests in dialogue and gives IMS network side, wherein, the dialogue
Interior refresh requests carry access network indication message, and the access network indication message includes connecing
Enter the access network type before and after network switching.
The present invention also provides a kind of terminal, including：Communication module, for being accessed by the first access network
IMS；Sending module, for, after terminal switches to the second access network from the first access network, sending
In dialogue, refresh requests give IMS network side, wherein, in the dialogue, refresh requests carry access network
Switching and network access indication message, the access network indication message include that access network switches
Access network type in front and back.
The present invention also provides a kind of communication means, is applied to IMS network side, including：In IMS
P-CSCF receives refresh requests in the dialogue initiated when access network type switches by terminal, and by institute
Refresh requests are sent in IMS in dialogue S-CSCF or AS are stated, wherein, brush in the dialogue
New request carries access network indication message, and the access network indication message includes access network
Access network type before and after network switching；The S-CSCF or AS refreshes according in the dialogue for receiving
Request generates access network type and the accounting request of switching time after carrying access network switching, and
The accounting request is sent to CDF or CGF.
The present invention also provides a kind of communication system, is applied to IMS network side, including：P-CSCF and
S-CSCF or AS；The P-CSCF, is sent out when access network type switches by terminal for receiving
Refresh requests in the dialogue for rising, and refresh requests in dialogue are sent to into S-CSCF or AS, wherein,
In the dialogue, refresh requests carry access network indication message, and the access network switching indicates letter
Breath includes the access network type before and after access network switching；The S-CSCF or AS, for root
The access network type after carrying access network switching is generated according to refresh requests in the dialogue for receiving and is cut
The accounting request of time is changed, and the accounting request is sent to CDF or CGF.
The present invention also provides a kind of communication means, the S-CSCF being applied in IMS or AS, including：
S-CSCF or AS receives refresh requests in dialogue, wherein, in the dialogue, refresh requests are carried and are connect
Enter network indication message, before and after the access network indication message includes access network switching
Access network type；The S-CSCF or AS is generated according to refresh requests in the dialogue for receiving and is carried
Access network type and the accounting request of switching time after access network switching, and send the charging
Ask to CDF or CGF.
The present invention also provides a kind of communicator, the S-CSCF being applied in IMS or AS, including：
Receiver module, for receiving refresh requests in dialogue, wherein, in the dialogue, refresh requests are carried and are accessed
Network switching configured information, the access network indication message include access network switching before and after connect
Enter network type；Sending module, carries access network for generating according to refresh requests in the dialogue for receiving
Access network type and the accounting request of switching time after switching, and send the accounting request to
CDF or CGF.
In the present invention, terminal accesses IMS by the first access network；When terminal is from the first access network
After switching to the second access network, terminal sends refresh requests in dialogue and gives IMS network side, wherein,
In the dialogue, refresh requests carry access network indication message, and the access network switching indicates letter
Breath includes the access network type before and after access network switching.In the present invention, by access network type
During switching, terminal actively sends in the dialogue for carrying the access network type before and after access network switches and refreshes
Request, switches so that IMS network perceives access network type.
In embodiments of the present invention, when being switched by access network type, terminal actively sends in dialogue and refreshes
Request so that IMS network perceives access network type and switches, and then realizes based on LTE nets
The difference charging of the calling handoff scenario of network and WLAN.And, the realization of the embodiment of the present invention is simple
Effectively, it is low to middle mandate, offline charging is applicable not only to, online charging is can equally be well applied to；
Trusted terminal is applicable not only to, untrusted terminal is can equally be well applied to；It is applicable not only to have built up call
Calling, apply also for not setting up the calling of call；The calling having built up is applicable not only to, is also suitable for
In unfounded calling.
Description of the drawings
Fig. 1 is existing VoLTE and VoWIFI network architecture schematic diagrams；
Fig. 2 is calling switching and charging flow figure of the user from LTE to WLAN in prior art；
Fig. 3 is the flow chart of communication means provided in an embodiment of the present invention；
Flow charts of the Fig. 4 for the embodiment of the present invention one；
Flow charts of the Fig. 5 for the embodiment of the present invention two.
