CN101068215A - Method, device and system for optimizing media protocol - Google Patents
Method, device and system for optimizing media protocol Download PDFInfo
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- CN101068215A CN101068215A CNA2007101235324A CN200710123532A CN101068215A CN 101068215 A CN101068215 A CN 101068215A CN A2007101235324 A CNA2007101235324 A CN A2007101235324A CN 200710123532 A CN200710123532 A CN 200710123532A CN 101068215 A CN101068215 A CN 101068215A
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Abstract
A method for optimizing media consultation includes receiving session request message with ANAT information enabling to replace network address type by network side, selecting IP address satisfying with requirement from ANAT information by network side according to IP address support ability of network entity, carrying selected IP address in session request message and retransmitting carried IP address to called terminal.
Description
Technical field
The present invention relates to the communications field, particularly relate to method, the Apparatus and system of optimizing media negotiation.
Background technology
There are two big class, IPv4 address and IPv6 addresses the IP address at present.IPv6 is the Internet Protocol next generation that IETF works out.Present network based on IPv4 will progressively carry out the transition to the network based on IPv6.But because the extensive use of IPv4 at present, transition will be a progressive process.
The IPv4 network in IPv6 network evolution process, can long-term existence the single stack terminal/network of IPv4, the single stack terminal/network of IPv6 and terminal/network coexisted situation of supporting the two stacks of IPv4v6 simultaneously.For the network of IPv4v6 coexistence, when the employed IP address version of each terminal that relates in same business is inconsistent, generally solve at present by inserting transfer gateway TrGW (Translation Gateway) reference address type.
If can make full use of two stack capabilities of two stack terminal/networks, the address transition in the time of can reducing the IPv4v6 intercommunication in the network improves communication quality.RFC4091, RFC4092 have defined alternative type of network address ANAT (the Alternative Network Address Types) ability of two stack terminals.Medium IP address class type between the terminal during consulting session, decision adopt the IP address of which kind of version to finish the intercommunication of medium aspect, to avoid carrying out address transition as far as possible.Concrete negotiations process comprises the following steps: referring to shown in Figure 1
When 1, the two stack terminal UE 1 of Calling Side send conversation request, use the SDP grouping to carry two Media Streams, one is the IPv4 address, and one is the IPv6 address; Promptly carry IPv4 and the IPv6 address of UE1 simultaneously and carry out media negotiation.
2, after terminal called UE2 received this conversation request, owing to oneself only support the IPv4 address, decision used the IPv4 address to set up session, so put 0 with the m of IPv6 Media Stream is capable, returned response.
Even terminal called UE2 is single stack terminal like this, no matter it is IPv4 or IPv6, can both select an address, set up medium and connect.
The inventor finds in the invention process: in the ANAT negotiations process, do not consider the IP address tenability of network entity.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system of optimizing media negotiation, in the ANAT negotiations process, considers the IP address tenability of network entity.
A kind of method of optimizing media negotiation of the embodiment of the invention comprises the following steps: that network side receives conversation request message, carries alternative type of network address ANAT information in this message; Network side is according to the IP address tenability of network entity, selects the IP address that meets the demands from ANAT information, and selected IP address is carried in the conversation request message, transmits to terminal called.
A kind of network entity of the embodiment of the invention comprises: preserve the unit, the IP address tenability that is used to preserve network entity; Receiving element is used to receive conversation request message, carries ANAT information in this message; Selected cell is used for according to the IP address tenability of preserving the network entity of preserving the unit, selects the IP address that meets the demands in the ANAT information from the conversation request message that receiving element is received; Retransmission unit is used for the IP address that selected cell is selected and is carried on conversation request message, transmits to terminal called.
A kind of system that optimizes media negotiation of the embodiment of the invention comprises: two stack calling terminals are used to send the conversation request message that carries ANAT information; The network entity of network side, be used to receive the conversation request message that two stack calling terminals are sent, and, from ANAT information, select the IP address that meets the demands, and selected IP address is carried in the conversation request message sends according to the IP address tenability of the network entity that obtains; Terminal called is used to receive the conversation request message that network entity is sent.
In the embodiment of the invention, because the IP address tenability that network side has been preserved network entity in advance, when receiving conversation request message (carrying ANAT information), can be according to the IP address tenability of network entity, the IP address that selection meets the demands from ANAT information, and selected IP address is carried in the conversation request message, transmit to terminal called.Afterwards, terminal called can be finished conversation switching according to the IP address of carrying in the conversation request message.
