WO2008106839A1

WO2008106839A1 - A method for transmitting electronic service guide and program prompting information, and frame structure

Info

Publication number: WO2008106839A1
Application number: PCT/CN2007/001796
Authority: WO
Inventors: Mujin Li; Qinghua Yao; Zunyou Ke; Hailong Wen
Original assignee: Zte Corporation
Priority date: 2007-03-03
Filing date: 2007-06-06
Publication date: 2008-09-12
Also published as: CN100551003C; CN101018326A

Abstract

A method for transmitting a program prompting information of ESG is disclosed, wherein, the program prompting information of ESG is encapsulated to data unit of a multiplex sub frame, and is transmitted with the multimedia broadcasting video and audio unit in service logic channel. A method for transmitting an ESG is also disclosed, wherein, the program prompting information of ESG is encapsulated to data unit of a multiplex sub frame, which data type is “program prompting information”, and is transmitted with the multimedia broadcasting video and audio unit in a service logic channel; and after the terminals receive said programprompting information of ESG, a function of program forecast information of ESG is achieved. Furthermore, a frame structure of program fore notice information of ESG is disclosed, which includes start time, time duration, language type, length of theme and theme information.

Description

Electronic service guide and transmission method and frame structure of program prompt information

Technical field

The present invention relates to an Electronic Service Guide (ESG), and more particularly to a method of transmitting an electronic service guide and its program hint information (or program notice information) in a mobile multimedia broadcast system and a corresponding frame structure. Background technique

In the mobile multimedia broadcasting system, the function of the ESG is to provide end users with relevant information of the mobile multimedia broadcasting service, such as service name, playing time, content outline, etc., so that the user can quickly retrieve and access the business. It consists of basic description information, data information, and program prompt information.

The data information is the main body of the ESG and is encapsulated into data units of the multiplex subframe. In order to adapt the transmission of the service logical channel, the data information is divided according to the type, and is divided into a service information class, a programming information class, a content information class, and service parameter information. Class, etc., distinguished by data type identification field; the classified data information is divided by block, and is distinguished by the data block identification field; the data block is divided into thousands of sections, and the data section and the data of the multiplexing subframe are distinguished by the section number field Units correspond one by one. Under normal circumstances, according to this method, the ESG program prompt information (or program preview information) received by the mobile terminal is in a different information class of two different ESG data information, and therefore, broadcast transmission and Receiving a large amount of ESG data information is extremely disadvantageous for the terminal.

In the existing patent documents and the transmission method of the ESG program hint information (or program notice information) introduced by the published standards, the content elements of the content information class of the ESG data information and the arrangement elements of its arrangement information class are separated from each other. (ie, the information category does not contain information about the content information class). It may be that the programming information of the program is large and/or the content information of the program is large, and the resources of the mobile terminal are excessively consumed. When the computing resources and storage capacity of the mobile terminal are limited, it is also difficult to store all the ESG data information in the memory.

One of the prior art problems is that when the memory of the mobile terminal is insufficient to store all the ESG data information, or when a certain threshold has been exceeded, the data information of the ESG is stored in the memory. The adverse result is that the mobile terminal stores information about the content information of all programs. Only the information of some of the information classes is stored. At this time, the mobile terminal can only use the content of the "partial" program already stored, because it has lost the information of the arrangement information of the content of the corresponding certain programs. In fact, the content information of a program that has lost the information of the information type has occupied a large amount of valuable storage space of the mobile terminal. If the programming information class of the program is first broadcasted, a similar phenomenon may occur, that is, the information of the content information of some programs is lost, and the information of the programming information of all the programs is stored. Another problem is that during broadcast of ESG data information, if the broadcast transmission is interrupted and/or the wireless digital broadcast bandwidth is insufficient, the above related phenomenon may also occur. In this case, the problem is that the memory of the mobile terminal is too small, but the broadcast transmission of the ESG data information is interrupted. The stored ESG data information is available if it is complete. In this case, a large amount of data information of the ESG that has been received is incomplete, that is, it is unavailable, or the data information of the ESG is useless.

To this end, the structure of ESG program prompt information (or program preview information) capable of fully describing the media content is designed without occupying excessive wireless bandwidth. When the mobile terminal receives the data, it must take into account the performance of the terminal and it. The length of battery life has become an important issue that must be addressed in the structural design of ESG program reminder information (or program preview information) for mobile multimedia broadcast networks.

