CN100463385C - Transmission method for mobile multimedia broadcast electronic service guide data model - Google Patents
Transmission method for mobile multimedia broadcast electronic service guide data model Download PDFInfo
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Abstract
The method includes following steps: (1) equipment at network side generates electronic service guide data (ESGD) model; (2) packaging data in ESGD model to ESGD payload of one or more ESGD units; (3) multiplexing ESGD units including packaged ESGD model to multiplexing frame in logic channel; (4) modulating multiplexing frame, broadcast radio station transmits the frame to mobile user terminal; and mobile user terminal obtains ESGD model from the frame.
Description
Technical field
The present invention relates to China mobile multi-media broadcasting technology, the multiplex transmission method of the electronic service guide data model that provides for mobile subscriber terminal equipment is provided.
Background technology
At present, global most of mobile operator, the mobile phone TV services of being released based on various heterogeneous networks substantially can be according to being divided into two big classes based on mobile network (2.5G or 3G) or based on the realization of digital broadcast television network.
Based on the mobile phone TV services that the mobile network realizes, some is the live broadcast of Streaming Media form, and some is to specialize in the TV play short-movie that the mobile subscriber downloads, and all plays by multimedia software on user's mobile subscriber terminal.This form has avoided the user will wait for a period of time when watching or listening to Media Stream could download to client to complete file, thereby brings the professional sensory experience of " playing in real time " to the user.As the mobile operator of main body can be own or content integrator and program making merchant by the downstream provide service for the user.Electron service instruction under this mode (ESG) can obtain by the HTTP interactive mode.
Based on digital broadcast television network (satellite/terrestrial digital television network broadcast) or by combine the mobile TV service mode that realizes with the mobile network, need independently digital broadcast television network of one of investment construction, provide service by on mobile phone terminal, increasing corresponding module then.Therefore the similar traditional radio network management mode of this mode is also referred to as the broadcasting and TV pattern.Because the difference of transmission network, this pattern has produced specific requirement to mobile phone terminal.
The application of mobile TV can utilize network capabilities to greatest extent concerning mobile operator, abundant more business is provided; And concerning broadcaster, be the new channel of TV broadcast, can make full use of content resource, the scope that extends one's service realizes the mobile of radio network.Mobile phone TV services will produce a huge consumption market, show that according to external prediction to the whole world in 2010 1.2 hundred million mobile phone television users will be arranged, the number of users of China also will be near 4,000 ten thousand.In the face of huge mobile subscriber group and radio and television customer group, great concern has been dropped into to this business in the Virtual network operator of various countries and device fabrication commercial city, wishes to make its new growth that becomes mobile multi-media service point.
At present, Samsung has released the dual-mode handset based on DMB/CDMA2000EV-DO, and Nokia is also just at the mobile phone TV terminal of active development based on DVB-H.Under this mode, generally the ESG One-to-All Broadcast is pushed to terminal.
Corresponding different Network Transmission modes, the transmission of ESG data also should have its characteristics mutually.In broadcast network system, descending propelling movement ESG data also transmit the data of ESG data model definition simultaneously, and the user obtains by terminal and business is found and used to the ESG information of showing.And correctly resolve, show and use these ESG data, must know the data model of ESG, i.e. the definition of ESG data list structure.In addition, along with the development of business, the ESG data model will change, and these variations must be notified terminal by radio network.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of transmission method of mobile multimedia broadcast electronic service guide data model, the update method of the definition of ESG data model, multiplexing transmission is provided for mobile subscriber terminal equipment, the transmission of specific format ESG file such as compatible XML or data simultaneously is for the expansion that solves the ESG data model provides the important channel.
