CN101558589A - Method and apparatus for transmitting broadcast, method and apparatus for receiving broadcast - Google Patents

Abstract

[Problem] It is hard to apply the A-VSB transport system to a mobile broadcast. [Solution] Provided are a method and apparatus for transporting a broadcast and a method and apparatus for receiving a broadcast. In the method of transporting a broadcast service for mobile communications, the method includes generating an encapsulation packet including configuration information adaptive to application data that is to be transmitted and the application data; generating transport packets having data regarding the encapsulation packet by dividing the encapsulation packet into predetermined-sized packets, where the transport packets include information regarding the structures of the transport packets; and generating service configuration information including information set about a channel having the transport packets, and including the service configuration information in a service information channel at a predetermined location from among at least one transport channel on a transport stream. Accordingly, it is possible to efficiently use a data region and increase the speed of data transmission.

Description

Be used to send broadcasting method and apparatus, be used to receive the method and apparatus of broadcasting

Technical field

The present invention relates to a kind of method and apparatus and a kind of method and apparatus that is used to receive broadcasting that is used to send broadcasting, more specifically, the equipment that relates to a kind of broadcast transmission method and be used to provide mobile broadcast to serve.

Background technology

ATSC (advanced television system committee) is the tissue of Digital Television (DTV) transmission standard of the definition United States of America in terrestrial DTV (DTV) the broadcast transmitted standard.The main main points of the described standard of ATSC definition relate to audio/video (AV) compression and transmission.That is to say,,, use residual sideband (VSB) technology to send these signals according to AC-3 standard compression sound and voice signal according to MPEG2 standard compression vision signal.Advantage as the VSB of ground DTV acceptance criteria is that it has increased the utilance of frequency band, thus the scope that maximization DTV watches, and inferior position is owing to during movement be difficult to receive radio signals, so be difficult to VSB is applied to mobile TV.

Simultaneously, along with to the broadcast service of using mobile communications device (such as, terrestrial DMB broadcast service and satellite dmb broadcast service) increase in demand and to the increase and the variation of broadcast service demand, the various broadcast technologies that are used to meet consumers' demand have been proposed.

Description of drawings

Figure 1A and Figure 1B illustrate the MCAST data protocol stack according to the embodiment of the invention;

Fig. 2 illustrates MCAST data protocol stack according to another embodiment of the present invention;

The structure of the schematically illustrated A-VSB MCAST transmission system according to the embodiment of the invention of Fig. 3;

The structure of the schematically illustrated A-VSB according to another embodiment of the present invention of Fig. 4 MCAST transmission system;

The schematically illustrated OMA-BCAST service layer of Fig. 5 according to the embodiment of the invention;

The schematically illustrated terminal network protocol interface of Fig. 6 according to the embodiment of the invention;

Fig. 7 A illustrates the high-speed service access method of being supported by the ATSC-MCAST system according to the embodiment of the invention to Fig. 7 D;

Fig. 8 A and Fig. 8 B illustrate the high-speed service access method of being supported by the ATSC-MCAST system according to another embodiment of the present invention;

Fig. 9 A and Fig. 9 B illustrate the high-speed service access method of being supported by the ATSC-MCAST system according to another embodiment of the present invention;

Figure 10 A illustrates service configuration information according to the embodiment of the invention to Figure 10 C;

Figure 11 illustrates the structure according to the version_indicator_information () field shown in Figure 10 A of the embodiment of the invention;

Figure 12 illustrates the structure of frame_group_information () field;

Figure 13 illustrates the structure according to the turbo_channel_information () field shown in Figure 10 A of the embodiment of the invention;

Figure 14 illustrates the structure according to the additional_service_information () field shown in Figure 10 A of the embodiment of the invention;

Figure 15 illustrates the structure according to the Turbo_channel_information_description () field of the embodiment of the invention;

Figure 16 A illustrates the structure according to the turbo_channel_configuration () field shown in Figure 10 B of the embodiment of the invention;

Figure 16 B illustrates the structure of turbo_channel_configuration () field according to another embodiment of the present invention;

Figure 17 illustrates the structure according to the descriptor_loop () field shown in Figure 16 A of the embodiment of the invention;

Figure 18 illustrates the structure of " frame_group_update " field when the value of " tag " field shown in Figure 17 is set to " 0 ";

The structure of " Frame_Slicing_Duration_update " field when Figure 19 A illustrates the value when " tag " field shown in Figure 17 according to the embodiment of the invention and is set to " 1 ";

Figure 19 B illustrates the structure of " Frame_Slicing_Duration_update " field when the value of " tag " field shown in Figure 17 is set to " 1 " according to another embodiment of the present invention;

The structure of " SRS_position_update " field when Figure 20 A illustrates the value when " tag " field shown in Figure 17 according to the embodiment of the invention and is set to " 2 ";

Figure 20 B illustrates the structure of " SRS_position_update " field when the value of " tag " field shown in Figure 17 is set to " 2 " according to another embodiment of the present invention;

The structure of " turbo_channel_update " field when Figure 21 A illustrates the value when " tag " field shown in Figure 17 according to the embodiment of the invention and is set to " 3 ";

Figure 21 B illustrates the structure of " turbo_channel_update " field when the value of " tag " field shown in Figure 17 is set to " 3 " according to another embodiment of the present invention;

Figure 22 A illustrates the structure according to " BD_Packet " field of the embodiment of the invention;

Figure 22 B illustrates according to another embodiment of the present invention the structure of " BD_Packet " field;

Figure 23 illustrates the structure according to the broadcasting descriptor (BD) of the embodiment of the invention;

The structure of " Channel_info_update () " field when Figure 24 A illustrates the value when " tag " field shown in Figure 23 according to the embodiment of the invention and is set to " 1 ";

Figure 24 B illustrates the structure according to " Channel_info_update () " field of the embodiment of the invention;

Figure 24 C illustrates according to another embodiment of the present invention the structure of " Channel_info_update () " field;

Internet protocol (IP) mapping descriptor when Figure 25 A illustrates the value when " tag " field shown in Figure 23 according to the embodiment of the invention and is set to " 1 ";

Figure 25 B illustrates IP mapping descriptor according to another embodiment of the present invention;

Figure 26 illustrates the structure according to " IP_channel_description " field shown in Figure 25 A of the embodiment of the invention;

The structure of " IP_address_table " field when Figure 27 A illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 1 ";

Figure 27 B illustrates the structure of " IP_address_table " field when the value of " tag " field shown in Figure 26 is set to " 1 " according to another embodiment of the present invention;

The structure of " MAC_address_table " field when Figure 28 illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 2 ";

The structure of " Text_description_table " field when Figure 29 illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 3 ";

Figure 30 A illustrates the MCAST multiplexing structure according to the embodiment of the invention;

Figure 30 B illustrates MCAST multiplexing structure according to another embodiment of the present invention;

Figure 31 A illustrates MCAST frame structure and the LMT according to the embodiment of the invention;

Figure 31 B illustrates MCAST frame structure and LMT according to another embodiment of the present invention;

Figure 32 illustrates the method for passing through to use the change in virtual map identification (VMI) the inspection sub-data channel according to the embodiment of the invention;

Figure 33 is the flow chart that passes through to use VMI acquisition service method that illustrates according to the embodiment of the invention;

Figure 34 A illustrates the structure according to the location map table (LMT) of the embodiment of the invention;

Figure 34 B is shown specifically the structure according to the LMT of Figure 34 A of the embodiment of the invention;

Figure 35 A and Figure 35 B illustrate the structure according to the LMT of the embodiment of the invention;

Figure 36 illustrates the structure according to " LMT_information " field shown in Figure 35 of the embodiment of the invention;

Figure 37 A and Figure 37 B illustrate the structure of LMT and " LMT_information " field according to another embodiment of the present invention;

Figure 38 illustrates the structure of LMT according to another embodiment of the present invention;

Figure 39 illustrates the structure according to the MCAST frame of the embodiment of the invention and link information table (LIT);

Figure 40 illustrates the structure according to the LIT of the embodiment of the invention;

Figure 41 A and Figure 41 B illustrate the structure of LIT according to another embodiment of the present invention;

Figure 42 A illustrates the flow chart that use LMT and LIT according to the embodiment of the invention provide service method;

Figure 42 B illustrates the flow chart that uses LMT and LIT that service method is provided according to another embodiment of the present invention;

Figure 43 illustrates the structure according to the object transmission information of the embodiment of the invention;

Figure 44 illustrates the structure according to " directory_information " field shown in Figure 43 of the embodiment of the invention;

Figure 45 illustrates the structure according to " time_table " field shown in Figure 43 of the embodiment of the invention;

The structure of " content_name_descriptor " field when Figure 46 illustrates the value when " tag " field shown in Figure 43 according to the embodiment of the invention and is set to " 1 ";

The structure of " mime_type_description " field when Figure 47 illustrates the value when " tag " field shown in Figure 43 according to the embodiment of the invention and is set to " 2 ";

Figure 48 illustrates according to the wrapper in the MCAST system of the embodiment of the invention and the relation between the transmission package;

Figure 49 A and Figure 49 B illustrate the wrapper that is used for signaling according to the embodiment of the invention;

Figure 50 A and Figure 50 B illustrate the wrapper that is used for real time data according to the embodiment of the invention;

Figure 51 illustrates the grammer according to the wrapper that is used for real time data of the embodiment of the invention;

Figure 52 A and Figure 52 B illustrate the grammer according to the wrapper that is used for the IP data of the embodiment of the invention;

Figure 53 illustrates the grammer of the wrapper that is used for the IP data according to another embodiment of the present invention;

Figure 54 A and Figure 54 B illustrate the structure according to the bag that is used for object data of the embodiment of the invention;

Figure 55 A and Figure 55 B illustrate the structure of the bag that is used for object data according to another embodiment of the present invention;

Figure 56 illustrates the method according to the transmission object data of the embodiment of the invention;

Figure 57 illustrates the application of the application layer forward error correction (AL-FEC) according to the embodiment of the invention;

Figure 58 illustrates according to the header structure of the transmission package of the embodiment of the invention and transmission package;

Figure 59 illustrates the grammer according to the transmission package of the embodiment of the invention;

Figure 60 A and Figure 60 B illustrate the structure of transmission package, basic head and added field according to another embodiment of the present invention;

Figure 61 A and Figure 61 B illustrate when the value of " tag " field shown in Figure 60 is set to " 0 " structure according to " padding_field " field of the embodiment of the invention;

The structure of " LMT_field " field when Figure 62 illustrates the value when " tag " field shown in Figure 60 according to the embodiment of the invention and is set to " 1 ";

The structure of " compression_field_parameter " field when Figure 63 illustrates the value when " tag " field shown in Figure 60 according to the embodiment of the invention and is set to " 2 ";

Figure 64 A and Figure 64 B illustrate the structure according to the signaling packet of the embodiment of the invention;

The processing that provides OMA-BCAST to serve in the MCAST transmission system according to the embodiment of the invention is provided Figure 65;

Figure 66 illustrates according to the use of passing through of the embodiment of the invention and supports the MCAST of OMA-BCAST that service method is provided;

Figure 67 illustrates four layers that are used to protect service and content according to the embodiment of the invention;

Figure 68 illustrates the electric power management mechanism according to the embodiment of the invention;

Figure 69 illustrates the parameter about MCAST frame burst according to the embodiment of the invention;

Figure 70 illustrate according to the embodiment of the invention about energy-conservation parameter;

Figure 71 be illustrate according to the embodiment of the invention with the chart of each service assignment to the bandwidth method that is used for burst mode transfer;

Figure 72 is the chart that illustrates according to the rotation of the service that is used for burst mode transfer of the embodiment of the invention;

Figure 73 is the chart that generator (generator) matrix according to the embodiment of the invention is shown;

Figure 74 is the definite deg (v that illustrates according to the embodiment of the invention _i) the flow chart of method;

Figure 75 illustrates according to the information node of the embodiment of the invention flow chart to the connection of code node;

Figure 76 is the flow chart that is shown specifically according to the operation S7520 shown in Figure 75 of the embodiment of the invention;

Figure 77 is the block diagram according to the MCAST apparatus for receiving broadcasting of the embodiment of the invention;

Figure 78 is the flow chart that the method for broadcasting according to the reception of the embodiment of the invention is shown;

The schematically illustrated A-VSB MCAST receiving system of Figure 79 according to the embodiment of the invention;

Figure 80 is the block diagram according to the apparatus for receiving broadcasting that can indicate the mistake bag of the embodiment of the invention;

Figure 81 is the flow chart that illustrates according to the method for the broadcasting of the reception of embodiment of the invention indication mistake bag;

Figure 82 A and Figure 82 B illustrate the structure according to the preposition head of the embodiment of the invention;

Figure 83 is the flow chart that apparatus for receiving broadcasting is handled the method for DCI that passes through that illustrates according to the embodiment of the invention;

Figure 84 A illustrates the method according to the TCC in the renewal adaptation time burst of the embodiment of the invention;

Figure 84 B illustrates the update method according to the BD in the use adaptation time burst of the embodiment of the invention;

Figure 85 is the block diagram according to the broadcast service transmitting apparatus of the embodiment of the invention;

Figure 86 is the block diagram according to the broadcast service receiving equipment of the embodiment of the invention;

Figure 87 is the flow chart that illustrates according to the method for the transmission broadcast service of the embodiment of the invention;

Figure 88 is the flow chart that illustrates according to the method for the reception broadcast service that is used for mobile communication of the embodiment of the invention.

Summary of the invention

Technical problem

The invention provides a kind of broadcast service sending method and the equipment that the high quality standards broadcast service can fast and effeciently be provided in mobile communication system, and a kind of broadcast service method of reseptance and equipment.

Technical scheme

The invention provides a kind of method that is used for the transmission broadcast service of mobile communication, described method comprises: generation comprises and the configuration information that the application data that is sent out is adapted and the wrapper of application data; Have transmission package about the data of wrapper by the packet generation that wrapper is divided into pre-sizing, wherein, transmission package comprises the information about the structure of transmission package; Generation comprises the service configuration information about the information of the channel with transmission package, and comprises the service configuration information in the information on services channel in precalculated position at least one transmission channel on the transport stream.

Beneficial effect

According to the present invention, owing to service configuration information is present in the presumptive area of transmission frame, so the broadcast service receiving equipment can pass through to use service configuration message reference transmission channel and non-processing signaling information channel.Therefore, can reduce the broadcast service receiving equipment in order to receive the stand-by period of broadcast service, just the step of described reception broadcast service takes place when having visited each broadcast service up to the signaling information channel in the detected transmission frame and after explaining the signaling information channel.

In addition, according to the present invention, the type of the application data that is adapted to provide is provided the structure of wrapper and transmission package, thereby effectively uses the data area and increase the speed of transfer of data.

In addition, according to the present invention, decoder configurations information is sent out with the broadcast service that the real-time media data are provided, thereby receiving terminal can upgrade the specification of the decoder that the form with the media data that provides in advance adapts by using decoder configurations information.

Optimization model

According to an aspect of the present invention, provide a kind of equipment that is used for the transmission broadcast service of mobile communication, described equipment comprises: wrapper generation unit, generation comprise and the configuration information that the application data that is sent out is adapted and the wrapper of application data; The transmission package generation unit has transmission package about the data of wrapper by the packet generation that wrapper is divided into pre-sizing, and wherein, transmission package comprises the information about the structure of transmission package; Service configuration information generation unit produces the service configuration information comprise about the information of channel with transmission package, and comprises the service configuration information in the information on services channel in precalculated position at least one transmission channel on the transport stream.

According to an aspect of the present invention, provide a kind of method that is used for the reception broadcast service of mobile communication, described method comprises: determine given transport channel by using from the service configuration information of information on services channel extraction; Extract transmission package from the transmission channel of determining; Extract information from the transmission package of extracting about transmission package; Obtain the combination that each has the wrapper of at least one transmission package by the information of extracting about transmission package; The combination that has the application data of at least one wrapper by using information about wrapper to obtain wherein, is extracted wrapper from the combination of wrapper.

According to an aspect of the present invention, provide a kind of equipment that is used for the reception broadcast service of mobile communication, described equipment comprises: the transmission channel determining unit, determine given transport channel by using from the service configuration information of information on services channel extraction; The transmission package extraction unit extracts transmission package from the transmission channel of determining; The transmission package information extraction unit is extracted information about transmission package from the transmission package of extracting; The wrapper assembled unit obtains the combination that each has the wrapper of at least one transmission package by using the information about transmission package; The application data assembled unit by using the combination that obtains to have the application data of at least one wrapper about wrapper information, wherein, extracts wrapper from the combination of wrapper.

According to an aspect of the present invention, provide a kind of method that sends stream, described method comprises: second transport stream that required being used to of portable terminal is received broadcast data is inserted first transport stream; First transport stream of second transport stream has been inserted in transmission.

Second transport stream can be inserted into the precalculated position on first transport stream.

Described method also can comprise: produce and to comprise about the information of the position of second transport stream and handle at least one signaling information in the required information of second transport stream, wherein, during sending first transport stream, also send signaling information.

According to an aspect of the present invention, provide a kind of method that receives stream, described method comprises: first transport stream of having inserted second transport stream by reception obtains second transport stream; Handle second transport stream.

Second transport stream can be inserted into the precalculated position on first transport stream.

During obtaining second transport stream, also can obtain to comprise about the information of the position of second transport stream and handle at least one signaling information in the required information of second transport stream, and the processing of second transport stream can comprise based on signaling information and handles second transport stream.

Embodiment

The invention pattern

For convenience of explanation, as abbreviation that uses in this specification of giving a definition and term:

Application layer: audio/video (A/V) stream, Internet protocol (IP) and non real-time (NRT) service

ATSC-M/H terminal: the terminal installation of visit ATSC-M/H service

The ATSC-M/H service: target is the ATSC broadcast service of mobile phone and handheld terminal

The ATSC-M/H system: the combination of service system and head end equipment, this combination make ATSC-M/H service in broadcasting and available on interactive channel alternatively

Bunch: the group of the sector (sector) of the placement Turbo sheet of any amount

Main service: first Priority Service that the user watches when opening power.This is the optional service of speech amplifier

Link layer: FEC coding, cut apart and Turbo stream and bunch between mapping

Link information table (LIT): the link information table between the service component everywhere that is placed on the MCAST parcel

Location map table (LMT): the location information table everywhere that is placed on the MCAST parcel

MCAST bag: the transmission package of definition in the MCAST bag

MCAST parcel: in the group of the MCAST of decoding after package pickup Turbo bag bag

MCAST stream: the sequence of MCAST bag

MCAST transport layer: the transport layer that in ATSC-MCAST, defines

Mpeg data: the TS of sync byte disappearance

Mpeg data bag: the TS bag of sync byte disappearance

Parcel: the mpeg data bag of one group of 624 TS

Sector: 8 byte spaces that in the AF of TS or MPEG packet, keep

The type of SIC:turbo stream, this turbo stream are the signaling information channels that comprises the information that is used to handle all turbo streams

Subchannel: the physical space that is used for A/V stream, Internet protocol (IP) and NRT data

Sub-data channel: the physical space that is used for the subchannel component

Transport layer: the transport layer that in ATSC-MCAST, defines

Turbo channel: the physical space of storage transport stream.The protection class of Turbo channel can be different

Turbo stream: the TS of turbo coding

VSB frame: by two data field sync segment and 624 (626 sections that the section of data+FEC) is formed

A-VSB: advanced VSB system

Adaptation field in the TS bag of AF:A/53 definition

ATSC: advanced television system committee

BD: broadcasting descriptor

BCAST:OMA mobile broadcast service starter

IRD: integrated receiver and decoder

DC: decoder configurations

DCI: decoder configurations information

DFS: data field is synchronous

DVB: number sub-video broadcasting

ES: elementary streams

EC channel: basic component channel

FEC: forward error correction

F/L: initial/last

The IMT:IP mapping table

The IPEP:IP wrapper

LMT: location map table

LIT: link information table

MAC: media access layer

MCAST: mobile broadcast

OEP: object encapsulation bag

OMA: Open Mobile Alliance

PCR: program clock reference

PSI: Program Specific Information

PSIP: Program Specific Information agreement

REP: real-time wrapper

SD-VFG: the service in each frame group is divided

SEP: signaling wrapper

SG: service guide

SIC: signaling information channel

SRC: auxiliary reference sequence

TS: transport stream

Below, with reference to the accompanying drawings exemplary embodiment of the present invention is described in detail.

Various types of services can be provided together or the service of particular type only is provided according to MCAST transmission system of the present invention, serve such as Internet protocol (IP).Fig. 1 illustrates the situation that various types of services are provided together.Fig. 2 illustrates the situation of the service that particular type only is provided.

