CN101330426B - IPTV network interconnection architecture and interconnection method - Google Patents
IPTV network interconnection architecture and interconnection method Download PDFInfo
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Abstract
The invention provides an IPTV network interconnection architecture and an interconnection method thereof, which are used for the interconnection of IPTV networks with different service patterns. The IPTV network interconnection architecture comprises a terminal user functional entity, an application functional entity, a content transmission functional entity, and a network functional entity or a transmission functional entity. The network functional entity or the network functional entity further comprises boundary functional entities which are connected with a core transmission functional entity in the network functional entity or the network functional entity, and when the IPTV networks with different service patterns are interconnected, the transmission layer interconnection is realized through the interconnection of the boundary functional entities.
Description
Technical field
The present invention relates to the IPTV network, particularly, relate to IPTV network interconnection architecture and interconnecting method, it is primarily aimed at Non-NGN-Based IPTV network and NGN-Based IPTV network interconnection situation, specifically comprise roaming condition and with third party provider interconnection situation.
Background technology
IPTV is an IPTV, is a kind of broadband cabled television network that utilizes, and integrates multiple technologies such as the Internet, multimedia, communication, and the brand-new technology of the multiple interactive services that comprises Digital Television is provided to the domestic consumer.
Usually, the user can have dual mode to enjoy the IPTV service at home: (1) computer, (2) network machine top box+general television set.One of characteristics of IPTV are exactly to utilize the infrastructure of broadband cabled television network, as main terminal appliance, provide the multiple digital media service that comprises TV programme with domestic television set by internet protocol.Simultaneously, IPTV relates to multiple value-added service, and these value-added services have exceeded the category of conventional telecommunications business, each link that relates to industrial chain, much all relate to cooperation with third party's business partner, therefore, to the internetwork roaming of IPTV and with interaction technique research of third party service provider be very necessary.
The research group of ITU-T-IPTV focus work group (IPTV Focus Group) proposes IPTV system function structure is divided three classes according to the composition and the technology of network:
(1) the Non-NGN-Based IPTV network architecture
(2) NGN-Based IPTV (the not being with IMS) network architecture
(3) NGN-Based IPTV (band IMS) network architecture
In the work document " Working Document:IPTV Architecture " of the IPTV of ITU-T Focus Group, provided the Organization Chart of three class IPTV architectural framework correspondences, wherein, accompanying drawing 1 is the reduced graph of the figure8-2 in this work document, it has described the IPTV function structure of Non-NGN-BASED, accompanying drawing 2 is the reduced graphs of the figure8-3 in this work document, it has described the IPTV function structure (not being with IMS) of NGN-BASED, accompanying drawing 3 is the reduced graphs of the figure8-4 in this work document, and it has described the IPTV function structure (band IMS) of NGN-BASED.The IPTV network interconnection and the third party that have provided in this work document based on NGN (Next Generation Network, next generation network) insert.
As mentioned above, NGN is meant next generation network.So-called " next generation network " from literal understanding, should be to be the next generation network of basic point with the current network.Angle from development, NGN is at traditional PSTN based on circuit switching (public switchedtelephone network, PSTN) turned to gradually in the network based on packet switching, it has carried all business of original PSTN network, simultaneously great amount of data transmission is unloaded in the IP network to alleviate the heavy burden of PSTN network, the new features with the IP technology increase and have strengthened many old and new's business again.
Existing IPTV network is based on the Non-NGN function structure.At present, many operators progressively introduce the IPTV network of NGN-BASED, but this needs a process, therefore will inevitably have one two kinds network coexisted periods, in order to guarantee smoothly development and transition stably of network, be necessary to propose the architectural framework of two kinds of network interconnections.
The NGN and the existing and following diverse network intercommunication are the importances that realizes more seamless operation between the network.By NGN and legacy network intercommunication, make the progressively realization of NGN network become possibility, and the NGN business that makes the user obtain to enrich, can obtain the business that legacy network provides again simultaneously.In order to ensure the ability that teleservice is provided, the NGN network must coexist with existing various communication networks, and must depend on these networks.In addition, a kind of as in telecom operators' carrier class business network of NGN, although IP network is a kind of network architecture of areal model,,, be difficult to adopt a kind of network architecture single or pure flat surface model to construct this network for the NGN network.Between different operators, require the NGN network is divided into different domain transmissions, control domain and management domain, and the network of each operator also needs to be divided into the operation territory and the management domain of different brackets.Therefore, in networks of different type, between different operators and different control domains and the management domain, the mutual model between structure NGN and the diverse network will be crucial.
