CN101340362B - Uploading method, system and entity of channel switching result - Google Patents
Uploading method, system and entity of channel switching result Download PDFInfo
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Abstract
The invention discloses a method for reporting channel switching results, which comprises: a channel switching result reporting entity obtains the channel switching results of the user terminal; the obtained channel switching results of the user terminal are reported to a service control function entity (SCF). Additionally, the invention also discloses a system for reporting channel switching results, which comprises a channel switching result reporting entity which is used for obtaining the channel switching results of the user terminal and reporting the obtained channel switching results of the user terminal to an SCF, and the SCF which is used for receiving the channel switching results of the user terminal coming from the channel switching result reporting entity. Finally, the invention also discloses a channel switching result reporting entity. The proposal provided by the invention can cause the channel switching results of the user terminal to be reported to the SCF.
Description
Technical field
The present invention relates to Internet Protocol Television (IPTV) technology, relate in particular to a kind of report method, system and entity of channel switching result.
Background technology
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 DTV is provided to the domestic consumer.IPTV uses transmission control protocol/Internet Protocol (TCP/IP) to carry out clean culture, broadcasting or group broadcasting video frequency business as bearing protocol, effectively television network, three fields of telephone network and the Internet combined, and be the most representative business of the integration of three networks.
IP Multimedia System (IMS; IP Multimedia Subsystem) is an IP-based standards system that is independent of access technology; IMS and existing voice and data network (no matter be like fixed network users such as PSTN, ISDN, internets, still like mobile network users such as GSM, CDMA) can intercommunications.The IMS system makes can set up reciprocity IP communication through various types of clients, and can obtain needed service quality.Except that session management, the IMS system also relates to the service of completion provides necessary function (for example registration, safety, charging, carrying control, roaming).It is the core that the IMS system has constituted IP kernel heart net.
In the IMS system, Proxy Call Session Control Function (P-CSCF) and service call conversation control function (S-CSCF) are the important entities in the IMS system.Wherein, P-CSCF is responsible for checking request, and is responsible for handling and transmitted response, all is transmitted to the target of appointment through P-CSCF from subscriber equipment (UE) or conversation initialized protocol (SIP) signaling flow of issuing UE.S-CSCF is positioned at home network, is the core of IMS system, for UE carries out session control and registration service.When UE is in the session, S-CSCF peace preservation association speech phase, and according to the needs of Virtual network operator to service support, carry out alternately with service platform and billing function.In the network of an operator, a plurality of S-CSCF can be arranged, and these S-CSCF can have different functions.
For the unified control that realizes that IMS inserts fixed network users; In the network architecture, introduced Network Attachment Subsystem (NASS; Network Attachment Sub-System) and resource and accommodation control subsystem (RACS, Resource and Admission Control Subsystem).NASS is used to accomplish the management that the user is attached to access network, comprises that the user rs authentication and the network address are distributed, location management.RACS then is mainly used in scheduling and the distribution of accomplishing resource, realizes QoS control.Simultaneously, be divided into basic forwarding capability (EFF) and basic control function (ECF) to the function that realizes the multicast control point.Wherein, EFF mainly is responsible for accomplishing duplicating of port data bag, and ECF mainly is responsible for handling the relevant agreement of multicast.
The IPTV framework that starts at present based on IMS, with the related functional entities of directly reusing IMS, and through suitably increasing new functional entity and to the expansion of existing capability entity correlation function, realizing the professional support to IPTV.Wherein, each IPTV business is made up of pair of IP TV Service Control Function and IPTV media function (MF).Wherein, MF is responsible for the control of Media Stream and submits.SCF is a kind of sip application server, and function comprises: authorize during (1) conversation initialization; (2) implementation modification flow process, whether the inspection user's data allows the user capture should business with decision; (3) number of the account control; (4) select corresponding M F.
In addition, in the network architecture, also increased service discovering function (SDF) and service selection functional (SSF), be used to UE and select an IPTV business to submit necessary information.Wherein, SSF provides the tabulation of a series of available service that UE can browse and select.
But in the prior art; For UE channel taking place switches; After promptly leaving current multicast channel and adding another multicast channel; How still do not have definite scheme for SCF this result notification, make therefore that SCF can't charge according to the channel switching result of UE, operations such as statistics or initiation session change.