Figure 1A and Figure 1B illustrate the MCAST data protocol stack according to the embodiment of the invention.With reference to Figure 1A and Figure 1B, send various types of contents, thereby provide various types of services by the MCAST transmission system.The example of the service that the MCAST transmission system is supported now (for example, service in real time, IP service and object download service) is described.Yet the type of the supported service of MCAST transmission system is not limited thereto.

In service in real time, receive data in real time, and expectation receives data as early as possible with its consumption.The type of real time data comprises video, audio frequency and the supplementary that occurs with audio/video (A/V).

IP service is that indication comprises the service of using IP-based data all types of broad terms of (such as, IP data broadcasting).In the IP service, expectation receives the IP-based data of real-time reception as early as possible with its consumption, or in the near future with the data consumption that receives.Perhaps, IP service can be expanded to downloading IP-based data as object and be stored in the storage arrangement, thus the service that can use afterwards.

The characteristics of object download service are: put receiving multimedia data or general object data at any time, and in response to control signal with its demonstration or storage.

The characteristic that the support of MCAST system is used to provide the data of service will be described now.

MCAST is supported in H.264/AVC video coding and the decoding among the IRD.In order to allow fully according to standard and the upward-compatible following version that strengthens, IRD can skip current " reservation " or with the function related data structure that is not realized by IRD.

About shelves and grade, MCAST supports following Code And Decode:

.encoding:H.264/AVC bit stream should meet and is used for the ITU-T of grade 1.3 that constraint_set1_flag equals the baseline shelves of " 1 " and recommends the qualification that H.264 (H.264 ITU-T recommends)/ISO/IEC 14496-10 describes.

.decoding: similarly, the grade 1.3 baseline shelves of supporting IRD H.264/AVC should be able to use constraint_set1_flag to equal " 1 " are decoded and rendered picture.

Under the situation of sampling length-width ratio, pros (1: 1) samplings length-width ratio is used for coding, each IRD can support to use pros (1: 1) the sampling length-width ratio that is used to decode to picture decoding with play up.

About random access point, recommend to send with random access point with two seconds each image parameters at least with sequence and setting.

About audio frequency, ATSC-MCAST supports MPEG-4 AAC shelves, MPEG-4 HE AAC shelves and MPEG-4 HE AAC v2 shelves.In order to allow to defer to ISO/IEC 14496-3[5 fully] and the upward-compatible following version that strengthens, IRD can skip current " reservation " or with the function related data structure that is not realized by IRD.

About audio mode, as comprise revisal 1 and 2[5] ISO/IEC 14496-3 in stipulate, according in the HE AAC v2 shelves grade 2 definition function with list, parameter stereo or the stereo encode audio of 2 channels, or according to the function that defines in the HE AAC v2 shelves class 4 with the multichannel encode audio.In addition, as comprise revisal 1 and 2[5] ISO/IEC 14496-3 in appointment, IRD can to single, the parameter stereo of the function of definition in the HE AAC v2 shelves grade 2 or 2 channels are stereo decodes.

About bit rate, during encoding, the maximum bit rate of stereo right audio frequency can not surpass 192kbit/s, and the maximum bit rate of multi-channel audio can not surpass 320kbit/s.During decoding, IRD will support HE AACv2 shelves, and the grade of selection is consistent with the maximum of stereo right 192kbit/s.

In addition, about matrix down conversion (downmixing), IRD will support the matrix down conversion that defines among the MPEG-4.

Yet MCAST is not limited to above-mentioned coding method.According to the stream of other coding method (for example, MPEG-2 Video/BSAC) coding also can by directly/the indirect expression coding method is sent out.

Fig. 2 illustrates MCAST data protocol stack according to another embodiment of the present invention.At length, Fig. 2 only illustrates and provides IP the situation of service by MCAST.

Covering is divided into signaling information and IP data program the MCAST bag and it is added the transmission head.Signaling information channel (SIC) comprises the signaling information about each turbo channel.

In the service of moving, be starved of quick service and obtain.That MCAST reduces is tuning to serving, the step of demultiplexing and decoding, thereby provides quick service to obtain.

In addition, MCAST supports the notion of main service.Main service is first Priority Service that the user watches with continuous mode.At service access turbo stream generally speaking, need to obtain SIC and also at first its decoding is used for the turbo processing.SIC comprises physics decoded information and some simple descriptions of all turbo services.Under the situation of main service, owing to defined visit information in (DFS) synchronously at data field, so can carry out fast access.Quick access method is described to Fig. 9 with reference to Fig. 7 later on.

The master serves and SIC should be in continuous transmission mode and SIC should be present in each frame.In continuous transmission mode, continuous transmit frame.In the burst transfer pattern, when particular point in time (seeing Figure 68 for details), send a plurality of frames.SIC is enforceable.Yet main service is optionally and depends on the service provider.

The structure of the schematically illustrated A-VSB MCAST transmission system according to the embodiment of the invention of Fig. 3.With reference to Fig. 3, MCAST supports various COS.The MCAST framework is made of four layers: application layer, transport layer, data link layer and physical layer.These layers are illustrated by left-to-right in Fig. 3.

Transport layer provides the application-oriented and segment information of application data, and uses predetermined grammer encapsulation primary unit.Be multiplexed in the regular length bag by particular type package application stream and with it, be called as " MCASTturbo stream ".Bag forms the turbo channel subsequently.

Link layer receives the turbo channel and with particular forward error correction (FEC) (for example code check), is applied to each turbo channel.The signaling information that is present among the SIC is important, therefore uses stronger FEC, thereby even also can receive the application of signaling with low signal-to-noise ratio (SNR) grade.Next, the turbo channel of application FEC is sent to A-VSB MAC layer with general TS bag.

A-VSB MAC layer will comprise the robust bag insertion of the receivable additional data of portable terminal or add general TS to.For example, the robust bag can be inserted into the sky bag zone of MPEG TS or be included in the exclusive data zone of MPEG-2 TS.If desired, the adaptation field (AF) in the general TS bag of A-VSB MAC layer open.In this case, defined and sent the SIC that signaling information is used to handle the robust bag, because SIC is present in the precalculated position or can easily obtains SIC by the mark that uses indication SIC position.As mentioned above, method or the information of A-VSB MAC layer regulation about the robust bag is inserted or adds general TS to.In order to obtain overall gain in the system that the 8-VSB system do not have originally and result's (raising) of efficient, keep compatible in, robust data is mapped to definite frame structure, is transmitted by signal and sends to the 8-VSB physical layer.In addition, vibration generator certainty ground under the control of MAC layer and is inserted into DFS with signaling information in physical layer operations.

MCAST provides real-time service, IP service and objects services to provide as application service.In these services at least one is multiplexed into the MCAST stream of each turbo channel.Particularly, MCAST can be provided for obtaining the main service of high speed initial service.

For various services are provided, MCAST provides at least a in four kinds of data types: real-time audio, real-time video, IP and object signaling.For example, in order to improve the service quality of application, when sending heap file, application layer FEC (AL-FEC) can be applied to object data stream or IP stream.With reference to Figure 57 AL-FEC is described later on.

The structure of the schematically illustrated A-VSB according to another embodiment of the present invention of Fig. 4 MCAST transmission system.With reference to Fig. 4, MCAST only supports the IP service.A-VSB MCAST transmission system identical with shown in Fig. 3 is except for each turbo channel, only with IP service multiplexing to a MCAST stream.

The schematically illustrated OMA-BCAST service layer of Fig. 5 according to the embodiment of the invention.In Fig. 5, " terminal " is corresponding with " ATSC-M/H terminal " according to function, and other element is corresponding with " ATSC-M/H system ".

● BCAST-5 is the broadcast service layer interface that is used for the top of management level.The bottom of this interface is Internet protocol (IP), its successively with the upper interface of interface X-3/X-4.

● BCAST-6 is the interactive service layer interface that is used for the top of management level.

● the BCAST-7 indication is used for the interface of user management and service/content affairs and supports signaling.

● the interaction of BCAST-8 indication service range.

● X-3 is considered to identical in this manual with X-4.Their indication bearing beds also carry the data relevant with interface BCAST-5.For the bottom, described interface is specified the A-VSB bearing bed.For top, described interface specifies the MCAST transmission of BCAST-5 to support to transmit.

● X-5 is considered to identical in this manual with X-6.Optional interactive network/the bearing bed of the data relevant with BCAST-8 with interface BCAST-6, BCAST-7 is carried in their indications.

Interface BCAST-1, BCAST-2, BCAST-3, BCAST-4, BDS-1, BDS-2, X-1 and X-2 and this specification are uncorrelated, will not be described at this.

The schematically illustrated terminal network protocol interface of Fig. 6 according to the embodiment of the invention.In Fig. 6, will use the notion of BCAST interface and MCAST structure to describe ATSC-M/H terminal-network interface in detail.Fig. 6 illustrates to relate to and not only is used for the broadcasting interactive pattern and also is used for the only protocol stack of the proposition of the ATSC-M/H of broadcast mode.Stack is divided into two major parts.A major part is an ATSC-M/H service layer, is made of method that may be used on all ATSC-M/H receivers and optional interactive approach.Be bearing bed below the ATSC-M/H service layer, describe ATSC-M/H bearing bed, any optional interactive bearing bed of other description for one in the bearing bed.

Now the Signalling method to the MCAST system is described.The important need of mobile broadcast is the high-speed service visit.ATSC-MCAST is provided for two kinds of representative modes of high-speed service visit: the main division of serving and being used for the ES signaling information of real-time media service.With reference to Fig. 7 the high-speed service access method of ATSC-MCAST system support is described later.

In addition, the ATSC-MCAST system can provide SIC.SIC can comprise the essential information of handling the turbo channel.SIC can comprise the user and browse the indispensable essential information of broadcasting.For example, SIC can comprise physics decoded information or concise and to the point description the as optionally all turbo services.In order to handle at first treatment S IC of other turbo channel.With reference to Figure 10 SIC is described later on.

Main service and SIC exist with continuous transmission mode, and SIC can be present in all frames.Though SIC is indispensable element, the service provider can determine whether to provide main service.

Fig. 7 illustrates the high-speed service access method that the ATSC-MCAST system according to the embodiment of the invention is supported.With reference to Fig. 7, provide main service according to the high-speed service access method.Main service receives broadcast service for the user and has high priority.

Particularly, Fig. 7 A illustrates the processing according to the service of the reception in the MCAST system of the embodiment of the invention.

Apparatus for receiving broadcasting is checked the position of SIC by explaining DFC.Subsequently, apparatus for receiving broadcasting visits SIC based on the position of the SIC that checks, and is indicated as arrow (1).SIC comprises about the information of the quantity of the turbo channel of configuration frame, about the information (turbo channel-decoding information, metamessage etc.) of the structure of each turbo channel.

Apparatus for receiving broadcasting visits the turbo channel of expectation by using the information that comprises among the SIC, and is indicated as arrow (2), and obtains the data of application layer by the turbo stream that the turbo channel of handling by expectation receives, indicated as arrow (3).

As mentioned above, receive broadcast service in order to allow the user, owing to must after power supply supplies to apparatus for receiving broadcasting and receives broadcast singal, carry out above-mentioned processing, so need the scheduled wait time., proposed to be used as the service that acquiescence provides in the apparatus for receiving broadcasting operation and before receiving SIC in order to solve the problem that broadcast service is provided after explaining SIC fully.This service is called as " main service ".Main service is provided by broadcast service provider, thereby the user can at first browse it.

Fig. 7 B illustrates according to being provided by the MCAST system of the embodiment of the invention and leads the processing of serving.In Fig. 7 B, be used to visit the precalculated position that main visit information of serving is present in transmission frame.

Under situation, can in DFS, define the visit information that is used to visit main service according to the ATSC transmission frame of ATSC standard.Therefore, apparatus for receiving broadcasting can directly be visited the turbo stream that is used for main service from DFS, and needn't search and treatment S IC, and is indicated as arrow (1).

Fig. 7 C illustrates the method that is used for the turbo stream of main service according to the transmission of the embodiment of the invention.

Flow to be formed for the main turbo that serves with the identical method that forms other turbo stream, and similar to other turbo stream, can when the turbo stream that will be used for main service is mapped to transmission frame, it be sent.Yet, can send the turbo stream that is used for main service by the remaining data zone of transmission frame.Usually, the size in the remaining data zone of transmission frame is littler than the channel that is used for main service, thereby divides the turbo stream of main service and send by a plurality of transmission frames according to the size in the remaining data zone of transmission frame.

Can send the signaling information that to describe afterwards in a similar manner.That is to say, can send signaling information by the remaining data zone of independent channel (such as SIC) or transmission frame.Now the method that allows user's acquisition signaling information when browsing main service is described with reference to the situation that sends signaling information by independent channel with by the regional situation that sends signaling information of the remaining data of transmission frame.

Fig. 7 D is the method that obtains signaling information in the MCAST system that illustrates according to the embodiment of the invention.

At operation S710, search broadcast singal when power supply supplies to apparatus for receiving broadcasting.

At operation S720, apparatus for receiving broadcasting is handled the turbo stream that is used for main service.Can in additional turbo channel, send the turbo stream that be used for main service, maybe the turbo stream that is used for main service can be divided into several sections and transmit in the remaining data zone of transmission frame.

At operation S730, apparatus for receiving broadcasting provides main service by use the result who handles in operation S720.With the operation S730 while, executable operations S740 is to obtain signaling information.The information indication still sends signaling information or the turbo stream that is used for main service by the remaining data zone of transmission frame by independent channel, and can be stored in the presumptive area of transmission frame, use described information acquisition to be used for the signaling information and the turbo stream of main service.Under the situation of ATSC system, described information can be stored among the DFS.

If send signaling information by independent SIC, then executable operations S742 is to obtain signaling information by treatment S IC.If signaling information is divided into several sections and transmits by the remaining data zone of transmission frame, then executable operations S744 obtains signaling information from the remaining data zone of transmission frame.

At operation S750, determine whether signaling information is updated.If upgraded signaling information, the signaling information of executable operations S740 to upgrade once more then.If do not upgrade signaling information, then use signaling information to carry out S760, switch thereby carry out channel.

Fig. 8 illustrates the high speed access method of being supported by the ATSC-MCAST system according to another embodiment of the present invention.With reference to Fig. 8, divide signaling information and be used for the high-speed service visit.

Under the situation of real-time rich (rich) media services, the information such as PSI (PAT, PMT, CAT or NIT) of at first should obtaining is to decode to the multi-medium data in the radio receiver.The user can watch video after receiving all PSI.Though receiver has obtained decoded frame, the user must wait for up to receiver from PSI Rcv decoder customizing messages.

ATSC-MCAST proposes to send the multimedia decoder customizing messages descriptor that is included in each multimedia element stream (ES).This means that decoder configurations information and multi-medium data are sent simultaneously.Therefore, receiver does not need to wait for acquisition PSI.

More specifically, Fig. 8 A is the diagrammatic sketch that the service access time among the ATSC-MCAST according to the present invention and the service access time in the conventional broadcast system are compared.

For example, the transmission period of supposing PAT and PMT is 0.5 second, and the transmission period of I frame is delta second.In the worst case, owing to must obtain PAT, PMT and I frame, so need 0.5+0.5+delta to see first video second.Yet, the I frame that ATSC-MCAST only needs delta to obtain to exist on the receiver second.Therefore, ATSC-MCAST can be to its fast processing when receiving the I frame.With reference to Fig. 8 B the decoder customizing messages is described.

Fig. 8 B illustrates the decoder configurations information (DCI) of the embodiment of the invention.DCI is included in " DCI_field " field.

" DCI_field " field shown in Fig. 8 B relates to the real-time media in the MCAST encapsulated layer." decoder customizing messages " field in being included in " DCI_field " field comprises the customizing messages that is used for media decoder." DCI_field " field can exist only in the wrapper that is used for real-time media.

Content type in " Content Type " field indication stream.According to the value of this field example as the content type of giving a definition:

[table 1]

Value	Content type is described
		0	Keep
1	H.264/AVC
		2	HE?AAC
3-255	TBD

" Max Decoding Buffer Size " field is with the length of byte instruction decoding buffering.The definition of buffering is according to the type of stream.

" DSI length " field is with the length of byte indication " decoder specific Information " field.

" Decoder specific Information " field comprises the decoder customizing messages." Decoderspecific Information " field depends on the standard of stream type and instruction decoding device.

Fig. 9 illustrates the high speed access method that ATSC-MCAST system is according to another embodiment of the present invention supported.

In Fig. 9, supposing provides IP data broadcasting or IP service by MCAST.Usually, must provide IP data broadcasting or IP service and service guide (SG) simultaneously, so that IP data broadcasting or IP to be provided service.Generic broadcasted receiver must at first obtain SG to obtain IP data broadcasting or IP service.Below, the SG that defines in OMA-BCAST is used as the example of SG, but is not limited thereto.Provide SG all can be used about any kind of the information of the IP data broadcasting that is used for IP data broadcasting or IP service or IP service or visit information.

The user must at first obtain SG and serve to receive by the IP data broadcasting, thereby the necessary standby of apparatus for receiving broadcasting is up to receiving SG, no matter whether the user needs SG.In order to address this problem, to send the information that needs to receive IP data broadcasting or IP service, thereby service can at first be provided and not receive SG.Therefore, can carry out the high-speed service visit according to IP data broadcasting or IP service.

More specifically, Fig. 9 A illustrates the structure of the transmission data of visiting according to the high-speed service that is used for the IP data broadcasting of the embodiment of the invention.

SIC comprises the IP information that is used to receive SG, such as the IP address of SG.Can maybe can indicate SG to be included in the IP information with being broadcasted fixed address that receiving system knows IP address as SG.For example, can be by the transmission of the SG in the mark indirect expression IP information of using indication and the corresponding IP information of SG.

In addition, SIC can comprise the additional information that is used for before apparatus for receiving broadcasting obtains part or all of SG the user being provided service.Below, for convenience of explanation, obtaining can will to be called as " exemplary service " to the service that the user provides before the part or all of SG.Additional information can comprise and be used to provide the information of serving with corresponding IP data broadcasting of exemplary service or IP, the perhaps information of the position of indication information.In addition, additional information can comprise the IP address about exemplary service.In the position of IP address indication, exist to be used to provide the stream of exemplary service or to provide exemplary service required information.The example of this information is flute session information, Session Description Protocol (SDP) or stream process information.

In the MCAST system, can there be one or more exemplary service.If a plurality of exemplary service are provided, then the information about exemplary service is supplied to apparatus for receiving broadcasting, thereby the user can select one of them.When the user has selected in a plurality of exemplary service one, provide the exemplary service of selection to obtain SG fully up to apparatus for receiving broadcasting.After obtaining SG fully, the user can select the service expected once more based on SG.

Perhaps, only can provide an exemplary service, even or also can provide the exemplary service of selection when a plurality of exemplary service is provided and need not user's selection.

In the turbo channel, send the IP stream that is used to provide the IP stream of exemplary service and is used to provide generic broadcasted service.

Fig. 9 B is the flow chart that illustrates according to the high-speed service access method that is used for the IP data broadcasting of the embodiment of the invention.

At operation S910, obtain IMT.The map information of IMT indication IP address and turbo interchannel, and can be sent out by SIC.

At operation S920, determine whether transport stream provides exemplary service.If exemplary service is not provided, then executable operations S932 is to obtain SG.In this case, can not provide broadcast service up to obtaining predetermined portions or whole SG to the user.If exemplary service is provided, then executable operations S934 is to provide exemplary service to the user.That is to say that provide exemplary service by the stream that provides by the information of using about exemplary service is resolved, this exemplary service comprises in SIC (or DFS) and IMT.Simultaneously, executable operations S936 in backstage is to obtain SG.

After obtaining SG fully, executable operations S940 is to determine whether to receive user's input.If do not receive user's input, then executable operations S952 with repetition exemplary service or standby up to the input that receives the user.If receive user's input, then executable operations S954 is with to handling with the corresponding IP stream of being selected by the user of channel and reproducing.

Figure 10 A illustrates the service configuration information according to the embodiment of the invention.

SIC comprises signaling information, such as the information about the turbo channel information.Particularly, SIC has and comprises about information, the time slicing information of the turbo channel position information of each the turbo channel in the A-VSB frame and be used to handle the information of each turbo channel.SIC can be one type a turbo channel, is present in the precalculated position in the A-VSB frame.

Now the structure of service configuration information is described with reference to Figure 10 A.

Whether " turbo_channel_information_flag " field indication turbo channel information exists.In current embodiment, " turbo_channel_information " field comprises the turbo channel information that is described in detail with reference to Figure 13 afterwards.

Whether the descriptor of " additional_service_information_flag " field indication turbo service exists.In current embodiment, " additional_service_information " field comprises the additional service information of all turbo channels.To be described in detail additional service information with reference to Figure 14 afterwards.