Specific embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, it will be appreciated that described below
Embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 3 is the flow chart of communication means provided in an embodiment of the present invention.As shown in figure 3, the present embodiment
The communication means of offer, is applied to terminal, comprises the following steps：
Step 301：Terminal accesses IMS by the first access network；
Step 302：After terminal switches to the second access network from the first access network, it is right that terminal sends
In words, refresh requests give IMS network side, wherein, in the dialogue, refresh requests carry access network and cut
Configured information is changed, the access network indication message includes the access network before and after access network switching
Type.
Wherein, in talking with, refresh requests can be using existing message, and access network indication message is existing
The extension content of message.
After step 301, before terminal switches to the second access network from the first access network, the party
Method also includes：Terminal sends call requests to IMS network side by the first access network, wherein, institute
State call request and carry present access network type.
Wherein, terminal sends call requests to IMS network side by the first access network, including：Eventually
End sends call requests to IMS network side by the first access network and the P-GW in EPC, its
In, the call request carries present access network type.
In this, terminal sends refresh requests in dialogue and gives IMS network side, including：Terminal passes through second
P-GW in access network and EPC sends refresh requests in dialogue and gives IMS network side, wherein,
In the dialogue, refresh requests carry access network indication message, and the access network switching indicates letter
Breath includes the access network type before and after access network switching.
In this, after the terminal switches to the second access network from the first access network, the terminal is sent out
Before the interior refresh requests of dialogue are sent to IMS network side, the method also includes：The terminal waits initial
Calling enters talking state.
Specifically, the calling that refresh requests correspondence is being conversed in talking with.For the calling set up,
When terminal there occurs that access network switches, actively construction talks with interior refresh requests to terminal；If initial call is also
Conversation state is introduced into, after terminal needs Waiting for Call to enter talking state, then initiates to talk with interior refresh requests.
In this, the first access network is different types of access network with the second access network, wherein, institute
The type for stating access network includes：LTE network, WLAN.
Specifically, if terminal perceives access network type and is switched to WLAN from LTE network, or
LTE network is switched to from WLAN, terminal is actively initiated to carry the right of access network indication message
Refresh requests in words；If terminal perceives access network type and is switched to LTE network from LTE network, or
Person is switched to WLAN from WLAN, then terminal also will not without the need for actively initiating refresh requests in dialogue
Send access network indication message.
Additionally, the embodiment of the present invention also provides a kind of communication means, IMS network side is applied to, including：
P-CSCF in IMS is received to refresh in the dialogue initiated when access network type switches by terminal and is asked
Ask, and refresh requests in the dialogue are sent to into the S-CSCF in IMS or AS, wherein, institute
State refresh requests in dialogue and carry access network indication message, the access network indication message
Including the access network type before and after access network switching；The S-CSCF or AS is according to receiving
Access network type and switching time in dialogue after refresh requests generation carrying access network switching
Accounting request, and the accounting request is sent to CDF or CGF.
Further, the S-CSCF or AS sends the accounting request to CDF or CGF
Afterwards, the method also includes：The CDF or CGF sends charging bill and gives tent center, described
Charging bill includes access network type and every kind of access network type corresponding air time.
In an embodiment, when the terminal is untrusted terminal, the P-CSCF in the IMS connects
Receive in the dialogue initiated when access network type switches by terminal after refresh requests, will refresh in dialogue
Before request is sent to the S-CSCF in IMS or AS, the method also includes：
The P-CSCF obtains currently practical access network type by inquiring about PCRF；
The P-CSCF is inserted according to currently practical access network type in refresh requests in the dialogue
And the access network class before and after the access network switching of the local last time access network type determination for preserving
Type.
Further, the P-CSCF in the IMS is received and is sent out when access network type switches by terminal
In the dialogue for rising before refresh requests, the method also includes：P-CSCF in IMS is received and is sent out by terminal
The call request for rising, wherein, the call request carries present access network type；P-CSCF sends
The call request is to S-CSCF or AS.