At present, do not provide mutual model between NGN and the diverse network as yet.
Summary of the invention
Consider the problems referred to above that exist in the correlation technique and propose the present invention, that is,, realize that NGN and existing diverse network intercommunication are to realize more seamless operation between the network in order to guarantee the level and smooth stable transition of network.
According to the present invention, a kind of IPTV network interconnection architecture at first is provided, be used for the interconnection of the IPTV network of different systems, comprise terminal user function entity, Application Function, content delivery functional entity, network functional entity and transfer function entity, wherein, network functional entity or transfer function entity further comprise the boundary function entity, the boundary function entity is connected to the core transfer function entity in network functional entity or the transfer function entity, and the transport layer interconnection of the interconnection by the boundary function entity when realizing the IPTV network interconnection of different systems.
Wherein, above-mentioned boundary function entity is used to realize that following function one of at least: the conversion of transfer of data connection, Route Selection, the network address and port, Media Stream relaying and firewall functionality.In addition, the boundary function entity can be realized above-mentioned functions by carrying out Border Gateway Protocol.
The IPTV network of above-mentioned different systems comprises: non-IPTV network based on next generation network, based on the IPTV network of next generation network.
According to the present invention, a kind of IPTV network interconnecting method also is provided, be used for non-based on next generation network the IPTV network and based on the interconnection of the IPTV network of next generation network.
This method comprises following processing: in the network functional entity of non-IPTV network of network framework based on next generation network the first boundary function entity is set, and in transfer function entity, the second boundary function entity is set based on the IPTV network of network framework of next generation network, wherein, the first boundary function entity and the second boundary function entity are used to realize that following function one of at least: transfer of data is connected, conversion, Media Stream relaying and the firewall functionality of Route Selection, the network address and port; With the first boundary function entity and the second boundary function physical interconnection, with realize non-based on next generation network the IPTV network and based on the interconnection of the IPTV transport network layer of next generation network.
Comprise under the situation of business control function body at non-IPTV network of network framework based on next generation network, said method further comprises following processing: in non-IPTV network of network framework based on next generation network, by first business control function body control resource control function entity; In IPTV network of network framework, by second business control function body control resource and admission control function entity based on next generation network; Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body of first business control function body and second business control function body.
Do not comprise that at non-IPTV network of network framework under the situation of business control function body, said method further comprises following processing based on next generation network: by non-based on the resource control function entity in the IPTV network of network framework of next generation network and mutual based on the resource control information of two kinds of networks of mutual realization of the resource of the IPTV network of network framework of next generation network and admission control function entity.
Under non-situation about interconnecting based on the IPTV network and the next generation network third party service provider of next generation network, said method further comprises following processing: in non-IPTV network of network framework based on next generation network, by first business control function body control resource control function entity; In IPTV network of network framework, by second business control function body control resource and admission control function entity based on next generation network; Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body of first business control function body and second business control function body.
By the present invention, can realize the IPTV network of different systems, i.e. the interconnection of Non-NGN-Based IPTV network and NGN-Based IPTV network guarantees the level and smooth stable transition of network, thereby realizes more seamless operation between the network.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the IPTV network function configuration diagram of the Non-NGN-BASED (non-based on next generation network) according to correlation technique;
Fig. 2 is the IPTV network function configuration diagram that the NGN-BASED (based on next generation network) according to correlation technique is not with IMS (IP multimedia subsystem, IP Multimedia System);
Fig. 3 is the IPTV function structure schematic diagram according to the band IMS of the NGN-BASED of correlation technique;
Fig. 4 is the schematic diagram of IPTV network interconnection architecture of the Non-NGN-BASED (non-based on next generation network) of system according to the invention embodiment;
Fig. 5 is that the NGN-BASED (based on next generation network) of system according to the invention embodiment is not with the schematic diagram of the IPTV network interconnection architecture of IMS;
Fig. 6 is the schematic diagram of IPTV network interconnection architecture of band IMS of the NGN-BASED of system according to the invention embodiment;
Fig. 7 is the flow chart according to the IPTV network interconnecting method of the inventive method embodiment;
Fig. 8 is the interconnection schematic diagram according to the IPTV network of the NGN-BASED of the embodiment of the invention and the IPTV network of Non-NGN-BASED (band SCF);
Fig. 9 is the interconnection schematic diagram according to the IPTV network of the NGN-BASED of the embodiment of the invention and the IPTV network of Non-NGN-BASED (not with SCF);
Figure 10 is the schematic diagram according to the IPTV network of the Non-NGN-BASED of the embodiment of the invention and NGN third party service provider interconnection;
The realization flow of the roaming of the demand (telecommunication) service when Figure 11 shows the IPTV network interconnection of the IPTV network of NGN-BASED and Non-NGN-BASED.