" padding_flag " field indicates whether to exist the fill area.

" version_indicator_information () " field is indicated the version of service configuration information and when is upgraded this information.In current embodiment, indicate the version of " ServiceConfigurationInformation () " field and when upgrade this field.With reference to Figure 11 " version_indicator_information () " field is described later on.

The total quantity of frame in the quantity of " frame_group_information () " field indication present frame and the frame group.With reference to Figure 12 " frame_group_information () " field is described later on.

" byte " field is indicated byte of padding and is used by encoder.This field is used to fill the unassigned zone with 0xFF value.

" CRC " field comprises crc value.

Figure 10 B illustrates service configuration information according to another embodiment of the present invention.

" current_frame_number " field is indicated current frame number.Frame number increases by 1 in the frame group.

The sum of the frame in " total_frame_number " field indication frame group.

In current embodiment, according to current frame number, service configuration information can comprise the information about TCC or broadcasting descriptor (BD).That is to say,, then comprise information,, then comprise information about BD if current frame number is an odd number about TCC if current frame number is an even number.

The sum of the frame before the version updating of " TCC_next_updata_offset " field indication turbo channel configuration information.In current embodiment, " TCC_next_updata_offset " field comprises the turbo channel configuration information.

" TCC_version " field is by 3 version numbers that constitute and indicate the TCC field.In the field that relates to TCC one when changing, version number should increase by 1 mould 8.

The sum of the turbo channel that " number_of_turbo_channel " field indication A-VSB carries.The quantity that has referred to also specify the SRS channel that disperses in this field.

" turbo_channel_configuration " field comprises the turbo channel configuration information.To be described in more detail " turbo_channel_configuration " field with reference to Figure 16 afterwards.

The frame number before the BD is upgraded in the indication of " BD_next_update_offset " field.

" BD_packet () " field comprises the broadcasting descriptor.To be described in more detail " BD_packet () " field with reference to Figure 22 afterwards.

Figure 10 C illustrates service configuration information according to another embodiment of the present invention.Service configuration information shown in Figure 10 C identical with shown in Figure 10 B is except " wake_up_mode " field.

The TCC interpretive model of the subsequently TCC of " wake_up_mode " field indication in " TCC_next_updata_offset " field.For example, if the value of this field is set to " 1 ", then can resolve TCC subsequently.

Figure 11 illustrates the structure according to the version_indicator_information () field shown in Figure 10 A of the embodiment of the invention.

In mobile broadcast, service configuration information is extremely important." version_indicator_information () " field that is described is comprised the lastest imformation of service configuration information.Therefore, the indication of " Service Configuration Informaton () " field is with the exact position and the version of the frame of change.

The sum of the frame that the indication of " frame_counter " field sent before service configuration information changes.When receiving transmission frame, service configuration information will change.

The version of " version " field indication service configuration information.When service configuration information changed, the value of version all increased by 1.

Figure 12 illustrates the structure according to " frame_group_information () " field shown in Figure 10 A of the embodiment of the invention.

The frame group is the group by the frame of MCAST frame burst establishment, and begins periodically to take place with same number of frames.In transmission system, will draw together at least one frame and be called as frame about the transmits data packets of a service and divide chip technology with the technology that burst mode sends this frame.When using frame to divide chip technology, have the frame that does not comprise about the data of purpose service, and terminal can enter idle condition and not receive signal in the part of transmit frame, thereby save energy.The indication of burst part comprises the frame group about the data of purpose service.And after can using the frame number of describing is expressed.

The quantity of the present frame in " current_frame_number " field indication frame group.Frame number can increase by 1 in the frame group.

The sum of the frame in " total_frame_number " field indication frame group.

Figure 13 illustrates the structure according to the turbo_channel_information () field shown in Figure 10 A of the embodiment of the invention.

" turbo_channel_information () " field indication turbo channel information also comprises the indispensable information of a plurality of turbo channels.The information whether physics decoded information, indication MCAST frame burst exist and the sum of turbo channel are key factors.Particularly, when supporting MCAST frame burst, the sum of the frame piece of the quantity of " turbo_channel_information () " field indication present frame and turbo channel that reception is used to select.

" version " field is by 3 versions that constitute and indicate the turbo channel information.In current embodiment, version can increase by 1 when " turbo_channel_information () " field change.When version changes, should send the turbo channel information in advance.

According to embodiments of the invention, the sum of turbo channel in " Turbo_svc " field indication A-VSB system.

" Turbo_svc_id " field is indicated the identifier of current turbo channel.

" Is_Enhanced " field designation data is basic data or growth data.For example, as " scalable " when Video Codec is used, can in independent turbo channel or sub-data channel, comprise elementary streams and extended flow.If in independent turbo channel, comprise elementary streams and extended flow, then by using " Is_Enhanced " field can distinguish elementary streams and extended flow.

" MCAST_Frame_Slicing_flag " field specifies whether send current turbo stream with burst mode.

" MCAST_AL_FEC_flag " field specifies current turbo stream whether to support application layer FEC (AL-FEC).

The starting position of " turbo_start_position " field indication turbo channel.

The index of " turbo_fragments_bits " field indication turbo channel length.

" turbo_arrange_index " field indication quantity.If quantity is n, mean that then each n comprises turbo channel segment.

The index of " coding_rates " field indication turbo channel code rate.

The beginning frame number of " start_frame_number " field indication current turbo service when having MAST frame burst.

" frame_block_number " field is indicated the sum of current turbo channel.

Figure 14 illustrates the structure according to the additional_service_information () field shown in Figure 10 A of the embodiment of the invention.

SIC is provided for carrying the structure of additional information.In current embodiment, " additional_service_information " field comprises additional information.Can use a plurality of block movements " additional_service_information " field, and the current time index and the final index of " additional_service_information " field indication section piece.

The index of the current time index in the sum of " current_index " field indication description block.

The index of the last piece in the sum of " last_index " field indication description block.

The length of " length " field indication additional service information.

The grammer of " user_data " field indication customer-specific data should be deferred to＜tag〉＜length〉＜data 〉.Definition tag value in table 2.

[table 2]

Tag	Identifier
			0	Keep
1	Turbo channel information descriptor
		2-255	TBD

If the tag value is " 1 ", the turbo channel information descriptor that is described with reference to Figure 15 after then " user_data " field comprises.

Figure 15 illustrates the structure according to " Turbo_channel_information_description () " field of the embodiment of the invention.The structural similarity of the structure of " Turbo_channel_information_description () " field and " Turbo_channel_information " field shown in Figure 13.

Figure 16 A illustrates the structure according to the turbo_channel_configuration () field shown in Figure 10 B of the embodiment of the invention.

" turbo_channel_configuration () " field comprises the indispensable configuration information of turbo channel.Similar to " turbo_channel_information " field shown in Figure 13, " turbo_channel_configuration () " field can comprise important information, the information that whether exists such as physics decoded information, indication frame burst and about the information of turbo total number of channels.

" selector_bits " field indicates whether to exist SRS channel, turbo channel or " Turbo_channel_descriptor_loop " field of frame burst, dispersion.Following table 3 illustrates the definition according to " selector_bits " field of the value of " selector_bits " field.In table 3, " x " can be " 0 " or " 1 ".

[table 3]

The selector_bits value	Identifier
		0B1xx	The frame burst
0Bx1x	The SRS channel position that disperses
		0Bx0x	The turbo channel position
0Bxx1	Turbo_channel_descriptor_loop

The identifier of " Turbo_channel_id " field indication turbo channel.When comprising the concrete identifier of turbo channel, this field is used for the identification of turbo channel.Yet if this field has predetermined value, for example 0x1f should be applied to descriptor all turbo channels.For example, when comprising that field about the information of frame group is updated and " Turbo_channel_id " when field is 0x1f, the information about the frame group should be applied to " turbo_channel_configuration " field about all channels.

The indication of " start_frame_number " field is with the quantity of the start frame of the service of burst mode transmission.Start frame is to be received to obtain first frame of service.

" frame_count " field indication will be received the sum with the frame of the service that obtains to be in burst mode.

" reserved " field is the reserved field that uses after being used for.The value of " reserved " field is set to " 1 ".In present description, the function of " reserved " field is identical, and is therefore not described here.

Bunch size of the SRS stream that the indication of " turbo_cluster_size " field disperses in a plurality of sectors.

" is_enhanced " field indicates current turbo channel whether to comprise the enhancing data.If the value of this field is set to " 1 ", mean that then current turbo channel comprises the enhancing data.In this case, basic channel should be shared identical turbo channel id with the enhancing channel.Receiver can receive these two channels and they are provided as a channel.For example, if use " can expand " Video Codec, then the quality of the video that provides when receiving two channels is than the height when receiving individual channel.

" adaptive_time_slicing_flag " field indicates current turbo channel whether to support the adaptation time burst.If the value of this field is set to " 1 ", then mean current turbo channel support adaptation time burst.According to this field change physical configuration.

" coding_rates " field indication turbo channel encoding rate index.

" full_packet_flag " field indicates whether to send by sky bag or specific PID bag first sector of turbo stream.If the value of this field is set to " 1 ", mean that then sky bag by not having AF field or specific PID bag carry first sector.Similarly, if the value of this field is set to " 0 ", then carry first sector by AF.

The physics starting position of " turbo_start_sector " field indication turbo stream.

" turbo_cluster_size " field is indicated bunch size of the turbo stream in a plurality of sectors.

" Turbo_channel_descriptor_loop " field provides additional, the optional information about the turbo channel.With reference to Figure 17 this field is described in more detail later on.

Figure 16 B illustrates according to another embodiment of the present invention the structure of " turbo_channel_configuration () " field.

The structure of " turbo_channel_configuration () " field shown in Figure 16 B is identical with the structure of " turbo_channel_configuration () " field shown in Figure 16 A, except " enhanced_protection_mode " field.

" enhanced_protection_mode " field indicates whether to support to strengthen protected mode.Have such a case: type or communication environment according to the data that send can easily be revised mistake.In this case, the length by the payload in reducing to wrap and increase the execution error correction easily of RS byte.If the value of this field is set to " 1 ", then the payload length of transmission package is 168 byte longs, and the RS byte is 40 bytes.Yet if the value of this field is set to " 0 ", payload length is 188 byte longs, and the RS byte is 20 bytes.

Figure 17 illustrates the structure according to " descriptor_loop () " field shown in Figure 16 A of the embodiment of the invention.

" descriptor_loop () " field can start the signaling about the additional information of each turbo channel.Should come the change of signal transmission information by " descriptor_loop () " field, such as frame group quantity, about the duration of the time slicing of turbo channel and the position of turbo channel.

" next_indicator " field is the existence of 1 bit field and indication " descriptor_information " field.If the value of this field is set to " 1 ", then be " descriptor_information " field subsequently.If the value of this field is set to " 0 ", then " descriptor_information " field is not present in " descriptor_loop () " field.

The identifier of " tag " field indication " descriptor_information " field, such as following table 4 definition.

[table 4]

Tag	Describe
		0	Frame_Group_Update
1	Frame_Slicing_Duration_Update
		2	SRS_position_Update
3	Turbo?Channel?Position?Update
		4-127	Use after being preserved for

The total length with byte of " length " field indication " descriptor_information " field.

Value according to " tag " field can differently define " descriptor_information " field.Be described in more detail later on reference to Figure 18 " descriptor_information " field of definition in Figure 21 his-and-hers watches 4.

Figure 18 illustrates the structure of " frame_group_update " field when the value of " tag " field shown in Figure 17 is set to " 0 ".

" frame_group_update " can be used to the change of the time period of time slicing.That is to say that " frame_group_update " field can be used to upgrade the sum of frame group.Can be before upgrading at least 6 seconds signaling " frame_group_update " fields.The information that comprises in this field should be applied to the configuration of all turbo channels.When receiving this field, " sector bits " field can be set to indicate " 0x001 " of frame group renewal, " Turbo_channel_id " field can be set to predetermined value, for example, determines the frame group is upgraded " 0x1f " that is applied to all turbo channels.

The sum of " next_update_offset " field indication remaining frame before the quantity of using new GOF (groups of frame).This field has the correlation based on above-mentioned " TCC_next_update_offset " field.Therefore, the value of this field is changed when upgrading TCC.That is to say that the value of this field is not based on frame by frame and changes, but this field changes along with the change of TCC version, thereby reduced to upgrade the quantity of the number of times of TCC.

The sum that " new_GOF " field is indicated new GOF.

Figure 19 A illustrates when the value of " tag " field shown in Figure 17 is set to " 1 " structure according to " Frame_Slicing_Duration_update " field of the embodiment of the invention.

When changing, the quantity of the frame of the configuration frame burst in the current turbo channel uses " Frame_Slicing_Duration_update " field.Following equation (1) can be used for calculating the pause duration when the application of frame burst.In this case, in the unit of the quantity of the frame of configuration frame group, carry out and upgrade.

(TCC_next_update+start_frame_number)*48.4ms+jittertime (1)

In equation (1), " jitter time " meaning is the required time that is provided with of physical layer, and " 48.4ms " meaning is the cycle that sends the VSB frame.Yet, the invention is not restricted to the VSB frame.If determine transmission period by another transmission frame and another frame group.

The indication of " new_start_frame_number " field is used for the quantity of the new start frame of the frame burst in the GOF.

The indication of " new_frame_count " field is used for the quantity of the new end frame of the frame burst in the GOF.

Figure 19 B illustrates the structure of " Frame_Slicing_Duration_update " field when the value of " tag " field shown in Figure 17 is set to " 1 " according to another embodiment of the present invention.

Equation (2) indication acquisition is used for the required time of first frame of the frame burst of " descriptor_information " field, and its grammer is shown in Figure 19 B:

(TCC_next_update_offet+next_update_offset)*48.4ms+jittertime (2)

" descriptor_information " field shown in Figure 19 B identical with shown in Figure 19 A is except " next_update_offset " field.

The indication of " next_update_offset " field is based on the position of the frame of the new frame burst information of application of " TCC_next_update_offset " field.

The structure of " SRS_position_update " field when Figure 20 A illustrates the value when " tag " field shown in Figure 17 according to the embodiment of the invention and is set to " 2 ".

When disperseing the position change of SRS, use " SRS_position_update " field.Time point in the time of can be based on the beginning correlation of GOF ground computing application new location information.

" start_frame_offset " field is indicated the quantity of the start frame that will use new SRS position in the new GOF.

" turbo_cluster_size " field is indicated new turbo bunch size in a plurality of sectors.

Figure 20 B illustrates the structure of " SRS_position_update " field when the value of " tag " field shown in Figure 17 is set to " 2 " according to another embodiment of the present invention.

" SRS_position_update " field identical with shown in Figure 20 A is except " next_update_offset " field.

Next renewal position of subsequent value is used in the indication of " next_update_offset " field.

Can be by the value of " TCC_next_update_offset " field be explained the time point of using new location information in the Calais mutually with the value of " next_update_offset " field.Perhaps, the value of " next_update_offset " field correlation that can be used as the value of " TCC_next_update_offset " field uses.

The structure of " turbo_channel_update " field when Figure 21 A illustrates the value when " tag " field shown in Figure 17 according to the embodiment of the invention and is set to " 3 ".

When upgrading the position of turbo channel, use " turbo_channel_update " field.Should use this field afterwards receiving " TCC_next_update_offset " that indication receives new GOF.

" start_frame_offset " field is indicated the quantity of the start frame in the new GOF.Can use " turbo_cluster_size " field newly from this frame.

" is_enhanced " field indicates current turbo channel whether to comprise the enhancing data.If the value of this field is set to " 1 ", mean that then current turbo channel comprises the enhancing data.In this case, basic channel can be aforesaid identical turbo channel id with strengthening channel.

The index of " coding_rates " field indication turbo channel encoding rate.

" full_packet_flag " field indicates whether by first sector in sky bag or the specific PID bag transmission turbo stream.If the value of this field is set to " 1 ", then mean first sector that sky bag by not having AF field or specific PID bag carry turbo stream.If the value of this field is set to " 0 ", then carry first sector by AF field.

The physics starting position of " turbo_start_sector " field indication turbo stream.

" turbo_cluster_size " field is indicated bunch size of the turbo stream in a plurality of sectors.

Figure 21 B illustrates the structure of " turbo_channel_update " field when the value of " tag " field shown in Figure 17 is set to " 3 " according to another embodiment of the present invention.

" turbo_channel_update " field shown in Figure 21 B identical with shown in Figure 21 A is except " next_update_offset " field, " adaptive_time_slicing_flag " field and " enhanced_protection_mode " field.

The renewal position that subsequent value is used in the indication of " next_update_offset " field.Can be by the value of " TCC_next_update_offset " field be explained the time point of using new location information in the Calais mutually with the value of " next_update_offset " field.Otherwise the correlation that the value of " next_update_offset " field can be used as " TCC_next_update_offset " field uses.

" adaptive_time_slicing_flag " field indicates current turbo channel whether to support the adaptation time burst.If the value of this field is set to " 1 ", then mean current turbo channel support adaptation time burst.Physical configuration according to this field change " turbo_channel_update " field.

" enhanced_protection_mode " field indicates current turbo channel whether to support to strengthen protected mode.If the value of this field is set to " 1 ", mean that then current turbo channel support strengthens protected mode.

For example, if the value of this field is set to " 1 ", then the payload length in the transmission package can be 168 bytes, and the length of RS byte can be 40 bytes, strengthens protection to provide.Yet if the value of this field is set to " 0 ", payload length can be 188 bytes, and the length of RS byte can be 20 bytes.

Figure 22 A illustrates the structure according to " BD_Packet " field of the embodiment of the invention.

" BD_Packet " field is applied to send the additional information about turbo stream, such as IP mapping table and turbo channel lastest imformation.This field should be applied to all turbo channels and can carry this field in several segments.

" first_last " field is made up of two positions and is specified bag is first bag or last bag, such as table 5 definition.

[table 5]

Value	Describe
		00	The sequence tundish
01	Sequence is wrapped at last
		10	Sequence first bag
11	Bag only

" padding_flag " field indicates whether to exist byte of padding.

" BD_version " field is formed the also version number of designated broadcast descriptor (BD) by three positions.When upgrading BD, this version number should increase by 1 mould 8.

The quantity of the byte of the filling in " padding_length " field indication " padding_flag " field.

" padding_byte " field has can be by one or more 8 place values that are set to " 0xFF " of encoder insertion.The decoded device of this field abandons.

" BD_Fragment " field comprises the BD segment.That is to say that BD is divided into a plurality of fault blocks and is transmitted by " BD_Fragment " field.With reference to Figure 23 BD is described later on.

Figure 22 B illustrates according to another embodiment of the present invention the structure of " BD_Packet " field.

" BD_Packet " field shown in Figure 22 B identical with shown in Figure 22 A is except " System_time_flag " field and " System_time " field.

" System_time_flag " field indicates whether to exist system time information.In this manual, " System_time " field comprises system time information.If the value of this field is set to " 1 ", then mean to have " System_time " field.

" System_time " field indication mechanism time.Can come the expression system time based on absolute time, such as UTC, it is identical and not to the place, but can be based on being expressed by the time of transmitting system influence.System time can be used to correction time in terminal.Like this, can use difference (shift time) according to the place.System time is used to make the time of serving the provider identical with the time of serving the recipient, or proofreaies and correct these time.For example, can comprise temporal information, for example each service beginning or time of finishing such as the information of electronic service guidebooks (ESG).In this case, apparatus for receiving broadcasting can accurately begin or finish to offer user's service by the using system temporal information according to arrangement of time.

Figure 23 illustrates the structure according to the broadcasting descriptor (BD) of the embodiment of the invention.

BD is several BD segments by burst and is mapped to " BD_Packet " field.

The sum of " broadcast_descriptor_information " field that the indication of " number_of_BD " field will be described afterwards.

The indication of " tag " field is included in the type of the data in " broadcast_descriptor_information " field.Data type according to the value of this field is as follows:

[table 6]

Tag	Describe
		0	Forbid
1	Channel_info_update
		2	IP_mapping_descriptor
3-127	Keep

The length of " length " field indication " broadcast_descriptor_information " field.

Determine the type of the data in " broadcast_descriptor_information " field according to table 6.The structure according to " broadcast_descriptor_information " field of data type is described later on reference to Figure 24 and Figure 25.

The structure of " Channel_info_update () " field when Figure 24 A illustrates the value when " tag " field shown in Figure 23 according to the embodiment of the invention and is set to " 1 ".

" Channel_info_update " is used to upgrade the turbo channel information.The time of new turbo channel information is used in this field indication.Can comprise version and turbo channel configuration information in this field.

The indication of " update_frame_counter " field is based on the relevant frame number of the reference frame number of using new TCC.