In order to address the above problem, the present invention proposes a kind of transmission method of mobile multimedia broadcast electronic service guide data model, may further comprise the steps:
(1) network equipment generates electronic service guide data model;
(2) with the data encapsulation of electronic service guide data model in the electron service instruction data payload of one or more electron service instruction datas unit; Write the electron service instruction data payload type of notebook data unit in the electron service instruction head, being used to indicate the electron service instruction data payload is electronic service guide data model or electron service instruction data;
(3) it is unit multiplexed in the multiplexed frame of logic channel to have encapsulated the electron service instruction data of electronic service guide data model;
(4) mobile subscriber terminal is given with the multiplexed frame modulate emission in the broadcast transmission station, and mobile subscriber terminal therefrom obtains electronic service guide data model.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, corresponding each electron service instruction in the electronic service guide data model that generates in the step (1), comprise following information: table name claims length, refers to the byte number length of " table name claims "; Table name claims, the title of the tables of data of expression data model definition; The field description data are promptly described the definition of the field attribute of each table.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, described field description data further comprise Field Count and each field description, and described Field Count refers to the total quantity of the field that table comprises of this field ownership in the described electronic service guide data model; Described each field description comprises following data: the field sequence number is used for representing the position number of this field at its ownership table; Field identification is used to distinguish overall unique label of different field; Field name length is used to represent the length of this field name; Field name is the name of field; Data type, the type of expression electron service instruction data; Also comprise data length when data type is fixed-length field, represent the message length of this field description.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, and described data type comprises the type of this field in table, the value type of data, a kind of or combination in any in the data length type.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, the described electron service instruction data unit that has encapsulated electronic service guide data model has write electron service instruction head and electron service instruction data payload at least, wherein, the electron service instruction head writes the table sign of the electron service instruction of the version number of electron service instruction and this data model correspondence simultaneously.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, when in the step (2) data of electronic service guide data model being encapsulated, adopt a kind of or its combination in the following encapsulation form of presentation, and in the electron service instruction head, identify: table data encapsulation form of presentation with table description type, only use the payload user data transmission in the electron service instruction data unit, and have only the uncorrected data of electronic service guide data model in the payload, this moment, the data model with each electron service instruction sent in different separately data cells respectively; Formatted data encapsulation form of presentation, the uncorrected data of electronic service guide data model is organized and is described as transmitting behind the electron service instruction data file again, comprise again: file mode, the electron service instruction data file that comprises electronic service guide data model information after the need transmission formatting and unique unified resource identifier thereof, the unified resource identifier transmits in the payload user data of electron service instruction data unit, and the electron service instruction data file transmits by the payload user data of electron service instruction data unit or with downloading mode; The data block mode only needs to transmit the electron service instruction data file that comprises electronic service guide data model information with the payload user data of electron service instruction data unit; When using file mode, in the electron service instruction head, write reference identification and show that what transmit in the respective electronic business guide payload is electron service instruction data or unified resource identifier.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, in the described step (2), the data length of electronic service guide data model is during greater than the maximum electron business guide payload user data length of an electron service instruction data unit, electronic service guide data model after then will handling well is cut into the different pieces of information joint, use merogenesis encapsulation in different electron service instruction datas unit to transmit, and in the electron service instruction head of each electron service instruction data unit, indicate the joint sequence number of electron service instruction data in total joint number of cutting and the notebook data unit.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, in the described step (3), encapsulated the unit multiplexed multiplexed frame of electron service instruction data of electronic service guide data model to bearer service information or bear control information, the multiplexing payload of this multiplexed frame comprises one or more multiplexed sub frames, described multiplexed sub frame comprises subframe head and data segment, multiplexing one or more electron service instruction data unit that comprise electron service instruction head and electron service instruction data payload in the described data segment, the data encapsulation of electronic service guide data model has also write data cell quantity in data segment header in the electron service instruction data payload, the type of each data cell and length.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, in the described step (2), electron service instruction data has been carried out compression to be handled, and in the electron service instruction head, indicate the compression type of use, mobile subscriber terminal indicates decompressed data according to this in the described step (4).
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, in the described step (4), after mobile subscriber terminal obtains electronic service guide data model, therefrom obtain the version number of the protocol version of expression electron service instruction, and and mobile subscriber terminal on the electronic service guide data model version relatively, when the version number that receives was newer than the data model version on the mobile subscriber terminal, mobile subscriber terminal then upgraded local electronic service guide data model.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, also write table quantity parameter in the electronic service guide data model that described step (1) generates, be used to represent that this data model has comprised the definition of how many tables of data, the table sign quantity of the different electron service instructions of all of certain version equates with the table quantity in this data model; In the described step (4), mobile subscriber terminal is preserved the corresponding relation of table sign, version number and the electronic service guide data model of electron service instruction in the electron service instruction data unit, claim with table quantity and table name in the electronic service guide data model, table sign in conjunction with electron service instruction, differentiate the data model that whether has received certain table, and whether also will receive, need continue to receive for data model less than certain table that receives.