Summary of the invention
In view of this, a kind of report method of channel switching result is provided on the one hand in the embodiment of the invention, a kind of reporting system and entity of channel switching result is provided on the other hand, so that make the channel switching result of user terminal can report SCF.
The report method based on the channel switching result under the IPTV framework of IP Multimedia System that is provided in the embodiment of the invention comprises:
Channel switching result reports entity to obtain the channel switching result of user terminal, and channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
Channel switching result reports entity to give business control function body SCF with the channel switching result of the user terminal that is obtained through PUBLISH in the Session initiation protocol SIP or INFO MESSAGE information reporting, and it is user terminal or Proxy Call Session Control Function P-CSCF that wherein said channel switching result reports entity.
The IPTV system based on IP Multimedia System that is provided in the embodiment of the invention comprises:
Channel switching result reports entity; Be used to obtain the channel switching result of user terminal; Give SCF with the channel switching result of the user terminal that is obtained through the PUBLISH in the conversation initialization Session Initiation Protocol or INFO or MESSAGE information reporting, channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
SCF is used to receive the channel switching result that reports the user terminal of entity from channel switching result, and it is user terminal or Proxy Call Session Control Function P-CSCF that wherein said channel switching result reports entity.
The channel switching result that is provided in the embodiment of the invention reports entity, comprising:
The switching result acquisition module is used to obtain the channel switching result of user terminal;
Timer module; Be used for after said switching result acquisition module obtains said channel switching result; Start the timer of self; And when timer reaches preset duration, sending announcement information to the switching result reporting module, channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
The switching result reporting module is used for when receiving said notification message, and the channel switching result of the said user terminal that obtains is reported, and it is user terminal or Proxy Call Session Control Function P-CSCF that wherein said channel switching result reports entity.
Description of drawings
Can find out from such scheme, report entity to obtain the channel switching result of user terminal through channel switching result in the embodiment of the invention, and the channel switching result of the user terminal that is received is reported business control function body SCF.Thereby make the channel switching result of user terminal can report SCF.
Fig. 1 is the exemplary process diagram of the report method of embodiment of the invention mid band switching result;
Fig. 2 is the exemplary block diagram of the reporting system of embodiment of the invention mid band switching result;
The structural representation of Fig. 3 (a) when Fig. 3 (c) is three kinds of system shown in Figure 2 concrete realizations;
Fig. 4 reports the structural representation of entity for embodiment of the invention mid band switching result;
Fig. 5 is the report flow sketch map of example one mid band switching result of the present invention;
Fig. 6 is the report flow sketch map of example two mid band switching results of the present invention;
Fig. 7 is the report flow sketch map of example three mid band switching results of the present invention;
Fig. 8 is the report flow sketch map of example four mid band switching results of the present invention;
Fig. 9 is the report flow sketch map of example five mid band switching results of the present invention;
Figure 10 is the report flow sketch map of example six mid band switching results of the present invention;
Figure 11 is the report flow sketch map of example seven mid band switching results of the present invention;
Figure 12 is the report flow sketch map of example eight mid band switching results of the present invention.
Embodiment
Channel handoff procedure in the embodiment of the invention can be that user terminal is initiated as required temporarily, perhaps also can be the strategy according to user terminal or network, has set after regularly channel is watched, and the channel of being initiated by network side or user terminal switches.
For making the object of the invention, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, to further explain of the present invention.
Fig. 1 is the exemplary process diagram of the report method of embodiment of the invention mid band switching result.As shown in Figure 1, this flow process comprises the steps:
Step 101, channel switching result report entity to obtain the channel switching result of user terminal.
When the channel switching takes place; User terminal sends channel switch request to basic forwarding capability/basic control function entity (EFF/ECF); EFF/ECF carries out scope check according to the channel authority information of the user terminal that obtains to the channel switch request from user terminal.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel supply user terminal to receive new Media Stream.It is thus clear that user terminal and EFF/ECF all can be known channel switching result, so the channel switching result in the present embodiment reports process that following two kinds of situation can be arranged:
Situation one: it is user terminal that channel switching result reports entity.Be that user terminal directly reports SCF with the channel switching result of self.During concrete the realization; When user terminal to send up was given SCF, other network entity also can be passed through in the centre, but other network entity can carry out transparent transmission by a channel switching result with user terminal; And do not process, therefore can be called for short is that user terminal directly reports SCF with the channel switching result of self.Also can there be similar situation in following situation in the present embodiment.