The version of the information of " new_TCC_version " field indication TCC.When carrying out renewal, this field should be identical with " TCC_version " field in being present in SIC.

The quantity of " number_of_turbo_channel " field indication new_turbo_channel_configuration () field subsequently.

The structure of " new_turbo_channel_configuration () " field can be identical with the structure of above-mentioned " turbo_channel_configuration () " field.

Figure 24 B illustrates the structure of " Channel_info_update () " field when the value of " tag " field shown in Figure 23 is set to " 1 " according to another embodiment of the present invention.

" Channel_info_update () " field shown in Figure 24 B identical with shown in Figure 24 A is except " next_update_offset " field.

The indication of " next_update_offset " field will be used the frame of new TCC.This field has the correlation based on " BD_next_update_offset " field.

Figure 24 C illustrates according to another embodiment of the present invention the structure of " Channel_info_update () " field.

" Channel_info_update () " field shown in Figure 24 C identical with shown in Figure 24 B is except " update_frame_counter " field and " new_TCC_version " field.

The indication of " update_frame_counter " field will be used the frame of new TCC.

The version information of " new_TCC_version " field indication TCC.Version value can be identical with the version value of TCC among the SIC.

IP mapping descriptor when Figure 25 A illustrates the value when " tag " field shown in Figure 23 according to the embodiment of the invention and is set to " 1 ".

IP mapping descriptor is provided at the map information of IP stream and turbo interchannel.In at least one be included in IP mapping descriptor in the simple description of turbo channel information, IP address, MAC Address and IP.In current embodiment, IP mapping table (IMT) indication IP mapping descriptor.

" Extended_version " field indicates whether to upgrade IMT.If the value of this field is set to " 1 ", then mean and do not upgrade IMT, even under the situation of having upgraded " BD_version_number " field.

The sum of " Number_of_IP " field indication IP stream.

" Reference_ch_flag " field indicates whether current channel is reference channel.If the value of this field is set to " 1 ", mean that then current channel is a reference channel.The example of reference channel can be a set ESG channel.ESG information is bulk information, thereby usually, ESG information may not can be included in the channel fully.In this case, apparatus for receiving broadcasting can only be collected all ESG information by reference channel.Therefore, the amount of the ESG information that sends by independent channel is littler than the amount of the ESG information that sends by reference channel, thereby content is distributed more high bandwidth.

" turbo_channel_id " field is indicated the identifier of current turbo channel.

The position of the IP stream in " LMT_index_number " field indication turbo channel.IP stream is mapped to the sub-data channel in the turbo channel.

The quantity of " Number_of_IP_ch_descriptor " field indication " IP_channel_description " field subsequently.

" IP_channel_description " field comprises the additional information of IP channel.To be described in detail this field with reference to Figure 26 afterwards.

Figure 25 B illustrates IP mapping descriptor according to another embodiment of the present invention.

IMT shown in Figure 25 B identical with shown in Figure 25 A is except " number_of_channel " field and " VMI " field.

The sum of " number_of_channel " field indication turbo channel or sub-data channel.

The identifier of the sub-data channel in " VMI (virtual map ID) " field indication turbo channel.

Figure 26 illustrates the structure according to " IP_channel_description " field shown in Figure 25 A of the embodiment of the invention.

" IP_channel_description " field is used to send above-mentioned additional information about the IP channel.

" tag " field is used for the data that identification is included in " IP_channel_table " field.Data type according to the value of this field is as follows:

[table 7]

Tag	Describe
		0	Forbid
1	IP_address_table
		2	MAC_address_table
3	Text_description_table
		4-255	Keep

The indication of " length " field is with the length of " IP_channel_description " field of byte.

" IP_channel_table () " field indication IP channel information is such as IP address and IP interface.To be described in detail this field to Figure 29 with reference to Figure 27 afterwards.

The structure of " IP_address_table " field when Figure 27 A illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 1 ".

" IP_version " field indication IP version 4 or IP version 6, but the invention is not restricted to this.That is to say that other version can be retained.

In RFC 791 and RFC 2460, IPv4_address and IPv6_address are described in detail.In addition, at RFC 793 that is used for TCP and the RFC 768 that is used for UDP Port_number has been carried out more detailed description.

Figure 27 B illustrates the structure of " IP_address_table " field when the value of " tag " field shown in Figure 26 is set to " 1 " according to another embodiment of the present invention.

" IP_address_table " field shown in Figure 27 B identical with shown in Figure 27 A is except " Port_number_usage_flag " field.

" Port_number_usage_flag " field indicates whether to exist port number.In current embodiment, in " IP_address_table " field, indicate whether to exist port number.

The structure of " MAC_address_table " field when Figure 28 illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 2 ".

In RFC 1042, describe MAC_address in detail.

The structure of " Text_description_table " field when Figure 29 illustrates the value when " tag " field shown in Figure 26 according to the embodiment of the invention and is set to " 3 ".

" Text_description_table " field provides the textual description about the IP channel.

" ISO_639_language_code " field indication text message is subsequently discerned by ISO 639 language codes.In current embodiment, " description " field comprises text message.

" description " field provides the textual description of IP channel.With IOS 8859-1 character textual description is encoded.

Now the multiplexing structure to the MCAST system is described.

Transmission frame comprises a plurality of turbo channels, and each turbo channel comprises a plurality of subchannels.In addition, each subchannel can comprise sub-data channel.Send the data of same type by subchannel.Sub-data channel can be service itself or service component.

Can be to various types of data or only carry out multiplexing and send by MCAST to the data of particular type.The example of the previous case can be carried out multiplexing and transmission to signaling data, real-time media data, IP data and object data.The example of latter event only can send signaling data and IP data.In the later case, can by with the difference of the IP compression type sub-data channel of classifying.

Send signaling data by 168 or 188 (or 187) byte MCAST transmission package.The length of transmission package is variable.LMT specifies the position and the quantity of all sub-data channels.In addition, LMT can specify the position of the data that are mapped to sub-data channel or the position of the stream of the IP in the turbo channel.

LMT subsequently can be present in the transmission package in the turbo data channel, or periodically or aperiodicity ground be present in the bag of ad-hoc location.For example, LMT can be present in the first signaling sub-data channel or in the MCAST packet header.In addition, LMT can be present in each frame, but fixedly the time, can not send LMT when the position of service component in frame.

LIT comprises service configuration information, and each sub-data channel number and identifier.

Conventional broadcast system is by the program of PID filtered search expectation, and the MCAST system can by via LMT and/or LIT based on frame by frame the definite position of the data that constitute each service being detected directly to the user provides the service of expectation, and do not carry out filtration.

Figure 30 A illustrates the MCAST multiplexing structure according to the embodiment of the invention.

At length, Figure 30 A illustrates signaling data, implementation data, IP data and object data is carried out multiplexing situation.Frame is divided into service access zone that is used for access services (for example, LMT or LIT) and the data area that is used for transfer of data.MCAST transmission frame according to the embodiment of the invention can be sent out when being inserted into the transmission frame of another broadcast system, can be sent separately, or is sent out in the transmission frame that is mapped to another broadcast system one to one.In current embodiment, send the MCAST transmission frame by the ATSC transmission frame.

As mentioned above, according to data type the MCAST transmission frame is divided into subchannel.Subchannel is the channel of dividing once more by the turbo channel that sends data flow according to the data type physical division.In Figure 30 A, subchannel is divided into the subchannel that is used for the real time data type once more, be used for the subchannel of IP data type and be used for the subchannel of object data type.

Subchannel can be divided into independent sub-data channel.Sub-data channel comprises the transmission package more than.Sub-data channel is made of one group of 188 byte (or 168 bytes) the MCAST transmission package in the ATSC frame.Bag length can be variable.

Figure 30 B illustrates MCAST multiplexing structure according to another embodiment of the present invention.

Particularly, Figure 30 B only illustrates signaling data and IP data is carried out multiplexing situation.When LMT information is included in SIC or IP data type subchannel, can send described LMT information.

Figure 31 A illustrates MCAST frame structure and the LMT according to the embodiment of the invention.

Figure 31 A illustrates in greater detail the subchannel shown in Figure 30 A.With reference to Figure 31 A, the MCAST transmission frame is made of signaling subchannel, real-time media subchannel, IP subchannel and object subchannel.That is to say, send at least a in three types of data by the MCAST transmission frame, such as, real-time media data, IP data and object data.

Each subchannel comprises sub-data channel.

The real-time media subchannel sends the real-time media data such as A/V stream.In current embodiment, the real-time media subchannel is made up of sub-data channel 1 (R-1) and sub-data channel 2 (R-2).In current embodiment, the IP subchannel sends the IP data, and comprises sub-data channel (IP-1).The object subchannel sends and uses or receive and be stored in the object data that uses afterwards in the broadcast service receiving equipment in real time.In current embodiment, the object subchannel comprises sub-data channel 1 (O-1), sub-data channel 2 (O-2), sub-data channel 3 (O-3) and sub-data channel 4 (O-4).

A service comprises more than a service component.Therefore, must receive all service component of service so that service to be provided.Sub-data channel is the path that only sends a service component by it.Therefore, in order to visit a service, must know the position of all sub-data channels that send service component respectively.

Be used to visit the service component of the service of formation service access information (such as, LMT or LIT) be included in the head part of transmission package.Transmission package can comprise at least one in " head " field, " LMT " field, " LIT " field and the payload.

The LMT field provides the structure and the physical location information of sub-data channel, and this will be described in more detail with reference to Figure 34 afterwards.

Figure 31 B illustrates MCAST frame structure and LMT according to another embodiment of the present invention.

With reference to Figure 31 B, only send the IP data by the MCAST frame, comprise that VMI information is with the recognin data channel.

The position of detecting the sub-data channel in the MCAST frame is very important, and this information is included among the above-mentioned LMT.Skew in the use frame detects the position of sub-data channel.Yet, when sub-data channel changes, for example when adding or cancel sub-data channel, need this change of identification.If sub-data channel can be discerned (VMI) identification by virtual map, then can easily check the change in the sub-data channel.To be described in detail VMI by reference Figure 32 afterwards.

Figure 32 illustrates the method for passing through to use the change in virtual map identification (VMI) the inspection sub-data channel according to the embodiment of the invention.

Be included in the signaling information such as LMT, LIT or IMT according to the VMI of the embodiment of the invention.VMI is the identifier of recognin data channel.By using VMI can determine whether sub-data channel changes.

With reference to Figure 32, in former frame, the sub-data channel that constitutes service 1 is audio frequency 1, video 1 and image 1. Value 1,3 and 5 is assigned to these sub-data channels respectively as the VMI value.

In subsequent frame, the sub-data channel that cancellation is relevant with image 1.If only specify the position of sub-data channel,, be irrational then so will be offset as identifier because the skew of sub-data channel is different based on frame with the skew in the frame.Yet if VMI is assigned to sub-data channel respectively as unique identifier, the sub-data channel that changes can be discerned exactly.

Figure 33 is the flow chart that passes through to use VMI acquisition service method that illustrates according to the embodiment of the invention.

At operation S3310, obtain LMT and/or LIT.

At operation S3320, the VMI that sends the sub-data channel of the service component of forming requested service is examined.

At operation S3330, obtain IMT.

At operation S3340, check the VMI in the current turbo channel.

At operation S3350, the sub-data channel of expecting by visit obtains data.

Figure 34 A illustrates the structure according to the LMT of the embodiment of the invention.

LMT according to the embodiment of the invention comprises " type bitmap " field, " version number " field and at least one " sub data channel number " field.

The type of the data that comprise in the MCAST transmission frame that the indication of " type bitmap " field sends at the fixed time at interval.Suppose to send object data, real-time media data and IP data by the MCAST transmission frame.

" type bitmap " field comprises three positions, and each can indicate whether to exist the type of data.For example, suppose whether first indication exists the real-time media data in frame, whether second indication exists the IP data in frame, and whether the 3rd indication exists object data in frame, existence is the corresponding data of situation of " 1 " with place value.Therefore,, then mean to have all types of data,, then mean to have IP data and object data if the value of " type bitmap " field is " 011 " if the value of " type bitmap " field is " 111 ".

The version of " version number " field indication LMT.

" sub data channel number " field is indicated the sum of the sub-data channel of the data that are used for every type." channel pointer " field total corresponding of the value of this field and the physical address of indication sub-data channel.

With reference to Figure 34 A,, therefore there is the sub-data channel that sends the real-time media data owing to exist and corresponding " channel pointer " field of real-time media data.

The physical location of each " channel pointer " field indication sub-data channel.The index number can be by continuous dispensing to " channel pointer " field.By number be called as " the LMT index number " of continuous dispensing " channel pointer " field in the LMT.LMT index number can be not included in " channel pointer " field, but is arrived " channelpointer " field by continuous dispensing when apparatus for receiving broadcasting is explained " LMT " field.Distribute LMT index number with channel index with reference to the subchannel of forming each service among the LIT.

Figure 34 B is shown specifically the structure according to the LMT of Figure 34 A of the embodiment of the invention.

If suppose that the value of " type bitmap " field is " 011 ", the value that then is used for " sub datachannel number " field of IP data is " 2 ", the value of " sub data channel number " field is " 3 ", " channel pointer " field 1 and 2 indications are used for the position of the sub-data channel of IP data, and 3 to 5 indications of " channelpointer " field are used for the position of the sub-data channel of IP data.If LMT index number is arrived these " channel pointer " fields by continuous dispensing, then 1 to 5 LMT index number is assigned to " channel pointer " field 1 to 5 respectively.

Figure 35 A and Figure 35 B illustrate the structure according to the LMT of the embodiment of the invention.

" tag " field indicates whether and will comprise LMT information.In current embodiment, LMT information is by in actual being included in " LMT_information " field.

" length " field comprises the length of eight positions and indication " LMT_information " field.

" LMT_information " field is specified the position of the sub-data channel in the subchannel and the signaling data (SD) in the signaling subchannel.To be described " LMT_information " field with reference to Figure 36 C afterwards.

Figure 36 illustrates the structure according to " LMT_information " field shown in Figure 35 of the embodiment of the invention.

The quantity of the LMT subsequently that the indication of " LMT_coverage " field is identical with current LMT.For example, if the value of " version_number " field that will describe afterwards is " 1 ", the value of " LMT_coverage " field is " 001 ", means that then having version is the LMT of " 1 ".Similarly, if LMT and current LMT are inequality subsequently, then the value of this field is set to " 0 ".

The version that " version_number " field comprises four positions and indicates LMT.When relating to the field change of LMT, then version number increases by 1 mould 16.

" LMT boundary " field is indicated the position of the bag that is covered by current LMT.If " LMT_boundary " field can be represented the bag that covered by current LMT, then its value is not limited.For example, the value of this field can be indicated the skew or the sum of the bag that is covered by current LMT.

" SD_end_offset " field is 8 bit fields, the end position of indication signaling subchannel.If do not comprise signaling data in the signaling subchannel, then the value of this field should be set to " 0 ".

The quantity of " number_of_IP " field indication IP sub-data channel.

" IP_end_offset " field is 8 bit fields, the end position of the IP sub-data channel in the indication IP subchannel.If do not comprise the IP data in an IP sub-data channel, then the value of this field should be set to " 0 ".

Figure 37 A and Figure 37 B illustrate the structure of LMT and " LMT_information " field according to another embodiment of the present invention.

With reference to Figure 37 A, the end offset information of LMT indication sub-data channel.Sub-data channel sends four types data respectively: signaling data, real-time media data, IP data and object data, use and finish to be offset the position of expressing according to the sub-data channel of type.

The initial value of each sub-data channel is " 1 " always, according to the subdata type independent allocation arrived sub-data channel.Yet, if there is no first sub-data channel, the value of " next_indicator () " field is set to " 0 ".

If there is not effective packet in one or more parcels temporarily, the skew of then corresponding sub-data channel is identical with last bag.The skew of first sub-data channel is set to " 0 ".

With reference to Figure 37 B each field is defined.

" SEP_flag " field indicates whether to exist signal wrapper (SEP).

" SEP_end_offset " field is 8 bit fields, the end position of indication SEP sub-data channel when " SEP_flag " field is " 1 ".

First " next_indicator " channel indicates whether also to exist " real_time_end_offset " field.If the value of this field is " 0 ", then no longer there is " real_time_end_offset " field, if the value of this field is " 1 ", then mean also to have " real_time_end_offset " field.

" real_time_end_offset " field is 7 bit fields, and indication sends the end position of the real-time sub-data channel of real-time media data.If current MCAST parcel does not have real time data, then the value of this field should be set to " 0 ", or this field does not exist.

Second " next_indicator " channel indicates whether also to exist another " IP_end_offset " field.If the value of this field is " 0 ", then current " IP_end_offset " field is last, if the value of this field is " 1 ", then means to have another " IP_end_offset " field.

" IP_end_offset " field is 7 bit fields, and indication sends the end position of the IP sub-data channel of IP data.If there is not the IP sub-data channel in current MCAST parcel, then the value of this field should be set to " 0 ", or this field does not exist.

The 3rd " next_indicator " channel indicates whether also to exist another " object_end_offset " field.If the value of this field is " 0 ", then current " object_end_offset " field is last, if the value of this field is " 1 ", then has another " object_end_offset " field.

" object_end_offset " field is 7 bit fields, and indication sends the end position of the object sub-data channel of object data.If there is not the object sub-data channel in current MCAST parcel, then the value of this field should be set to " 0 ", or this field does not exist.

Figure 38 illustrates the structure of LMT according to another embodiment of the present invention.

The quantity of the follow-up LMT that the indication of " LMT_coverage " field is identical with current LMT.If follow-up LMT and current LMT are inequality, then the value of this field is set to " 0 ".

" version_number " field is two bit fields, the version of indication LMT.In the field that relates to LMT one when changing, version number increases by 1 mould 4.

The type of the sub-data channel that " selector_bits (SEP keeps, IP) " field indication exists.In Figure 38, owing to suppose only to send the IP data by the MCAST frame, so second is to keep the position.If first is " 1 ", then mean to have the SEP sub-data channel, if the 3rd is " 1 ", then mean to have the IP sub-data channel.

The length of " LMT_length " field indication LMT field.

" LMT_boundary " field is indicated the quantity of the skew of the bag that is covered by current LMT.

" number of SEP " field is the eight bit word section, the sum of indication SEP sub-data channel.

The identifier of " VMI " field indication sub-data channel, it is unique in the turbo channel.

" SEP_end_offset " field is 8 bit fields, the end position of indication SEP subchannel.

The quantity of " num_of_IP " field indication IP sub-data channel.

" IP_end_offset " field is 8 bit fields, the end position of indication IP sub-data channel.By being counted, bag calculates " SEP_end_offset " field and " IP_end_offset " field based on the bag that comprises LMT.In another embodiment of the present invention, can calculate skew with byte.

Figure 39 illustrates according to the MCAST frame of the embodiment of the invention and the structure of LIT.

LIT can be positioned on the signaling subchannel, and this signaling subchannel at first is arranged in the turbo channel of the data that comprise the ATSC frame.Each service comprises one or more service component, the tabulation of LIT indication service component.That is to say, but LIT specified services component information.Detect the position of sub-data channel from above-mentioned LMT.

LIT and LMT are closely related and can exist in each frame.

Figure 40 illustrates the structure according to the LIT of the embodiment of the invention.

The indication of " service_number " field is according to the quantity that is included in the service in the MCAST frame of the present invention.

The version of " version_number " field indication LIT.

Each service field comprises " service identifier " field and at least one " LMT indexnumber " field." LMT index number " field is assigned to the field as Figure 34 B described " channelpointer ".Therefore, apparatus for receiving broadcasting can detect the physical address of the sub-data channel that is used for the service that transmission frame expects by explaining LIT.

Figure 41 A and Figure 41 B illustrate the structure of LIT according to another embodiment of the present invention.

When a plurality of sub-data channels form a service, the structure of LIT specified services.Can determine the position of sub-data channel by the offset information that is included in the sub-data channel among the LMT.That is to say, can discern each component by the summary counter of each sub-data channel.

" num_of_service " field is 6 bit fields, the quantity of the available service in the indication present frame.

" version_number " field is 10 bit fields, and indication relates to the version number of the field of LIT.In the field that relates to LIT one when changing, version number should increase by 1.

" service_ID " field is 8 bit fields, the service in the sign turbo channel.

" next_indicator " field is 1 bit field, indicates whether to exist additional " next_indicator " field and " LMT_index_number " field.If the value of this field is " 1 ", then mean and have additional " next_indicator " field and " LMT_index_number " field, if the value of this field is " 0 ", then no longer there are " next_indicator " field and " LMT_index_number " field.