Summary of the invention

The technical problem to be solved by the present invention is to provide an electronic service guide and program prompt information thereof.

(or program preview information) transmission method and corresponding frame structure, which can fully describe the ESG program prompt information of the media content without occupying excessive wireless bandwidth, and can reduce the ESG program prompt during the broadcast transmission and the receiving process of the mobile terminal The loss of useful information in the information directly increases the amount of useful information in the ESG program prompt information of the mobile terminal.

In order to solve the above technical problem, the present invention provides a method for transmitting program prompt information of an electronic service guide, which encapsulates program prompt information of the electronic service guide into a data unit of a multiplex subframe, along with a multimedia broadcast video and audio unit. Transmitted in the business logical channel.

Further, the foregoing method may further have the following feature: the data unit of the program prompt information includes a start time, a duration, a language category, a topic length, and topic information. Further, the foregoing method may further have the following feature: the data unit of the program prompt information further includes a record number, and each record corresponds to a set start time, duration, language type, topic length, and topic information.

Further, the above method may further have the following feature, the data unit of the program prompt information further includes one or more of a reserved and CRC-32 information.

Further, the above method may further have the following feature, the number of records indicating the number of program prompt information included in the data unit, the first record is current program information; reserved as a reserved bit; the start time includes UTC and the common time coordinate The revised Julian date is the program start time and date represented by the MJD form; the duration is the length of the content or the playing time of the program; the language scale class indicates the language used for the text field; the subject length indicates the length of the topic; The name; CRC—32 is a 32-bit field.

The invention also provides a method for transmitting an electronic service guide, which encapsulates the program prompt information of the electronic service guide in a data unit of a data type of "program prompt information" in a multiplex subframe, with multimedia broadcast video and audio. The units are transmitted together in the service logical channel, and after receiving the program prompt information of the electronic service guide, the terminal implements the function of the program preview information of the electronic service guide.

Further, the above method may further have the following feature: the data unit of the program prompt information includes a start time, a duration, a language type, a subject length, and topic information.

Further, the above method may further have the following feature: the data unit of the program prompt information further includes a record number, and each record corresponds to a set start time, duration, language type, subject length, and topic information.

Further, the foregoing method may further have the following feature, the data unit of the program prompt information further includes one or more of a reserved and CRC_32 information.

Further, the above method may further have the following feature, the number of records indicating the number of program prompt information included in the data unit, the first record is current program information; reserved as a reserved bit; the start time is represented by UTC and MJD The start time and date of the program; the duration is the length of time the content or program is played; the language type indicates the language used for the text field; the length of the topic indicates the length of the i question; the subject indicates the name of the content of the broadcast program; CRC—32 is a 32-bit field . The present invention also proposes a frame structure of program prompt information of an electronic service guide, including start time, duration, language type, topic length, and topic information.

Further, the above frame structure may also have the following features, and also includes the number of records, each record corresponding to a set start time, duration, language type, subject length, and subject information.

Further, the above frame structure may also have the following features, and further includes one or more of reservation and CRC-32 information.

Further, the foregoing frame structure may further have the following feature, the number of records indicating the number of program prompt information included in the frame structure, the first record is current program information; reserved as a reserved bit; the start time is in UTC and MJD form Indicates the start time and date of the program; the duration is the length of time for the content or program; the language type indicates the language used for the text field; the length of the topic indicates the length of the topic; the topic indicates the name of the content of the program; CRC—32 is 32 bits Field.

Compared with the prior art, the present invention provides a method for transmitting program preview information of an electronic service guide, which can reduce the broadcast bandwidth in the ESG program prompt information during broadcast transmission and mobile terminal reception, and directly increase the ESG of the mobile terminal. The amount of useful information in the program prompt information. The reliability of the system is improved by taking into account the limitations of terminal capabilities and battery life. BRIEF abstract

FIG. 1 is a schematic diagram of a data unit encapsulation structure of program prompt information of an ESG according to the present invention. Preferred embodiment of the invention

In order to facilitate a deep understanding of the technical content of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The ESG multiplexing method of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. '

In order to reduce the resource consumption of the terminal device, it is possible to provide only the information of the scheduling information class (shown in Table 1) and the content information class (as shown in Table 2) that receive the ESG data information, so as to provide the ESG program prompt information (the program preview information). a defect in function, the present invention provides an electronic service The method for transmitting the program prompt information in the south, the program prompt information of the electronic service guide is encapsulated into a data unit of the multiplex subframe, and is transmitted in the service logical channel along with the multimedia broadcast video and audio unit, where the electronic service The data unit information of the guide program reminder information includes one or more of the number of records, the start time, the duration, the language type, the subject length, the subject, and the CRC-32 field. As shown in Figure 1. Each of these records corresponds to a set of start time, duration, language type, subject length, and subject.