Further, the transmission method of above-mentioned mobile multimedia broadcast electronic service guide data model also can have following characteristics, in the described step (2), also in the electron service instruction head, write Data Identification, the data volume that expression electron service instruction ESG payload user data is belonged to.
Compared with prior art, the invention provides under the radio network environment, the transmission method of ESG data model relates to the definition of ESG data model, the solution that structure, multiplexing transmission etc. are explained in the ESG encapsulation.The present invention is when wheel is broadcast the ESG data, and also wheel is broadcast ESG data model definition of data, makes ESG data and ESG data model definition of data pass through traffic channel transmission with audio, video data, also can be separately by Traffic Channel or control channel transmission.Can flexmux transmit ESG data and ESG model data, for the expansion that solves the ESG data model provides the important channel.
Description of drawings
Fig. 1 is multiplex transmission system figure among the embodiment.
Fig. 2 is a multiplexing method schematic diagram among the embodiment.
Fig. 3 is an ESG data model definition schematic diagram among the embodiment.
Fig. 4 is a field description data definition schematic diagram among the embodiment.
Fig. 5 is an ESG transmission data segment structure chart among the embodiment.
Fig. 6 is an ESG data cell structure chart among the embodiment.
Fig. 7 is the structure chart of multiplexed frame among the embodiment.
Embodiment
Describe below in conjunction with the transmission method of accompanying drawing the ESG data model of present embodiment.
As shown in Figure 1, multiplex transmission system of the present invention comprises network equipment and terminal, and wherein, network equipment comprises multiplexer and broadcast transmission station,
Multiplexer is used to receive encapsulate and explains data and the ESG data that the ESG data model of transmission is prepared in the back, and together is multiplexed among the appointment multiplexed frame MF of logic channel with audio, video data, other configuration control numbers certificates.Described multiplexer adopts based on frequency, the mode of time-sharing multiplex;
The broadcast transmission station is used to modulate, launch the data after multiplexing;
Mobile subscriber terminal comprises mobile communication equipments such as mobile phone, is used to receive the data that the radio network channel transmits, for example ESG and data model information thereof, and to this information cache, renewal, inquiry, displaying.
The transmission method of a kind of mobile multimedia broadcast electronic service guide data model of present embodiment as shown in Figure 2, may further comprise the steps:
Step 110, network equipment generate electron service instruction ESG data model;
The ESG data model has defined the structure of ESG information data table, and these tables of data comprise: service information list data, content arrangement information table, access list, purchase table, purchasing channel table, and the table that will expand or the like, but be not limited to this.Itself can be divided into two-stage the data of ESG data model, and one is the table data of description, secondly is the field description data of each table.
As shown in Figure 3, the composition of ESG data model comprises: table quantity, table name claim that length, table name claim, the field description data.Wherein, each field implication is described as follows:
Table quantity represents that this data model has comprised the definition of how many tables of data.
Table name claims length, refers to the byte number length of " table name claims ";
Table name claims, the title of the table of expression data model definition.Be in this data cell that issues, the title of the tables of data of correspondence table sign;
The field description data are promptly described the definition of the field attribute of each table.
Fig. 4 describes the definition of field description data in detail, comprises Field Count and each field description, and Field Count refers to the total quantity of the field that table comprises of this field ownership in this model; Field description further comprises field sequence number, field identification, field name length, field name, data type, data length or the like, and putting in order of above information do not limit, wherein:
The field sequence number is used for representing the position number of this field at its ownership table, and sequence number is from 1 Field Count to the ownership table;
Field identification is used to distinguish overall unique label of different field.For example can use 16 figure places to come unique corresponding each field of sign;
Field name length is used to represent the length of this field name;
Field name is the name of field.Can be used for distinguishing uniquely different field at this table;
Data type, this field description the type of ESG data.This value can be expressed a plurality of implications of field, for example can comprise the type of this field in table (as whether being main, external key, whether allow sky etc.), but the value type of expression data (as character, numeral, date etc.) also, but expression data length type (as fixed length, elongated etc.) also, can also be the combination of above type, can also expand as required.
Data length is represented the message length of this field description.For data type is variable-length field, can ignore.
