Summary of the invention
The present invention aims to provide a kind of interconnection device and program request, program request and live broadcasting method of the IPTV system based on IMS, to solve the problem that user's roaming condition in the prior art uses the IPTV business down.
In an embodiment of the present invention, provide a kind of interconnection device of the IPTV system based on IMS, having comprised: visited network, be used to accept the visit of subscriber equipment (User Equipment abbreviates UE as), it comprises the transfer function entity; Home network, UE belongs to home network, it comprises Core IMS (core IMS), application and IPTV business function entity, IPTV media function entity (Media Functions, abbreviate MF as), the transfer function entity comprises: transmission controlled function entity, it comprises Network Attachment Subsystem (NetworkAttachment Subsystem abbreviates NASS as) and resource access subsystem (ResourceAccess Subsystem abbreviates RACS as); The transmission process functional entity; IPTV MF comprises: IPTV media control function entity (Media Control Functions abbreviates MCF as) and IPTV media delivery function (IPTV Media Delivery Functions abbreviates IPTV MDF as); IPTV business function entity comprises: subscriber information server functional entity (User Profile Server Functions abbreviates UPSF as), IPTV business control function body (IPTV Service Control Functions abbreviates IPTV SCF as).
Preferably, IPTV SCF connects UE by Ut.
Preferably, Core IMS connects UE by Gm, connects NASS by e2, passes through Gq ' interface and connects RACS.
Preferably, the NASS of visited network connects UE by the Gt interface.
Preferably, IPTV MCF connects UE by the Xc interface.
Preferably, IPTV MDF connects UE by the Xd interface.
Preferably, IPTV business function entity also comprises: service selection functional entity (ServiceSelection Functions abbreviates SSF as), and it connects UE by the Xa interface; And service discovering functional entity (Service Discovery Functions abbreviates SDF as), it connects UPSF by Sh interface, connects Core IMS by ISC interface.
In an embodiment of the present invention, a kind of UE startup method of interconnection device of the IPTV system based on IMS also is provided, visited network in the UE visit interconnection device, and the home network in the ownership interconnection device, may further comprise the steps: step a, the NASS in the visited network receives the network attachment request of UE; Step c, the parameter that the NASS of visited network will be used for network attachment returns to UE; Steps d, the Core IMS of home network receives from the IMS register requirement of UE and to UE feedback registering result information; Step e, the SDF of home network is to the address configuration information of the legal business of UE feedback and the information relevant with the ability of UE; Step f, the SSF of home network receives the selection service request from UE, and feeds back professional relevant concrete data message so that the user selects suitable business to UE.
Preferably, the SDF of home network receives that the business of UE adheres to request back execution in step e.
Preferably, the SDF of home network just asks initiatively execution in step e without UE.
Preferably, the network attachment request comprises the discovery of proxy call conversation control function entity among the Core IMS of configuration information, home network of IP address of terminal.
Preferably, comprise in the parameter that home network distributes to the address information of proxy call conversation control function entity among the Core IMS of the IP address information of UE and home network.
In an embodiment of the present invention, a kind of order method of interconnection device of the IPTV system based on IMS also is provided, UE is in the visited network in the interconnection device, and belong to home network in the interconnection device, may further comprise the steps: step a: the CoreIMS of home network receives the conversation initialization request that UE initiates, with the request demand (telecommunication) service; Step b: the Core IMS of home network sends the conversation initialization request to the SCF of home network; Step c:SCF sends the conversation initialization request to the MF of home network; Steps d, the foundation of carrying out content control between MF and the UE and/or paying channel; Step e:MF sends conversation initialization to SCF and replys; Step f:SCF sends conversation initialization to the Core of home network IMS and replys; Step g, the Core IMS of home network is reserved resource before the RACS of visited network submits to, with the content control of opening visited network and/or the passage of paying content; Step I: the RACS of visited network sends resource reservation to the Core of home network IMS and replys; Step k, the Core IMS of home network sends conversation initialization to UE and replys; And step l, UE reply according to conversation initialization and MF between connect, accept the content stream among the MF.
Preferably, execution in step d after UE initiates the medium request specifically comprises: steps d a: the medium that the Core IMS of home network receives the UE transmission provide request, and medium provide request to comprise content control and/or content delivery channel; Steps d b: the CoreIMS of home network sends resource reservation request to the RACS of visited network; Steps d d: the RACS of visited network sends resource reservation to the Core of home network IMS and replys; Steps d f: the Core IMS of home network initiates medium to SCF request is provided; Steps d g:SCF sends medium to MF request is provided; Steps d h:MF provides to SCF initiation medium and replys, to return the information that comprises content control and/or content delivery channel; Steps d i:SCF provides to the Core of home network IMS transmission medium and replys; Steps d n: the Core IMS of home network provides to UE transmission medium and replys.
