CN101060532B - Internet network TV service information transmission method - Google Patents
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Abstract
The transmission method for IPTV business system message comprises: packing IPTV business message into SIP entity including the message head and body data for transmission, wherein, message head includes a method name mark field for the business message type, and the body data includes relative field message. This invention improves openness, extensibility and security for IPTV business system, and can provide large-scale running-type IPTV business system.
Description
Technical field
The present invention relates to communication and field of computer technology, refer more particularly to transmission and its implementation of IPTV (Internet TV) business information under NGN (next generation network) framework.
Background technology
IPTV has experienced the three phases of Pilot office, half commercialization to commercialization.At present, the IPTV in increasing city and area constantly distributes telephone numbers and is commercial, for satisfying the growing culture life demand of user, improves user's ARPU (every user's average income) and is bringing into play enormous function for operator increases income.Along with development of technologies, the IPTV business that can run, can manage, open the large-scale operation level of intercommunication, standard unification is becoming new growth requirement.But, because the initial stage lacks industry standard, the market access requires reasons such as low, there are some problems in the reliability, stability, opening, extended capability and the safe and secret ability that cause being at present the IPTV operation system of half commercialization/commercialization, bring inconvenience and lose to the user, can manage, manageability is poor, therefore, how to solve the IPTV operation system opening, extensibility, can manage, can run and become the technology focus that those skilled in the art are badly in need of solving.
As everyone knows,, introduced IMS domain, be called for short IMS in 3GPP (third generation partner program) Release 5 (R5) stage.IMS is superimposed upon on the network of packet domain, is made up of CSCF (CSCF), MGCF (MGCF), MRF (media resource function) and HSS functional entitys such as (home signature user servers).Wherein, CSCF can be divided into S-CSCF (serving CSCF), P-CSCF (proxy CSCF) and three logic entities of I-CSCF (inquiry CSCF) again.S-CSCF is the service switching center of IMS, carries out session control, and peace preservation association's speech phase is in charge of user profile, produces charge information etc.; P-CSCF is the access point of terminal user access to IMS, finishes user's registration, is responsible for QoS (service quality) control and safety management etc.; I-CSCF is responsible for the intercommunication between the IMS territory, and network topology and configuration are externally hidden in the distribution of management S-CSCF, produce metering data etc.The MGCF control gateway realizes the intercommunication of IMS network and other network; MRF provides media resource, as the folding and unfolding sound, and encoding and decoding and multimedia conferencing bridge etc.; HSS is a customer data base, storage IMS user's subscription data and user's configuration information etc.
Because it is irrelevant that the network configuration of IMS has been accomplished with the bottom bearer network, therefore the IMS network of 3GPP definition also can be applied on other packet network outside the packet field network of 3GPP definition, for example, NGN, Deng, realized using the independence of terminal type with the user, and and the independence of access network type.Therefore, do not limit IMS here and only be applied in relevant network of 3GPP and the application, the access network of other type and the business of bearer network and application can realize that also the present invention just provides such example with the IMS framework.
The user of the IMS business that each has been contracted has distributed one or more private user identity IMPI by home network operator, be used for using at registration, mandate, management and charging process, IMPI uses the NAI form, each IMS user also has one or more public user identity IMPU, sign oneself finds the other side when being used for other telex network.Private user identity is generally externally not open, and public user identity is externally disclosed, uses in the conversation procedure that uses all kinds of business.
HSS is the most important database of each user, in store all with signatory relevant information, be used to support each network entity to calling out and the processing of session, the information of its preservation comprises: user ID, customer position information, user description information (User Profile Information) etc.A home network can have one or more HSS, and the quantity of HSS depends on mobile contracted user's quantity, the capacity of the network equipment and concrete networking situation.Between a plurality of entities interface is arranged in HSS and the network.
In IMS, SIP (session begins agreement) agreement is used as the signaling control protocol of IP multimedia session and sets up, revises and delete IP multimedia session, supports multicast and unicast technique, satisfies the demand of user to multimedia communication.The IMS network is compared with common network, outstanding feature be exactly the IMS network be one can run, can manage, open carrier class network, contracted the user of IMS Network by paying certain expense, can obtain the professional skill that service quality guarantees (QoS), enjoy other value-added service that operator provides simultaneously.