" type_info " field indication is by the type of the digital data channel of " LMT_index_number " field indication, according to the value of this field as giving a definition:

[table 8]

Value	Describe
		00	Keep
01	Real time data
		10	The IP data
11	Object data

" LMT_index_number " field is 7 bit fields, indicates the array index of each LMT.The value of this field independently increases according to " type_info " field.That is to say that with reference to Figure 40, LMT index number continues to increase, regardless of the type of sub-data channel.Yet with reference to Figure 41, the several types according to sub-data channel of LMT index independently increase.

For example, suppose to be present in the MCAST frame with corresponding two channel index of IP sub-data channel with corresponding three channel index of object sub-data channel.In this case, with reference to Figure 40,1 to 5 LMT index number is arrived channel index by continuous dispensing, thereby 3 to 5 LMT index number is assigned to respectively and the corresponding channel index of object sub-data channel.Yet with reference to Figure 41, the several types according to sub-data channel of LMT index independently increase, thereby 1 to 3 LMT index number is assigned to respectively and the corresponding channel index of object sub-data channel.

Figure 42 A illustrates the flow chart that use LMT and LIT according to the embodiment of the invention provide service method.

With reference to Figure 42 A, the LMT field is sent and is positioned the presumptive area of MCAST frame with fixed intervals.At operation S4201, when receiving transmission frame, the broadcast service receiving equipment obtains and explains the signaling packet that comprises service access information, and this signaling packet is positioned the presumptive area of transmission frame.

At operation S4203, the broadcast service receiving equipment determines whether the LMT field is present in the signaling packet.If S4203 determines not have the LMT field to be present in the signaling packet in operation, then whether the LMT field before operation S4205 determines has been stored in the broadcast service receiving equipment.If the LMT field before operation S4205 determines is present in the broadcast service receiving equipment, then method proceeds to operation S4211.

If S4203 determines not have the LMT field to be present in the signaling packet in operation, then at operation S4207, the broadcast service receiving equipment determines by the version information that use is included in the LMT field whether the version of LMT field is updated.If determine at operation S4207 whether the version of LMT field is updated, then explain the LMT field at operation S4209.By explaining the LMT field, obtain information about sub-data channel at operation S4209.

At operation S4211, the broadcast service receiving equipment determines whether the LIT field is present in the signaling packet.If S4211 determines not exist the LIT field in operation, then whether the LIT field before operation S4213 determines is present in the broadcast service receiving equipment.The LMT field before if operation S4213 determines to exist, then method proceeds to operation S4219.

If determine that at operation S4211 the LIT field is present in the signaling packet, then whether the version of determining the LIT field at operation S4215.By explaining the LIT field, obtain link information, just service configuration information at operation S4217 about each service.

At operation S4219, obtain service from the result of the explanation of LMT field and LIT field, handle then.

Figure 42 B illustrates the flow chart that uses LMT and LIT that service method is provided according to another embodiment of the present invention.

With reference to Figure 42 B, LMT comprises " LMT_coverage ", therefore, even when because mistake or periodically do not insert LMT and can not receive the bag that comprises LMT the time, also can detect the position of follow-up LMT.Therefore, the position of LMT and LMT are inserted into the cyclomorphosis of transmissions field.The operation by the label indication identical with label among Figure 42 A among Figure 42 B is identical with the operation among Figure 42 A, and therefore omission is described in greater detail.

With reference to Figure 42 B,, extract LMT from the MCAST frame according to the LMT pointer information that extracts from before LMT at operation S4220.The LMT pointer information is pointed out the position of follow-up LMT.Therefore, even when LMT being inserted into the presumptive area failure of transmission frame, also can easily extract LMT from transmission frame.

At operation S4203, determine whether the LMT field is present in the position of being indicated by the LMT pointer information.If S4203 determines to exist the LMT field in operation, then method proceeds to operation S4207.If S4203 determines not exist the LMT field in operation, then method proceeds to operation S4230.In position, do not exist the indication of LMT field to omit the situation of LMT field and in the LMT field, produce the situation of mistake by LMT pointer information indication.

At operation S4230, determine based on the information in the LMT field before being included in whether LMT field before is available about the sum of the identical LMT of version.LMT field before can with the fact mean that it can be used continuously.If the LMT field before operation S730 determines can be used, then method proceeds to operation S4211.

Now the structure according to the transmission information of data type is described.

At first, under the situation of rich service in real time, must obtain and the PSI of decoding MPEG-2 and ATSC, with to the multimedia in the broadcast system substantially stream decode.Subsequently, decoder must be waited for the frame that reception will at first be decoded.Subsequently, but user's browsing video.In MCAST, important decoded information is encoded as and is included in the information descriptor of each multimedia in flowing substantially.

In this case, can send decoder configurations information (DCI) and multi-medium data simultaneously for aforesaid high speed access.That is to say that DCI is inserted in the I frame and is sent out subsequently.Below DCI is described with reference to Fig. 4.

Figure 43 illustrates the structure according to the object transmission information of the embodiment of the invention.

With reference to Figure 43, " Object_Delivery_information " field comprises the signaling information that is used to send object." Object_Delivery_information " field comprises the validity date of object, the parameter that is used for AL-FEC and additional descriptor.The catalogue component is object or other catalogue.

Can send " Object_Delivery_information " field by signaling wrapper (SEP).

Whether " directory information flag " field indication catalogue exists.

Can express object information with tree directory.If the value of " directory_information_flag " field is " 1 ", then be interpreted as existing catalogue.

The indication of " number_of_objects " field is by the sum of the object of " Object_Delivery_information " field transmission.

The sum of " number_of_directory " field indication directory information.In current embodiment, " directory_information " field comprises directory information.

" directory_information " field comprises directory information, will be described in greater detail with reference to Figure 44 afterwards.

The identifier of " object_id " field denoted object.

Whether " expire_time_flag " field denoted object has effective time.

The indication of " LMT_index_number " field is according to the index number of the sub-data channel of data type classification.

When sending object in identical sub-data channel, " object_extension_id " field is as the attach identifier of a plurality of objects.

" AL-FEC_mode " field indication AL-FEC pattern.Example according to the AL-FEC pattern of the value of this field is as follows:

[table 9]

Value	Pattern
			0	MCAST?AL?FEC
1-15	Keep

" total_length " field is with the length of byte denoted object.

" time_table " field comprises the temporal information that does not allow to use them after the expired time of object.To be described in detail this field with reference to Figure 45 afterwards.

The coding mode that " encoding_mode " field indication AL-FEC uses.Example according to the coding mode of the value of this field is as follows:

[table 10]

Value	Describe (n, k)
		0	(2880，2304)
1	(1920，1536)
		2	(960，768)
3-15	Keep

Filling length in the opisthogenesis piece of " padding_length " field denoted object.

The indication of " number_of_descriptors " field is the quantity of " descriptor " field continuously.

The data type of " tag " field denoted object.In current embodiment, this field indication is included in the data type in " descriptor " field.Example according to the data type of the value of this field is as follows:

[table 11]

Value	Describe (n, k)
		0	Forbid
1	Content_name_description
		2	Mime_type_description
3-15	Keep

" length " field is with the length of byte indication " descriptor " field.

The indication of " descriptor " field is according to the descriptor of the value of " tag " field.Will be afterwards " descriptor " field according to the value of " tag " field be described with reference to Figure 46 and Figure 47.

Figure 44 illustrates the structure according to " directory_information " field shown in Figure 43 of the embodiment of the invention.

The quantity of " number_of_directory " field indication catalogue.

The identifier of " directory_id " field indication catalogue.

" directory_name_length " field is with the length of byte indication directory name.

The indication of " directory_name " field is with the character-coded directory name of ISO 8859-1.

The indication of " number_of_components " field is included in the quantity of the component in each catalogue.

The identifier of " object_id, directory_id " field denoted object or other catalogue.

Figure 45 illustrates the structure according to " time_table " field shown in Figure 43 of the embodiment of the invention.

" years " field indication year.Can express since particular point in time through how long.For example,

Figure 45 illustrates the structure according to " time_table " field shown in Figure 43 of the embodiment of the invention.

" years " field indication year.Can express since particular point in time through how long.For example, if 1970 be that the value of reference year and this field is " 0 ", then mean 1970.

In from January to December one month of " months " field indication.

" days " field indication date.

" hours " field indication was from one hour to the twenty four hours one hour.

" minutes " field is indicated minute from a minute to 60 minutes.

The structure of " content_name_descriptor " field when Figure 46 illustrates the value when " tag " field shown in Figure 43 according to the embodiment of the invention and is set to " 1 ".

" content_name_length " field is with the length of byte instruction content name.

The indication of " content_name " field is with the character-coded content name of ISO 8859-1.

The structure of " mime_type_description " field when Figure 47 illustrates the value when " tag " field shown in Figure 43 according to the embodiment of the invention and is set to " 2 ".

" mime_type_length " field is with the length of byte indication mime type.Do (" mime " represent multi purpose internet mail extensions?)

" mime_type " field indication mime type.This field is set to the character (more details are seen RFC 2045, RFC 2046 and http://www.iana.org/assignments/media-typs) at the coding of any medium type of IANA registration.

Figure 48 illustrates according to the wrapper in the MCAST system of the embodiment of the invention and the relation between the transmission package.

In the MCAST system, transport layer is divided into encapsulated layer and packing layer.Encapsulated layer is responsible for the segmentation of application data, and transport layer is divided into the MCAST transmission package with wrapper.

More specifically, encapsulated layer will adapt to all types of application data encapsulation of A-VSB transmission method.That is to say that the wrapper with structure of the application data of being adapted to is created as the form that is fit to application data.Application data comprises real-time media data, IP data, object data and signaling data.Wrapper has the ad hoc structure according to application type.

The packing layer will be divided at least one transmission package from the wrapper that encapsulated layer produces.Can differently determine the size of transmission package, for example, 168 bytes or 188 bytes.

Send the payload of MCAST bag serially.That is to say that a part of wrapper or all two or more wrappers can be included in the MCAST bag.According to the present invention, use " first_last " field and " pointer_field " field when preserving the position, to indicate this situation.

[table 12]

Whether " pointer_field " field indication MCAST transmission package comprises two or more wrappers.If the value of this field is " 1 ", mean that then two or more wrappers are present in the MCAST transmission package.In current embodiment, the value of this field is " 1 ", thereby two or more wrappers are included in the MCAST transmission package.

Whether the beginning and the end of " first_last " field indication wrapper are included in the MCAST transmission package.For convenience of explanation, Qian Bao and Hou Bao are called first wrapper and second wrapper from two or more continuous wrappers.If two or more wrappers are included in the MCAST transmission package, then the end of first wrapper and second wrapper begin should be included in the MCAST transmission package.

Whether the beginning of first indication first wrapper of " first_last " field is included in the MCAST transmission package, and whether the end of second indication second wrapper of " first_last " field is included in the MCAST transmission package.For example, if the value of this field is " 10 ", then the beginning of first wrapper and end all are included in the MCAST transmission package, only second wrapper begin be included in the MCAST transmission package.

Figure 49 illustrates wrapper according to the embodiment of the invention to Figure 55.

Figure 49 A and Figure 49 B illustrate the structure according to the wrapper that is used for signaling of the embodiment of the invention.

Bag shown in Figure 49 A comprises 4 byte-header and payload.Payload can comprise the description or the metadata of application, such as ESG and electronic program guides (EPG).In addition, payload comprises optional data, such as the metadata information of IP map information table and object.

" first_last " field is 2 bit fields, and the indication wrapper is first or last.Can this field be defined according to the value of this field, as shown in table 5.

" compression_flag " field is 1 bit field, and the indication payload data is compression or unpressed.If the value of this field is " 1 ", mean that then payload data compresses.

The type of " signal_type " field indication payload data.According to the type of the payload data of this field shown in table 13 or the table 14:

[table 13]

Value	Describe
		0	Forbid
1	[TBD]
		2	Object_Delivery_Information
3-31	Keep

[table 14]

Value	Describe
		0	Forbid
1	IP_mapping_Table
		2-31	Keep

" sequence_number " field is 8 bit fields, the value that indication increases in the wrapper of same data type.If this field reaches maximum, then its value is returned " 0 "." sequence_number " field is used for object segment identifier during re-transmission is defeated.

" version_number " field is 4 bit fields, the version number of indication signaling wrapper (SEP).When encapsulation payload version changed, this version number increased by 1.

" packet_length " field is with the length of the payload in the byte indication bag.

" data_byte " field is 8 bit fields.The type of the data that send by payload depends on the value of " signal_type " field.

Figure 50 A and Figure 50 B illustrate the structure according to the wrapper that is used for real time data of the embodiment of the invention.

Bag shown in Figure 50 is the wrapper that is used for the real time data type, comprises head, added field and payload.

" first_last " field is 2 bit fields, and the indication wrapper is first or last.Can this field be defined according to the value of this field, as shown in table 5.

" RT_type " field is 6 bit fields, and indication is by the type of the data of payload transmission.Example according to the data type of the value of this field is as follows:

[table 15]

Value	Describe
		0	Audio frequency
1	Video
		3-63	Keep

Whether " DCI_flag " field instruction decoding device configuration information (DCI) is present in the head of wrapper.In current embodiment, " DCI_field " field comprises DCI.

The version of " DC_version " field indication DCI.The value of this field closely be relevant to transmission package DC field (or DCI_field) value and should be set to equate with the value of the DC field (or DCI_field) of transmission package.

Whether " addition_flag " field indication additional information is present in the head of wrapper.In current embodiment, " addition_flag " field comprises additional information.

" DCI_length " field is with the length of " DCIfield " field in the byte indication packet header.

" DCI_field " field indication DCI.Below " DCI_field " field (or " Decoder_Configuration_Information " field) is described with reference to Fig. 4.

" packet_length " field is with the length of byte indication according to the payload of the bag of " packet_length " field.

Whether the indication of " PTS_flag " field exists PTS information in the head of wrapper.In current embodiment, " PTS " field comprises PTS information.

Whether the indication of " DTS_flag " field exists DTS information in the head of wrapper.In current embodiment, " DTS " field comprises DTS information.

Whether the indication of " padding_flag " field exists byte of padding in the head of wrapper.

The scrambling mode of " scrambling_control " field signal transmission wrapper payload.

" PTS " field is 33 bit fields, and the reproduction time that indication defines in ISO/IEC 13818-1 stabs (PTS).

" DTS " field is 33 bit fields, the decoded time stamp (DTS) that indication defines in ISO/IEC 13818-1.

" padding_length " field is with the length of the padding data in the byte indication bag.In current embodiment, " padding_byte " field comprises padding data.

" padding_byte " field has 8 place values that equate with " 0xFF " and can be inserted by encoder.The decoded device of this field abandons.

" data_byte " field comprises 8.

Figure 51 illustrates the grammer of the wrapper that is used for real time data according to another embodiment of the present invention.This field in the wrapper shown in Figure 51 is with shown in Figure 50 identical.

Figure 52 A and Figure 52 B illustrate the grammer according to the wrapper that is used for the IP data of the embodiment of the invention.

Bag shown in Figure 52 is used to send IP datagram.IP datagram can be divided into a plurality of wrappers and be sent out subsequently.Need whether the current bag of expression is last bag, can use " first_last " field that will be described later in this case.Perhaps, if the value of " first_last " field is set to " 0x01 " or " 0x03 ", can determine that then the current IP wrapper is last.

If the purpose wrapper is first, then a field to comprise this wrapper of indication be the information that whether exists of first bag or the information of last bag, indication additional information, about the information of the form that is included in the IP data in the payload area with about the information of the length of wrapper.

If the purpose wrapper is not first bag, then a field comprises that this wrapper of indication is first bag or the information of last bag, sequence number information and about the information of the length of wrapper.

Additional header fields comprises information that whether indication additional information subsequently exist, about the information of the type of additional information, about the information and the additional information of the length of additional information.

" first_last " field is 2 bit fields, and indicating current bag is first or last.Can this field be defined according to the value of this field, as shown in table 5.

" addition_flag " field is 1 bit field, and whether the indication additional information exists.In current embodiment, " addition_data " field comprises additional information.If the value of this field is " 1 ", then is construed as and has " addition_data " field.

" IP_type " field is 5 bit fields, and indication is by the type of the data of IP payload transmission.For example, this field can be used for distinguishing IPv4 and IPv6.

" sequence_number " field is formed by 4, and increases by 1 in the wrapper of same data type.If this field reaches maximum, then its value is returned " 0 ".This field is used for IP segment identifier during re-transmission is defeated.

" encapsulation_packet_length " field comprises 12, and indicates the length of payload with byte.

" continuity_flag " field comprises one, and indicates whether and will follow " { tag, length, additional_data} " field.If the value of this field is " 0 ", then can be regarded as current field is the last field that comprises additional information.

" tag " field is 7 bit fields, the type of indication " additional_data " field.This field is as the container of the various types of information that can comprise the other needs of transmission of IP data institute.The type of the information that needs in addition is unrestricted.

" length " field is with the length of byte indication " additional_data " field.

The length of " additional_data " field can differently be determined." additional_data " field comprises the information according to " tag " field.

" payload " field can differently be determined, and comprised the IP packet that defines as in " IP_type " field.

Figure 53 illustrates the grammer of the wrapper that is used for the IP data according to another embodiment of the present invention.

Bag shown in Figure 53 is identical with the bag shown in Figure 52, except head is changed.

Figure 54 A and Figure 54 B illustrate the structure according to the bag that is used for object data of the embodiment of the invention.

Bag shown in Figure 54 A is the wrapper that is used to send the object data type.This bag comprises a plurality of transmission package that send the object data type by it.This bag is divided into head, additional information and payload.Additional header fields comprises the additional information about payload.

Send object data according to two kinds of methods that will be described in detail with reference to Figure 56 afterwards by the object sub-data channel.

If wrapper is first bag, then a field to comprise this bag of indication be the information that whether exists of first bag or the information of last bag, indication additional information, the identifying information of the object data that transmits by payload field, about the information of the type of object data with about the information of the length of bag.

If wrapper is not first bag, then a field comprises that this bag of indication is first bag or the information of last bag, the information that indicates whether to exist additional information, sequence number information and about the information of the length of bag.

Additional header fields comprises the information that indicates whether to exist follow-up additional information, about the information of the type of additional information, about the information and the additional information of the length of additional information.

It is beginning wrapper or end wrapper that " first_last " field is indicated current bag.Can this field be defined according to the value of this field, as shown in table 5.

Whether the indication of " addition_flag " field exists additional information in the head of wrapper.In current embodiment, " addition_data " field comprises additional information.

" object_ID " field is used to discern all objects that transmit by identical sub-data channel.

The type of " object_type " field appointed object data, for example, jpeg (compression or not compression), text (compression or not compression) or mp3.

" sequence_number " field indication clip information.

The length of " packet_length " field indication data subsequently.

" continuity_flag " field indicates whether and will follow " additional_data " field.If the value of this mark is set to " 1 ", then mean and will follow " additional_data " field, if the value of this field is set to " 0 ", mean that then current " additional_data " field is last field.

The type of " tag " field denoted object decoder customizing messages.This field is illustrated in the segmentation of the type of the object data of appointment in " object_type " field.For example, if " object_type " field indication text (compression) then can segment data type according to compression method.In this case, data type can be expressed as " GZIP compressed text " by " tag " field.

" length " field is with the length of byte statement " additional_field_data " field.

" additional_field_data " field comprises the object decoder customizing messages.

" payload " field comprises object data.

Figure 55 A and Figure 55 B illustrate the structure of the bag that is used for object data according to another embodiment of the present invention.

" first_last " field is 2 bit fields, and indicating current bag is beginning wrapper or end wrapper.Definition according to this field of the value of this field is as shown in table 5.

" object_delivery_mode " field indication source block mode.If the value of this field is " 0 ", then can not use source piece number, if the value of this field is " 1 ", after then being preserved for.

" object_extention_id " field is as the attach identifier of a plurality of objects when sending object in identical sub-data channel.

" source_block_number_8 " field comprises 8, indication source piece number.Source piece under the current OEP of the value representation of this field number.

" source_block_number_16 " field comprises 16, indication source piece number.Source piece under the current OEP of the value representation of this field number.

The version number of " version " field denoted object data.When object data changed, version number increased by 1.Change in the object means that object is updated.For example, when title is added to mapped file, be changed as the object of mapped file.

The clip information of field source piece or object when the indication of " fragment_number " field surpasses the maximum length of wrapping when the length of field source piece or object.

" packet_length " field is long with byte indication bag.

Figure 56 illustrates the method according to the transmission object data of the embodiment of the invention.

Once transmit one or more object datas by a sub-data channel.The situation that transmits an object data by a sub-data channel is called the single object pattern, and the situation of crossing many object datas of a sub-data channel transmission is called the multi-object pattern.