Embodiment
Several important functional entity in existing network Organization Chart 1-Fig. 3 at first is described.Terminal user function entity (End-User Function, EUF) provide the interface of terminal use and IPTV network, Application Function (Application function, AF) be that (End-User Function EUF) provides the IPTV content is selected and interface operable the terminal user function entity.Business control function body (Service ControlFunction, SCF) be used for asking and discharging network and the service resources that is used for supporting the IPTV business, for example, it can request content transfer function entity (Content deliveryfunction is CDF) at content delivery and memory function entity (Content Delivery﹠amp; Storage function, the CDSF) capacity of middle memory allocated content needs, (Transport Function, TF) (ControlFunction CF) is the Media Stream reservation of network bandwidth to the transfer function entity of request network with the controlled function entity.(Networkattachment control function NACF) mainly is responsible for user terminal distributing IP address, and can transmits other network configuration parameters to user terminal the netconfig function entity.Resource accommodating control function entity (Resource ﹠amp; Admission control function, RACF) be a critical function that is positioned on the bearer control layer, transmit the detail of network to the operation layer shielding, supporting business control is separated with transmitting function, by the control of resource and admittance, guarantee that the use that the user holds water transmits Internet resources.
Based on foregoing, below with reference to accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
System embodiment
According to the embodiment of the invention, a kind of IPTV network interconnection architecture is provided, be used for the interconnection of the IPTV network (the IPTV network of Non-NGN-BASED, the IPTV network of NGN-BASED) of different systems.
Than Fig. 1-existing framework shown in Figure 3, the present invention is except comprising terminal user function entity (EUF), Application Function (AF), content delivery functional entity (CDF), network functional entity (NF) or transfer function entity (TF), also increased boundary function entity (Boarder Function abbreviates BF as).Wherein, this BF can be arranged in NF or TF, and be connected to wherein core transfer function entity (Core transport function, CTF), the transport layer interconnection the when interconnection by BF can realize the IPTV network interconnection of different systems.
Wherein, above-mentioned BF entity is used to realize that following function one of at least: the conversion of transfer of data connection, Route Selection, the network address and port, Media Stream relaying and firewall functionality.Particularly, BF can (Border Gateway Protocol BGP) waits and realizes above-mentioned functions by carrying out Border Gateway Protocol.
Fig. 4 shows the IPTV network architecture according to the Non-NGN-BASED of the embodiment of the invention, and as shown in Figure 4, BF is arranged in NF, and is connected to CTF; Fig. 5 show according to the NGN-BASED of the embodiment of the invention not with the IPTV function structure of IMS, as shown in Figure 5, among the TF of BF position, and be connected to CTF; Fig. 6 shows the IPTV function structure according to the band IMS of the NGN-BASED of the embodiment of the invention, as shown in Figure 6, among the TF of BF position, and is connected to CTF.From Fig. 4 to Fig. 6 as can be seen, the connection between the CTF realizes by the interconnection between the BF.
Method embodiment
According to the inventive method embodiment, a kind of IPTV network interconnecting method is provided, be used for the interconnection of the IPTV network of the IPTV network of Non-NGN-BASED and NGN-BASED.
As shown in Figure 7, this method comprises following processing:
Step S702, the one BF (boundary function entity) is set in the NF of the IPTV of Non-NGN-BASED network of network framework, and in the TF of the IPTV of NGN-BASED network of network framework, the 2nd BF is set, wherein, a BF and the 2nd BF are used to realize that following function one of at least: transfer of data is connected, conversion, Media Stream relaying and the firewall functionality of Route Selection, the network address and port;
Step S704 is with a BF and the 2nd BF interconnection, with the interconnection of the IPTV transport network layer of the IPTV network of realizing Non-NGN-BASED and NGN-BASED.
Example 1
Fig. 8 shows the interconnection schematic diagram (roaming) of the IPTV network of NGN-BASED and the IPTV network of Non-NGN-BASED (band SCF).As shown in Figure 8, when two kinds of network interconnections need mutual resource and access control information, in the IPTV of the Non-NGN-BASED that has SCF network, by SCF control resource control function (Resource Control, RC), in the IPTV of NGN-BASED network, by SCF control resource and admission control function (Resource﹠amp; Admission controlfunction, RACF), and it is mutual to finish the resource control information of two kinds of networks by control or session protocol (C/S Protocol) between the ISCF among two network SCF.