Thus, the level of table description and field description in conjunction with the ESG head, can be described the structure of ESG information data table definitely from the ESG data model.
Step 120, with the data encapsulation of ESG data model in the ESG payload user data of one or more ESG data cells;
From encapsulation form of presentation branch, two kinds of transmission data modes that ESG is basic are arranged: table data encapsulation form of presentation and formatted data encapsulation form of presentation (for example ESG of XML document).Table data encapsulation form of presentation refers to use payload transmission in the data cell purely, and has only the ESG uncorrected data in the payload.The format form of presentation is transmission again after the ESG uncorrected data is necessarily organized, described, as encoding through XML.Can be divided into file mode and data block mode again.Wherein:
The ESG data file of file mode after transmission formatting, also to transmit and be used for the unique identification URI that system and terminal are distinguished this ESG data file.And the ESG data file can directly transmission in the ESG of same data segment data cell.Also can use its file of other data segment transmission, even use delivering paths such as broadcasting downloading service or interactive download, make terminal obtain this file.If adopt back two kinds, then payload is URI in the ESG data cell of this data segment.Terminal should be according to this URI, the corresponding different ESG document entities that receive and store with differentiation.This URI can also be used to distinguishing multiple different-format definition such as XML.The definition mode versatility of XML form is better, but its efficiency of transmission is subjected to negative effect, must cooperate the compression algorithm that adapts.For the application scenario of bandwidth sensitive, the application of XML form is subjected to certain limitation.
The data block mode has then been lacked the link that URI handles, and does not have the independent joint to transmit URI, only needs the ESG data file after the transmission formatting.General delivering path is relatively also dull, and is the same with table data encapsulation form of presentation, also only uses the data cell of multiplexing broadcast mode to transmit.
The ESG data model can utilize above two kinds of encapsulation form of presentations, promptly adopts the uncorrected data transmission, or transmission again after tissue, description.For the present invention, a kind of in the above various encapsulation form of presentation can be used, also its combination can be used.When adopting table data encapsulation form of presentation, each table data model sends in different separately data cells respectively, and at this moment the table quantity parameter in the ESG data model is redundant, and is optional.When the XML form of presentation, though the data model of all tables can be expressed in an XML document, each table can be described in different XML sections respectively.
Because the ESG payload user data length of an ESG data cell is limited, General System can be provided with maximum, such as 64Kbytes.No matter be at table data encapsulation form of presentation and formatted data encapsulation form of presentation, when transmitting the ESG data inadequately, an ESG data unit size all needs to carry out merogenesis, ESG data after being about to handle well, be cut into the different pieces of information joint, as the ESG payload user data of certain ESG data cell, use different ESG data cells to transmit.For formatted data, if when transmission merogenesis, UE generally will receive all General Logistics Departments that save foreign exchange and just resolve.
In addition, in order to improve efficiency of transmission, the ESG data are transmitted after can also compressing again.
Figure 6 shows that the structure of present embodiment ESG data cell, comprise ESG head, ESG payload user data and CRC check sign indicating number.
Wherein, the ESG head comprises following field: ESG table sign, Data Identification, version number, compression algorithm type, ESG payload user data type, table description type, reference identification, joint sequence number, total joint number etc.Wherein:
ESG shows sign: be used for distinguishing the affiliated ESG tables of data of data of ESG payload user data, and can the tabulation of definition list identifier constant.Especially, can use special constant to represent that the ESG payload user data of this data cell is not at certain table, but all or certain several tables are ESG fileinfos of specific format (for example XML), each table sign is contained in this document.
Data Identification: as the data volume sign, the data volume that expression ESG payload user data is belonged to.Take turns sowing time as a plurality of ESG data volumes in the system (ESG of today, the ESG of all other times), the Data Identification of ESG head is used to identify these different data volumes at this moment.
Version number: the protocol version of expression ESG.
The compression algorithm type: being used to indicate the ESG payload user data is the ESG data of uncompressed, still adopts the compression algorithm compression data afterwards of which kind of type.The compression type value is pre-defined.Terminal is according to the indication decompressed data.
ESG payload user data type: indication ESG payload user data is ESG data model or ESG data.' 0 ' expression is the ESG model, ' 1, and expression is the ESG data.