When the data type of the data segment of the multiplexed sub-frame of the mobile multimedia broadcasting system is "program prompt information", it means that the data unit carries the program prompt information. As long as the terminal receives the program prompt information of the ESG, the terminal can implement the function of the program preview information of the ESG, and it occupies less resources such as the broadcast transmission bandwidth.

As shown in FIG. 1, the data unit of the program prompt information of the ESG includes a record number, a hold, a start time, a duration, a language type, a subject length, a subject, and a CRC-32 field. The number of records indicates the number of program prompt information included in the data unit, the first record is the current program information, 2 bits; the reserved position is 6 bits; the start time includes UTC (Universal Time Coordinated) and MJD (Modified Julian Date) The program start time and date, 40 digits; duration is the length of time the content or program is played, in seconds, 16 digits; language type description used in the text field Language, 24 bits; subject length indicates the length of the topic, 8 bits; topic indicates the name of the program content to be played, 8*M bits, CRC—32 is a 32-bit field. The description is shown in Table 3. In Table 3, N represents the number of records. Each record contains a set of start time, duration, language type, subject length and subject field, and M represents the number of topics.

table 3

Grammar semantics program prompt information ()

{

The number of records indicates the program prompt information contained in this data unit.

Quantity, the first record is the current program information.

Reserved

For ( i = 0; i < N; i++ )

{

Start time Contains programs in UTC and MJD format

Start time and date' duration content or the length of time the program is played, in units second

Language Type Indicates the language used for the text field that follows

The length of the topic indicates the length of the subject, in bytes

For ( j = 0; j < M; j++ )

{

Theme

}

CRC-32 32-bit field

}

Table 1 is a layout element of the arrangement information class of the data information of the electronic service guide in the embodiment, and the arrangement element describes the correspondence relationship between the service and the content, the program playback start time, and the like. It includes the following fields: business identification number, content identification, theme element, topic, language attribute of topic element, start time, start time element data type definition, free indication, live broadcast indication, playback indication, key acquisition descriptor, orchestration identifier . The service identification number (ServicelD), which represents the attribute of the service element, uniquely identifies a service in the mobile multimedia broadcast transmission multiplexing frame; the content identifier (ContentID), globally unique; the theme (Title) element; the main symptom (titleStr ) indicates the name of the program content to be played; the language attribute of the theme element (lang ); the start time (StartTime), the start time element data type definition (UTCDateTimeT pe ), for example, the date element, the format "xxxx-xx-xx", indicating the year - month-day, and time element, format "xx:xx:xx", indicating time: minute: second; free indication (forFree), "true" means free, "false" means charging; live indicator (Live), " "true" means live, "false" means video; playback indication (Repeat), "true" means replay, "false" means first broadcast; key acquisition descriptor (CADescriptor), future extension definition; schedule ID ( SchedulelD), orchestration element Attributes, globally unique.

Table 1

Field i

ServicelD service identification number, attribute of service element, 16-bit unsigned integer, uniquely identifies a service in a mobile multimedia broadcast transmission multiplex frame.

Content ID content ID, globally unique.

Ti t le theme element.

Ti t leStr theme, which represents the name of the content of the program being played.

The language attribute of the lang Ti t le element.

StartTime start time. · UTCDateTimeType start time element data type definition, see Table 6. (Table 6???, Please confirm) forFree Free instructions, Boolean type, "true" means free, "fal se" means charge.

Live live indicator, Boolean type, "true" means live, "false" means video.

Repeat playback indication, Boolean type, "true" means replay, "fal se means first broadcast.

CADescr iptor key acquisition descriptor, extended definition in the future.

SchedulelD orchestration identifier, attribute of the orchestration element, globally unique.

...