Situation two: it is P-CSCF that channel switching result reports entity, and then the P-CSCF mode of obtaining the channel switching result of user terminal can have two kinds.Mode one: P-CSCF obtains that user terminal reports after channel switch to be accomplished the channel switching result of self; Mode two: P-CSCF obtains the channel switching result of the user terminal of being accepted that EFF/ECF that RACS transmits reports.Mode three: P-CSCF obtains the channel switching result of the user terminal of being accepted that EFF/ECF reports.Respectively above-mentioned three kinds of modes are described in detail below.
Mode one: user terminal reports P-CSCF with the channel switching result of self after accomplishing the channel switching.
Give the correct time on concrete, user terminal can report by dialogue-based initializtion protocol (SIP).And can be after accomplishing the channel switching, directly the channel switching result with self reports P-CSCF; Perhaps also can after accomplishing channel and switching, start preset timer, and before this timer expiry, not carry out new channel when switching, self channel switching result is reported P-CSCF.Further, before this timer expiry, carried out new channel and switched, then restarted timer, and before this timer expiry, do not carried out new channel when switching, self channel switching result has been reported P-CSCF.
Mode two: EFF/ECF reports RACS with the channel switching result of the user terminal of being accepted, and by RACS the channel switching result of user terminal is reported P-CSCF.
Wherein, when EFF/ECF reported RACS with the channel switching result of the user terminal of being accepted, after can switching at the channel at accepted user terminal, the channel switching result with user terminal reported RACS immediately; Perhaps also can be after the channel at accepted user terminal switches, start preset timer, and when before this timer expiry, not receiving the new channel switch request of said user terminal, the channel switching result of user terminal is reported RACS.
Further; Before this timer expiry, receive the channel switch request that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of user terminal is sent to RACS.
Equally, when RACS reports P-CSCF with the channel switching result of user terminal, can be after receiving the channel switching result of user terminal, the channel switching result with user terminal reports P-CSCF immediately; Perhaps also can be after receiving the channel switching result of user terminal, start preset timer, and when before this timer expiry, not receiving the new channel switching result of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Further; Before this timer expiry, receive the channel switching result that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new channel switching result of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Wherein, user terminal is initiated channel switch request based on Internet Group Management Protocol (IGMP).
Mode three: EFF/ECF directly reports P-CSCF with the channel switching result of the user terminal of being accepted.
Wherein, when EFF/ECF reported P-CSCF with the channel switching result of the user terminal of being accepted, after can switching at the channel at accepted user terminal, the channel switching result with user terminal reported P-CSCF immediately; Perhaps also can be after the channel at accepted user terminal switches, start preset timer, and when before this timer expiry, not receiving the new channel switch request of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Further; Before this timer expiry, receive the channel switch request that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of user terminal is sent to P-CSCF.
Wherein, user terminal is initiated channel switch request based on Internet Group Management Protocol (IGMP).
Step 102, channel switching result report entity that the channel switching result of the user terminal that is received is reported SCF.
In this step, specifically report process to be: channel switching result reports entity to give SCF with the channel switching result of the user terminal that is received through issue (PUBLISH) message in the Session Initiation Protocol or information (Info) message or instant (Message) information reporting.
Perhaps; If it is not unique in the group network system professional SCF being provided; And centrally may pass through a plurality of application servers; SCF then in order to guarantee that channel switching result information can arrive provides professional; Can be reported the channel handover event of entity subscribes user terminal in the present embodiment by SCF in advance to channel switching result, then in this step, channel switching result reports entity can the channel switching result of the user terminal that is received be reported the SCF of the channel handover event of having subscribed to user terminal.Specifically report process the channel switching result of the user terminal that is received to be given the SCF of the channel handover event of having subscribed to user terminal through the Notify information reporting in the Session Initiation Protocol for: channel switching result reports entity.