Reference identification: what the ESG payload user data of expression notebook data unit comprised is ESG information data itself, or the sign URI of reference data file.ESG information data itself represents that with ' 0 ' URI of reference data file represents with ' 1 ' in this way in this way.
Table is described type: the ESG payload user data of expression notebook data unit adopts table data encapsulation form of presentation (with ' 0 ' expression), still adopts formatted data encapsulation form of presentation (with ' 1 ' expression).
The joint sequence number: what represent this ESG payload user data transmission is which data section of these ESG data.The joint sequence number is a numbering to these data section.Minimum value is 1, and maximum is the total joint numbers of the data of this ESG head.
Total joint number: represent that these ESG data transmit in the ESG data cell, being divided into is that how many data section are come multiplexing transmission.Be that what ESG payload user data are the ESG data be divided into, used what data unit to transmit.
When data model is transmitted in " ESG payload user data type " expression of ESG head, table sign and the version number of the ESG that " ESG shows sign " of ESG head and " version number " represent this ESG data model correspondence, the quantity of the different ESG table of all these of certain version sign equates with " the table quantity " in the ESG data model.
Suppose transmission such as the formatted file that adopts XML ESG data model, ESG payload user data type=0; Reference identification=1; Table is described type=1; Generate the XML document of ESG, compression the document, merogenesis transmits.If the formatted document of other modes, can be by the distinguishing identifier such as suffix mode of its URI.The byte length of ESG payload user data can use determined values such as this ESG data unit length and ESG head length degree to calculate and get, and is: data unit length-(ESG head length degree+CRC length).Wherein ESG head length degree and CRC length are made as fixed value.
Step 130 is multiplexed into the ESG data cell that has encapsulated the ESG data model among the multiplexed frame MF of logic channel;
Multiplex system of the present invention adopts based on frequency, the time-sharing multiplex mode.As shown in Figure 7, a plurality of multiplexed frames are formed broadcast channel frame, and multiplexed frame is made up of multiplex frame head, multiplexed frame payload, filling part.
For example, determine that be the multiplexing cycle 1 second, be divided into 40 parts of time periods (time slot), Multiplexing Unit is exactly 25ms.In logic multiplexed frame and time slot mapping are determined by system configuration.
Corresponding one an of multiplexed frame is controlled or service logical channels, and each multiplexed frame distributes a multiplexed frame sign MF_ID, and the MF_ID scope is 0 to 39, is 39 to the maximum, and wherein the multiplexed frame of MF_ID==0 is mapped to the control logic channel.
Two types multiplexed frame is arranged: the multiplexed frame of (1) MF_ID==0 is used for the transmission system control information;=0 multiplexed frame is used for transport service information, comprises the information of audio frequency and video and data segment.
The multiplexed frame of MF_ID==0 is used for bear control information, and each multiplexed sub frame is made up of a control information table.
The multiplexing payload of=0 multiplexed frame generally all is made up of the multiplexed sub frame of several data, and the multiplexed sub frame purposes is had nothing in common with each other, as the transmission of different television channels, configuration control information, ESG information etc.Multiplexed sub frame quantity is at 1 to 15, and this class multiplexed sub frame comprises subframe head, video-frequency band, audio section, data segment.Use the indication of multiplexed sub frame head, whether the multiplexed sub frame that can dispose this Traffic Channel comprises the part of audio section, video-frequency band or data segment.
As shown in Figure 5, data segment can contain plurality of kinds of contents, has defined data cell quantity, each data cell parameter and the CRC check sign indicating number of these data in data segment header, and wherein the data cell parameter comprises the description to each data cell type and data length.What this data cell types value can be used for comprising in the identification data unit is the ESG data model.
In the present embodiment, the ESG data cell is encapsulated in the data segment of multiplexed sub frame of multiplexed frame of bearer service information.But for the present invention, the ESG data model both can be multiplexed in the multiplexed frame of bearer service information, also can be multiplexed in the multiplexed frame of bear control information, perhaps can be multiplexed into simultaneously in the multiplexed frame of bear control information and business information.And in the multiplexed frame that is multiplexed into bearer service information the time, can use independent multiplexed sub frame transmission ESG data model, promptly in this multiplexed sub frame, there are not audio section and video-frequency band data; Also audio, video data and ESG data model can be transmitted in multiplexed sub frame together.