In the multi-object pattern, identifier must be assigned to a series of object datas in sub-data channel respectively.Perhaps, many object datas that can use object ID identification to send by identical sub-data channel.Perhaps, when bag comprises when being used to send " additional_field " field of additional information (such as the characteristic information of object data), can be by a series of object datas in will " object_extention_id " field insertion " additional_field " field recognin data channel.

Figure 57 illustrates the application according to the AL-FEC of the embodiment of the invention.

OEP comprises head and payload, and comprises a plurality of transmission package.SEP provides application message and the special parameter of AL-FEC.Now AL-FEC layer and object are described with reference to Figure 57.

When using MCAST AL-FEC, object is the multiple source piece by burst.Each source piece comprises the bag with predetermined length.Determine the length and the quantity of bag by the MCASTAL-FEC coding mode.After carrying out MCAST AL-FEC coding, added redundancy packet.Can in the scope of redundancy packet, carry out error correction.

To be described the MCAST transmission package following.

Figure 58 A and Figure 58 B illustrate the header structure according to the transmission package and the transmission package of the embodiment of the invention.

With reference to Figure 58 A, comprise a basis field, PCR information field, pointer field, filling field, LMT field, LIT field and payload field according to the transmission package of the embodiment of the invention.

A basis field comprises that the indication transmission package is the beginning wrapper or the information of last wrapper, indicates whether to exist information, the indication DCI of PCR whether to be present in information in the field of wrapper, to indicate whether to exist the information of fill area, the information that indicates whether there is the information of LMT and indicate whether to exist LIT.To be described in detail these fields with reference to Figure 59 afterwards.

Figure 58 B illustrates the structure according to the filling field of the transmission package of the embodiment of the invention.

Can comprise according to the filling field of the transmission package of the embodiment of the invention and to fill length information and byte of padding.

LMT field in the transmission package and LIT field such as the above description of carrying out to Figure 41 with reference to Figure 34.

Figure 58 C and Figure 58 D illustrate the header structure according to the transmission package and the transmission package of the embodiment of the invention.

(for example, when only sending the IP data by the MCAST system) can use the bag shown in Figure 58 C and Figure 58 D when the data that only send one type.

Figure 59 A illustrates the grammer according to the transmission package of the embodiment of the invention.

" first_last " field indication transmission package is beginning wrapper or end wrapper.Definition according to this field of the value of this field is as shown in table 5.

Whether " DC_flag " field indication DCI is present in the head of wrapper.In current embodiment, " decoder_configuration_information " field comprises DCI.

Whether the indication of " pointer_flag " field exists " pointer_flag " field in the head of transmission package.

Whether the indication of " padding_flag " field exists " padding_flag " field in the head of transmission package.

Whether the indication of " LMT_flag " field exists " LMT_flag " field in the head of transmission package.

Whether the indication of " LIT_flag " field exists " LIT_flag " field in the head of transmission package.

Whether " PCR_flag " field indication transmission package comprises " PCR_flag " field.If the value of this field is " 1 ", then is interpreted as transmission package and comprises " PCR_flag " field.

The starting position of " pointer_field " field indication second payload when two wrappers are present in the transmission package.

" padding_length " field is with the filling size in the byte indication bag.

" padding_byte " field has 8 place values that equate with " 0xFF " that inserted by encoder.The decoded device of " padding_byte " field abandons.

Have the structure identical from " type_bitmap " field to " object_channel_pointer " field, therefore concise and to the point the description with the LMT shown in Figure 34.

The data type that the indication of " type_bitmap " field transmits by the MCAST transmission frame.Each position of this field has unique implication.There is real-time data channel in first indication of this field, and there is the IP data channel in second indication of this field, and there is the object data channel in the 3rd indication of this field.

The version number of " version_number " field indication LMT.As long as the LMT data change, then version number increases by 1.

The quantity of the sub-data channel in " real-time_channel_number " field indication real-time media type channels.

The quantity of the sub-data channel in " IP_channel_number " field indication IP type channels.

The quantity of the sub-data channel in " object_channel_number " field denoted object type channels.

The position of the sub-data channel of the real time data type in " real-time_channel_pointer " field designation data channel.

The position of the sub-data channel of the IP data type in " IP_channel_pointer " field designation data channel.

The position of the sub-data channel of the object data type in " object_channel_pointer " field designation data channel.

Have the structure identical from " service_number " field to " LMT_index_number " field, therefore concise and to the point the description with the LIT shown in Figure 40.

The quantity of the service that the indication of " service_number " field can be used in data channel.

The version number of " version_number " field indication LIT field.When signaling data changed, version number increased by 1.

Service in " service_ID " field indication turbo channel.ID has the unique value in the turbo channel.

" next_indicator " field indication subsequently " next_indicator " field and the existence of " LMT_index_number " field subsequently.For example, when the value of this field is " 0 ", mean that not more " next_indicator " field and " LMT_index_number " field exist.

The position of the sub-data channel among " LMT_index_number " field indication LMT.

The sequence number of the primary channel of indication of " index_number " field and service association.

" Program_clock_reference_base "/" Program_clock_reference_extension " field comprises 42 PCR that are divided into two parts and are encoded subsequently.First is 33 bit fields, and its value is the given basic value of identical equation that defines among 14 pages the 2-1 from MPEG-2 13818-1 standard.Second portion is 9 bit fields, and the identical equation that defines among 14 pages the 2-2 of its value from MPEG-2 13818-1 standard is given.

" data_byte " field comprises 8, and comprises the wrapper data.

Figure 59 B illustrates the structure of transmission package according to another embodiment of the present invention.

Identical in field in the transmission package shown in Figure 59 B and the transmission package shown in Figure 59 A.

Figure 59 C illustrates the structure of transmission package according to another embodiment of the present invention.

Identical in the field of the transmission package shown in Figure 59 C and the transmission package shown in Figure 59 A is except " Error_flag " field.

" Error_flag " field indicates whether there is mistake in the current bag.If the value of this field is " 1 ", then mistake is present in this bag when this bag is unpacked.

Figure 59 D illustrates the structure of transmission package according to another embodiment of the present invention.

Identical in the field of the transmission package shown in Figure 59 D and the transmission package shown in Figure 59 A.

Figure 60 A and Figure 60 B illustrate the structure of transmission package, basic head and added field according to another embodiment of the present invention.

Transmission package shown in Figure 60 A comprises a plurality of fields and payload field.Each field comprises basic header, indicates whether to exist the information of pointer, LMT information, additional information and payload.Transmit IP datagram and signaling packet by payload field.

At length, Figure 60 A illustrates the structure of transmission package according to another embodiment of the present invention.

" first_last " field is 2 bit fields, and the indication transmission package is beginning wrapper or end wrapper, as defined in Table 5.

Whether " signal_pkt_indicator " field indication payload data is signaling data.If the value of this field is " 1 ", be interpreted as that then the data that transmit by " payload " field are signaling datas.

Whether " error_indicator " field indication bag comprises mistake.

" addition_flag " field is 1 bit field, indicates whether to exist additional information.In current embodiment, " addition_flag " field comprises additional information.If the value of this field is " 1 ", then be interpreted as to have " addition_field " field.

Whether " compression_flag " field indication IP datagram is compressed.If the value of this field is " 1 ", mean that then the IP datagram that transmits by " payload " field is compressed.

" pointer_flag " field indicates whether to exist another IP datagram or signaling data.If the value of this field is " 1 ", then be interpreted as to have another IP datagram or signaling data.

" continuity_flag " field is 1 bit field, indicate whether to exist "＜tag〉＜length〉＜additional field data〉" field.That is to say, if "＜tag〉＜length〉＜additional field data〉" field is called " Add.Field " field, then can be regarded as and when the value of " continuity_flag " field is " 1 ", have " Add.Field " field, when the value of " continuity_flag " field is " 0 ", do not have " Add.Field " field.

The data type of " tag " Field Definition additional information is as follows:

[table 16]

Tag	Describe
		0	padding_field
1	LMT_field
		2	compression_parameter_field
3-127	Keep

The length of " length " field indication additional information subsequently.In current embodiment, " additional_field " field comprises additional information, thus the length of " length " field indication " additional_field " field.

" addition_field " field comprises additional information.

" pointer_field " field is 8 bit fields, indication when transmission package comprises two or more wrappers from the skew of first byte that begins second wrapper to the transmission package of transmission package.

" data_byte " field comprises IP datagram or signaling data.Data can be by burst.

The structure of " padding_field " field when Figure 61 A and Figure 61 B illustrate the value when " tag " field shown in Figure 60 according to the embodiment of the invention and be set to " 0 ".

The indication of " tag " field will be followed the filling field.

" length " field is 8 bit fields, and the length of field is filled in indication.In current embodiment, " padding_byte " field comprises padding data, thus the length of " length " field indication " padding_byte " field.

" padding_byte " field has 8 place values that equate with " 0xFF " and can be inserted by encoder.The decoded device of this field abandons.

Figure 62 illustrates when the value of " tag " field shown in Figure 60 is set to " 1 " structure according to " LMT_field " field of the embodiment of the invention.

The indication of " tag " field will be followed LMT information.In current embodiment, " LMT_information " field comprises LMT information.

" length " field is 8 bit fields, with the length of byte indication " LMT_information " field.

" LMT_information " field comprises the positional information of all the IP data in the IP sub-data channel and the positional information of all signaling datas in the signaling sub-data channel.Below to Figure 39 this field is described with reference to Figure 34.

The structure of " compression_field_parameter " field when Figure 63 illustrates the value when " tag " field shown in Figure 60 according to the embodiment of the invention and is set to " 2 ".

The indication of " tag " field will be followed the information about compression parameters.In current embodiment, " compression_parameter " field comprises the information about compression parameters.

" length " field is 8 bit fields, with the length of byte indication " compression_type " field and " compression_parameter " field.

" compression_type " field indication compression type.Additional information about compression type should be carried by " additional_field " field.Example according to the compression type of the value of " compression_type " field is as follows:

[table 17]

?compression_parameter	Describe
		?0	Do not compress
?1	ROHC
		?2-255	Keep

" compression_parameter " field comprises the parameter of the compression that relates to payload data.Change parameter according to compression type.

Figure 64 A and Figure 64 B illustrate the structure according to the signaling packet of the embodiment of the invention.

Payload by the MCAST transmission package carries signaling data.Signaling data comprises the additional information about IP datagram.The IMT information of carrying by signaling packet comprises the link information between IP stream and the IP sub-data channel.

The indication of " signal_type " field is by the type of the data of payload transmission, and is as follows:

[table 18]

Value	Describe
		0	Forbid
1	IP_mapping_table
		2-31	Keep

" version_number " field is 3 bit fields, the version number of indication signaling bag.When the signaling data that sends by payload changed, version number increased by 1.

" payload_length " field is 16 bit fields, the length of the signaling data of indicating subsequently/following.

" data_byte " field comprises the signaling data according to " signal_type " field.

Now the support OMA-BCAST according to the embodiment of the invention is described to the method for MCAST and the relation between OMA-BCAST and the MCAST.

The ATSC-M/H terminal is not only supported IPv6 but also is supported IPv4 to be used for general encapsulation and network packet transmission.The ATSC-M/H system also can use IPv6 and IPv4.Internet protocol allows each other abstractively and bearing bed and the management level logically distinguished.IP datagram is packaged in the MCAST transmission package.For the MCAST transmission, need the map information of IP datagram and turbo interchannel, can carry out this IP map addresses signaling by above-mentioned IMT.

Now linking between OMA-BCAST service and the MCAST is described.The most important factor of this link is the discovery of entrance of signaling, service guide and the discovery of transmission session.For this reason, IP stream and transmission channel must be linked and be signalled to another.In order to visit OMA-BCAST service, the entrance that must at first guarantee release of service information.Can be by transmitting release of service information more than a turbo channel.In MCAST, use the IMT that sends by SIC to send the positional information of turbo channel of the entrance of service.In addition, the IMT that comprises the positional information of the IP stream that is included in the turbo channel can be present in the precalculated position of each turbo channel.For convenience of explanation, the map information that sends by SIC is called " i-IMT ", and the map information in the turbo channel of transmission data is called " IMT ".

For OMA-BCAST is provided service guide, service guide announcement channel and service guide transfer channel are included in the turbo channel.Particularly, in the turbo channel one can transmit a plurality of information about the service fragment that is used for the service guide in all turbo channels (such as, set ESG).In addition, this channel can provide the release of service channel.Set ESG channel provides the positional information of the IP stream that is included in other turbo channel, thereby allows other turbo channel of visit to obtain specific IP stream.

The processing that provides OMA-BCAST to serve in the MCAST transmission system according to the embodiment of the invention is provided Figure 65.

With reference to Figure 65, SIC comprises i-IMT, and i-IMT comprises the tabulation of all service entrance points.Service entrance point is described concrete service guide or collection service guide channel.I-IMT comprises the positional information of the IP stream in the turbo channel.

Apparatus for receiving broadcasting obtains i-IMT from SCI.I-IMT comprises the positional information of the channel or the collection service guide channel of concrete service guide.Apparatus for receiving broadcasting is visited the turbo channel that comprises desired service based on the positional information that is included among the i-IMT from the turbo channel.

In each turbo channel, there is the signaling sub-data channel that sends signaling data, IMT can be present in the signaling sub-data channel.IMT can have at least one the service guide bulletin channel position information in the corresponding broadcast channel of being included in, service guide transfer channel and the IP stream.Apparatus for receiving broadcasting obtains service guide based on the positional information that is included among the IMT.Apparatus for receiving broadcasting can specifically be served based on the message reference in the service guide.Now be described in detail allowing the user to receive service method with reference to Figure 66.

Figure 66 illustrates according to the use of passing through of the embodiment of the invention and supports the MCAST of OMA-BCAST that service method is provided.

At first, in order to support OMA-BCAST, must be by transmitting service guide (SG) announcement channel and SG transfer channel more than a channel.Apparatus for receiving broadcasting must sequential access SG announcement channel and SG transfer channel.The SG transfer channel sends the fragment of service guide, and service guide provides the metadata about broadcast service (for example, the configuration of broadcast service).The SG announcement channel is provided for the information of treatment S G transfer channel.

Apparatus for receiving broadcasting is at first visited SIC, to check the turbo channel that transmits the SG announcement channel by it.I-IMT comprises IP address, the SG announcement channel of SG announcement channel or comprises the positional information of the channel of IP stream.For example, i-IMT can comprise the map information between the quantity of the IP address of SG announcement channel and turbo channel.

Apparatus for receiving broadcasting can show about being included in the information of the channel among the i-IMT, thereby the user can select particular channel, and perhaps announcement channel can be selected to need not as acquiescence user's input at random.If the user selects particular channel, the IP address of the channel of then use selecting and the information among the i-IMT of being included in visit the channel of selection.By this way, can provide service guide or service for the user in addition.

In the turbo channel, there is the signaling sub-data channel that sends signaling data.In the signaling sub-data channel, there is the IMT of the positional information that comprises the stream that transmits by current turbo channel.For example, can comprise the IP address of the IP stream that transmits by current turbo channel and the map information between the sub-data channel.

Apparatus for receiving broadcasting can obtain the positional information of SG announcement channel from IMT.Use visits the sub-data channel that comprises the SG announcement channel from the IP address of the SG announcement channel of i-IMT and IMT acquisition.Apparatus for receiving broadcasting obtains the positional information of SG transfer channel by treatment S G announcement channel.For example, can obtain the IP address of SG transfer channel by treatment S G announcement channel.Owing in the IMT that obtains before, have the map information between IP address and the sub-data channel,, and obtain service guide from the SG transfer channel so apparatus for receiving broadcasting visits the SG transfer channel by IP address and the IMT that uses the SG transfer channel.

Service guide is the metadata about the broadcast service that will be provided (such as aforesaid ESG and EPG).Apparatus for receiving broadcasting can be the user service guide is provided, thus the optional broadcast service of selecting a time and hoping of user, or apparatus for receiving broadcasting can provide the broadcast service of being appointed as acquiescence.If the user selects the broadcast service expected, then use service guide that the broadcast service of selection is provided.For example, service guide can comprise the IP address of the IP stream that service is provided.Because the IMT that obtains comprises the map information between IP address and the sub-data channel before,, obtain described broadcast service from service guide and IMT so use the IP address of the IP stream that broadcast service is provided to obtain IP stream.Apparatus for receiving broadcasting provides the broadcast service of selection by using the IP stream that obtains.

Now OMA-BCAST service layer is briefly described.

Service guide allows service and content are described, and creates via broadcast channel and interactive channel or by ordering or purchase provides described service and content by service/content provider.In addition, service guide is described the method for access services.From terminal use's angle, service guide is to be used to find the current accessing points that can be used or be used.In addition, service guide be provided at random, the data entrance of oriented service.

Service guide has following function.

At first, the service guide data model is created service, timetable, content, is related to data supply and the interaction data buying and visit with the service guide fragment form.

Secondly, service guide is found initially to start shooting and the discovery of the entrance of service guide.

The 3rd, not only carry out the service guide transmission by optional, interactive channel, also carry out the service guide transmission by broadcast channel.

At last, service guide renewal, management and completeness guarantee that service guide is up-to-date and offer that the user is used to browse is fully enough.

The ATSC-M/H terminal should support to be used for the pressure part of the OMA-BCAST service guide of service guide function.In addition, in this manual, even the part relevant with the use of exchange method, transmission and service guide should be interpreted as can making when these are specific pressure.Next, will transmission path and the transmission according to data format be described.

At first, will be described real-time A/V flow transmission.

In order to realize the real-time transmission of ATSC-M/H audiovisual broadcast service, should use RTP/UDP as host-host protocol.Different Voice ﹠ Video forms are encapsulated as RTP by each specific RTP payload format for specific just decoder definition.By receiving the optional use of report, the flow transmission aspect increases.

The ATSC-M/H terminal should be supported the pressure part of OMA-BCAST file and be used for the streamed stream issue of real-time audiovisual.In addition, terminal can be supported the related transport process of OMA-BCAST file and stream issue.

Next, the transmission that will flow the A/V by the two-way channel request is described.

The RTP/UDP host-host protocol also is used for the transmission of the audiovisual streams on the interactive channel of order program service.Because interactive mode is optionally, so the ATSC-M/H terminal can be supported the interactive portion as the OMA-BCAST stream shelves of appointment in the standard.

Next, will the non real-time content delivery by broadcast channel be described.

For this reason, in order to realize the transmission of the non real-time content on the broadcast channel, FLUTE/UDP is used as host-host protocol.Can increase the robustness of file transfer in two ways: by application application layer FEC or by being applied in back transmission (error correction) process of operating on the optional Return Channel.

The ATSC-M/H terminal should be supported the pressure part of OMA-BCAST file and be used for the stream issue of the standard of non real-time audio-visual content transmission.In addition, terminal can be supported the related transport process of OMA-BCAST file and stream issue.

Next, will the non real-time content delivery by interactive channel be described.

Because interactive mode is optionally, so the ATSC-M/H terminal can be supported the interactive portion as the OMA-BCAST file shelves of appointment in the standard.Note only should supporting in this case the pressure part of standard.

At last, auxiliary data, advertisement and the notice that defines in the ATSC-M/H terminal support specification.Now to being described by the service of OMA-BCAST and the protection of content.

Figure 67 illustrates four layers that are used to protect service and content according to the embodiment of the invention.

For service protection, support two key management systems (KMS).

A KMS (DRM shelves) who is based on terminal among two KMS is the key management of being carried out by terminal.Another KMS is based on the KMS (smart card shelves) of smart card, by (U) SIM or (R) UIM/CSIM execution.

The ATSC-M/H terminal can be supported two KMS, also can not support in them any one.

If the ATSC-M/H terminal is supported the KMS based on terminal, then it should be supported in the pressure part of the DRM shelves that define in the standard.

If the ATSC-M/H terminal is supported the KMS based on smart card, then it should be supported in the pressure part of the smart card shelves that define in the standard.

More than two KMS all be provided for the high-grade safety of mobile device service protection, and can use two KMS simultaneously.

Now four layers are described with reference to Figure 59.

Communication layers uses IPsec, SRTP or ISMACryp as signcode.

IPsec is Encapsulating Security Payload (ESP) and uses the AES-128-cbc with explicit IV as the cryptographic algorithm in each IP bag.Authentication is optionally and uses HMAC-SHA-1-96.

SRTP uses AES-128-CTR as cryptographic algorithm.Authentication is optionally and uses HMAN-SHA-1-80.

ISMACCryp 1.1 with OMA-BCAST is given for the unknowable expansion of encoding and decoding.AES-BYTE-CTR is as cryptographic algorithm.Authentication is optionally and uses HMAC-SHA1.

In standard, specify key management layer, rights management layer and the registration layer of the DRM shelves be used to use Microsoft PlayReady.

In standard, specify key management layer, rights management layer and the registration layer of the DRM shelves be used to use OMA DRM 2.0.