Description of drawings
Fig. 1 consults flow chart for existing ANAT;
Fig. 2 is a kind of method step flow chart of optimizing media negotiation of the embodiment of the invention;
Fig. 3 is the structural representation of network entity of the network side of the embodiment of the invention;
Fig. 4 be the optimization calling and called terminal of the embodiment of the invention end-to-end between the method step flow chart of media negotiation;
Fig. 5 is known the flow chart of the IP address tenability of terminal for network entity pass-through mode a in the embodiment of the invention;
Fig. 6 is known the flow chart of the IP address tenability of terminal for the network entity pass-through mode b of the embodiment of the invention;
Fig. 7 is known the flow chart of the IP address tenability of terminal for the network entity pass-through mode c of the embodiment of the invention;
Fig. 8 is the flow chart of one embodiment of the invention;
Fig. 9 is the flow chart of another embodiment of the present invention;
Figure 10 is a network media negotiation method flow chart of steps between the optimization calling and called of the embodiment of the invention;
Figure 11 is the flow chart of another embodiment of the present invention;
Figure 12 is the flow chart of another embodiment of the present invention.
Embodiment
One, in the ANAT negotiations process, consider the IP address tenability of network entity, the embodiment of the invention provides a kind of method of optimizing media negotiation, referring to shown in Figure 2, comprises following key step:
S1, network side receive conversation request message, carry alternative type of network address ANAT information in this message.
Described network side receives the network entity of conversation request message, includes but not limited to P-CSCF, S-CSCF or IBCF in the IMS network.
S2, network side select the IP address that meets the demands according to the IP address tenability of network entity from ANAT information.
The IP address tenability of described network entity comprises: the IP address tenability of terminal called, and/or the IP address tenability of the network entity between the calling and called terminal.
S3, network side are carried on selected IP address in the conversation request message, transmit to terminal called.
Two, the embodiment of the invention also provides a kind of network entity (including but not limited to P-CSCF, S-CSCF or IBCF in the IMS network) of network side, and referring to shown in Figure 3, it comprises: preserve unit, receiving element, selected cell and retransmission unit; Further also can comprise acquiring unit.Acquiring unit is used to obtain the IP address tenability of terminal, and/or the IP address tenability of the network entity between the calling and called terminal, and the IP address tenability that obtains is sent to the preservation unit.Preserve the unit, the IP address tenability that is used to preserve network entity; Receiving element is used to receive conversation request message, carries ANAT information in this message; Selected cell is used for according to the IP address tenability of preserving the network entity of preserving the unit, selects the IP address that meets the demands in the ANAT information from the conversation request message that receiving element is received; Retransmission unit is used for the IP address that selected cell is selected and is carried on conversation request message, transmits to terminal called.
Three, the embodiment of the invention also provides a kind of system that optimizes media negotiation, comprising: two stack calling terminals are used to send the conversation request message that carries ANAT information; The network entity of network side, be used to receive the conversation request message that two stack calling terminals are sent, and, from ANAT information, select the IP address that meets the demands, and selected IP address is carried in the conversation request message sends according to the IP address tenability of the network entity that obtains; Terminal called is used to receive the conversation request message that network entity is sent.
One (1), in order to shorten call delay, and improve service quality, the method for the embodiment of the invention referring to shown in Figure 4, comprises following key step:
S11, network side receive conversation request message, carry alternative type of network address ANAT information in this message.
S12, network side select the IP address that meets the demands according to the IP address tenability of terminal called from ANAT information.
Also can comprise in this step: network side is from according to the selected IP address of the IP address tenability of terminal called, further selects network entity between the calling and called terminal to support the IP address of version, and with this IP address as the IP address that meets the demands.
S13, network side are carried on selected IP address in the conversation request message, transmit to terminal called.
Before the above-mentioned steps S11, can be in the IMS registration process (but being not limited in the IMS registration process), bring network side by terminal with oneself IP address tenability and (include but not limited to the P-CSCF (proxy call conversation control function entity Proxy-Call Session Control Function) in the IMS network, S-CSCF (service call session control function entity Serving-Call Session Control Function) or IBCF (Interconnection Border Control Function entity Interconnection Border Control Function) are by the IP address tenability of network side preservation terminal.When the subsequent voice calls handshaking procedure, conversation request message arrives network side like this, and network side can anticipation go out the IP address tenability of terminal called, and adjusts accordingly, and for example: termination ANAT consults, the IP address version that selected terminal called is supported.
Network side can be known the IP address tenability of terminal by following several modes:
Mode a, terminal can be when CSCF send login request message, carry the IP address of oneself supporting version according to its own IP address tenability at Contact header field,, then carry the address that double bounce oneself is supported if this terminal is two stack terminals, one jumping is the IPv4 address, and a jumping is the IPv6 address; If this terminal is single stack terminal, then carry the IP address of a version of oneself supporting.After network side is received login request message, preserve the IP address of carrying in the Contact header field, and two stacks of this terminal support of respective record or support single stack.
With this terminal is two stack terminals, and is example by the IP address tenability that S-CSCF preserves this terminal, and referring to shown in Figure 5, registration process comprises the following steps:
1 to 3, UE sends login request message, is forwarded to S-CSCF via P-CSCF and I-CSCF;
4, S-CSCF preserves the double bounce IP address of carrying in the Contact header field, and writes down this terminal and support two stacks;
5 to 7, return registration reply message along the path of initiating registration.