Table 2 is a content element of the content information class of the data information of the electronic service guide in the embodiment, and the content element describes the attributes of the program. It includes the following fields: content classification, content type, duration, multimedia elements, data type definition of multimedia elements, content description elements related to language, keywords, abstracts, titles, content audio language indications, subtitle language indications, and language The related content describes the language attribute of the element, the business parameter identifier, the extension information, and the content identifier. Wherein, the content classification (ContentClass) indicates the type of the media content, and the value of the single content type is "text", "image", "audio", "video" or "application", and the composite content type is "multipart"; Type ( ContentGenre ), the classification of the content; Duration ( Duration), indicating the length of time the content or program is played, in seconds; multimedia element (Media), indicating information describing the business using multimedia data; data type definition of the multimedia element ( MediaType ), which includes Usage, ContentType, MediaData, MediaURI, and language-related content description elements (ContentLanguageSpecial); Keywords (Keyword), multiple keywords Divided by ";,,; Digest (in), the description of the contents of the book; Title (Title, the name of the content; content audio language instructions (AudioLang), separated by 7, with different sounds, such as "Chinese / Tibetan "; subtitle language indication ( SubtitleLang ), separated by 7' between different languages For example, "Chinese/Tibetan"; business name description language attribute (lang), language attribute of ContentLanguageSpecial element; service parameter identifier (ServicePamID), indicating that the service parameter information is obtained from the service parameter table according to the identifier, if the item is 0, It means that the service has no corresponding service play parameters; the extended information ( ExtentInfo), the string, represents a URI link, through which the relevant information of the current channel/service can be obtained. Content ID (ContentID), attribute of the content element , globally unique.

ContentClass content classification, string, indicates the type of media content, the value of a single content type is "text", "image", "audio", "video" is "application", and the composite content type is "multipart".

ContentGenre content type.

Duration Duration, which is the length of time in which the content or program is played, in seconds.

Media multimedia element, indicating information that describes the business using multimedia data.

MediaTy.pe The data type definition of the multimedia element, see Table 7.

ContentLanguageSpecial A description element associated with the language.

Keyword Keywords, multiple keywords are separated by ";".

Digestlnfo summary, which represents a brief description of the content.

Title title.

AudioLang content audio language indication, separated by '/, different sounds, such as "Chinese / Tibetan".

SubtitleLang Subtitle language indication, separated by V, different languages, such as "Chinese / Tibetan". The language attribute of the lang ContentLanguageSpecial element.

The ServiceParalD service parameter identifier indicates that the service parameter information is obtained from the service parameter table according to the identifier. If the item is 0, the service has no corresponding service play parameter.

Extentlnf o extension information, representing a URI link, through which the current channel can be obtained

/ Business more relevant information.

ContentID content identifier, attribute of the content element, globally unique.

...

As can be seen from the above, the amount of information in Tables 1 and 2 is much larger than that of the ESG of the present invention.

The method of the present invention will be described below with a specific example.

In a specific embodiment of the present invention, such as the title of a program is "commercial news", the abstract (Digestlnfo) is "the latest development of today's world business, and the program will be at 9:00 PM, 10: 00 PM. , 11: 00PM play in three different time periods.

In this case, if the content element of the content information class of the ESG data information as defined in Table 2 is used, it includes ContentID, Title, DigestInfo, ..., ie: ( 'ρΟΟΓ , 'Business News ', 'The latest developments in today's world of business, , ...). In the content of this program, three different playing times are involved. To provide ESG program preview information, the programming elements of the program as defined in Table 1 are also required, which includes ScheduleID, Title, ContentID, start time. (StartTime), ..., ie ( 's001, , 'ρΟΟΓ , 'Business News, , '9: 00PM', 'live broadcast, , ...); ( 's002, , 'ρΟΟΙ' , 'Business News, , '10: 00ΡΜ, , 'Replay, , ...); ( 's003, , 'ρΟΟΙ' , 'Business News, , '11: 00PM', 'Replay, , ...).

Obviously, in this case, the function of providing the program preview information must at least receive the above.

ESG's data information, that is, the ability to receive a large amount of ESG data information in order to provide program preview information. The consumption of terminal resources is increased, the bandwidth of valuable broadcast transmission is wasted, and the performance of the terminal is lowered.

With the method of the present invention, the terminal only needs to receive the fields of the ESG program prompt information as described in Table 3: number of records, start time, duration, language type, subject, ie (001, 10: 00PM, 10, Chinese, commercial News). The two playback times of 9 o'clock and 11 o'clock correspond to similar program prompt information. Obviously, the terminal receives much less information in the present invention.