Like this, comprise that at the IPTV of Non-NGN-BASED network of network framework under the situation of SCF, said method further comprises following processing: in the IPTV of Non-NGN-BASED network of network framework, by SCF (being designated as a SCF) control RC wherein; In the IPTV of NGN-BASED network of network framework, by SCF (being designated as the 2nd SCF) control RACF wherein; Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body (ISCF) of the one SCF and the 2nd SCF.
Example 2
Fig. 9 shows the interconnection schematic diagram (roaming) of the IPTV network of NGN-BASED and the IPTV network of Non-NGN-BASED (not with SCF).As shown in Figure 9, when two kinds of network interconnections need mutual resource and access control information, the interactive information of the mutual transfer resource control of the RACF (resource and admission control subsystem) of RC by Non-NGN-BASED and the IPTV network of NGN-BASED.
Like this, do not comprise that at the IPTV of Non-NGN-BASED network of network framework under the situation of SCF, said method further comprises following processing: the resource control information of two kinds of networks of mutual realization of the RACF of the IPTV network of network framework by RC in the IPTV network of network framework of Non-NGN-BASED and NGN-BASED is mutual.
Example 3
Figure 10 shows the IPTV network of Non-NGN-BASED and the schematic diagram of NGN third party service provider interconnection.
As can be seen from Figure 10, it is mutual to finish the resource control information of two kinds of networks by control or session protocol (C/S Protocol) between the ISCF among two network SCF.
Like this, under the situation of the IPTV of Non-NGN-BASED network and NGN third party service provider interconnection, said method further comprises following processing: in the IPTV of Non-NGN-BASED network of network framework, by SCF (being designated as a SCF) control RC wherein; In the IPTV of NGN-BASED network of network framework, by SCF (being designated as the 2nd SCF) control RACF wherein; Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body (ISCF) of the one SCF and the 2nd SCF.
Demand (telecommunication) service (Content on demand, the realization flow of roaming VoD) when Figure 11 shows the IPTV network of network interconnection of the IPTV network of NGN-BASED and Non-NGN-BASED.As shown in figure 10, can comprise following processing (1-11):
(1) the IPTV terminal by access network (Access Network Function, ANF), authentication and IP address assignment function (Authentication ﹠amp; IP Allocation AIA) obtains the IP address;
(2-3) finish subscriber authorisation and authentication after, ANF is that IPTV terminal distribution IP address connects;
(4) ANF obtains from the RACF of home network and obtains the subscriber policy rule, and (Resource control RC) opens signalling path to the resource control function by visited network;
(5) the IPTV terminal is registered by carrying out on the IMS of SIP login mechanism in home network;
(6) the IPTV terminal sends the SIP INVITE and asks the IPTV utility cession to Core IMS, Core IMS with this message send to application function (AF, ApplicationFunctions);
(7) AF for the IPTV terminal to content delivery function (Content DeliveryFunction, CDF) signaling requests resource allocation;
(8) (Content Delivery Function CDF) arrives Core IMS requests resource allocation for the IPTV terminal to the content delivery function; Core IMS sends the IPTV media information to ownership RACF, and (Access Network, passage AN) send Policyrules to AN by this passage to the RC in the ownership RACF request visited network for the IPTV Media Stream is opened to access network;
(9) IPTV terminal request AF sends Media Stream;
(10) (Content Delivery Function CDF) begins to send Media Stream to AF request content transfer function;
(11) the IPTV terminal is received the Media Stream that IPTV sends from the CDF of home network, and Media Stream is sent to the IPTV terminal of visited network by CTF and BF (boundary function entity) from the CDF of home network.
To sum up, by means of technical scheme provided by the invention, can realize the IPTV network of different systems, i.e. the interconnection of Non-NGN-Based IPTV network and NGN-Based IPTV network guarantees the level and smooth stable transition of network, thereby realizes more seamless operation between the network.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. IPTV network interconnection architecture, be used for the interconnection of the IPTV network of different systems, comprise the terminal user function entity, Application Function, the content delivery functional entity, network functional entity and transfer function entity, it is characterized in that, described network functional entity or described transfer function entity further comprise the boundary function entity, described boundary function entity is connected to the core transfer function entity in described network functional entity or the described transfer function entity, and the transport layer interconnection of the interconnection by described boundary function entity when realizing the IPTV network interconnection of different systems.