In an embodiment, when the terminal is untrusted terminal, the P-CSCF in the IMS connects
After receiving the call request initiated by terminal, the P-CSCF sends the call request to S-CSCF
Or before AS, the method also includes：P-CSCF obtains currently practical access by inquiring about PCRF
Network type；P-CSCF inserts the currently practical access network inquired about and obtain in the call request
Network type.
Additionally, the embodiment of the present invention also provides a kind of communication means, the S-CSCF that is applied in IMS or
Person AS, including：S-CSCF or AS receives refresh requests in dialogue, wherein, brush in the dialogue
New request carries access network indication message, and the access network indication message includes access network
Access network type before and after network switching；S-CSCF or AS is according to refresh requests in the dialogue for receiving
Access network type and the accounting request of switching time after carrying access network switching are generated, and is sent
The accounting request is to CDF or CGF.
Specifically, S-CSCF or AS receive refresh requests in dialogue, and refresh requests in talking with
Access network indication message is carried, the access network indication message includes that access network switches
Access network type in front and back, S-CSCF or AS parsing access network identifications indication message is simultaneously
In the accounting request for be sent to CDF/CGF carry access network switching after access network type and
Switching time.Afterwards, CDF/CGF sends charging bill to tent center, and charging bill includes access
Network type and every kind of access network type corresponding air time, thus, tent center is talked about according to charging
List can realize the differentiated charging for different access networks type.Wherein, for the field of multiple switching
Scape, CDF/CGF statistics, when calculating every kind of access network type and the corresponding call of access network type
Between.
Below by way of specific embodiment, the present invention will be described.
Embodiment one
In the present embodiment, for the access network information that trusted terminal, IMS network are carried using terminal
With access network indication message, with realize based on LTE and WLAN calling switching differentiation
Charging.As shown in figure 4, the present embodiment is comprised the following steps：
Step 401：Terminal use passes through LTE network, through the MME and S-GW, P-GW of EPC
IMS is registered to, so as to follow-up initiating business request；
Step 402：Terminal use initiates call request, such as voice call request, and the call request is passed through
The eNodeB equipment of LTE network, reaches the P-GW of EPC, wherein, carry in call request and access
The network information, access network information include access network type；
Step 403：The call request that terminal use is initiated by P-GW, is forwarded to the P-CSCF of IMS；
Step 404：S-CSCF and AS is arrived in P-CSCF forwarded calls request；
Step 405：After S-CSCF and AS processes call request, access success response is returned；
Step 406：Based on carrier policy, S-CSCF and AS can independently or it is common to
CDF/CGF sends accounting request, wherein, access network type is carried in accounting request；
Step 407：CDF/CGF sends charging response to S-CSCF and AS；
Step 408：P-CSCF gives P-GW forwarded call success responses；
Step 409：To terminal use, now, terminal use can be with for P-GW forwarded calls success response
Voice call is carried out with peer user, wherein, media path is related to：UE-LTE-SGW-PGW-IMS
Deng network element；
Step 410：Terminal use is switched to WLAN (WIFI) overlay area from LTE overlay areas,
Now, terminal use is linked into P-GW through WIFI/ePDG, the calling energy that terminal use has conversed
Enough it is normally carried out, wherein, media path is related to：The network elements such as UE-WIFI-ePDG-PGW-IMS；
Step 411：Terminal use perceives from LTE and is switched to WIFI, for the calling having built up,
Terminal use actively constructs and sends refresh requests in dialogue, such as using session initiation protocol (SIP,
Session Initiation Protocol) UPDATE message that defines, need extension to access in request message
By extending SIP fields or parameter, network switching configured information, the configured information can realize that this refers to
Show information include access network switching before and after access network type, as a example by being switched to WIFI from LTE,
The configured information is, for example, LTE To WIFI, however, the present invention is not limited to this；If initially exhaled
Cry and have not been entered into conversation state, after terminal use waits initial call to set up conversation state, then actively construct
And send refresh requests in dialogue；
Step 412：P-GW transparent transmissions talk with interior refresh requests to P-CSCF；
Step 413：P-CSCF forwardings talk with interior refresh requests to S-CSCF and AS；
Step 414：S-CSCF and AS is processed in dialogue after refresh requests, returns success response, S-CSCF
Need to parse and recognize the access network indication message in dialogue in refresh requests with AS；
Step 415：S-CSCF and AS sends accounting request to CDF/CGF, carries in accounting request
New access network type and switching time, if WLAN is switched to from LTE, now fill in new
Access network type be WLAN, if being switched to LTE from WLAN, now fill in new access
Network type is LTE；
Step 416：CDF/CGF sends charging response to S-CSCF and AS；
Step 417：P-CSCF is to the corresponding success response of refresh requests in P-GW forwarding dialogues；
Step 418：P-GW forwards success response to terminal use, completes this access network type and cuts
Change.