Preferably, also comprise between steps d i and steps d n: steps d j: the Core IMS of home network sends resource reservation request to the RACS of visited network; Steps d l: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Preferably, execution in step d after the request of MF initiation medium, specifically comprise: steps d a:MF sends medium to SCF request is provided, and the medium request comprises content control and/or content delivery channel; Steps d b:SCF sends medium to the Core of home network IMS request is provided; Steps d c: the Core IMS of home network sends resource reservation request to the RACS of visited network; Steps d e: the RACS of visited network sends resource reservation to the Core of home network IMS and replys; Steps d g: the Core IMS of home network initiates medium to UE request is provided; Steps d h: the medium that home network Core IMS reception UE initiates provide replys, to return the information that comprises content control and/or content delivery channel; Steps d m: the Core IMS of home network provides to SCF transmission medium and replys; Steps d n:SCF returns medium to UE and provides and reply.
Preferably, also comprise between steps d h and steps d m: steps d i: the Core IMS of home network sends resource reservation request to the RACS of visited network; Steps d k: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
In an embodiment of the present invention, a kind of live broadcasting method of interconnection device of the IPTV system based on IMS also is provided, UE is in the visited network in the interconnection device, and belong to home network in the interconnection device, may further comprise the steps: step a: the CoreIMS of home network receives the conversation initialization request that UE initiates, with the request live broadcast service; Step b: the Core IMS of home network sends the conversation initialization request to the SCF of home network; Step c, the foundation of carrying out content control between SCF and the UE and/or paying channel; Steps d: SCF sends conversation initialization to the Core of home network IMS and replys; Step e, the Core IMS of home network is reserved resource before the RACS of visited network submits to, with the passage of the content delivery of opening visited network; Step g: the RACS of visited network sends resource reservation to the Core of home network IMS and replys; Step I, the Core IMS of home network sends conversation initialization to UE and replys; And step j, UE reply according to conversation initialization and multicast control point/multicast replication point between connect, accept multicast data flow.
Preferably, execution in step c after UE initiates the medium request specifically comprises: step ca: the medium that the Core IMS of home network receives the UE transmission provide request, and medium provide request to comprise the content delivery channel; Step cb: the Core IMS of home network sends resource reservation request to the RACS of visited network; Step cd: the RACS of visited network sends resource reservation to the Core of home network IMS and replys; Step cf: the Core IMS of home network initiates medium to SCF request is provided; Step cg:SCF provides to the Core of home network IMS initiation medium and replys, to return the information that comprises the content delivery channel; Step cl: the Core IMS of home network provides to UE transmission medium and replys.
Preferably, also comprise between step cg and step cl: step ch: the Core IMS of home network sends resource reservation request to the RACS of visited network; Step cj: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Preferably, execution in step c specifically comprised after MF initiated the medium request: step ca:SCF sends medium to the Core of home network IMS request is provided, and medium provide request to comprise the content delivery channel; Step cb: the Core IMS of home network sends resource reservation request to the RACS of visited network; Step cd: the RACS of visited network provides to the CoreIMS of home network transmission medium and replys; Step cf: the Core IMS of home network initiates medium to UE request is provided; Step cg, the medium that the Core IMS reception UE of home network initiates provide replys, to return the information that comprises the content delivery channel; Step cl: the Core IMS of home network provides to SCF transmission medium and replys.
Preferably, also comprise between step cg and step cl: step ch: the Core IMS of home network sends resource reservation request to the RACS of visited network; Step cj: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Interconnection device and program request, program request and the live broadcasting method based on the IPTV system of IMS of the above embodiment of the present invention, overcome the problem of using the IPTV business in the prior art under user's roaming condition, realized that IPTV user in the roaming of arbitrary region and nomadic, has promoted the core competitiveness of IPTV system.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the block diagram based on the interconnection device of the IPTV system of IMS according to the embodiment of the invention, comprising: visited network 10, be used to accept the visit of UE 102, and it comprises transfer function entity 114; Home network 20, UE belongs to home network, and it comprises Core IMS 206, application and IPTV business function entity 224, IPTV MF 220,
Transfer function entity 114 comprises: transmission controlled function entity 112, and it comprises NASS108 and RACS 110; Transmission process functional entity 116;
IPTV MF 220 comprises: IPTV MCF 218 and IPTV MDF 222;
IPTV business function entity comprises: UPSF 204, IPTV SCF 202.