Mode b, if terminal be pair stack terminals, then can pass through twice registration process, to IPv4, the IPv6 address tenability of network side registration oneself, network side obtains the IP address tenability of this terminal according to the version of the IP address of carrying respectively in two login request message respectively.
The IP address tenability of preserving this terminal with S-CSCF is an example, and referring to shown in Figure 6, registration process comprises the following steps:
1 to 3, UE sends login request message for the first time, carries the IPv4 address of this UE in the Contact header field of this message; This message is forwarded to S-CSCF via P-CSCF and I-CSCF;
4, S-CSCF preserves the IPv4 address of carrying in the Contact header field, and writes down this terminal and support IPv4;
5 to 7, return registration reply message along the path of initiating registration;
8 to 10, UE sends login request message message for the second time, carries the IPv6 address of this UE in the Contact header field of this message; This message is forwarded to S-CSCF via P-CSCF and I-CSCF;
11, S-CSCF preserves the IPv6 address of carrying in the Contact header field, and writes down this terminal and support IPv6;
12 to 14, return registration reply message along the path of initiating registration.
Through twice registration process, S-CSCF has preserved the IPv4 address and the IPv6 address of this terminal, and has write down this terminal and supported two stacks.
Mode c, the IP address version of coming carried terminal to support by spread F eatureTag parameter in the Contact header field of login request message, thereby the IP address version with this terminal support in registration process reports network side, and network side obtains the IP address tenability of this terminal according to the version information that carries in the login request message.
With this terminal is two stack terminals, and is example by the IP address tenability that S-CSCF preserves this terminal, and referring to shown in Figure 7, registration process comprises the following steps:
1 to 3, UE sends the login request message of IPv4 address, carries the IPv4 address of this UE in the Contact header field of this message, and adds spreading parameter+ipver=" 4,6 " in the Contact header field of this login request message; This login request message is forwarded to S-CSCF via P-CSCF and I-CSCF;
4, S-CSCF preserves the IPv4 address of carrying in the Contact header field, and learns the IP address of this terminal support IPv4 and two versions of IPv6 according to the parameter+ipver=that carries in the Contact header field " 4,6 ", and writes down this terminal and support two stacks;
5 to 7, return registration reply message along the path of initiating registration.
Two (1),, and improve service quality in order to shorten call delay, in the network entity of the network side of the embodiment of the invention,
Described acquiring unit specifically can obtain the IP address tenability of terminal: mode a by one of following manner, terminal can be when CSCF sends login request message, carry the IP address of oneself supporting version at Contact header field according to its own IP address tenability, if this terminal is two stack terminals, then carry the address that double bounce oneself is supported, one jumping is the IPv4 address, and a jumping is the IPv6 address; If this terminal is single stack terminal, then carry the IP address of a version of oneself supporting.After network side is received login request message, preserve the IP address of carrying in the Contact header field, and two stacks of this terminal support of respective record or support single stack.Mode b, if terminal be pair stack terminals, then can pass through twice registration process, to IPv4, the IPv6 address tenability of network side registration oneself, network side obtains the IP address tenability of this terminal according to the version of the IP address of carrying respectively in two login request message respectively.Mode c, the IP address version of coming carried terminal to support by spread F eatureTag parameter in the Contact header field of login request message, thereby the IP address version with this terminal support in registration process reports network side, and network side obtains the IP address tenability of this terminal according to the version information that carries in the login request message.
Described preservation unit has been preserved the IP address tenability of the terminal that acquiring unit obtains in advance.
Initiate ANAT when consulting when two stack terminals to terminal called, described receiving element can receive the conversation request message that carries ANAT information.
After receiving conversation request message, network side is not directly transmitted this conversation request message to terminal called, described selected cell is selected the IP address that meets the demands according to the IP address tenability of preserving the terminal called of preserving in the unit in the ANAT information from the conversation request message that receiving element is received at this moment.Concrete, the common factor version of the version of the IP address of carrying in the IP address version that can obtain the terminal called support and the ANAT information, and from ANAT information, choose the IP address that whole IP address conduct of this common factor version correspondence meets the demands; Perhaps, from ANAT information, choose the part IP address (can select an IP address) of this common factor version correspondence as the IP address that meets the demands; Perhaps, from the IP address of selecting according to the IP address tenability of terminal called (the part IP address of whole IP address of common factor version correspondence or common factor version correspondence), further select network entity between the calling and called terminal to support the IP address of version, and with this IP address as the IP address that meets the demands.
Afterwards, the retransmission unit IP address that selected cell is selected is carried in the conversation request message, transmits to terminal called.
Three (1),, and improve service quality in order to shorten call delay, in the system of the optimization media negotiation of the embodiment of the invention,
Two stack calling terminals send the conversation request message that carries ANAT information, and this conversation request message is routed to described network side.