Further, the SCF in the present embodiment can be further after receiving the channel switching result of user terminal, need determine whether the change session, if desired, and the modification process of initiation session then.Because channel switches the variation that may cause resources such as QoS, bandwidth, can be invited with the transmission of satisfying the new channel content this moment by the modification process of SCF active initiation session.
And/or, SCF can be also can be after receiving the channel switching result of user terminal, the channel switching result according to the user terminal that receives carries out viewership statistics and/or charging and/or presence service etc.
More than the report method of embodiment of the invention mid band switching result is described in detail, again the reporting system of embodiment of the invention mid band switching result is described in detail below.
Fig. 2 is the exemplary block diagram of the reporting system of embodiment of the invention mid band switching result.As shown in Figure 2, this system comprises: channel switching result reports entity and SCF.
Wherein, channel switching result reports entity to be used to obtain the channel switching result of user terminal, and the channel switching result of the user terminal that is obtained is reported SCF.
SCF is used to receive the channel switching result that reports the user terminal of entity from channel switching result.
Wherein, channel switching result reports entity can be P-CSCF, also can be user terminal.
If it is P-CSCF that channel switching result reports entity, then this system can further comprise: EFF/ECF and RACS shown in Fig. 3 (a).
Wherein, EFF/ECF is used for the channel switching result of the user terminal of being accepted is reported RACS.During concrete the realization, EFF/ECF receives the channel switch request from user terminal, and according to the channel authority information of the user terminal that obtains, the channel switch request from user terminal is carried out scope check.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel supply user terminal to receive new Media Stream.Afterwards, can the channel switching result of this user terminal be reported RACS.Specifically reporting process can be that the channel switching result with user terminal reports RACS immediately after the channel at accepted user terminal switches; Perhaps also can be after the channel at accepted user terminal switches, start preset timer, and when before this timer expiry, not receiving the new channel switch request of said user terminal, the channel switching result of user terminal is reported RACS.
Further; Before this timer expiry, receive the channel switch request that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of user terminal is sent to RACS.
RACS is used to receive the channel switching result of the user terminal that EFF/ECF reports, and the channel switching result of the user terminal that is received is reported P-CSCF.Give the correct time on concrete, can be after receiving the channel switching result of user terminal, the channel switching result with user terminal reports P-CSCF immediately; Perhaps also can be after receiving the channel switching result of user terminal, start preset timer, and when before this timer expiry, not receiving the new channel switching result of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Further; Before this timer expiry, receive the channel switching result that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new channel switching result of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Perhaps, this system can further comprise shown in Fig. 3 (b): user terminal, be used for after accomplishing channel and switching, and self channel switching result is reported P-CSCF.Give the correct time on concrete, user terminal can report by dialogue-based initializtion protocol (SIP).And can be after accomplishing the channel switching, directly the channel switching result with self reports P-CSCF; Perhaps also can after accomplishing channel and switching, start preset timer, and before this timer expiry, not carry out new channel when switching, self channel switching result is reported P-CSCF.
Further, before this timer expiry, carried out new channel and switched, then restarted timer, and before this timer expiry, do not carried out new channel when switching, self channel switching result has been reported P-CSCF.
Perhaps, this system can further comprise: EFF/ECF shown in Fig. 3 (c).
Wherein, EFF/ECF is used for the channel switching result of the user terminal of being accepted is reported P-CSCF.During concrete the realization, EFF/ECF receives the channel switch request from user terminal, and according to the channel authority information of the user terminal that obtains, the channel switch request from user terminal is carried out scope check.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel supply user terminal to receive new Media Stream.Afterwards, can the channel switching result of this user terminal be reported P-CSCF.Specifically reporting process can be that the channel switching result with user terminal reports P-CSCF immediately after the channel at accepted user terminal switches; Perhaps also can be after the channel at accepted user terminal switches, start preset timer, and when before this timer expiry, not receiving the new channel switch request of said user terminal, the channel switching result of user terminal is reported P-CSCF.
Further; Before this timer expiry, receive the channel switch request that this user terminal is new; Then restart timer, and when before this timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of user terminal is sent to P-CSCF.