By above-mentioned steps, CDF/CGF can record the access network type of initial call, while note
New access network type and switching time under record handoff scenario, so as to ensure the meter of CDF/CGF outputs
Every kind of access network type and air time are contained in nonsense list, so as to tent center differentiated charging.
Under multiple handoff scenario, CDF/CGF can calculate every kind of access network type and air time.When
When initial call has not been entered into conversation state, if terminal there occurs switching, need to wait initial call to enter
Conversation state, then the refresh requests in dialogue are initiated in active to terminal again.
Embodiment two
In the present embodiment, for untrusted terminal, IMS network thinks the access network letter that terminal is carried
Breath and access network indication message are insincere, based on the local access network information for preserving and pass through
The present access network information that PCRF inquiries are obtained, analysis draw access network indication message, with
Realize the differentiated charging of the calling switching based on LTE and WLAN.In this, with terminal use from LTE
Network switching is to as a example by WLAN, as shown in figure 5, the present embodiment is comprised the following steps：
Step 501：Terminal use passes through LTE network, through the MME and S-GW, P-GW of EPC
It is registered to IMS；
Step 502：Terminal use initiates call request, such as audio call, and the call request is through LTE
The eNodeB equipment of network, reaches the P-GW of EPC, wherein, access network is carried in call request
Information, access network information include access network type；
Step 503：The call request that terminal use is initiated by P-GW, is forwarded to the P-CSCF of IMS；
Step 504：P-CSCF initiates AAR requests to PCRF, and the request is mainly used in user's access
The acquisition of positional information；
Step 505：PCRF gets user access network positional information from P-GW；
Step 506：PCRF returns AAA responses to P-CSCF, returns user and access in response message
Positional information, including access network type, now access for LTE；
Step 507：The user access network positional information obtained from PCRF is inserted into and is exhaled by P-CSCF
In crying request, and S-CSCF and AS is arrived in forwarded call request；
Step 508：After S-CSCF and AS processes call request, access success response is returned；
Step 509：Based on carrier policy, S-CSCF and AS can individually or it is common to
CDF/CGF sends accounting request, and access network type is carried in accounting request；
Step 510：CDF/CGF sends charging response to S-CSCF and AS；
Step 511：P-CSCF gives P-GW forwarded call success responses；
Step 512：To terminal use, now terminal use can be with for P-GW forwarded calls success response
Peer user carries out voice call, wherein, media path is related to：UE-LTE-SGW-PGW-IMS etc.