Session Initiation Protocol has many characteristics, for example, supports conversation description, allows the participant to reach an agreement on one group of compatible media types, supports user's mobility simultaneously to user's current location by agency and redirect request.Session Initiation Protocol does not bundle with any specific meeting control protocol.Therefore, Session Initiation Protocol relies on plurality of advantages such as it is simple, be easy to expand, be convenient to realize more and more to obtain the favor of industry.Become among aforesaid NGN and the IMS one of the most active important protocol, and occurred client software and the intelligent multimedia terminal of the increasing SIP of support on the market, and server and the Softswitch realized with Session Initiation Protocol.
Therefore, along with popularizing and growth requirement of IPTV business, how to utilize the technical characterstic of Session Initiation Protocol, develop as early as possible and a kind ofly can overcome and solve the new IPTV operation system that prior art exists fail safe, opening, the many defectives of extensibility, become the technological break-through point that scientific and technical personnel in the industry are badly in need of solving.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of message structure and transmission method thereof of the IPTV business information transmission under the NGN framework, is used to send the request message of IPTV operation system, and response message.
In order to solve the problems of the technologies described above, the present invention proposes a kind of transmission method of internet network television service system business information, dialogue-based beginning agreement, the business information of described Internet TV IPTV operation system is encapsulated in session begins that the back sends in the message body of agreement SIP, this sip message body comprises message body head and message body data, comprise a method name identifier word section in the wherein said message body head, identify the type of this business information, comprise the field information relevant in the described message body data with this business information.
Further, said method also can have following characteristics, and the field in the described message body head comprises one or more in description, sequence number, Transaction Identifier, message-length, version number, the reservation position.
Further, said method also can have following characteristics, and described description field is the detailed description of described method name, is used for system maintenance; Described sequence number field is the serial number of method name; Described Transaction Identifier field is the sign of some affairs; Described message length field is the length of this message; Described version number is the version number of this message, and described reservation position is that system is used as subsequent expansion.
Further, said method also can have following characteristics, and described sip message volume data field comprises and professional relevant various interface that the type of described message body data structure and interface is irrelevant.
Further, said method also can have following characteristics, and described interface is channel creation interface or service beginning interface.
Further, said method also can have following characteristics, and described business information is service management information or electronic program list information or media service information or content distributing information.
The present invention proposes the message structure that a kind of session begins agreement SIP, be used for the transmission of IPTV business information, comprise message body head and message body data, wherein, comprise a method name identifier word section in the described message body head, identify the type of described IPTV business information, comprise the field information relevant in the described message body data with this business information.
Further, above-mentioned message structure also can have following characteristics, and the field in the described message body head comprises one or more in description, sequence number, Transaction Identifier, message-length, version number, the reservation position.
Further, above-mentioned message structure also can have following characteristics, and described description field is the detailed description of described method name, is used for system maintenance; Described sequence number field is the serial number of method name; Described Transaction Identifier field is the sign of some affairs; Described message length field is the length of this message; Described version number is the version number of this message, and described reservation position is that system is used as subsequent expansion.
Further, above-mentioned message structure also can have following characteristics, and described sip message volume data field comprises and professional relevant various interface that the type of described message body data structure and interface is irrelevant.
Compared with prior art, adopt the method based on Session Initiation Protocol transport service information of the present invention, make the IPTV operation system have opening, extensibility, fail safe, be convenient to provide the IPTV operation system of extensive operation level.
Description of drawings
Fig. 1 is the schematic diagram of the embodiment of the invention based on Session Initiation Protocol communication;
Fig. 2 is the structural representation of embodiment of the invention sip message body.
Embodiment
In the IPTV operation system, system forms and comprises that Session Initiation Protocol is mainly adopted in the communication between them such as a plurality of modules such as H-CSCF (hypertext call transmission State Control functional entity), SMS (business management system), USS (universal media server), MLSS (medium location services system), APP Server (application server) and set-top box.
H-CSCF comprises EPG (electronic program list) and P-CSCF, and it has that IPTV program/channel is showed and functions such as professional navigation, program/channel search, oneself service of user; On the other hand, it also has following function:
1) can select the user only to be registered to the IMS territory according to the signatory situation of user, only be registered to the IPTV territory, or both's registration;
2), replace the IPTV terminal to carry out functions such as SIP registration and initiation/reception SIP session in the IMS territory as SIP UA (user agent);
3) can realize bi-directional conversion between Session Initiation Protocol and other agreement, for example, convert HTTP (HTML (Hypertext Markup Language)) to Session Initiation Protocol, and convert Session Initiation Protocol to HTTP etc., to finish the function in IPTV terminal access to IMS territory;
4) has the function that charge information is provided to the IMS territory.