SCF need to determine whether the change session further according to the channel switching result of the user terminal that receives in addition, if need change session, the then modification process of initiation session.Because channel switches the variation that may cause resources such as QoS, bandwidth, can be invited with the transmission of satisfying the new channel content this moment by the modification process of SCF active initiation session.And/or SCF also can charge and/or viewership statistics and/or presence service etc. according to the channel switching result of the user terminal that receives.
During concrete the realization, channel switching result reports the entity can be as shown in Figure 4, specifically comprises: switching result acquisition module and switching result reporting module.
Wherein, the switching result acquisition module is used to obtain the channel switching result of user terminal.
The switching result reporting module is used for the channel switching result of the user terminal that is obtained is reported.
Further; This entity also can comprise: timer module is used for after the switching result acquisition module obtains the channel switching result of user terminal, starting the timer of self; And when timer reaches preset duration, send announcement information to the switching result reporting module.
Then the switching result reporting module is carried out the said operation that the channel switching result of user terminal is reported when receiving said announcement information.
Wherein, channel switching result reports entity can be user terminal, also can be P-CSCF.
When channel switching result reports entity to be P-CSCF; With describe in the said system consistent; The switching result acquisition module receives self the channel switching result from user terminal to send up, or receives the channel switching result that RACS transmits the user terminal of being accepted of EFF/ECF.
Be described in detail through report method, system and the entity of several concrete examples below above-mentioned channel switching result.
Example one:
It is P-CSCF that channel switching result in this example system reports entity.When EFF/ECF directly reports, and RACS starts preset timer before P-CSCF reports channel switching result; And the SCF in this example is in advance to the channel handover event at P-CSCF booking reader terminal.Fig. 5 shows the report flow sketch map of example one mid band switching result of the present invention.As shown in Figure 5, this flow process comprises the steps:
Step 501, live telecast (LTV) session are set up and are accomplished.
Step 502 to step 503, SCF sends the channel handover event of subscribing to (Subscribe) message subscribing user to P-CSCF.
Step 504, user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 505 to step 506, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 507, ECF/EFF reports the channel switching result of this user terminal to give RACS.
Step 508 to step 509, RACS opening timing device when before timer expiry, not receiving the new switching result of user terminal, reports the channel switching result of this user terminal to give P-CSCF.
Step 510, P-CSCF notifies the channel switching result of user terminal to SCF through notice (Notify) message.
Step 511, SCF returns the 200OK response message.
Step 512, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example two:
It is user terminal that channel switching result in this example system reports entity, and the SCF in this example is in advance to the channel handover event at user terminal booking reader terminal.Fig. 6 shows the report flow sketch map of example two mid band switching results of the present invention.As shown in Figure 6, this flow process comprises the steps:
Step 601, LTV session are set up and are accomplished.
Step 602 to step 603, SCF sends out Subscribe message subscribing user's channel handover event to user terminal.
Step 604, user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 605 to step 606, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 607, user terminal opening timing device, waiting timer is overtime.(this step is optional step)
Step 609, SCF returns the 200OK response message.
Step 610, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example three:
It is P-CSCF that channel switching result in this example system reports entity.When EFF/ECF directly reports, and RACS starts preset timer before P-CSCF reports channel switching result.Fig. 7 shows the report flow sketch map of example three mid band switching results of the present invention.As shown in Figure 7, this flow process comprises the steps:
Step 701, session are set up and are accomplished, in carrying out.
Step 702, user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 703 to step 704, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 705, ECF/EFF reports the channel switching result of this user terminal to give RACS.
Step 706 to step 707, RACS opens time-delay and reports timer, when before timer expiry, not receiving the new switching result of user terminal, reports the channel switching result of this user terminal to give P-CSCF.
Step 709, SCF returns the 200OK response message.
Step 710, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example four:
It is P-CSCF that channel switching result in this example system reports entity.When EFF/ECF starts preset timer before RACS reports channel switching result, and RACS directly reports.Fig. 8 shows the report flow sketch map of example four mid band switching results of the present invention.As shown in Figure 8, this flow process comprises the steps:
Step 801, session are set up and are accomplished, in carrying out.
Step 802, the user initiates the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 803 to step 804, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 805 to step 806, ECF/EFF opens time-delay and reports timer, when treating before the timer expiry the new switching in accepted user terminal not, reports the channel switching result of this user terminal to give RACS.