Preferably, IPTV SCF connects UE by Ut.
Preferably, Core IMS connects UE by Gm, connects NASS by e2, passes through Gq ' interface and connects RACS.
Preferably, the NASS of visited network connects UE by the Gt interface.
Preferably, IPTV MCF connects UE by the Xc interface.
Preferably, IPTV MDF connects UE by the Xd interface.
Fig. 2 shows according to the preferred embodiment of the invention the block diagram based on the interconnection device of the IPTV system of IMS, and IPTV business function entity also comprises:
SSF 226, and it connects UE by the Xa interface; And
SDF 228, and it connects UPSF 204 by Sh interface, connect Core IMS 206 by ISC interface.
The specific explanations of each module of the interconnection device that more than relates to is as follows:
UE (User Equipment), subscriber terminal equipment can be the mobile phone with locomotivity; Also can be the set-top box of fixed network or the software terminal of realizing set-top box functionality, also comprise functions such as home gateway based on the software realization.This terminal equipment and user interactions can be watched as program request, IPTV business such as live.
Core IMS (Core IP Multimedia Subsystem) module corresponding to the major function entity sets of service control layer face in the NGN network, mainly comprises nucleus modules such as P-CSCF/I-CSCF/S-CSCF kernel call session control.This functional entity provides the session control mechanism on SIP basis, provide IPTV terminal use's authentication, authentication, request resource access control (RACS) function to carry out resource allocation work, this module is also carried out the SIP session alternately with IPTV terminal, IPTV application function and content distribution function, finishes functions such as safety, Qos, charging, roaming;
IPTV service control function (IPTV Service Control Functions) module, this mould is a sip application server, provide service authentication in session initiation or modification, this comprises the information of checking the user, checks the content that the user whether can legal use selects; Credit limit and credit control; Select relevant media function etc., this function is primarily aimed at IPTV business such as program request, live, video recording, time shift.
Subscriber information server function (User Profile Server Functions) is called for short UPSF, comprises the information of the user data that the IPTV business is provided.
IPTV media function (IPTV Media Functions is called for short MF): comprise IPTV media control function and IPTV media delivery function.As described below respectively.
IPTV media control function (IPTV Media Control Functions) mainly comprises following function:
● the Media Stream of control MDF
● the medium of management MDF are handled
● the state of monitoring MDF
● mutual (for example technique mode " trick mode " order) of management and terminal
● processing is mutual with IPTV service control function SCF's
● accurately monitor this function content distribution and the state relevant control with different MDF
● when a MCF controls a plurality of MDF, select to provide the MDF of service according to certain strategy
● select the MF function, the result who selects is returned to SCF and the session that is redirected is returned to the MF function (for example, when the content of request between this MF function or MF during load balancing) of selection
● produce charge information, for example the terminal use based on view content charges.
● IPTV media delivery function (IPTV Media Delivery Functions), the function that mainly comprises is as follows:
● handle the payment (paying media business) of Media Stream to the user
● provide status report to MCF (for example IPTV Media Stream of report foundation).
● medium (for example content of program request), may also store the media business relevant information of some IPTV business.
● under the particular case, it can be used to store the content of frequent visit or user's related content (for example the content that produces of the live broadcast service of PVR, time shift, technique mode, user etc.) under same task be can't help situation that terminal finishes.
● as the media formats (for example, the decomposing force of television system depend on terminal capability or customer parameter select) (optional) of extra processing, coding or decoding (if desired) medium to different needs
● finish content protection function (for example content-encrypt) (optional)
● support obtain (optional) of IPTV media content
● for live broadcast service, this function is as the multicast source (optional) of live Media Stream
Transmission process function (Transport Processing Functions) is represented network insertion connection and IP kernel heart function, is responsible for the transmission of data under the prerequisite that ensures QoS.
(the Intermediate Breakout ControlFunction of interruption controls functional entity between medium, abbreviate IBCF as) module, mutual control module as carrying out the mutual gateway control function of sip message between two CoreIMS, also can be used as the charging triggering function promptly.
Resource access subsystem (Resource and Admission Control Subsystem) module, RACS assembly in the NGN network, this module is finished the resource control request from Core IMS module, determine the resource of available transmission, finish functions such as RSVP, distribution, bag are overanxious, Network address port translation alternately with bearing bed.
Business game decision making function (Service Policy Decision Function is called for short SPDF), this function is in resource access subsystem inside, is used for the interface module with external resource access subsystem.This function conduct is the final policy decision point of resource access subsystem inside separately, also as initiate resource reservation, resource modifying, resource submission request to other business game decision making functions.