The program prompt information of the present invention is transmitted along with the program. The program hint information is encapsulated into data units of the multiplexed sub-frames, which are transmitted along with the multimedia broadcast video and audio unit in the service logical channel. The data units of the information class and the content information class are encapsulated into data units of the multiplex subframe, and are transmitted in a dedicated ESG service logical channel.

By using the method for transmitting program prompt information of the electronic service guide of the present invention, the efficiency of ESG broadcast transmission can be improved, because when the user's mobile terminal receives the ESG table, the field of the program prompt information can be read, analyzed and stored. Its data information (do not have to wait until it receives the full ESG data information). Whenever a mobile terminal stops storing ESG data information (due to insufficient memory, or unpredictable broadcast transmission interruption, or limited bandwidth of wireless digital broadcasting), almost all ESG data information stored in the mobile terminal (except for very few) Other than the part) are available.

The invention may, of course, be embodied in various other embodiments without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability The method for transmitting program prompt information of the electronic service guide according to the present invention can reduce the broadcast bandwidth in the ESG program prompt information during the broadcast transmission and the mobile terminal receiving process, and directly increase the useful information amount in the ESG program prompt information of the mobile terminal. , and fully consider the characteristics of terminal capacity limitation and battery life, which improves the reliability of the system.

Claims

Claim

A method for transmitting program prompt information of an electronic service guide, characterized in that the program prompt information of the electronic service guide is encapsulated into a data unit of a multiplex subframe, and the service is carried out along with the multimedia broadcast video and audio unit. Transfer in the channel.

2. The method according to claim 1, wherein the data of the program prompt information includes a start time, a duration, a language type, a subject length, and topic information.

3. The method according to claim 2, wherein the data unit of the program prompt information comprises a number of records, and each record corresponds to a set start time, duration, language type, topic length, and topic information.

The method according to claim 2 or 3, wherein the data unit of the program prompt information further comprises one or more of a reservation and CRC-32 information.

5. The method according to claim 4, wherein the number of records indicates the number of program prompt information included in the data unit, the first record is current program information; the reserved bit is reserved; the start time is included in the universal time The coordinates are UTC and the corrected Julian date, that is, the program start time and date represented by the MJD form; the duration is the length of the playback time of the content or program; the language type indicates the language used for the text field; the length of the topic indicates the length of the theme; The name of the program content to be played; CRC-32 is a 32-bit field.

A method for transmitting an electronic service guide, characterized in that the program prompt information of the electronic service guide is encapsulated in a data unit of a data type of "program prompt information" in a multiplex subframe, and is displayed in a multimedia broadcast The audio unit is transmitted together in the service logical channel, and after receiving the program prompt information of the electronic service guide, the terminal implements the function of the program preview information of the electronic service guide.

7. The method according to claim 6, wherein the data unit of the program prompt information includes a start time, a duration, a language type, a subject length, and topic information.

8. The method according to claim 7, wherein the data unit of the program prompt information further includes a record number, and each record corresponds to a set start time, duration, language type, topic length, and topic information.

The method according to claim 7 or 8, wherein the program prompt information The data unit also contains one or more of the reservation and CRC-32 information.

10. The method according to claim 9, wherein the number of records indicates the number of program hint information included in the data unit, the first record is current program information; the reserved bit is reserved; the start time is included in UTC and The program start time and date represented by the MJD form; the duration is the length of the content or the play time of the program; the language type indicates the language used for the text field; the length of the topic indicates the length of the topic; the topic indicates the name of the content of the broadcast program; CRC—32 is 32-bit field.

11. A frame structure for program prompt information of an electronic service guide, characterized by comprising a start time, a duration, a language type, a subject length, and topic information.

12. The frame structure according to claim 11, further comprising a record number, each record corresponding to a set start time, duration, language type, topic length, and topic information.

13. The frame structure of claim 12, further comprising one or more of a reserved and CRC-32 information.

The frame structure according to claim 13, wherein the number of records indicates the number of program hint information included in the frame structure, and the first record is current program information; and the reservation is reserved for content or program. The length of the playback time; the language type indicates the language used for the text field; the length of the topic indicates the length of the topic; the topic indicates the name of the content of the program being played; CRC—32 is a 32-bit field.