USS is the universal media server, for the equipment of the required media resource of various IPTV business is provided under the IMS system, for example, media store, stream service and content distribution/transmission, and playback, recording, DTMF (dual-tone multifrequency signaling) collect the digits, fax, meeting, TTS (phonetic synthesis, Text To Speech) and function such as ASR (automatic speech recognition, Automated Speech Recognition), video playback, video record, video conference.MRF network element under the IMS framework also is from media server evolution in general.
MLSS has the function of CDN (media delivery), and functions such as medium location, content control and service control are provided, and is responsible for overall content control, global service control and VCDN (virtual content distributing network) management, etc.It with USS between to communicate by letter be exactly to adopt Session Initiation Protocol.
SMS is exactly the IPTV business management system, comprises user management and Content Management etc.It also has the function of the defined HSS of IMS.
APP Server comprises that business authentication mandate, charging bill generate, statistical analysis.It with USS between communicate by letter and also adopt Session Initiation Protocol to carry out.
Fig. 1 has provided an example that uses the Session Initiation Protocol conversation, and the parameter of its Session Initiation Protocol head is as follows:
INVITE?sip：Alice.Smith@domain.com?SIP/2.0
Via：SIP/2.0/UDP?wsl.domain2.com：5060；branch＝z9hG4bK74gh5
Max-Forwards：70
From：Bob<sip：Bob.Brown@domain2.com>；tag＝9hx34567sl
To：Alice<Alice.Smith@domain.com>
Call-ID：6328776298220188511@192.0.100.2
CSeq：1INVITE
Contact：<sip：bob@192.0.100.2>
Content-Type：application/sdp
Content-Length：151
v＝0
o＝bob?2890844526?289084526?IN?IP4?wsl.domian2.com
s＝-
c＝IN?IP4?192.0.100.2
t＝00
m＝audio?20000?RTP/AVP?0
a＝rtpmap：0?PCMU/8000
Wherein,
Via:Via follows the tracks of all acting servers of a request message process;
Max-Forwards:Max-Forwards represents the largest loop number, is used for avoiding route circulation, and every through just its value being subtracted 1 after the intact request of a proxy server processes, when it became 0, request message just was dropped.
From:From represents request message promoter's URI.
To:To represents the URI of request message destination.
Call-ID:Call-ID provides a unique label for the sip message exchange.
CSeq:CSeq comprises a serial number and a message name, is used for matching request and response message.
Contact:Contact represents the contact address.
Content-Type: the type of expression conversation description.
Content-Length: the length of presentation-entity byte.
Fig. 2 has provided a kind of structure and implementation method of transmitting based on the IPTV business information of Session Initiation Protocol under the NGN framework.This method is divided into two parts with the message body of Session Initiation Protocol: message body head and message body data.
The IPTV business information is encapsulated in the message body of Session Initiation Protocol, transmission for adaptive IPTV business information, the IPTV business information is divided according to type, be divided into service management info class, EPG info class, media service information class and content distributing information class etc., distinguish by method name (CmdCode) identification field of a Session Initiation Protocol message body field; Sorted message body data are cut apart by piece, distinguished by the data block identification field.
The message body head of Session Initiation Protocol comprises the method file-name field, also comprises in each field such as description, sequence number, affairs ID (sign), message-length, version number, reservation position one or more; The message body data of Session Initiation Protocol comprise and professional relevant field information that for example, channel creation interface, service begin interface etc.Session Initiation Protocol message body data structure provided by the invention, irrelevant with the type of interface, be suitable for various message interfaces, for example, the WINTCP interface, etc.
A described Session Initiation Protocol message body field method name (CmdCode), be the title of the method that realizes the IPTV business, for example the content release in the service management info class, channel creation, channel deletion, content-on-demand VOD, charging, authentification of user, performance statistics report, plant maintenance; Operations such as the real-time recorded broadcast in the content dispatch messages class, content wear out, content distribution.