Network Attachment Subsystem (Network Attachment Subsystem) module, NASS assembly in the NGN network, the initial work that provides the registration of access aspect and user terminal to insert the NGN business also provides authentication, the authentication of transport layer, the functions such as IP address space of management Access Network.
User access authorization function (User Access Authorization Function is called for short UAAF): finish subscription authentication, authorization check based on NASS user profile in network access layer; Can finish from the NASS user of each mandate and collect user's metering data; Also can be used as an agency, this moment UAAF can find and and other the UAAF server of NASS at user place of mandate communicate, UAAF agency can be forwarded to access, mandate and the charging request of the access management function AMF among its NASS the UAAF acting server of other NASS, and the response concurrent that can act on behalf of the UAAF acting server of accepting other NASS is delivered among the access management function AMF.
Further, communicate between the transmission process function of visited network and the transmission process function of home network, this function alternately can process IP TV MDF media flow transmission in UE and the control messages of the Media Stream between process IP TV MCF and the UE.
Further, communicate between the NASS of the NASS of visited network and home network.Be used to transmit the request of UE to the network attachment of home network.
Further, communicate between the RACS of the RACS of visited network and home network.Be used to transmit the resource access control request of UE to home network.The RACS that is used for home network asks its medium data transmission path of opening the transmission process function of visited network to the RACS of visited network, makes the transmission process function of visited network can accept the content flow data of IPTV.
Further, between the NASS function of terminal UE and visited network interface is arranged, this interface is responsible for terminal to the NASS of transmission controlled function request network attachment parameter information, and required parameter comprises the IP address configuration information of terminal UE, the address information of the P-CSCF among the Core IMS etc.
Other interfaces meet the interface that defines in the IPTV architecture standard of existing standard based on IMS, do not repeat them here.
Fig. 3 shows the message flow chart according to the UE startup method of the embodiment of the invention, and wherein, the visited network in the UE visit interconnection device, and the home network in the ownership interconnection device may further comprise the steps:
Step 1, the NASS in the visited network receives the network attachment request of UE;
Step 3, the parameter that the NASS of visited network will be used for network attachment returns to UE;
Step 4, the Core IMS of home network receives from the IMS register requirement of UE and to UE feedback registering result information;
Step 5, the SDF of home network is to the address configuration information of the legal business of UE feedback and the information relevant with the ability of UE;
Step 6, the SSF of home network receives the selection service request from UE, and feeds back professional relevant concrete data message so that the user selects suitable business to UE.
Preferably, the SDF of home network receives that the business of UE adheres to request back execution in step 5.
Preferably, the SDF of home network just asks initiatively execution in step 5 without UE.
Preferably, the network attachment request comprises the discovery of proxy call conversation control function entity among the Core IMS of configuration information, home network of IP address of terminal.
Preferably, comprise in the parameter that home network distributes to the address information of proxy call conversation control function entity among the Core IMS of the IP address information of UE and home network.
Fig. 4 shows the schematic diagram according to the interconnection device of Fig. 3 embodiment, comprising: visited network 10, be used to accept the visit of UE 102, and it comprises NASS 108; Home network 20, UE belongs to home network, and it comprises Core IMS 206, SSF 226 and SDF 228.
Fig. 5 shows the message flow chart according to the order method of the embodiment of the invention, and wherein, UE is in the visited network in the interconnection device, and belongs to the home network in the interconnection device, may further comprise the steps:
Step 1: the Core IMS of home network receives the conversation initialization request that UE initiates, with the request demand (telecommunication) service;
Step 2: the Core IMS of home network sends the conversation initialization request to the SCF of home network;
Step 3:SCF sends the conversation initialization request to the MF of home network;
Step 4, the foundation of carrying out content control between MF and the UE and/or paying channel;
Step 5:MF sends conversation initialization to SCF and replys;
Step 6:SCF sends conversation initialization to the Core of home network IMS and replys;
Step 7, the Core IMS of home network is reserved resource before the RACS of visited network submits to, with the content control of opening visited network and/or the passage of paying content;
Step 9: the RACS of visited network sends resource reservation to the Core of home network IMS and replys;
Step 11, the Core IMS of home network sends conversation initialization to UE and replys; And
Step 12, UE reply according to conversation initialization and MF between connect, accept the content stream among the MF.
Fig. 6 shows the schematic diagram according to the interconnection device of Fig. 5 embodiment, comprising: visited network 10, be used to accept the visit of UE 102, and it comprises RACS 110; Home network 20, UE belongs to home network, and it comprises Core IMS 206, SCF 202 and MF 220.