In standard, specify key management layer, rights management layer and the registration layer that is used for the smart card shelves.

Support mutual terminal can support in DRM shelves or the smart card shelves or support them both.For the DRM shelves, the long term keys message (LTKM) that should be supported on the interactive channel transmits, and the LTKM that can be supported on the broadcast channel transmits.

Do not support mutual terminal can support the DRM shelves.The LTKM that should be supported on the broadcast channel transmits.

The ATSC-M/H terminal can be supported content protecting.If the ATSC-M/H terminal is supported content protecting, then it should be supported among Microsoft PlayReady and the OMA DRM v2.0 or support both.

Allow optional support according to the MCAST system of the embodiment of the invention to interactive channel.Support to interactive features is optional to the ATSC-M/H terminal.Yet if the ATSC-M/H terminal is supported interaction feature, it is mutual that terminal should support that OMA BCAST 1.0 standards are used for the address.For these specifications, support mandatory part.

Below will the presentation layer aspect according to the ATSC-M/H of the embodiment of the invention be described.

About coding and decoding video, the ATSC-M/H terminal should be supported H.264/AVC coding and decoding video.In addition, the ATSC-M/H terminal should be supported at least a in following five kinds of abilities:

To with have value and equal the consistent bit stream of the baseline shelves of H.264/AVC grade 1b of " constraint_set1_flag " field of " 1 " and decode;

To with have value and equal the consistent bit stream of the baseline shelves of H.264/AVC grade 1.2 of " constraint_set1_flag " field of " 1 " and decode;

To with have value and equal the consistent bit stream of the baseline shelves of H.264/AVC grade 2 of " constraint_set1_flag " field of " 1 " and decode;

To with have value and equal the consistent bit stream of the baseline shelves of H.264/AVC grade 3 of " constraint_set1_flag " field of " 1 " and decode;

To with have value and equal the consistent bit stream of the baseline shelves of H.264/AVC class 4 of " constraint_set1_flag " field of " 1 " and decode.

The ATSC-M/H terminal is supported these abilities more than alternatively, and it is higher that those abilities of energy force rate that support is decoded to grade and shelves need.

About frame per second, each frame per second decoding that the reply of ATSC-M/H terminal is allowed by H.264/AVC shelves relevant with the ability of implementing and grade.Frame per second can comprise various frame per second.Decoder does not need bitstream decoding when the ultimate range between two images surpasses 0.7 second.

About depth-width ratio, each depth-width ratio decoding that the reply of ATSC-M/H terminal is allowed by H.264/AVC shelves relevant with the ability of implementing and grade.

About brightness resolution, each brightness resolution decoding that the reply of ATSC-M/H terminal is allowed by H.264/AVC shelves relevant with the ability of implementing and grade.

About colourity, the value decoding of each permission of ATSC-M/H terminal reply colour_primaries, transfer_characteristics and matrix_coefficients.

About chroma format, the value decoding of each permission of ATSC-M/H terminal reply chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_field.

About audio coding decoding, the ATSC-M/H terminal should be supported among HE AAC v2 and the AMR-WB+ (expansion AMR-WB) one or all.

At first, will be described HE AAC v2.The ATSC-M/H terminal should be supported in the list/parameter coding or the 2 channel stereo functions of definition in the HE AAC v2 shelves grade 2.The ATSC-M/H terminal is supported in the decoding of the multichannel audio that defines in the HE AAC v2 shelves class 4 alternatively.

About shelves, the ATSC-M/H terminal should be supported HE AAC v2 shelves.The ATSC-M/H terminal is supported the decoding of HE AAC shelves alternatively.

About bit rate, the ATSC-M/H terminal can be to any bit rate decoding of being permitted by the grade of HE AAC v2 shelves and selection.

About sample frequency, the reply of ATSC-M/H terminal is by each audio sample rate decoding of the grade permission of HE AAC v2 shelves and selection.

About dynamic range control, the ATSC-M/H terminal should be supported MPEG-4 AAC dynamic range control instrument.

About mixing down, the ATSC-M/H terminal should be supported as mixing under the matrix that defines among the MPEG-4.

Now AMR-WB is described.

About audio mode, the ATSC-M/H terminal should be carried out decoding with the monophony and the stereo function that define among the AMR-WB+.

About sample frequency, the ATSC-M/H terminal should be able to be to being decoded by each audio sample rate that is used for monophony and stereosonic AMR-WB+ permission.

About captions, the ATSC-M/H system can use 3GPP time text formatting that captions and closed caption (closed captions) are provided.The ATSC-M/H terminal should support to be used for the 3GPP time text formatting of captions.

Figure 68 illustrates the electric power management mechanism according to the embodiment of the invention.

Usually, the key device of power consumption is display floater (such as LCD) and radio frequency (RF) module.In this section, will the power-saving mechanism based on the RF module controls be described.

In general purpose public address system, must open the RF module and monitor the frame of the frame of all inputs with the searching expectation.In ATSC-MCAST, all turbo service groups merging are mapped to frame sequence, by the information of SIC transmission about frame, for example position of frame and quantity.From the information that transmits, apparatus for receiving broadcasting can be distinguished free time section and operating time section.

Figure 68 illustrates the example of MCAST frame burst, and frame number is used for the identification service.For example, if the user selects program #1, then the RF module can be worked with received frame #1 from RF frame group to #4.That is to say that transport layer order physical layer received frame #1 is to #4.The quantity of RF frame group and the duration of frame burst can change, by the information of SIC transmission about changing.

The MCAST bag of fixed qty is the burst unit.The quantity of MCAST bag changes according to the function of turbo coding mode.The quantity of MCAST bag can change when each burst.

Figure 69 illustrates the parameter about MCAST frame burst according to the embodiment of the invention.

Now the method according to the transmission data of burst transmission methods is described.

Figure 69 illustrates the parameter that is used for time slicing.Parameter is defined as follows:

[table 19]

Parameter	Describe
		Bp	The burst time period (frame)
Bd	Burst duration (frame)
		Ot	Shut-in time (frame)
Bs	Burst sizes (piece)
		Bb	Burst bandwidth (piece/frame)
Cb	Constant bandwidth (piece/frame)

Relation between B parameter d, Bb, Bp and the Cb is expressed as " Bd * Bb=Bp * Cb ".

Figure 70 is the curve chart about energy-conservation parameter that illustrates according to the embodiment of the invention.

Need 3 stages that burst service is assigned to the turbo channel.At first, must use following equation (3) to calculate the bandwidth that is used for each service.In equation (3), " Tc " expression turbo encoding rate, for example 1/2,1/3 or 1/4.

${\mathrm{Cb}}_n=\frac{\mathrm{DataRate}(\mathrm{kbit}/s)}{\frac{32\×8\×78}{24.2\left(\mathrm{ms}\right)}\×\frac{188}{208}\×\mathrm{Tc}}---\left(3\right)$

The second, each service is assigned to bandwidth.

Figure 71 is the chart that each service assignment is used for the method for burst mode transfer to bandwidth that illustrates according to the embodiment of the invention.

Total bandwidth is by following calculating:

CbToT＝Cb1+Cb2+..+CbN (4)

The 3rd, service #1 must be by clockwise or be rotated counterclockwise 90 and spend to #3.

Figure 72 is the chart that illustrates according to the rotation of the service that is used for burst mode transfer of the embodiment of the invention.

Now the AL-FEC according to the embodiment of the invention is described.

About coding, MCASTAL-FEC is the cascaded code of two linear block codes.Internal code and foreign key are defined as generator matrix or equivalent diagram.For example, inside and outside sign indicating number has message code (u ₁, u ₂).u ₁And u ₂In each expression have bit stream greater than the length L of " 1 ".Similarly, the code word in the sign indicating number is expressed as (v ₁, v ₂, v ₃, v ₄, v ₅, v ₆), v _iI=1 ... 6} is the bit stream with length L.

Fix on the matrix G shown in the equation (5), then message code (u if give ₁, u ₂) be encoded as code word (v by v1=u1, v2=u1 (+) u2, v3=u1 (+) u2, v4=u2, v5=u1 and v6=u2 ₁, v ₂, v ₃, v ₄, v ₅, v ₆).Above operator (+) expression XOR (XOR) bit stream.

The length of code word is grown three times than the length of message code.The generator matrix can be expressed as chart by routine.

Figure 73 is the chart that illustrates according to the generator matrix of the embodiment of the invention.Matrix G shown in the graphical presentation equation (5) of Figure 73.The description of chart is equivalent to the generator matrix.Every row in the chart and code word node v _iI=1 ... 6} is corresponding, every line display message code (u ₁, u ₂).The x of matrix G values capable and the y row mean the u in the chart _xWith v _yBetween line.Node degree (u or v) expression be connected to node line quantity and be expressed as deg (u or v).For example, deg (u ₁) be 4, deg (v ₃) be 2.The generator matrix is by the important element of appropriate design.

The design to the generator matrix now is described.

The quantity of supposing information node is k, and the quantity of sign indicating number node is n.Code check is k/n.Message code is by (u ₁, u ₂..., u _k) expression, code word is by (v ₁, v ₂..., v _n) expression.At first, plan is by the conversion acquisition generator matrix of chart.Obtain chart with two steps.First step is to determine code word node degree (deg (v _i)).Second step is connection message node and code word node.

At length, in a first step, a given k information node and n alc code word node, following definite code word node degree (deg (v _i)).

1, determines d from the design parameter Δ _MaxΔ is from 1 to 16 integrated value.d _MaxValue by the design parameter Δ is specified.For example, if Δ is " 8 ", then d _MaxBe " 61 ".

[table 20]

Δ	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
																	d Max	917	388	231	158	117	91	74	61	52	44	38	34	30	27	24	22

2, determine the array of integrated value, and N[i] | i=1,2 ... d _MaxAs follows:

If designed outer sign indicating number, then N[1]=n and N[i]=0 (i=2 ..., d _Max)

If designed ISN, then

$N\left[1\right]=[n\·\frac{2\·\mathrm{\Δ}\·d_{\mathrm{Max}}-100}{d_{\mathrm{Max}}(100+2\·\mathrm{\Δ})}]$

$N\left[i\right]=[n\·\frac{100}{100+2\·\mathrm{\Δ}}\·\frac{d_{\mathrm{Max}}+1}{d_{\mathrm{Max}}-1}\·\frac{1}{i\·(i-1)}],i=3,...,d_{\mathrm{Max}}$

$N\left[2\right]=n-N\left[1\right]-\underset{i=3}{\overset{d_{\mathrm{Max}}}{\mathrm{\Σ}}}N\left[i\right]$

Wherein, [x] expression is littler or equal the maximum positive integer of x than x.

3, determine each code word node degree (deg (v according to the flow chart shown in Figure 63 ₁), deg (v ₂) ..., deg (v _n)).

Figure 74 is the definite deg (v that illustrates according to the embodiment of the invention _i) the flow chart of method.

In operation 7410, with integer variable (k ₁, k ₂..., k _m) be initialized as " 0 ", that is to say, k1=k2=...=km=0, wherein, m represents maximum integer, N[m] not zero.Other integer variable j is set to " 1 ".

At operation S7420, determine index a, such as, $a=\underset{i}{\arg }\underset{i=1,...,m}{\min }\frac{k_i}{N\left[i\right]}.$ When having a plurality of minimum value, determine a class index a, b ..., c}.

At operation S7430, v _jDegree be a, j increases by 1.In addition, v _jDegree be b, j increases by 1.Repeat this process up to having used all indexes.

The operation S7440, only the index group a, b ..., the variable (k of appointment among the c} _a, k _b..., k _c) increase by 1.

At operation S7450, confirm whether determine all degree (deg (v _j), j=1 ..., n).If not definite fully, repetitive operation S7420 then.

In second step, a given k information node and n code word node, the code word node degree is deg (v _i), be connected to the information node of code word node according to the flow chart inspection of Figure 64.

Figure 75 illustrates according to the information node of the embodiment of the invention flow chart to the connection of code node.

At operation S7510, code word node v _jIndex variable j be initialized to " 1 ".

The operation S7520, acquisition will with code word node v _jOne group of related information node a, b ..., c}.Element in this group (| a, b ..., quantity c}|) should equal v _jDegree deg (v _j).

The operation S7530, identification will with { u _a, u _b..., u _cBe connected to code word node v _jInformation node.

At operation S7540, all code word nodes are repeated said process.

Figure 76 is the flow chart that is shown specifically according to the operation S7520 shown in Figure 75 of the embodiment of the invention.

At operation S7610, information node index group U and S be initialized as respectively 1 ..., k} and { }.Group U and S are der group, as this order of giving a definition.X element a and y element b among given group of U and the S, if x＜y, a＜b then, vice versa.Before calling this process, only carry out this initialization once.

At operation S7620, obtain 1 ..., | after the pseudorandom values x among the u|}, the x element among the group U obtains with the information node index that returns, wherein | u| represents to organize the quantity of all elements among the U.Subsequently, this element moves to group S from group U.By this way, the information node exponential quantity of selecting before all is included among the group S, and other unselected node is still in group U simultaneously.

At operation S7630, determine whether group U is empty group.If group U is empty, then executable operations S7630 be initialized as respectively will organize U and S respectively 1 ..., k} and { }.

Appointment acquisition in Figure 76 1 ..., | the information node index among the u|} is counted the operation of x.Finish described operation by the Mersenne Twister (MT) that produces algorithm as pseudo random number, described Mersenne Twister (MT) is proposed in 1996/1997 year by Makoto Matsumoto and Takuji Nishimura and improved in 2002.The standard C code that has the inventor can freely be applied to any purpose, comprises commercial the use.

Before calling any process, by unlabelled 32 integer seeds (seed) initialization Mersenne Twister (MT).Obtain 1 ..., | the index among the u|} is counted x, produces unlabelled 32 integer seeds subsequently, obtains such as | u|＜=2 ^eSmallest positive integral e, obtain maximum e position, if described number ratio | u| is big or equal | u|, then abandon and repeat once more before process.If described number ratio | u| is little, then the information node index count x be 1 ..., | the number among the u|}+1.

Now the method to design generator matrix is described.

Code word node (v in each row and the chart _i, i=1 ..., n) corresponding, each line display information node (u _i, i=1 ..., k).Work as u _xBe connected to the v in the chart _yThe time, the elements capable and the y row of the x in the generator matrix should be " 1 ".If do not connect, then element should be 0.

Now the AL-FEC sign indicating number to pre-design is described.

In order to define MCAST AL-FEC sign indicating number, two matrixes have been defined.One of them is used for ISN, and another is used for outer sign indicating number.

(n, k) MCASTAL-FEC sign indicating number, ISN should be a (n, k+ δ to given a _k) sign indicating number, outer sign indicating number should be a (k+ δ _k, k) sign indicating number.K+ δ _kThe code word node outside being in the sign indicating number and the quantity of the information node in the ISN.

In order to define the deg (v in the ISN _j), the design parameter Δ need be provided.

In order to define the u in ISN and the outer sign indicating number _iWith v _jBetween connection, need be provided for the random seed of MersenneTwister process.This seed application in ISN and outer yard both.

Therefore, three parameter δ _k, Δ and seed enough define MCAST AL-FEC sign indicating number.For three different (these parameters are listed as follows for n, k) MCASTAL-FEC sign indicating number:

[table 21]

(n，k)	(δ k, Δ, seed)
		(2880，2304)	(10，6，14)
(1920，1536)	(3，8，6)
		(960，768)	(1，8，8)

Figure 77 is the block diagram according to the MCAST apparatus for receiving broadcasting of the embodiment of the invention.

With reference to Figure 77, apparatus for receiving broadcasting comprises that signaling information extractor 7701, data obtain unit 7702 and data processing unit 7703.

Signaling information extractor 7701 obtains to handle the required signaling information of transmission channel.Can transmit signaling information by transmission channel such as SIC.Signaling information can comprise handle the required configuration information of transmission channel about ATSC M/H stream, about in the configuration information of the error correction information of transmission channel, transmission channel at least one.

Signaling information can also be sent out in the continuous or discontinuous ATSC of the being included in normal stream subsequently.Signaling information is included in the precalculated position of frame, or the positional information of signaling information is included in the precalculated position of frame, thereby signaling information extractor 7701 can be discerned the position of signaling information.In addition, but by inside or the outside position that comprises certain bits stream indication signaling information at the channel that sends signaling information.

Handle the required information of other transmission channel because signaling information comprises,, thereby can comprise the extra-code that is used for error correction so it is an important information.Can transmission signaling information in band or out of band, or send signaling information by the ad-hoc location of transport stream.

Data obtain the bag that unit 7702 obtains by the transmission channel transmission.The term of Shi Yonging " transmission channel " has the definition wideer than the transmission channel that uses in the general purpose public address system in this manual.That is to say, comprise the stream that is transmitted when being included in another transport stream according to term of the present invention " transmission channel ".For example, can send ATSC normal stream (MPEG-2 TS) by the transport stream that comprises MPEG-2 TS stream or other type by the additional indication in the ATSC normal stream.In current embodiment, apparatus for receiving broadcasting obtains data by the transport stream that processing is included in the normal stream.Can be according to preordering method or by using the above-mentioned signaling information that sends via particular channel to obtain data such as SIC.To be inserted into another transport stream by the transport stream that portable terminal receives according to of the present invention, or send the information of this insertion of indication by SIC.For example, transport stream comprises the exclusive data field at MPEG-2 TS empty bag zone or MPEG-2TS.

If to another transport stream, can comprise also that then additional header or display message are to handle the stream that inserts or add according to of the present invention will being inserted into (or interpolation) by the transport stream that portable terminal receives.For example, can comprise information about the beginning of the stream that adds and end position, about the information of the length of the stream that adds, the combination of the required out of Memory of the stream that indicates whether to exist the information and handling of the stream of interpolation to add.

Though not shown in the drawings, data obtain unit 7702 can comprise metamessage output unit and transmission channel addressed location.

The metamessage output unit is provided by the metadata about the broadcast service that provides.Metadata provides the information that the broadcast service that provides is provided, such as ESG, EPG or OMA BCAST service guide.Metadata can comprise the required information of transmission package of handling.For example, also can comprise the SDP data that are used for process IP stream in the metadata.The information that also can comprise the position of indicating the transmission channel that comprises IP stream in the metadata.That is to say that various various information about service can be considered to metadata.Below, present invention is described as the example of metadata with OMA BCAST service guide.Must obtain service guide by connected reference service guide announcement channel and service guide transfer channel, so that the service according to OMA BCAST to be provided.Can in the i-IMT among the aforesaid SIC, specify the transmission channel that sends the service guide announcement channel.Therefore, the metamessage output unit obtains about the metadata of the service that provides by transmission channel and subsequently with its output from i-IMT.

If the MCAST transmission system is supported the high speed access such as above-mentioned main service, then can when obtaining metadata, provide main service.

The transmission channel that broadcast service is provided that the visit of transmission channel addressed location is selected by the user.Perhaps, apparatus for receiving broadcasting or broadcast service provider can be selected transmission channel automatically.

If selected transmission channel, then obtain the data that send by transmission channel.Can be with bag unit, byte stream unit or bit stream unit structure data by the transmission channel transmission.The error protection sign indicating number can be added to data to correct mistake wherein.In this case, use the error protection sign indicating number to correct mistake.As mentioned above, the data that send by transmission channel can be present in ad-hoc location or the known position of SIC, and the transmission channel addressed location can be handled all this information.Yet,, can obtain unit 7703 by data and carry out this information processing according to another embodiment of the present invention.

Data processing unit 7703 is handled the data that obtain.Can be with bag unit, byte stream unit or bit stream cell processing data.If with bag cell processing data, then head is present in each bag.Each comprises the configuration information of bag, and based on the configuration information recovery initial data.

Particularly, be wrapper according to the MCAST transmission system of current embodiment with the application data burst and wrapper is segmented into transmission package.In this case, data processing unit 7703 recovers wrapper and recovers the original application data by the header that uses wrapper by the header that uses transmission package.

According to another embodiment of the present invention, can be in the Bao Liuzhong deal with data.In this case, obtain the configuration information (for example, above-mentioned LMT) about bag stream, subsequently, the bag that is included in Bao Liuzhong by processing obtains data.

Decoding or not decoded after by data from the output acquisition of output device (not shown).Output device handle with addressed location (AU) and dateout to provide broadcast service to the user.AU represents to be output device or decoding device is divided and the minimum unit of processing.For example, under the situation of video, I, P and B frame bag can be the AU unit, and under the situation of MPEG-2 transmission package, PES or segment data can be the AU unit.