After the network entity of network side is received this conversation request message,, from ANAT information, select the IP address that meets the demands, and selected IP address is carried in the conversation request message sends according to the IP address tenability of the terminal called that obtains; Described network side also can be from the IP address of selecting according to the IP address tenability of terminal called, further select network entity between the calling and called terminal to support the IP address of version, and be carried in the conversation request message as the IP address that meets the demands with this IP address and send.
Wherein, also comprise in the network entity of network side: acquiring unit, this unit specifically can obtain the IP address tenability of terminal: mode a by one of following manner, terminal can be when CSCF sends login request message, carry the IP address of oneself supporting version at Contact header field according to its own IP address tenability, if this terminal is two stack terminals, then carry the address that double bounce oneself is supported, a jumping is the IPv4 address, and a jumping is the IPv6 address; If this terminal is single stack terminal, then carry the IP address of a version of oneself supporting.After network side is received login request message, preserve the IP address of carrying in the Contact header field, and two stacks of this terminal support of respective record or support single stack.Mode b, if terminal be pair stack terminals, then can pass through twice registration process, to IPv4, the IPv6 address tenability of network side registration oneself, network side obtains the IP address tenability of this terminal according to the version of the IP address of carrying respectively in two login request message respectively.Mode c, the IP address version of coming carried terminal to support by spread F eatureTag parameter in the Contact header field of login request message, thereby the IP address version with this terminal support in registration process reports network side, and network side obtains the IP address tenability of this terminal according to the version information that carries in the login request message.
Described terminal called is received the conversation request message of network side transmitted, and can therefrom obtain through network side preferred IP address from ANAT information; Terminal called can this IP address and the calling terminal session that continues afterwards.
Exist the ANAT negotiation information in the conversation request that embodiment 1, calling terminal are initiated, S-CSCF judges that terminal called is single stack terminal (adopting aforesaid way a or mode c registration), termination ANAT consults, and selects the consistent IP address of IP address version a kind of and the terminal called support to communicate from the ANAT negotiation information.Referring to shown in Figure 8, comprise the following steps:
1 to 2, via I-CSCF, S-CSCF receives conversation request, finds to exist in this request the ANAT negotiation information, and promptly calling terminal has carried IPv4 and the IPv6 address of oneself simultaneously, initiates ANAT to terminal called and consults.
3, obtain the mode of the IP address tenability of terminal based on above-mentioned 3 kinds of CSCF, S-CSCF has preserved the IP address tenability information of terminal called, present embodiment supposition terminal called is single stack terminal and the IP address of only supporting the IPv4 version, and then the S-CSCF ANAT that terminates voluntarily consults.
4 to 5, S-CSCF selects the IPv4 address and the terminal called of calling terminal to communicate from the ANAT negotiation information.
Present embodiment can once be finished call proceeding, needn't make repeated attempts as prior art.
Exist the ANAT negotiation information in the conversation request that embodiment 2, calling terminal are initiated; Terminal called is two stack terminals, and has registered two IP addresses of IPv4, IPv6 (aforesaid way a or mode b).Comprise the following steps:
1 to 2, via I-CSCF, S-CSCF receives conversation request, finds to exist in this request the ANAT negotiation information, and promptly calling terminal has carried IPv4 and the IPv6 address of oneself simultaneously, initiates ANAT to terminal called and consults.
3, based on aforesaid way a or mode b, S-CSCF has preserved the IP address tenability information of terminal called.Because two IP address registrations of terminal called are identical user ID (having identical public subscriber identification IMPU and private user identity IMPI), S-CSCF can think in view of the above that two IP addresses belong to same terminal called.
4, S-CSCF termination ANAT consults, and selects a kind of more excellent IP address to communicate.Wherein, select a kind of more excellent IP address to comprise: optional one; Perhaps S-CSCF further selects network entity between the calling and called terminal to support the IP address (detailed process is referring to aftermentioned) of version, and with this IP address as more excellent IP address; Perhaps select a kind of more excellent IP address according to called subscriber's preference and terminal current state.
Exist the ANAT negotiation information in the conversation request that embodiment 3, calling terminal are initiated; Terminal called is two stack terminals, and has registered two IP addresses of IPv4, IPv6 (aforesaid way a or mode b); Conversation request arrives terminal called by the fbrking mode.Referring to shown in Figure 9, comprise the following steps:
1 to 2, via I-CSCF, S-CSCF receives conversation request, finds to exist in this request the ANAT negotiation information, and promptly calling terminal has carried IPv4 and the IPv6 address of oneself simultaneously, initiates ANAT to terminal called and consults.
3, based on aforesaid way a or mode b, S-CSCF has preserved the IP address tenability information of terminal called.Because terminal called has been registered two IP addresses of IPv4, IPv6, S-CSCF can not do any identification inspection, thinks that two IP addresses of registration belong to two different single stack terminal calleds.Forking will take place afterwards.