Step 807, RACS gives the channel switching result of this user terminal and reports P-CSCF.
Step 810, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example five:
It is P-CSCF that channel switching result in this example system reports entity, and the SCF in this example is in advance to the channel handover event at P-CSCF booking reader terminal.Fig. 9 shows the report flow sketch map of example five mid band switching results of the present invention.As shown in Figure 9, this flow process comprises the steps:
Step 901, LTV session are set up and are accomplished.
Step 902 to step 903, SCF sends out Subscribe message subscribing user's channel handover event to P-CSCF.
Step 904, user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 905 to step 906, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 907, user terminal opening timing device, waiting timer is overtime.(this step is optional step)
Step 911, SCF returns the 200OK response message.
Step 912, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example six:
It is P-CSCF that channel switching result in this example system reports entity, and the SCF in this example is in advance to the channel handover event at P-CSCF booking reader terminal, and EFF/ECF starts preset timer before P-CSCF reports channel switching result.Figure 10 shows the report flow sketch map of example six mid band switching results of the present invention.Shown in figure 10, this flow process comprises the steps:
Step 1001, live telecast (LTV) session are set up and are accomplished.
Step 1002 to step 1003, SCF sends the channel handover event of subscribing to (Subscribe) message subscribing user to P-CSCF.
Step 1004, user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 1005 to step 1006, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 1007 to step 1008, ECF/EFF opening timing device when before timer expiry, not receiving the new switching result of user terminal, reports the channel switching result of this user terminal to give P-CSCF.
Step 1009, P-CSCF notifies the channel switching result of user terminal to SCF through notice (Notify) message.
Step 1010, SCF returns the 200OK response message.
Step 1011, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example seven:
It is P-CSCF that channel switching result in this example system reports entity, and EFF/ECF starts preset timer before P-CSCF reports channel switching result.Figure 11 shows the report flow sketch map of example seven mid band switching results of the present invention.Shown in figure 11, this flow process comprises the steps:
Step 1101, live telecast (LTV) session are set up and are accomplished.
Step 1102 user terminal is initiated the channel handover operation, sends IGMP message to ECF/EFF, wherein carries the multicast address of new channel, and promptly user terminal sends channel switch request to ECF/EFF.
Step 1103 to step 1104, ECF/EFF carries out scope check according to the user's who obtains channel authority information to user's channel switch request.If scope check passes through, the multicast data flow data that the port that then user terminal is belonged to duplicates new channel, user terminal receives new Media Stream.
Step 1105 to step 1106, ECF/EFF opening timing device when before timer expiry, not receiving the new switching result of user terminal, reports the channel switching result of this user terminal to give P-CSCF.
Step 1109, SCF charges according to the result that channel switches, statistics, the presence service judges whether operations such as initiatively initiation session change.
Example eight:
In some cases, when switching has caused the variation of resources such as QoS, bandwidth like channel, need come the initiatively modification process of initiation session, invite with the transmission of satisfying the new channel content by SCF.Figure 12 shows the report flow of example eight mid band switching results of the present invention and the schematic flow sheet that SCF active initiation session is revised.Shown in figure 12, this flow process comprises the steps:
Step 1201, the LTV session is set up normally.
Step 1202, the LTV Media Stream normally is submitted to the terminal use.
Step 1203, user terminal is initiated the handoff procedure of channel, and SCF has been known the switching result of channel.
Concrete implementation procedure in this step can promptly comprise situation cited in example one to the example four for any situation of describing in the step 101 shown in Figure 1.
Step 1204, SCF judges that the QoS behind the switching channels changes, and needs the change procedure of initiation session.
Step 1207, P-CSCF carries out resource reservation according to the SDP Offer information requirements RACS that receives.
Step 1208, UE returns 200OK, and (SDPAnswer) information is replied in the negotiation of carrying Session Description Protocol.
Step 1209, P-CSCF carries out resource reservation according to the SDP Answer information requirements RACS that receives.
Step 1210, P-CSCF sends 200OK message and gives SCF.