A described Session Initiation Protocol message body field description (CmdName) for the detailed description of this method name, is convenient to system maintenance.
A described Session Initiation Protocol message body field sequence number (CSeq) is the serial number of method name, and promptly sequencing is equivalent to serial number.。
A described Session Initiation Protocol message body field affairs ID (TransactionID) is the sign of some affairs.
A described Session Initiation Protocol message body field message-length (Length) is the length of this message.
A described Session Initiation Protocol message body field version number (Version) is the version number of this message.
Described Session Initiation Protocol message body field keeps position (Reserved), for system give over to after the expansion use.
As mentioned above, adopt the message of Session Initiation Protocol transmission IPTV operation system between each module, for example, content release, the beginning of chargeing, charging end, channel creation, authentification of user, recorded broadcast in real time, Deng, send again after being encapsulated in described message in the Session Initiation Protocol message structure.
As an example, following table 1 has provided the Field Definition of a channel creation interface and has used the implementation method of the transmission IPTV business information of Session Initiation Protocol.
Table 1
| Interface name | The channel creation interface |
| The interface supplier | USS media services subsystem |
| The interface user | The MLSS subsystem |
| Interface is described | The MLSS subsystem calls this interface USS media services subsystem is carried out channel creation/setting. |
Each field description of this interface requests message is as shown in table 2 below:
Table 2
| Field name | Type | Explanation of field |
| VCDN_ID | Char | VCDN identifies default value: " 000000000000000000 " |
| VCDN_Node_ID | Char | The VCDN node ID |
| CDN_Node_ID | Char | The server zone group # |
| Channel_ID | Char | Channel number |
| Channel_Code | Integer | Channel is at the coding of CDN inside |
| Channel_Type | DWORD | Channel type 0: direct broadcast band 1: wheel is broadcast channel |
| Valid_DateTime | Char | Establishment/configuration effective time |
| Create_Or_Config | BYTE | Create or configuration sign 0: create 1: configuration |
| IF_Shared | WORD | 0: shared |
| IF_Relay | WORD | Relaying 0 whether: relaying 1: relaying not |
| IF_Record | WORD | Whether recorded broadcast 0: recorded broadcast 1: not recorded broadcast |
| SdpFileNameForUnicast | LV String | SDP (Session Description Protocol) filename that uses during by mode of unicast visit channel |
| SdpFileNameForMulticast | LV String | The SDP file name of using when visiting channel by the multicast mode |
| CastMode | Integer | Sending mode: 0-does not support clean culture and multicast (empty channel) 1-clean culture 2-multicast 3-clean culture and multicast to support |
| RecordFileName | LV String | The filename of preserving during storage |
| ChannelDuration | Integer | Channel is opened duration, unit second.-1 expression channel duration does not limit. |
| SdpFileContentForUnicast | LV String | Open channel first for empty; When reopening channel, the SDP content of channel is opened in expression first.(clean culture) |
| SdpFileContentForMulticast | LV String | Open channel first for empty; When reopening channel, the SDP content of channel is opened in expression first.(multicast) |
| StartMulticastAtOpen | Integer | Open channel and whether send data to multicast address: 0-does not send; 1-sends |
| Precede_IP | Char | Last one IP that jumps (relaying be masked as 0 o'clock effective) |
| Precede_Port | DWORD | Last one jumps port (effective when relaying flag bit 0) |
| MultiCast_IP | Char | Multicast address |
| MultiCast_Port_Count | BYTE | Multicast port number (with the number of the corresponding multicast port of certain multicast IP) default value: 2; An audio frequency, a video |
| MultiCast_Port1 | DWORD | Multicast |
| MultiCast_Port2 | DWORD | Multicast port numbers 2: be defaulted as the video end slogan |
| Start_DateTime | Char | Start-up time the latest |
| Min_Reserve_Space | DWORD | The minimum reservation space |
| Max_Request_Space | DWORD | The maximum space that can ask |
| Min_Reserve_Memory | DWORD | The minimum reservation internal memory |
| Max_Request_Memory | DWORD | Maximum operable internal memory |
| Min_Reserve_ConStream | DWORD | The concurrent number of minimum reservation |
| Max_ConStream | DWORD | The concurrent number of maximum permission |
| Min_Reserve_BandWidth | DWORD | The minimum reservation bandwidth |
| Max_BandWidth | DWORD | The maximum bandwidth that allows |
| Description | Char | The channel explanation |
| IF_Shift | WORD | Time shift sign: 0: time shift 1: not time shift |
| IF_Packge_changed | WORD | Transcoding whether: |