Network element；
Step 513：Terminal use is switched to WLAN (WIFI) overlay area from LTE overlay areas,
Now terminal use is linked into PGW through WIFI/ePDG, and the calling that terminal use has conversed can
It is normally carried out, wherein, media path is related to：The network elements such as UE-WIFI-ePDG-PGW-IMS；
Step 514：Terminal use perceives from LTE and is switched to WIFI, for the calling having built up,
Terminal use actively constructs and sends the message such as refresh requests in dialogue, such as UPDATE, in dialogue
Need to extend access network indication message in refresh requests, the configured information can be by extending SIP
Field/parameter realizes that the configured information includes the access network type before and after access network switching；If
Initial call has not been entered into conversation state, after terminal use waits initial call to set up conversation state, then leads
Dynamic construction simultaneously sends refresh requests in dialogue；
Step 515：P-GW transparent transmissions talk with interior refresh requests to P-CSCF；
Step 516：P-CSCF initiates AAR requests to PCRF, and the request is mainly used in obtaining user
Accessing position information；
Step 517：PCRF gets user's accessing position information from P-GW；
Step 518：PCRF returns AAA responses to P-CSCF, returns user and connect in the response message
Enter positional information, including access network type, now access for WLAN；
Step 519：The access network positional information of the local initial call for preserving of P-CSCF analyses and from
The present access network positional information that PCRF is obtained, constructs access network indication message, and by structure
Refresh requests in the access network indication message insertion dialogue made, and forward refresh requests in dialogue to arrive
S-CSCF and AS；
Step 520：S-CSCF and AS is processed in dialogue after refresh requests, returns success response, S-CSCF
Need to parse and recognize the access network indication message in dialogue in refresh requests with AS；
Step 521：S-CSCF and AS sends accounting request to CDF/CGF, takes in the accounting request
With new access network type and switching time；If being switched to WLAN from LTE, now fill in
New access network type is WLAN, if being switched to LTE from WLAN, now fills in new connecing
Enter network type for LTE；
Step 522：CDF/CGF sends charging response to S-CSCF and AS；
Step 523：P-CSCF forwards success response to P-GW；
Step 524：P-GW forwards success response to terminal use, completes this switching.
By above-mentioned steps, CDF/CGF can record the access network type of initial call, while note
New access network type and switching time under record handoff scenario, so that the meter of CDF/CGF outputs
Every kind of access network type and air time are contained in nonsense list, so as to tent center differentiated charging.
For multiple handoff scenario, terminal can repeatedly send brush in the dialogue for carrying access network indication message
It is new to ask.
In sum, in embodiments of the present invention, when access network type switches, terminal is actively
Refresh requests in dialogue are sent, is switched so that IMS perceives access network type, it is achieved thereby that
Difference charging based on the calling handoff scenario of LTE network and WLAN.The embodiment of the present invention is not only fitted
For offline charging, online charging is can equally be well applied to；Trusted terminal is applicable not only to, is equally also suitable
In untrusted terminal；Stable state call scenario is applicable not only to, unstable state call scenario is can equally be well applied to.
Meanwhile, the embodiment of the present invention also supports multiple handoff scenario.
Additionally, the embodiment of the present invention also provides a kind of terminal, including：Communication module, for passing through first
Access network accesses IMS；Sending module, for switching to second access from the first access network when terminal
After network, send refresh requests in dialogue and give IMS network side, wherein, refresh requests in the dialogue
Access network indication message is carried, the access network indication message includes that access network switches
Access network type in front and back.
Further, the sending module, is additionally operable to access by the first access network in communication module
After IMS, before terminal switches to the second access network from the first access network, by the first access network
Network sends call requests to IMS network side, wherein, the call request carries present access network class
Type.
Wherein, the first access network and the second access network are different types of access network, wherein, institute
The type for stating access network includes：LTE network, WLAN.
In practical application, communication module and sending module are, for example, that emitter etc. has message transmission capability
Communication device.However, the present invention is not limited to this.In addition, with regard to the concrete process of above-mentioned terminal
Flow process is with described in said method, therefore repeats no more in this.
Additionally, the embodiment of the present invention also provides a kind of communication system, IMS network side is applied to, including：
P-CSCF and S-CSCF or AS；The P-CSCF, for receiving by terminal in access network
Refresh requests in the dialogue initiated when type switches, and will in dialogue refresh requests be sent to S-CSCF or
Person AS, wherein, in the dialogue, refresh requests carry access network indication message, the access
Network switching configured information includes the access network type before and after access network switching；The S-CSCF or
Person AS, for generating the access network carried after access network switching according to refresh requests in the dialogue for receiving
Network type and the accounting request of switching time, and the accounting request is sent to CDF or CGF.
Further, the system also includes：CDF or CGF, for sending charging bill to tent
Center, when the charging bill includes access network type and the corresponding call of every kind of access network type
Between.
Additionally, the embodiment of the present invention also provides a kind of communicator, the S-CSCF that is applied in IMS or
Person AS, including：Receiver module, for receiving refresh requests in dialogue, wherein, brush in the dialogue
New request carries access network indication message, and the access network indication message includes access network
Access network type before and after network switching；Sending module, for according to refresh requests life in the dialogue for receiving
Into access network type and the accounting request of switching time after carrying access network switching, and send institute
Accounting request is stated to CDF or CGF.