4, S-CSCF termination ANAT consults, and carries the IPv4 address in the ANAT negotiation information in this conversation request, and transmits to single stack terminal called of supporting the IPv4 address.
5, S-CSCF termination ANAT consults, and carries the IPv6 address in the ANAT negotiation information in this conversation request, and transmits to single stack terminal called of supporting the IPv6 address.
Annotate: step 4 and 5 does not have sequencing.
6, because in fact two addresses belong to same terminal called, two conversation request branches of forking will arrive same terminal called.Select a kind of IP address (as the IPv6 address) by this terminal called oneself then, and echo reply message.
7, the terminal called conversation request of another branch that terminates.
Exist the ANAT negotiation information in the conversation request that embodiment 4, calling terminal are initiated; Terminal called is two stack terminals, and the IP address (aforesaid way c) of having registered a kind of version.
Then when conversation request arrived S-CSCF, the extend information that S-CSCF carries when registering by terminal called this terminal called as can be known was two stack terminals.The S-CSCF ANAT that can terminate consults, and selects a kind of more excellent IP address to communicate.Wherein, select a kind of more excellent IP address to comprise: optional one; Perhaps S-CSCF further selects network entity between the calling and called terminal to support the IP address (detailed process is referring to aftermentioned) of version, and with this IP address as more excellent IP address; Perhaps select a kind of more excellent IP address according to called subscriber's preference and terminal current state.
One (2), in order to realize paying the utmost attention to the IP address tenability of the network entity between the calling and called terminal, the method for the embodiment of the invention referring to shown in Figure 10, comprises following key step:
S21, network side are received conversation request message, carry alternative type of network address ANAT information in this message.
S22, network side select the IP address that meets the demands according to the IP address tenability of the network entity between the calling and called terminal from ANAT information.
In this step, network side also can be from the IP address of selecting according to the IP address tenability of the network entity between the calling and called terminal, further select terminal called to support the IP address of version according to the IP address tenability (obtain manner is referring to aforementioned) of terminal called, and with this IP address as the IP address that meets the demands.
S23, network side are carried on selected IP address in the conversation request message, transmit to terminal called.
Wherein, the network side mode that obtains the IP address tenability of the network entity between the calling and called terminal comprises one of following:
Mode d, in the IP of network side configuration network side and adjacent networks thereof address version information, network side is according to the IP address tenability of network entity between the IP address version information acquisition calling and called terminal of configuration;
Mode e, network side are initiated the DNS inquiry in the process of session that continues, according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of next jumping in the session path that inquires.
Two (2), in order to realize paying the utmost attention to the IP address tenability of the network entity between the calling and called terminal, in the network entity of the network side of the embodiment of the invention,
Described acquiring unit specifically can be by the IP address tenability of the network entity between one of following manner acquisition calling and called terminal: mode d, in the IP of network side configuration network side and adjacent networks thereof address version information, and network side is according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of configuration; Mode e, network side are initiated the DNS inquiry in the process of session that continues, according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of next jumping in the session path that inquires.
Described preservation unit has been preserved the IP address tenability of the network entity between the calling and called terminal that acquiring unit obtains in advance.
Initiate ANAT when consulting when two stack terminals to terminal called, described receiving element can receive the conversation request message that carries ANAT information.
After receiving conversation request message, network side is not directly transmitted this conversation request message to terminal called, described selected cell is selected the IP address that meets the demands according to the IP address tenability of preserving the network entity between the calling and called terminal of preserving in the unit in the ANAT information from the conversation request message that receiving element is received at this moment.Concrete, can obtain the common factor version of the version of the IP address of carrying in the IP address version of the network entity support between the calling and called terminal and the ANAT information, and whole IP address of choosing this common factor version correspondence from ANAT information is as the IP address that meets the demands; Perhaps, from ANAT information, choose the part IP address (can select an IP address) of this common factor version correspondence as the IP address that meets the demands; Perhaps, from the IP address of selecting according to the IP address tenability of the network entity between the calling and called terminal (the part IP address of whole IP address of common factor version correspondence or common factor version correspondence), further select terminal called to support the IP address of version according to the IP address tenability of terminal called, and with this IP address as the IP address that meets the demands.
Afterwards, the retransmission unit IP address that selected cell is selected is carried in the conversation request message, transmits to terminal called.
Three (2), in order to realize paying the utmost attention to the IP address tenability of the network entity between the calling and called terminal, in the system of the network side of the embodiment of the invention,
Two stack calling terminals send the conversation request message that carries ANAT information, and this conversation request message is routed to described network side.
After the network entity of network side is received this conversation request message, and according to the IP address tenability of the network entity between the calling and called terminal, from ANAT information, select the IP address that meets the demands, and selected IP address is carried in the conversation request message sends; Described network side also can be from the IP address of selecting according to the IP address tenability of the network entity between the calling and called terminal, further select terminal called to support the IP address of version according to the IP address tenability of terminal called, and with this IP address as the IP address that meets the demands.