| ? | ? | 0: transcoding 1: transcoding not |
| IF_RTSP | WORD | RTSP (real-time stream media protocol) mode: 0: |
| …… | …… | ?…… |
The response message of this interface is described below shown in the table 3:
Table 3
| Field name | Type | Explanation of field |
| AckCode | DWORD | Answer code 0: successfully receive message 1: unusual |
| VCDN_ID | Char | VCDN identifies default value: " 000000000000000000 " |
| VCDN_Node_ID | Char | The VCDN node ID |
| CDN_Node_ID | Char | The server zone group # |
| Channel_ID | Char | Channel number |
| Channel_Code | Integer | Channel is at the coding of CDN inside |
| …… | …… | …… |
Under the NGN framework, when using Session Initiation Protocol to transmit above-mentioned channel creation interface requests message and its response message, the field of above-mentioned request message and the field of response message all are encapsulated in respectively in the message body data of Session Initiation Protocol, and one of them field of message body head, for example: method name (CmdCode), fill in the code (0002) of channel creation interface requests message code (0001) and its response message respectively, respectively expression " channel creation request interface " and " channel creation response interface ".
Claims (6)
1. the transmission method of an internet network television service system business information, dialogue-based beginning agreement, the business information of described Internet TV IPTV operation system is encapsulated in session begins that the back sends in the message body of agreement SIP, this sip message body comprises message body head and message body data, comprise a method name identifier word section in the wherein said message body head, identify the type of this business information, comprise the field information relevant in the described message body data with this business information.
2. the method for claim 1 is characterized in that: the field in the described message body head comprises one or more in description, sequence number, Transaction Identifier, message-length, version number, the reservation position.
3. method as claimed in claim 2 is characterized in that: described description field is the detailed description of described method name, is used for system maintenance; Described sequence number field is the serial number of method name; Described Transaction Identifier field is the sign of some affairs; Described message length field is the length of this message; Described version number is the version number of this message, and described reservation position is that system is used as subsequent expansion.
4. the method for claim 1 is characterized in that: described sip message volume data field comprises and professional relevant various interface that the type of described message body data structure and interface has nothing to do.
5. method as claimed in claim 4 is characterized in that: described interface is channel creation interface or service beginning interface.
6. the method for claim 1, it is characterized in that: described business information is service management information or electronic program list information or media service information or content distributing information.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| MX2010005624A (en) | 2007-11-30 | 2010-06-01 | Samsung Electronics Co Ltd | Method and apparatus for searching for iptv service relay devices and method and apparatus for interacting with devices. |
| KR20090082068A (en) | 2008-01-25 | 2009-07-29 | 삼성전자주식회사 | Method and apparatus for providing metadata of contents, and method and apparatus for limiting use-authortity of contents |
| US8474024B2 (en) | 2008-01-25 | 2013-06-25 | Samsung Electronics Co., Ltd. | Method and device for playing back media data with limited control |
| EP2259591A4 (en) | 2008-03-28 | 2013-08-14 | Samsung Electronics Co Ltd | Data receiving method and device for applications providing an iptv communications service |
| KR101661210B1 (en) | 2008-07-24 | 2016-09-29 | 삼성전자주식회사 | Method and apparatus for performing IPTV communication service |
| CN101895811A (en) * | 2010-04-23 | 2010-11-24 | 中兴通讯股份有限公司 | Mobile terminal and method and system for controlling mobile terminal television service |
| CN102264002B (en) * | 2011-07-14 | 2013-06-05 | 中山爱科数字家庭产业孵化基地有限公司 | Network adapter of digital household interactive service and realization method thereof |
| CN102347950B (en) * | 2011-09-29 | 2018-02-06 | 中兴通讯股份有限公司 | Communication network provides the method and system of conversational services to internet |
| CN108632478B (en) * | 2017-03-24 | 2021-01-26 | 北京京东尚科信息技术有限公司 | Method and device for counting call details, electronic equipment and readable storage medium |
| CN108134965B (en) * | 2018-01-23 | 2020-09-01 | 重庆大学 | Method for wireless side group broadcast transmission of order broadcasting service |
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