Though not shown in the drawings, apparatus for receiving broadcasting can comprise that also channel is provided with the stream information receiver of module, RF receiver, baseband processor and embedding.Channel is provided with module frequency configuration is arrived channel, and the RF receiving equipment receives and the corresponding signal of frequency that is provided with.The signal that baseband processor receives is transformed to bit stream with it, to handle the signal of aft section.The stream information receiver that embeds receives the information about the stream that embeds.Information about the stream that embeds can be to handle the required any information of stream that embeds, comprise appointment whether exist the stream of embedding, embedding stream type or handle the method for the stream that embeds, for example, interweave outward, RS parity information, time-interleaved information.

If first transport stream comprises second transport stream of identical or different form, then the stream of the embedding of describing with reference to Figure 77 is used to indicate second transport stream that comprises.Therefore, the information that is used to handle the stream of embedding is sent out in band or out of band, or predetermined situation or value be used, thereby apparatus for receiving broadcasting can be discerned this information.

Figure 78 is the flow chart that the method for broadcasting according to the reception of the embodiment of the invention is shown.

At operation S7810, the frequency of channel is set.

At operation S7820, receive and the corresponding signal of frequency that is provided with.

At operation S7830, receive information about the stream that embeds.

At operation S7840, obtain to comprise the signaling information of the information that is used to handle one or more transmission channels.In this manual, can send signaling information by SIC.

At operation S7850, the information of transmission channel is provided for the user, to derive user's selection.

At operation S7860, select to provide the transmission channel of service based on user's input.Perhaps, Yu Ding transmission channel can be selected as acquiescence.

At operation S7870, used one or more transmission channels to receive data.

At operation S7880, handle the data that receive.

In operation S7890, the data that output is handled.

Can or send transmission frame respectively by the transmission frame that in the ATSC transmission system, uses according to the embodiment of the invention.Be sent out if be included in the transmission frame of the transport stream of using in another transmission system, then can skip the certain operations shown in Figure 78 according to another embodiment of the present invention.

The schematically illustrated A-VSB MCAST receiving system of Figure 79 according to the embodiment of the invention.

To offer the user by the broadcast singal that tuner receives by physical layer, data link layer, transport layer and application layer.These layers in operation and the MCAST transmission system of the layer shown in Figure 79 are opposite.

Physical layer obtains the MCAST transmission frame from the broadcast singal that receives.The MCAST transmission frame can be inserted into the transmission frame in another transmission system and be sent out subsequently.Therefore, physical layer must obtain the MCAST transmission frame.If the MCAST transmission frame is inserted into the ATSC transmission frame and is sent out subsequently, then obtain the MCAST transmission frame by detecting " deterministic frame sync (DFS) " field, wherein, described MCAST transmission frame is divided into N bag.The MCAST transmission frame has definite structure, no matter so N bag can be included in the MCAST transmission frame and whether have mistake.

The data link layer correction is by the data of turbo channel transmission and by the mistake in the multi-disc signaling information of SIC transmission.Transmitting terminal can be applied to specific FEC (code check etc.) each turbo channel.Particularly, robustness FEC can be applied to the signaling information among the SIC.Data link layer in the apparatus for receiving broadcasting can be used such as the extra-code of FEC and carry out error correction.

Transport layer in the apparatus for receiving broadcasting comprises packing layer and encapsulated layer.The packing layer is created wrapper by handling the multiplexing transmission bag, and encapsulated layer recovers original application data and application specific information by handling wrapper.Application data can comprise real-time media data, IP data, object data and signaling data.

The transmission frame that uses in the MCAST transmission system has definite structure.That is to say, in a transmission frame, have the integration bag.When transmission frame has definite structure, owing to can from bag, remove " sync " field or " CC " field, so it is effective.Yet, according to of the present invention to wrap up unit multiplexed and to send in the system of data, use the multiplexing pattern of wants of parcel all bags with received parcel.If in some bags, mistake takes place, then must receive the mistake bag to constitute parcel.Perhaps, the position change of the data in sub-data channel ending deviant and the actual package, thus avoid receiving fully all bags.For example, the position of indication transmission channel come the position of designation data such as the information of LMT by using the deviant in the frame, thereby, physical layer must with in addition the mistake bag send to the upper strata.

Therefore, when mistake takes place in specified packet when, need indication in this bag mistake be instructed to or wrap that Deplexing apparatus is notified should the fact.Can be as the generation of the mistake that sends a notice:

At first, indicate the generation of mistake by " error_indicator " field in the packet header.Under the situation of MPEG-2TS, use this method.Yet, because newer field must be added to packet header, so bag efficient reduces.

The second, use the hardware signal mark in current bag, mistake to take place with indication.When not using " error_indicator " field, by the additional signaling indication mistake takes place.Yet, because signaling information must be synchronous with bag, expense takes place.

The 3rd, be created in that unspecified added field is used for each bag in the standard, " error_indicator " field is included in the added field.Yet, because terminal must be inserted the information that mistake takes place in expression separately, so inconvenient.

In order to address these problems, use the combination of the field that mistake is shown impliedly to indicate the generation of mistake according to the structure in packet header.Can indicate the generation of mistake by the head that is structured in non-existent mistake bag in the actual packet.That is to say, use the actual combination that can not be present in the field in the packet header to make up the head of mistake bag.Owing to can not there be such header structure, to determine to have the bag of such header structure be the mistake bag so wrap demultiplexing unit.

Below be illustrated in the embodiment of the head of the mistake bag that defines among the MCAST:

First_last 0x00

DC_flag 0x01

These fields represent that wrapper is not first bag and comprises decoder configurations information.

Decoder configurations information always is included in the position of first bag that has wrapper, thereby can not be present in the MCAST bag.Therefore, to determine to illustrate the bag of such header structure be the mistake bag to terminal.

Figure 80 is the block diagram according to the apparatus for receiving broadcasting that can indicate the mistake bag of the embodiment of the invention.With reference to Figure 80, apparatus for receiving broadcasting comprises that RF module 8001, baseband processing unit 8802, DFS sensing unit 8003, preposition head insert unit 8004, demultiplexing unit 8005 and renderer 8006.

RF module 8001 receives analog broadcast signal, and baseband processing unit 8802 produces bit stream according to ATSC and A-VSB standard.DFS sensing unit 8003 is divided into N bag with bit stream.

Preposition head inserts unit 8004 preposition head is inserted in each bag.According to the type of bag, preposition head can comprise whether identifier, the indication of the type of expression bag exist the error message of mistake and be used for checking whether have successional " CC " field in bag.By using " CC " field, can determine whether to exist packet loss.

To with reference to Figure 82 preposition structure according to the embodiment of the invention be described afterwards.

Demultiplexing unit 8005 demultiplexing transmission package.In this case, can use the identifier of the type that is included in the expression bag in the preposition head.

Renderer 8006 deal with data are also exported result.

Figure 81 is the flow chart that illustrates according to the method for the broadcasting of the reception of embodiment of the invention indication mistake bag.

At operation S8110, receive bit stream from baseband processor.

At operation S8120, bit stream is divided into N bag by using DFS.The value of N can change according to transmission mode.

At operation S8130, carry out error correction.Error correction method is corresponding with the error protection method that uses at transmitting terminal.For example, can carry out RS decoding or outer decoding.

At operation S8140, the type of identification bag.For example, determine that transmission package comprises the signaling packet or the general data bag of signaling data.

At operation S8150, identifier is added in each bag according to the bag type.For example, " 0x30 " added to as identifier in the signaling packet that comprises signaling information, " 0x47 " added in the common MCAST transmission package as identifier.

At operation S8160, determine in each bag, whether have mistake, when having mistake, this true information of indication is added in the bag with mistake.

At operation S8170, determine whether all bags have been carried out all mentioned operations.If not, then repeat aforesaid operations.

The operation S8180, by demodulation multiplexer at the transport layer process bag.

Carry out aforesaid operations S8110 to S8170 by baseband processor or under transport layer.

Figure 82 A and Figure 82 B illustrate the structure according to the preposition head of the embodiment of the invention.

Preposition head can comprise sync byte and CC field.

Sync byte is a byte and the identifying information that comprises identification bag type.For example, " 0x38 " but the indication signaling bag, " 0x47 " can indicate the general data bag.

The CC field is 1 byte field, and can comprise the error flag that whether has mistake in the indication bag.When having mistake, can use 1 CC field indication mistake.

For example, " 0,1,2,3,4 ..., 254,255,0,1,2,3 ... " there is not mistake in indication, " 0,1,2,3,4 ..., 126,127,0,1,2,3 ... " there is mistake in indication.

Figure 83 is the flow chart that apparatus for receiving broadcasting is handled the method for DCI that passes through that illustrates according to the embodiment of the invention.

At operation S8310, receive the MCAST transmission package.

At operation S8310, check the RAP mark.

If the RAP mark is activated, then make up wrapper at operation S8330.

At operation S8340, check DCI.

At operation S8350, resolve the DCI field.

At operation S8360, decoder is set with corresponding with the DCI field.

Figure 84 A illustrates the method according to the TCC in the renewal adaptation time burst of the embodiment of the invention.

With reference to Figure 84 A, GOF comprises five frames, and numeral 0 to 5 is assigned to the frame that belongs to each GOF respectively.

Can send " TCC_next_update_offset " field by " the service configuration information " field among the SIC, and indication is with the frame, the TCC that upgrade.That is to say,, then mean after 4 frames and upgrade TCC if " TCC_next_update_offset " field has value 4.

The value of " Next_update_offset " field changes according to channel type, can use " TCC_next_update_offset " field and " Next_update_offset " field to calculate the time point of the TCC that upgrades in each channel.In current embodiment, the time point of the TCC that upgrades in the turbo channel is (TCC_next_update_offset+Next_update_offset).

At first, will the time point of the TCC that upgrade in channel be described.

When reception had value 1 and belongs to the frame of a GOF, apparatus for receiving broadcasting obtained the value of " TCC_next_update_offset " field and " Next_update_offset " field.In current embodiment, the value of " TCC_next_update_offset " field is " 4 ", and the value of " Next_update_offset " field is " 0 ".Therefore, at the turbo channel configuration information (TCC) that upgrades channel A by time point value and (that is, after 4 frames) indication of " TCC_next_update_offset " field and " Next_update_offset " field.Therefore, begin to use the TCC of change from the frame that has value 5 and belong to a GOF.

Similarly, in channel B, the TCC of change is begun to use from the frame that has value 2 and belong to the 2nd GOF, and in channel C, the TCC of change is begun application from the frame that has value 5 and belong to the 2nd GOF.

Figure 84 B illustrates the update method according to the BD in the use adaptation time burst of the embodiment of the invention.At length, Figure 84 B illustrates by use and is included in the method that information among the BD is upgraded IMT and channel information.Similar to Figure 84 A, GOF is made up of 5 frames, and numeral 0 to 5 is assigned to the frame that belongs to each GOF respectively.

Have value 1 and belong to a GOF if suppose frame, then apparatus for receiving broadcasting obtains the value of " BD_next_update_offset " field.In current embodiment, the value of " BD_next_update_offset " field is " 4 ".

In addition, the value that obtains to be included in " update_frame_counter " (or " channel_info_update ") field in " channel_info_descriptor " field and be included in " extended version " field in " IMT " field.In current embodiment, " BD_next_update_offset " field has value " 4 ", and " extended version " field has value " 0 ".Therefore, upgrade IMT at value and time point (that is, after 4 frames) indication by " BD_next_update_offset " field and " extended version " field.Therefore, begin to use the IMT of renewal from the frame that has value 5 and belong to a GOF.

In addition, upgrade the turbo channel information at value and time point (that is, after 7 frames) indication by " BD_next_update_offset " field and " update_frame_counter " field.Therefore, begin to use the channel information of renewal from the frame that has value 2 and belong to the 2nd GOF.Upgrade the turbo channel information not only with reference to the situation that changes the turbo channel configuration information, also with reference to the situation of adding or cancel some turbo channels.

When BD was made up of a plurality of frames, the value of " update_frame_counter " field was bigger than " 0 ".

Figure 85 is the block diagram of equipment 8500 that is used to send broadcast service according to the embodiment of the invention.

With reference to Figure 85, equipment 8500 comprises wrapper generation unit 8510, transmission package generation unit 8520 and service configuration information generation unit 8530.

Wrapper generation unit 8510 receives application datas, produces the wrapper of the configuration information that comprises that the type with application data that will be sent out and application data adapts to, and wrapper is outputed to transmission package generation unit 8520.

In an embodiment of the present invention, application data is a kind of in signaling data, real-time media data, IP data and the object data.According to the type of application data, the information about wrapper is set differently.

Particularly, the decoder configurations information (DCI) that in head region, comprises the specification of determining the purpose decoder according to the wrapper that comprises the real-time media data of the embodiment of the invention.

Transmission package generation unit 8520 receives wrapper from wrapper generation unit 8510, wrapper is divided into the data that comprise wrapper and about in the transmission package of the pre-sizing of the information of wrapper itself at least one, and transmission package is outputed to service configuration information generation unit 8530.

According to embodiments of the invention, transmission package generation unit 8520 produces the transmission package that comprises basic head region, pointer area, fill area, location map table (LMT) zone, link information table (LIT) zone and payload area.

Service configuration information generation unit 8530 receives transmission package from transmission package generation unit 8520, generation comprises the service configuration information about the configuration information of the channel that comprises transmission package, and service configuration information is outputed to the SIC in precalculated position from least one transmission channel on the transport stream.

According to embodiments of the invention, service configuration information generation unit 8530 comprises service configuration information determining unit, is used to determine to comprise about the information of turbo channel and the service configuration information of frame group information.

Figure 86 is the block diagram of equipment 8600 that is used to receive broadcast service according to the embodiment of the invention.With reference to Figure 86, equipment 8690 comprises transmission channel determining unit 8610, transmission package extraction unit 8620, transmission package information extraction unit 8630, wrapper assembled unit 8640 and application data assembled unit 8650.

Transmission channel determining unit 8610 is determined predetermined transmission channel by the service configuration information that the information on services channel that uses the precalculated position from the frame that receives extracts, and will output to transmission package extraction unit 8620 about the information of the transmission channel determined.

According to embodiments of the invention, from information and the frame group information of service configuration information extraction about the turbo channel.

Transmission package extraction unit 8620 extracts transmission package from the transmission channel of being determined by transmission channel determining unit 8610, and transmission package is outputed to transmission package information extraction unit 8630.

Transmission package information extraction unit 8630 is extracted transmission package information from the transmission package of being extracted by transmission package extraction unit 8620, and transmission package is outputed to wrapper assembled unit 8640.

The transmission package information acquisition that wrapper assembled unit 8640 extracts by use comprises the combination of the wrapper of at least one transmission package, and it is outputed to application data generation unit 290.

In current embodiment, extract configurations information, LMT, LIT and program clock reference from transmission package.

Application data assembled unit 8650 extracts wrapper information from the combination of wrapper assembled unit 8640 reception wrappers from wrapper, and by using the wrapper information of extracting to produce the application data that comprises at least one wrapper.

Figure 87 is the flow chart that illustrates according to the method for the transmission broadcast service of the embodiment of the invention.

In operation 8710, produce the wrapper of the configuration information comprise that the type with application data that will be sent out and application data adapts to.

In operation 8720, obtain to comprise transmission package about the data of wrapper by the bag that wrapper is divided into pre-sizing.Transmission package comprises the information about the structure of transmission package.

In operation 8730, produce and to comprise the service configuration information of setting, and it is included among the SIC in the precalculated position at least one transmission channel on the transport stream about the ensemble of communication of the channel that comprises transmission package.

Figure 88 is the flow chart that illustrates according to the method for the reception broadcast service that is used for mobile communication of the embodiment of the invention.

In operation 8810, by using the definite predetermined transmission channel of service configuration information that extracts from SIC.

In operation 8820, extract transmission package from predetermined transmission channel.

In operation 8830, from the information of transmission package extraction about transmission package.

In operation 8840, use information to produce the combination that each has the wrapper of at least one transmission package about transmission package.

In operation 8850, use the combination that produces the application data that comprises at least one wrapper about the information of wrapper of extracting from wrapper.

Above embodiment of the present invention can be implemented as computer program and realize on the general purpose digital computer of readable medium recording program performing executive program that uses a computer.The example of computer readable recording medium storing program for performing comprises: magnetic-based storage media (for example, ROM, floppy disk, hard disk etc.), optical recording media (for example, CD-ROM or DVD) and such as the storage medium of carrier wave (for example, passing through internet transmission).

Each square frame that is used to explain data field, pack arrangement, API and the flow chart of embodiments of the invention can be realized by computer program instructions.These computer program instructions can be provided for all-purpose computer, special-purpose computer or make the processor of other programmable data processing device of machine, and the device that is used for carrying out in the function of the square frame appointment of flow chart is created in these instructions of carrying out by computer or other programmable data processing device.These computer program instructions also can be stored in can vectoring computer or the computer that moves in special mode of other programmable data processing device can with or computer-readable memory in, thereby make be stored in computer can with or computer-readable memory in instruction produce and comprise the device of carrying out the function of appointment in the square frame.Computer program instructions also can be written into computer or other programmable data processing device to cause the sequence of operations step that computer or other programmable data processing device are carried out, with generation computer implementation, thereby make the instruction of carrying out on computer or other programmable data processing device be provided for carrying out the step of the function of appointment in the square frame.

But each square frame representation module, the section of flow chart or comprise is used to realize the partial code of one or more executable instructions of specific logical function.Should notice also that in some optional implementations the function that is recorded in the flow chart may be not according to occurring in sequence.For example, two square frames that illustrate continuously may in fact be carried out simultaneously according to relevant function or square frame may be performed with opposite order sometimes.

In addition, data field that illustrates in this manual and bag can be able to be carried out other data field and the bag of identical function and be replaced.

Claims (10)

1, a kind of method that is used for the transmission broadcast service of mobile communication, described method comprises:

Generation comprises and the configuration information that the application data that is sent out is adapted and the wrapper of application data;

Have transmission package about the data of wrapper by the packet generation that wrapper is divided into pre-sizing, wherein, transmission package comprises the information about the structure of transmission package; And

Generation comprises the service configuration information about the ensemble of communication of the channel with transmission package, and service configuration information is included in the information on services channel in the precalculated position at least one transmission channel on the transport stream.

2, a kind of method that is used for the reception broadcast service of mobile communication, described method comprises:

Determine given transport channel by using from the service configuration information of information on services channel extraction;

Extract transmission package from the transmission channel of determining;

Extract information from the transmission package of extracting about transmission package;

Obtain the combination that each has the wrapper of at least one transmission package by the information of extracting about transmission package; And

The combination that has the application data of at least one wrapper by using information about wrapper to obtain wherein, is extracted wrapper from the combination of wrapper.

3, a kind of equipment that is used for the transmission broadcast service of mobile communication, described equipment comprises:

Wrapper generation unit, generation comprise and the configuration information that the application data that is sent out is adapted and the wrapper of application data;

The transmission package generation unit has transmission package about the data of wrapper by the packet generation that wrapper is divided into pre-sizing, and wherein, transmission package comprises the information about the structure of transmission package; With

Service configuration information generation unit produces the service configuration information comprise about the information of channel with transmission package, and service configuration information is included in the information on services channel in the precalculated position at least one transmission channel on the transport stream.

4, a kind of equipment that is used for the reception broadcast service of mobile communication, described equipment comprises:

The transmitting channel determining unit is determined given transport channel by using from the service configuration information of information on services channel extraction;

The transmission package extraction unit extracts transmission package from the transmission channel of determining;

The transmission package information extraction unit is extracted information about transmission package from the transmission package of extracting;

The wrapper assembled unit obtains the combination that each has the wrapper of at least one transmission package by using the information about transmission package; With

The application data assembled unit by using the combination that obtains to have the application data of at least one wrapper about wrapper information, wherein, extracts wrapper from the combination of wrapper.

5, a kind of method that sends stream, described method comprises:

Second transport stream that required being used to of portable terminal is received broadcast data is inserted first transport stream; And

First transport stream of second transport stream has been inserted in transmission.

6, method as claimed in claim 5, wherein, second transport stream is inserted into the precalculated position on first transport stream.

7, method as claimed in claim 5 also comprises: produces and to comprise about the information of the position of second transport stream and handle at least one signaling information in the required information of second transport stream,

Wherein, during sending first transport stream, also send signaling information.

8, a kind of method that receives stream, described method comprises:

First transport stream of having inserted second transport stream by reception obtains second transport stream; And

Handle second transport stream,

Wherein, second transport stream comprises that portable terminal receives the required additional information of broadcast data.

9, method as claimed in claim 8, wherein, second transport stream is inserted into the precalculated position on first transport stream.

10, method as claimed in claim 8 wherein, during obtaining second transport stream, also obtains to comprise about the information of the position of second transport stream and handles at least one signaling information in the required information of second transport stream, and

The treatment step of second transport stream comprises based on signaling information handles second transport stream.

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