Also comprise acquiring unit in the network entity of network side, this unit specifically can be by the IP address tenability of the network entity between one of following manner acquisition calling and called terminal: mode d, in the IP of network side configuration network side and adjacent networks thereof address version information, and network side is according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of configuration; Mode e, network side are initiated the DNS inquiry in the process of session that continues, according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of next jumping in the session path that inquires.
Described terminal called is received the conversation request message of network side transmitted, and can therefrom obtain through network side preferred IP address from ANAT information; Terminal called can this IP address and the calling terminal session that continues afterwards.
Below specifically describe by two embodiment.
1, calling UE 1 is initiated the INVITE calling, comprises ANAT and consults, and SDP carries two Media Streams of IPv4 IPv6.
When 2, the INVITE call signaling arrived caller P-CSCF, caller P-CSCF need control Media Stream through own bearer network, so the IP address tenability of this P-CSCF detection bearer network knows that bearer network only supports IPv6.
3, the P-CSCF ANAT that directly terminates only uses IPv6 and terminal called UE to consult.If terminal called is supported IPv6, then can set up carrying, carry out the IP version conversion otherwise need to insert transfer gateway TrGW.
1, calling UE 1 is initiated the INVITE calling, comprises ANAT and consults, and SDP carries two Media Streams of IPv4 IPv6.
When 2, the INVITE call signaling arrived the IBCF of caller network egress, caller IBCF detected the IP address tenability of the called bearer network that docks with oneself, knew bearer network support IPv4 and IPv6; Further, the IP address tenability of IBCF anticipation terminal called UE finds that terminal called UE only supports IPv4.
3, IBCF termination ANAT only uses IPv4 and terminal called UE to consult.
In the embodiment of the invention, network side receives conversation request message, carries alternative type of network address ANAT information in this message in sum; Network side is according to the IP address tenability of network entity, selects the IP address that meets the demands from ANAT information, and selected IP address is carried in the conversation request message, transmits to terminal called.So realized considering the IP address tenability of network entity in the ANAT negotiations process.
Further, calling terminal and do not know the ability of terminal called during initial negotiation in the prior art.If terminal called does not support ANAT to consult, may refuse call request.Calling terminal has to initiate again the conversation request of not being with ANAT to consult, but this moment, calling terminal was not still known the IP address tenability of terminal called, may falsely drop to have selected called unsupported IP address version and initiate a session request.Hold consultation by this mode of attempting one by one, obviously may experience and repeatedly consult just to make the calling and called both sides consult success, cause the increase of call delay and the decline of service quality.
In the embodiment of the invention, because network side has been preserved the IP address tenability of terminal in advance, when receiving conversation request message (carrying ANAT information), can be according to the IP address tenability of terminal called, the IP address that selection meets the demands from ANAT information, and selected IP address is carried in the conversation request message, transmit to terminal called.Afterwards, terminal called can be finished conversation switching according to the IP address of carrying in the conversation request message, the possibility of having avoided experience repeatedly to consult, thus shorten call delay and improve service quality.
Also can be from according to the selected IP address of the IP address tenability of terminal called, further select network entity between the calling and called terminal to support the IP address of version, and with this IP address as the IP address that meets the demands.
If terminal called be two stack terminals, then further select the IP address of the network entity support version between the calling and called terminal after, can guarantee that the whole session Path selection is with a kind of IP version.
If terminal called is single stack terminal, after then further selecting the IP address of the network entity support version between the calling and called terminal, may produce two kinds of situations: if the IP address tenability of the network entity between the calling and called terminal is identical with terminal called, then normally continue and get final product, if the IP address tenability and the terminal called of the network entity between the calling and called terminal are inequality, then can be before the end-to-end negotiation of calling and called, find that network side can't support the negotiation result that calling and called may be reached, thereby termination is consulted as early as possible, insert transfer gateway TrGW, reach the effect of saving network transmission resource and shortening call delay.
Further, in the embodiment of the invention, because the IP address tenability that network side has been preserved the network entity between the calling and called terminal in advance, when receiving conversation request message (carrying ANAT information), can be according to the IP address tenability of the network entity between the calling and called terminal, from ANAT information, select the IP address meet the demands, and selected IP address is carried in the conversation request message, transmit to terminal called.Thereby guarantee that selected IP address can be by the network entity support between the calling and called terminal.
Also can be from the IP address of selecting according to the IP address tenability of the network entity between the calling and called terminal, further select terminal called to support the IP address of version according to the IP address tenability of terminal called, and with this IP address as the IP address that meets the demands.
If the network entity between the calling and called terminal be two stacks, then further select terminal called to support the IP address of version after, can guarantee the whole session Path selection with a kind of IP version, and can avoid the ANAT negotiation.
If the network entity between the calling and called terminal is single stack, terminal called be two stack terminals, then further select terminal called to support the IP address of version after, can guarantee the whole session Path selection with a kind of IP version, and can avoid the ANAT negotiation.