Preferably, execution in step 4 after UE initiates the medium request, Fig. 7 shows the message flow chart of order method according to the preferred embodiment of the invention, specifically comprises:
Step 1: the medium that the Core IMS of home network receives the UE transmission provide request, and medium provide request to comprise content control and/or content delivery channel;
Step 3: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 4: the RACS of visited network sends resource reservation to the Core of home network IMS and replys;
Step 6: the Core IMS of home network initiates medium to SCF request is provided;
Step 7:SCF sends medium to MF request is provided;
Step 8:MF provides to SCF initiation medium and replys, to return the information that comprises content control and/or content delivery channel;
Step 9:SCF provides to the Core of home network IMS transmission medium and replys;
Step 14: the Core IMS of home network provides to UE transmission medium and replys.
Preferably, between step 9 and step 14, also comprise:
Step 11: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 12: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Preferably, execution in step 4 after the request of MF initiation medium, Fig. 8 shows the message flow chart according to the order method of the preferred embodiment, specifically comprises:
Step 1:MF sends medium to SCF request is provided, and the medium request comprises content control and/or content delivery channel;
Step 2:SCF sends medium to the Core of home network IMS request is provided;
Step 4: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 5: the RACS of visited network sends resource reservation to the Core of home network IMS and replys;
Step 7: the Core IMS of home network initiates medium to UE request is provided;
Step 8: the medium that home network Core IMS reception UE initiates provide replys, to return the information that comprises content control and/or content delivery channel;
Step 13: the Core IMS of home network provides to SCF transmission medium and replys;
Step 14:SCF returns medium to UE and provides and reply.
Preferably, between step 8 and step 13, also comprise:
Step 10: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 11: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Fig. 9 shows the message flow chart according to the live broadcasting method of the embodiment of the invention, and wherein, UE is in the visited network in the interconnection device, and belongs to the home network in the interconnection device, may further comprise the steps:
Step 1: the Core IMS of home network receives the conversation initialization request that UE initiates, with the request live broadcast service;
Step 2: the Core IMS of home network sends the conversation initialization request to the SCF of home network;
Step 3, the foundation of carrying out content control between SCF and the UE and/or paying channel;
Step 4:SCF sends conversation initialization to the Core of home network IMS and replys;
Step 5, the Core IMS of home network is reserved resource before the RACS of visited network submits to, with the passage of the content delivery of opening visited network;
Step 8: the RACS of visited network sends resource reservation to the Core of home network IMS and replys;
Step 9, the Core IMS of home network sends conversation initialization to UE and replys; And
Step 10, UE reply according to conversation initialization and multicast control point/multicast replication point between connect, accept multicast data flow.
Preferably, execution in step 3 after UE initiates the medium request, Figure 10 shows the message flow chart according to the live broadcasting method of the preferred embodiment, specifically comprises:
Step 1: the medium that the Core IMS of home network receives the UE transmission provide request, and medium provide request to comprise the content delivery channel;
Step 3: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 4: the RACS of visited network sends resource reservation to the Core of home network IMS and replys;
Step 6: the Core IMS of home network initiates medium to SCF request is provided;
Step 7:SCF provides to the Core of home network IMS initiation medium and replys, to return the information that comprises the content delivery channel;
Step 12: the Core IMS of home network provides to UE transmission medium and replys.
Preferably, between step 7 and step 12, also comprise:
Step 8: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 10: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
Preferably, execution in step 3 after the request of MF initiation medium, Figure 11 shows the message flow chart according to the live broadcasting method of the preferred embodiment, specifically comprises:
Step 1:SCF sends medium to the Core of home network IMS request is provided, and medium provide request to comprise the content delivery channel;
Step 2: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 4: the RACS of visited network provides to the Core of home network IMS transmission medium and replys;
Step 6: the Core IMS of home network initiates medium to UE request is provided;
Step 7, the medium that the Core IMS reception UE of home network initiates provide replys, to return the information that comprises the content delivery channel;
Step 12: the Core IMS of home network provides to SCF transmission medium and replys.
Preferably, between step 7 and step 12, also comprise:
Step 8: the Core IMS of home network sends resource reservation request to the RACS of visited network;
Step 10: the RACS of visited network sends resource reservation to the Core of home network IMS and replys.
From above description, as can be seen, interconnection device and program request, program request and the live broadcasting method based on the IPTV system of IMS of the above embodiment of the present invention, overcome the problem of using the IPTV business in the prior art under user's roaming condition, realized that IPTV user in the roaming of arbitrary region and nomadic, has promoted the core competitiveness of IPTV system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
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.