In practical application, receiver module is, for example, the communication with information receiving ability such as receptor unit
Part, sending module are, for example, the communication devices with message transmission capability such as emitter.However, of the invention
This is not limited.
Additionally, with regard to said system and device concrete handling process with described in said method, therefore in this not
Repeat again.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.This
It is bright to be not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description
Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications,
These changes and improvements are both fallen within scope of the claimed invention.
Claims (18)
1. a kind of communication means, is applied to terminal, it is characterised in that include：
Terminal passes through the first access network access network Protocol IP Multimedia subsystem network IMS；
After the terminal switches to the second access network from the first access network, the terminal sends dialogue
Interior refresh requests give IMS network side, wherein, in the dialogue, refresh requests carry access network switching
Configured information, the access network indication message include the access network class before and after access network switching
Type.
2. the method for claim 1, it is characterised in that the terminal passes through the first access network
After network accesses IMS, before the terminal switches to the second access network from the first access network, also
Including：The terminal sends call requests to IMS network side by the first access network, wherein, institute
State call request and carry present access network type.
3. method as claimed in claim 2, it is characterised in that the terminal passes through the first access network
Network sends call requests to IMS network side, including：
The terminal passes through the first access network and the public data network gateway in packet-based core networks EPC
P-GW sends call requests to IMS network side, wherein, the call request carries present access network
Type.
4. the method for claim 1, it is characterised in that the terminal sends in dialogue and refreshes
Ask to give IMS network side, including：
The terminal passes through the second access network and the P-GW in EPC sends refresh requests in dialogue
IMS network side is given, wherein, in the dialogue, refresh requests carry access network indication message,
The access network indication message includes the access network type before and after access network switching.
5. the method for claim 1, it is characterised in that the terminal is from the first access network
After switching to the second access network, the terminal send in dialogue refresh requests to IMS network side it
Before, also include：The terminal waits initial call to enter talking state.
6. the method for claim 1, it is characterised in that first access network with it is described
Second access network is different types of access network, wherein, the type of the access network includes：It is long
Phase evolution LTE network, WLAN WLAN.
7. a kind of terminal, it is characterised in that include：
Communication module, for accessing IMS by the first access network；
Sending module, for, after terminal switches to the second access network from the first access network, it is right to send
In words, refresh requests give IMS network side, wherein, in the dialogue, refresh requests carry access network and cut
Access network indication message is changed, before the access network indication message includes access network switching
Access network type afterwards.
8. terminal as claimed in claim 7, it is characterised in that the sending module, is additionally operable to
After the communication module accesses IMS by the first access network, the terminal is from the first access network
Before switching to the second access network, IMS network side is sent call requests to by the first access network,
Wherein, the call request carries present access network type.
9. terminal as claimed in claim 7, it is characterised in that first access network with it is described
Second access network is different types of access network, wherein, the type of the access network includes：LTE
Network, WLAN.
10. a kind of communication means, is applied to procotol IP Multimedia System network IMS network side,
Characterized in that, including：
Proxy call conversation control function entity P-CSCF in IMS is received by terminal in access network class
Refresh requests in the dialogue that type is initiated when switching, and refresh requests in the dialogue are sent in IMS
Service call session control function entity S-CSCF or application server AS, wherein, it is described right
In words, refresh requests carry access network indication message, and the access network indication message includes
Access network type before and after access network switching；
The S-CSCF or AS generates carrying access network according to refresh requests in the dialogue for receiving and cuts
Access network type and the accounting request of switching time after changing, and the accounting request is sent to charging
Data function entity CDF or charging gateway function body CGF.
11. methods as claimed in claim 10, it is characterised in that the S-CSCF or AS
After the accounting request is sent to CDF or CGF, also include：The CDF or CGF sends out
Charging bill is sent to include access network type and every kind of access network to tent center, the charging bill
The type corresponding air time.