If network entity and terminal called between the calling and called terminal are single stack, after then further selecting terminal called to support the IP address of version, may produce two kinds of situations: if the IP address tenability of terminal called is identical with network entity between the calling and called terminal, then normally continue and get final product, if the IP address tenability and the network entity between the calling and called terminal of terminal called are inequality, then can be before the end-to-end negotiation of calling and called, find that terminal called can't support the IP address tenability of the network entity between the calling and called terminal, thereby termination is consulted as early as possible, insert transfer gateway TrGW, reach the effect of saving network transmission resource and shortening call delay.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1, a kind of method of optimizing media negotiation is characterized in that, comprises the following steps:
Network side receives conversation request message, carries alternative type of network address ANAT information in this message;
Network side is according to the IP address tenability of network entity, selects the IP address that meets the demands from ANAT information, and selected IP address is carried in the conversation request message, transmits to terminal called.
2, the method for claim 1 is characterized in that, described network entity is a terminal called.
3, method as claimed in claim 2 is characterized in that, the mode that network side obtains the IP address tenability of terminal is one of following:
Carry the IP address of all versions of this terminal support in the login request message that mode a, terminal send, network side obtains the IP address tenability of this terminal according to the version of the IP address of carrying in the login request message;
Mode b, if described terminal be pair stack terminals, then this terminal is by twice registration process, register the IPv4 and the IPv6 address of this terminal respectively to network side, network side obtains the IP address tenability of this terminal according to the version of the IP address of carrying respectively in two login request message;
Comprise the parameter of expansion in the login request message that mode c, terminal send, this parameter carries the IP address version that terminal is supported, network side obtains the IP address tenability of this terminal according to the version information that carries in the login request message.
4, method as claimed in claim 3, it is characterized in that, terminal called is single stack terminal and adopts mode a or mode c registration, then when network side is received the conversation request message that two stack calling terminals send, consult and from ANAT information, select terminal called to support the IP address of version to be carried in the conversation request message according to the IP address tenability termination ANAT of the terminal called that obtains, transmit to terminal called.
5, method as claimed in claim 3 is characterized in that, terminal called is for two stack terminals and adopt mode a or mode b registration, and then network side judges that the IP address of two versions of terminal called registration all belongs to this terminal called; When network side is received the conversation request message that two stack calling terminals send, consult and the IP address of selecting a version from ANAT information is carried in the conversation request message according to the IP address tenability termination ANAT of the terminal called that obtains, transmit to terminal called.
6, method as claimed in claim 3, it is characterized in that, terminal called is for two stack terminals and adopt mode a or mode b registration, then when network side is received the conversation request message that two stack calling terminals send, IP address tenability termination ANAT according to the terminal called that obtains consults and initiates bifurcated forking operation, IPv4 in the ANAT information is carried on respectively in the different conversation request message with the IPv6 address, to the terminal called transmission of IP address version correspondence; This terminal called is selected one and is continued from the two-way conversation request message.
7, method as claimed in claim 3, it is characterized in that, terminal called is for two stack terminals and adopt mode c registration, then when network side is received the conversation request message that two stack calling terminals send, consult and the IP address of selecting a version from ANAT information is carried in the conversation request message according to the IP address tenability termination ANAT of the terminal called that obtains, transmit to terminal called.
8, method as claimed in claim 2, it is characterized in that, the IP address that selection meets the demands from ANAT information, be specially: network side is further selected the IP address of the network entity support version between the calling and called terminal according to the IP address tenability of the network entity between the calling and called terminal from the IP address of selecting according to the IP address tenability of terminal called.
9, the method for claim 1 is characterized in that, described network entity is the network entity between the calling and called terminal.
10, method as claimed in claim 9 is characterized in that, it is one of following that the mode that network side obtains the IP address tenability of the network entity between the calling and called terminal comprises:
Mode d, in the IP of network side configuration network side and adjacent networks thereof address version information, network side is according to the IP address tenability of network entity between the IP address version information acquisition calling and called terminal of configuration;
Mode e, network side are initiated the DNS inquiry in the process of session that continues, according to the IP address tenability of the network entity between the IP address version information acquisition calling and called terminal of next jumping in the session path that inquires.
11, method as claimed in claim 9, it is characterized in that, the IP address that selection meets the demands from ANAT information, be specially: network side further selects terminal called to support the IP address of version according to the IP address tenability of terminal called from the IP address of selecting according to the IP address tenability of the network entity between the calling and called terminal.
12, a kind of network entity of network side is characterized in that, comprising:
Preserve the unit, the IP address tenability that is used to preserve network entity;
Receiving element is used to receive conversation request message, carries ANAT information in this message;
Selected cell is used for according to the IP address tenability of preserving the network entity of preserving the unit, selects the IP address that meets the demands in the ANAT information from the conversation request message that receiving element is received;
Retransmission unit is used for the IP address that selected cell is selected and is carried on conversation request message, transmits to terminal called.