2. IPTV network interconnection architecture according to claim 1, it is characterized in that described boundary function entity is used to realize that following function one of at least: the conversion of transfer of data connection, Route Selection, the network address and port, Media Stream relaying and firewall functionality.
3. IPTV network interconnection architecture according to claim 2 is characterized in that, described boundary function entity is realized described function by carrying out Border Gateway Protocol.
4. according to each described IPTV network interconnection architecture in the claim 1 to 3, it is characterized in that the IPTV network of described different systems comprises: non-IPTV network, based on the IPTV network of next generation network based on next generation network.
5. IPTV network interconnecting method, be used for non-based on next generation network the IPTV network and based on the interconnection of the IPTV network of next generation network, it is characterized in that, comprise following processing:
In the network functional entity of non-IPTV network of network framework based on next generation network, the first boundary function entity is set, and in transfer function entity, the second boundary function entity is set based on the IPTV network of network framework of next generation network, wherein, the described first boundary function entity and the described second boundary function entity are used to realize that following function one of at least: transfer of data is connected, conversion, Media Stream relaying and the firewall functionality of Route Selection, the network address and port;
With described first boundary function entity and the described second boundary function physical interconnection, with realize described non-based on next generation network the IPTV network and the interconnection of described IPTV transport network layer based on next generation network.
6. IPTV network interconnecting method according to claim 5 is characterized in that, comprises at described non-IPTV network of network framework based on next generation network further comprising following processing under the situation of business control function body:
In described non-IPTV network of network framework, by first business control function body control resource control function entity based on next generation network;
In described IPTV network of network framework, by second business control function body control resource and admission control function entity based on next generation network;
Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body of described first business control function body and described second business control function body.
7. IPTV network interconnecting method according to claim 5 is characterized in that, does not comprise at described non-IPTV network of network framework based on next generation network further comprising following processing under the situation of business control function body:
Mutual by the described non-resource and the resource control information of two kinds of networks of mutual realization of admission control function entity based on resource control function entity in the IPTV network of network framework of next generation network and described IPTV network of network framework based on next generation network.
8. the IPTV network interconnecting method of stating according to claim 5 is characterized in that, under described non-situation about interconnecting based on the IPTV network and the next generation network third party service provider of next generation network, further comprises following processing:
In described non-IPTV network of network framework, by first business control function body control resource control function entity based on next generation network;
In described IPTV network of network framework, by second business control function body control resource and admission control function entity based on next generation network;
Realize that by control or session protocol the resource control information of two kinds of networks is mutual between the IPTV business control function body of described first business control function body and described second business control function body.
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| CN2007101636419A CN101330426B (en) | 2007-10-15 | 2007-10-15 | IPTV network interconnection architecture and interconnection method |
| PCT/CN2007/003882 WO2009049457A1 (en) | 2007-10-15 | 2007-12-28 | Iptv network interconnecting architecture and interconnecting method |
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| US20030236914A1 (en) * | 2002-06-25 | 2003-12-25 | Intel Corporation | Connection of next generation mobile nodes across previous generation networks to next generation networks |
| CN1747400A (en) * | 2004-09-08 | 2006-03-15 | 华为技术有限公司 | System and realization for dynamic cooperating service quality in next generation network |
| CN1747467A (en) * | 2004-09-08 | 2006-03-15 | 华为技术有限公司 | Resource and admission control subsystem and method in NGN |
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| US6172986B1 (en) * | 1997-05-13 | 2001-01-09 | Hitachi, Ltd. | Mobile node, mobile agent and network system |
| CN1147105C (en) * | 2001-03-16 | 2004-04-21 | 北京亿阳巨龙智能网技术有限公司 | Network intercommunication implementing server |
| CN100542121C (en) * | 2006-09-21 | 2009-09-16 | 华为技术有限公司 | A kind of method and system of communication from public telephone switching network to IP multimedia subsystem |
| CN101035251A (en) * | 2007-04-19 | 2007-09-12 | 中兴通讯股份有限公司 | IPTV service system based on the IP multimedia sub-system |
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| US20030236914A1 (en) * | 2002-06-25 | 2003-12-25 | Intel Corporation | Connection of next generation mobile nodes across previous generation networks to next generation networks |
| CN1747400A (en) * | 2004-09-08 | 2006-03-15 | 华为技术有限公司 | System and realization for dynamic cooperating service quality in next generation network |
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| CN101330426A (en) | 2008-12-24 |
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