12. methods as claimed in claim 10, it is characterised in that when the terminal is untrusted end
During end, the P-CSCF in the IMS receives the dialogue initiated when access network type switches by terminal
After interior refresh requests, before the S-CSCF that refresh requests in dialogue are sent in IMS or AS,
Also include：
The P-CSCF obtains currently practical access by query strategy charging regulation function entity PCRF
Network type；
The P-CSCF is inserted according to currently practical access network type in refresh requests in the dialogue
And the access network class before and after the access network switching of the local last time access network type determination for preserving
Type.
13. methods as claimed in claim 10, it is characterised in that the P-CSCF in the IMS
Receive in the dialogue initiated when access network type switches by terminal before refresh requests, also include：
P-CSCF in the IMS receives the call request initiated by terminal, wherein, the calling please
Seek carrying present access network type；
The P-CSCF sends the call request to S-CSCF or AS.
14. methods as claimed in claim 13, it is characterised in that when the terminal is untrusted end
During end, after the P-CSCF in the IMS receives the call request initiated by terminal, the P-CSCF
Before the call request is sent to S-CSCF or AS, also include：
The P-CSCF obtains currently practical access network type by inquiring about PCRF；
The P-CSCF inserts the currently practical access network inquired about and obtain in the call request
Type.
A kind of 15. communication systems, are applied to IMS network side, it is characterised in that include：P-CSCF
And S-CSCF or AS；
The P-CSCF, brushes for receiving in the dialogue initiated when access network type switches by terminal
It is new to ask, and refresh requests in dialogue are sent to into S-CSCF or AS, wherein, in the dialogue
Refresh requests carry access network indication message, and the access network indication message includes accessing
Access network type before and after network switching；
The S-CSCF or AS, accesses for generating to carry according to refresh requests in the dialogue for receiving
Access network type and the accounting request of switching time after network switching, and send the accounting request
To CDF or CGF.
16. systems as claimed in claim 15, it is characterised in that also include：CDF or CGF,
Tent center is given for sending charging bill, the charging bill includes access network type and every kind of connects
Enter the network type corresponding air time.
A kind of 17. communication means, the S-CSCF being applied in IMS or AS, it is characterised in that
Including：
S-CSCF or AS receives refresh requests in dialogue, wherein, in the dialogue, refresh requests are taken
Band access network indication message, before the access network indication message includes access network switching
Access network type afterwards；
The S-CSCF or AS generates carrying access network according to refresh requests in the dialogue for receiving and cuts
Access network type and the accounting request of switching time after changing, and the accounting request is sent to CDF
Or CGF.
A kind of 18. communicators, the S-CSCF being applied in IMS or AS, it is characterised in that
Including：
Receiver module, for receiving refresh requests in dialogue, wherein, in the dialogue, refresh requests are carried
Access network indication message, before and after the access network indication message includes access network switching
Access network type；
Sending module, carries after access network switching for being generated according to refresh requests in the dialogue for receiving
Access network type and the accounting request of switching time, and send the accounting request to CDF or
CGF。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628624.2A CN106559769B (en) | 2015-09-28 | 2015-09-28 | Communication method, device and terminal |
| PCT/CN2016/088213 WO2017054542A1 (en) | 2015-09-28 | 2016-07-01 | Communication method and apparatus, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628624.2A CN106559769B (en) | 2015-09-28 | 2015-09-28 | Communication method, device and terminal |
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| CN106559769A true CN106559769A (en) | 2017-04-05 |
| CN106559769B CN106559769B (en) | 2021-06-29 |
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ID=58416630
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510628624.2A Active CN106559769B (en) | 2015-09-28 | 2015-09-28 | Communication method, device and terminal |
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| Country | Link |
|---|---|
| CN (1) | CN106559769B (en) |
| WO (1) | WO2017054542A1 (en) |
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| CN115087048B (en) * | 2021-03-10 | 2023-10-31 | 北京小米移动软件有限公司 | Communication method, device and medium |
| CN117395161A (en) * | 2022-07-04 | 2024-01-12 | 大唐移动通信设备有限公司 | Layer two statistic transmission method, network device, device and storage medium |
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Also Published As
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| WO2017054542A1 (en) | 2017-04-06 |
| CN106559769B (en) | 2021-06-29 |
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