13, entity as claimed in claim 12 is characterized in that, the IP address tenability of the network entity that described preservation unit is preserved comprises: the IP address tenability of terminal, and/or the IP address tenability of the network entity between the calling and called terminal.
14, entity as claimed in claim 13, it is characterized in that, also comprise: acquiring unit is used to obtain the IP address tenability of terminal, and/or the IP address tenability of the network entity between the calling and called terminal, and the IP address tenability that obtains sent to the preservation unit.
15, a kind of system that optimizes media negotiation is characterized in that, comprising:
Two stack calling terminals are used to send the conversation request message that carries ANAT information;
The network entity of network side, be used to receive the conversation request message that two stack calling terminals are sent, and, from ANAT information, select the IP address that meets the demands, and selected IP address is carried in the conversation request message sends according to the IP address tenability of the network entity that obtains;
Terminal called is used to receive the conversation request message that network entity is sent.
16, system as claimed in claim 15 is characterized in that, the IP address tenability of the network entity that the network entity of network side obtains comprises: the IP address tenability of terminal, and/or the IP address tenability of the network entity between the calling and called terminal.
17, system as claimed in claim 16 is characterized in that, also comprises in the network entity of network side: acquiring unit is used to obtain the IP address tenability of terminal and/or the IP address tenability of the network entity between the calling and called terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101235324A CN101068215B (en) | 2007-06-29 | 2007-06-29 | Method, device and system for optimizing media protocol |
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|---|---|---|---|
| CN2007101235324A CN101068215B (en) | 2007-06-29 | 2007-06-29 | Method, device and system for optimizing media protocol |
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| CN101068215A true CN101068215A (en) | 2007-11-07 |
| CN101068215B CN101068215B (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101235324A Expired - Fee Related CN101068215B (en) | 2007-06-29 | 2007-06-29 | Method, device and system for optimizing media protocol |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196051A (en) * | 2010-03-03 | 2011-09-21 | 中国移动通信集团公司 | Terminal communication method, system and device |
| CN102487546A (en) * | 2010-12-01 | 2012-06-06 | 中兴通讯股份有限公司 | Registration method of session initiation protocol (SIP) terminal and system thereof |
| CN102835092A (en) * | 2010-03-31 | 2012-12-19 | 高通股份有限公司 | Single and dual internet protocol bearer support |
| CN103166954A (en) * | 2011-12-08 | 2013-06-19 | 财团法人资讯工业策进会 | Communication network system, calling terminal and voice call establishing method thereof |
| CN105915665A (en) * | 2008-10-07 | 2016-08-31 | 奥兰治 | Method for managing a user in a telecommunication network, and associated device |
| CN109040007A (en) * | 2017-06-08 | 2018-12-18 | 阿瓦亚公司 | Alternative network address style (ANAT) coding and media intercommunication |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758649B (en) * | 2004-10-05 | 2010-04-28 | 华为技术有限公司 | Method of interconnected protocol network communicating between different edition network |
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2007
- 2007-06-29 CN CN2007101235324A patent/CN101068215B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915665A (en) * | 2008-10-07 | 2016-08-31 | 奥兰治 | Method for managing a user in a telecommunication network, and associated device |
| CN102196051A (en) * | 2010-03-03 | 2011-09-21 | 中国移动通信集团公司 | Terminal communication method, system and device |
| CN102196051B (en) * | 2010-03-03 | 2014-09-10 | 中国移动通信集团公司 | Terminal communication method, system and device |
| CN102835092A (en) * | 2010-03-31 | 2012-12-19 | 高通股份有限公司 | Single and dual internet protocol bearer support |
| CN102835092B (en) * | 2010-03-31 | 2016-05-25 | 高通股份有限公司 | The method and apparatus of supporting for single and double Internet Protocol carrying |
| CN102487546A (en) * | 2010-12-01 | 2012-06-06 | 中兴通讯股份有限公司 | Registration method of session initiation protocol (SIP) terminal and system thereof |
| CN103166954A (en) * | 2011-12-08 | 2013-06-19 | 财团法人资讯工业策进会 | Communication network system, calling terminal and voice call establishing method thereof |
| US9578180B2 (en) | 2011-12-08 | 2017-02-21 | Institute For Information Industry | Communication network system, calling terminal and voice call establishing method thereof |
| CN109040007A (en) * | 2017-06-08 | 2018-12-18 | 阿瓦亚公司 | Alternative network address style (ANAT) coding and media intercommunication |
| US10904299B2 (en) | 2017-06-08 | 2021-01-26 | Avaya Inc. | Alternative network address type (ANAT) encoding and media interworking |
| CN109040007B (en) * | 2017-06-08 | 2022-02-22 | 阿瓦亚公司 | Method and system for handling Alternative Network Address Type (ANAT) incompatibility |
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|---|---|
| CN101068215B (en) | 2011-09-21 |
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