In the above-mentioned example eight; The switching that the reason of its triggering can be not limited to channel causes the variation of resource; Also can be strategy, can set regularly channel like the user and watch, when arriving a certain specific time according to network or user; Come the change procedure of active initiation session or set up process by network, realize that channel regularly switches or professional foundation.If network is initiatively initiated the professional process of setting up, the Reinvite/Upate message in the then above-mentioned example eight should be invitation (Invite) message.
In addition, step 1205 to the step 1210 in the above-mentioned example eight also can be by SCF informing user terminal (like Info or the Message message informing through SIP), is come the change procedure of active initiation session or is set up process by UE.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely preferred embodiment of the present invention; In the practical application; SCF can also be other sip application server (AS), so the embodiment of the invention is not to be used to limit protection scope of the present invention, and is all within spirit of the present invention and principle; Any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. report method based on the channel switching result under the IPTV framework of IP Multimedia System is characterized in that this method comprises:
Channel switching result reports entity to obtain the channel switching result of user terminal, and said channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
Said channel switching result reports entity to give business control function body SCF with the channel switching result of the said user terminal that is obtained through the PUBLISH in the Session initiation protocol SIP or INFO or MESSAGE information reporting,
It is said user terminal or Proxy Call Session Control Function P-CSCF that wherein said channel switching result reports entity.
2. the method for claim 1; It is characterized in that the channel switching result that said channel switching result reports entity to obtain user terminal is: said P-CSCF receives the channel switching result from the said user terminal of resource and accommodation control subsystem RACS; The channel switching result of said user terminal from RACS is: basic forwarding capability/basic control function EFF/ECF is according to the channel switch request of said user terminal; After accepting the channel switching of said user terminal, report the channel switching result of the user terminal of said RACS.
3. method as claimed in claim 2 is characterized in that, the channel switch request of said user terminal is: the channel switch request that said user terminal is initiated based on Internet Group Management Protocol IGMP.
4. method as claimed in claim 2; It is characterized in that; The channel switching result that said EFF/ECF reports the user terminal of RACS is: after the channel at said EFF/ECF accepted user terminal switches, directly report the channel switching result of the user terminal of RACS;
Perhaps be: after the channel at said EFF/ECF accepted user terminal switches, start preset timer, and when before said timer expiry, not receiving the new channel switch request of said user terminal, report the channel switching result of the user terminal of RACS.
5. method as claimed in claim 4; It is characterized in that; This method further comprises: EFF/ECF receives the channel switch request that said user terminal is new before said timer expiry; Then restart said timer, and when before said timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of said user terminal is sent to RACS.
6. method as claimed in claim 2; It is characterized in that; The channel switching result of said user terminal from RACS is: after said RACS receives the channel switching result of said user terminal, directly report the channel switching result of the user terminal of P-CSCF;
Perhaps be: after said RACS receives the channel switching result of said user terminal; Start preset timer; And when before said timer expiry, not receiving the new channel switching result of said user terminal, report the channel switching result of the user terminal of P-CSCF.
7. method as claimed in claim 6; It is characterized in that; This method further comprises: RACS receives the channel switching result that said user terminal is new before said timer expiry; Then restart said timer, and when before said timer expiry, not receiving the new channel switching result of said user terminal, the channel switching result of said user terminal is reported P-CSCF.
8. the method for claim 1; It is characterized in that the channel switching result that said channel switching result reports entity to obtain the user terminal generation is: the channel switching result that reports the user terminal of P-CSCF after the channel at P-CSCF reception EFF/ECF accepted user terminal switches.
9. method as claimed in claim 8; It is characterized in that; The channel switching result that reports the user terminal of P-CSCF after the channel at said EFF/ECF accepted user terminal switches is: after the channel at said EFF/ECF accepted user terminal switches, directly report the channel switching result of the user terminal of P-CSCF;
Perhaps be: after the channel at said EFF/ECF accepted user terminal switches, start preset timer, and when before said timer expiry, not receiving the new channel switch request of said user terminal, report the channel switching result of the user terminal of P-CSCF.
10. method as claimed in claim 8; It is characterized in that; This method further comprises: EFF/ECF receives the channel switch request that said user terminal is new before said timer expiry; Then restart said timer, and when before said timer expiry, not receiving the new handoff request of said user terminal, the channel switching result of said user terminal is sent to P-CSCF.