Step 140, mobile subscriber terminal is given with the multiplexed frame modulate emission in the broadcast transmission station, and mobile subscriber terminal therefrom obtains the ESG data model, and as when the data model version number that receives during than new on the UE, UE upgrades data model;
System can be when appropriate between with the suitable frequency, repeat to send the data of ESG data model, use and service identification that the ESG data are identical or different comes multiplexing or separately transmission.
Mobile subscriber terminal receives in the process of taking turns the data model of broadcasting, " payload user data type " information according to ESG head in the ESG data cell, what can distinguish transmission is ESG information or ESG data model information, and this ESG data unit transmission is ESG data model example itself, or the unified resource identifiers, URIs of its reference data file.Thereby find ESG data model itself from the ESG payload user data, perhaps find the data file that comprises the ESG data model information according to its URI.
Mobile subscriber terminal is preserved the corresponding relation of ESG table sign, version number and ESG data model in the ESG data cell.Can claim with table quantity and the table name in the ESG data model, in conjunction with described ESG table sign, differentiate the data model that whether has received certain table, and select whether also will receive, need continue to receive for the data model of certain table that does not receive.
After mobile subscriber terminal obtains the ESG data model, therefrom obtain the version number of the protocol version of expression ESG, and and UE on ESG data model version relatively, when the version number that receives was newer than the data model version on the UE, UE then upgraded data model.
In sum, in the mobile multimedia broadcast system of the present invention, use and ESG transmits identical unique multiplexing transmission system and sends to UE, so that the renewable ESG data model on it of UE.By the inventive method, can flexmux transmission ESG data model, the greatly compatible flexibility of ESG encapsulation statement, and convenient multiple delivering path and the load mode used.
Claims (12)
1. the transmission method of a mobile multimedia broadcast electronic service guide data model may further comprise the steps:
(1) network equipment generates electronic service guide data model;
(2) with the data encapsulation of electronic service guide data model in the electron service instruction data payload of one or more electron service instruction datas unit; Write the electron service instruction data payload type of notebook data unit in the electron service instruction head, being used to indicate the electron service instruction data payload is electronic service guide data model or electron service instruction data;
(3) it is unit multiplexed in the multiplexed frame of logic channel to have encapsulated the electron service instruction data of electronic service guide data model;
(4) mobile subscriber terminal is given with the multiplexed frame modulate emission in the broadcast transmission station, and mobile subscriber terminal therefrom obtains electronic service guide data model.
2. the transmission method of mobile multimedia broadcast electronic service guide data model according to claim 1 is characterized in that:
Corresponding each electron service instruction in the electronic service guide data model that generates in the step (1), comprise following information: table name claims length, refers to the byte number length of " table name claims "; Table name claims, the title of the tables of data of expression data model definition; The field description data are promptly described the definition of the field attribute of each table.
3. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 2, it is characterized in that:
Described field description data further comprise Field Count and each field description,
Described Field Count refers to the total quantity of the field that table comprises of this field ownership in the described electronic service guide data model;
Described each field description comprises following data: the field sequence number is used for representing the position number of this field at its ownership table; Field identification is used to distinguish overall unique label of different field; Field name length is used to represent the length of this field name; Field name is the name of field; Data type, the type of expression electron service instruction data; Also comprise data length when data type is fixed-length field, represent the message length of this field description.
4. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 3, it is characterized in that:
Described data type comprises the type of this field in table, the value type of data, a kind of or combination in any in the data length type.
5. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 2, it is characterized in that:
The described electron service instruction data unit that has encapsulated electronic service guide data model has write electron service instruction head and electron service instruction data payload at least, wherein, the electron service instruction head writes the table sign of the electron service instruction of the version number of electron service instruction and this data model correspondence simultaneously.
6. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 5, it is characterized in that:
When in the step (2) data of electronic service guide data model being encapsulated, adopt a kind of or its combination in the following encapsulation form of presentation, and in the electron service instruction head, identify with table description type:
Table data encapsulation form of presentation, only use the payload user data transmission in the electron service instruction data unit, and have only the uncorrected data of electronic service guide data model in the payload, this moment, the data model with each electron service instruction sent in different separately data cells respectively;
Formatted data encapsulation form of presentation is organized and is described as transmitting behind the electron service instruction data file again the uncorrected data of electronic service guide data model, comprises again:
File mode, the electron service instruction data file that comprises electronic service guide data model information after the need transmission formatting and unique unified resource identifier thereof, the unified resource identifier transmits in the payload user data of electron service instruction data unit, and the electron service instruction data file transmits by the payload user data of electron service instruction data unit or with downloading mode;
The data block mode only needs to transmit the electron service instruction data file that comprises electronic service guide data model information with the payload user data of electron service instruction data unit;
When using file mode, in the electron service instruction head, write reference identification and show that what transmit in the respective electronic business guide payload is electron service instruction data or unified resource identifier.
7. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 5, it is characterized in that:
In the described step (2), the data length of electronic service guide data model is during greater than the maximum electron business guide payload user data length of an electron service instruction data unit, electronic service guide data model after then will handling well is cut into the different pieces of information joint, use merogenesis encapsulation in different electron service instruction datas unit to transmit, and in the electron service instruction head of each electron service instruction data unit, indicate the joint sequence number of electron service instruction data in total joint number of cutting and the notebook data unit.
8. the transmission method of mobile multimedia broadcast electronic service guide data model according to claim 1 is characterized in that:
In the described step (3), encapsulated the unit multiplexed multiplexed frame of electron service instruction data of electronic service guide data model to bearer service information or bear control information, the multiplexing payload of this multiplexed frame comprises one or more multiplexed sub frames, described multiplexed sub frame comprises subframe head and data segment, multiplexing one or more electron service instruction data unit that comprise electron service instruction head and electron service instruction data payload in the described data segment, the data encapsulation of electronic service guide data model has also write data cell quantity in data segment header in the electron service instruction data payload, the type of each data cell and length.
9. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 5, it is characterized in that:
In the described step (2), electron service instruction data has been carried out compression handled, and indicate the compression type of use in the electron service instruction head, mobile subscriber terminal indicates decompressed data according to this in the described step (4).
10. as the transmission method of mobile multimedia broadcast electronic service guide data model as described in the claim 5, it is characterized in that:
In the described step (4), after mobile subscriber terminal obtains electronic service guide data model, therefrom obtain the version number of the protocol version of expression electron service instruction, and and mobile subscriber terminal on the electronic service guide data model version relatively, when the version number that receives was newer than the data model version on the mobile subscriber terminal, mobile subscriber terminal then upgraded local electronic service guide data model.
11. the transmission method as mobile multimedia broadcast electronic service guide data model as described in the claim 5 is characterized in that:
Also write table quantity parameter in the electronic service guide data model that described step (1) generates, be used to represent that this data model has comprised the definition of how many tables of data, the table sign quantity of the different electron service instructions of all of certain version equates with the table quantity in this data model;
In the described step (4), mobile subscriber terminal is preserved the corresponding relation of table sign, version number and the electronic service guide data model of electron service instruction in the electron service instruction data unit, claim with table quantity and table name in the electronic service guide data model, table sign in conjunction with electron service instruction, differentiate the data model that whether has received certain table, and whether also will receive, need continue to receive for data model less than certain table that receives.
12. the transmission method as mobile multimedia broadcast electronic service guide data model as described in the claim 5 is characterized in that:
In the described step (2), also in the electron service instruction head, write Data Identification, the data volume that expression electron service instruction data payload is belonged to.
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| WO2009086697A1 (en) * | 2008-01-07 | 2009-07-16 | I-Vision Beijing Inc. | A method for applying a service guide in the digital audio broadcast system, and the broadcast headend and terminal thereof |
| CN101826088B (en) * | 2009-03-05 | 2012-06-06 | 中兴通讯股份有限公司 | Device and method for configuring and storing information model |
| CN102064898A (en) * | 2010-10-14 | 2011-05-18 | 中兴通讯股份有限公司 | Processing method of program prompt information and electronic business guide system |
| CN101990110A (en) * | 2010-11-03 | 2011-03-23 | 中兴通讯股份有限公司 | Interactive system and method of mobile multimedia broadcasting |
| CN105812344B (en) * | 2014-12-31 | 2019-09-17 | 航天信息股份有限公司 | A kind of method for organizing, the apparatus and system of cryptographic service communication bag |
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