11. the method for claim 1 is characterized in that, it is Proxy Call Session Control Function P-CSCF that said channel switching result reports entity;
Said channel switching result reports entity to obtain the channel switching result that user terminal takes place: P-CSCF receives user terminal after accomplishing channel and switching, self the channel switching result that directly reports;
Perhaps be: P-CSCF receives user terminal after accomplishing channel and switching, and starts preset timer, and self the channel switching result that before said timer expiry, does not carry out reporting when new channel switches.
12. method as claimed in claim 11; It is characterized in that; This method further comprises: user terminal has carried out new channel and has switched before said timer expiry; Then restart said timer, and before said timer expiry, do not carry out new channel when switching, self channel switching result is reported P-CSCF.
13. method as claimed in claim 11 is characterized in that, self channel switching result of said user terminal to send up is: the dialogue-based initializtion protocol SIP of user terminal reports the channel switching result of self.
14. like each described method in the claim 1 to 13, it is characterized in that this method further comprises: said SCF is according to the channel switching result of the said user terminal that receives, when need confirming the change session, and the modification process of initiation session.
15. like each described method in the claim 1 to 13, it is characterized in that this method further comprises: said SCF carries out viewership statistics and/or charging and/or presence service according to the channel switching result of the said user terminal that receives.
16. the IPTV system based on IP Multimedia System is characterized in that, this IPTV system comprises that channel switching result reports entity and business control function body SCF, wherein:
Said channel switching result reports entity to be used to obtain the channel switching result of user terminal; Give said SCF with the channel switching result of the user terminal that is obtained through the PUBLISH in the conversation initialization Session Initiation Protocol or INFO or MESSAGE information reporting, said channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
Said SCF is used to receive the channel switching result that reports the said user terminal of entity from said channel switching result,
It is said user terminal or Proxy Call Session Control Function P-CSCF that wherein said channel switching result reports entity.
17. IPTV as claimed in claim 16 system is characterized in that,
Further comprise:
Basic forwarding capability/basic control function entity EFF/ECF is used for the channel switching result of the user terminal that is obtained is reported resource and accommodation control subsystem RACS;
RACS is used to receive the channel switching result of the user terminal that said EFF/ECF reports, and the channel switching result of the user terminal that is received is reported said P-CSCF.
18. IPTV as claimed in claim 16 system is characterized in that,
Further comprise:
Basic forwarding capability/basic control function entity EFF/ECF is used for the channel switching result of the user terminal that is obtained is reported said Proxy Call Session Control Function P-CSCF.
19. like each described system in the claim 16 to 18; It is characterized in that said SCF further according to the channel switching result of the user terminal that receives, charges and/or viewership statistics and/or presence service; And/or when confirm needing the change session, the modification process of initiation session.
20. a channel switching result reports entity, it is characterized in that, this channel switching result reports entity to comprise:
The switching result acquisition module is used to obtain the channel switching result of user terminal, and said channel switching result is that said user terminal leaves current multicast channel and adds another multicast channel;
Timer module is used for after said switching result acquisition module obtains said channel switching result, starting the timer of self, and when said timer reaches preset duration, sends announcement information to the switching result reporting module;
The switching result reporting module; Be used for when receiving said notification message; The channel switching result of said user terminal is reported business control function body SCF, and it is Proxy Call Session Control Function P-CSCF or said user terminal that wherein said channel switching result reports entity.
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| JP2000196592A (en) * | 1998-12-28 | 2000-07-14 | Toshiba Corp | Network connection device |
| CN1368829A (en) * | 2001-02-08 | 2002-09-11 | 华为技术有限公司 | Channel soft-switching method for global mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1209018A (en) * | 1997-08-19 | 1999-02-24 | 北海市自动化研究所 | Charging system two-way automatic programme selection for cable TV |
| JP2000196592A (en) * | 1998-12-28 | 2000-07-14 | Toshiba Corp | Network connection device |
| CN1368829A (en) * | 2001-02-08 | 2002-09-11 | 华为技术有限公司 | Channel soft-switching method for global mobile communication system |
| CN1496142A (en) * | 2002-08-16 | 2004-05-12 | 北京三星通信技术研究有限公司 | Conversion method of MBMS point-to-point channel and point-to-multipoint channel |
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