CN104320212A - Transmitting/receiving system and method of processing data in the transmitting/receiving system - Google Patents
Transmitting/receiving system and method of processing data in the transmitting/receiving system Download PDFInfo
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- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H—ELECTRICITY
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- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
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- H—ELECTRICITY
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64315—DVB-H
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
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Abstract
The invention discloses a transmitting/receiving system and a method of processing data in the transmitting/receiving system. The receiving system includes a receiving unit, a first handler, and a second handler. The receiving unit receives a broadcast signal through a mobile broadcast network. Herein, the broadcast signal includes mobile service data and a first signaling table. And, the first signaling table includes service guide transmission information and service guide bootstrapping information on the mobile service data. The first handler acquires the service guide bootstrapping information based upon the service guide transmission information included in the first signaling table. And, the second handler accesses a service guide by using the acquired service guide bootstrapping information.
Description
The application to be original bill application number be 200980157580.2 application for a patent for invention (international application no: PCT/KR2009/005775, international filing date: on October 9th, 2009, denomination of invention: transmitting/receiving system and the method for deal with data in this transmitting/receiving system) divisional application.
Technical field
The present invention relates to a kind of transmitting system for sending broadcast data, for receive the data that this transmitting system sends receiving system (or receiver) and in this transmitting system and receiving system (or receiver) method of deal with data.
Background technology
Residual sideband (VSB:vestigial sideband) transmission mode being adopted to standards for digital broadcasting in North America and Korea S is a kind of system using single carrier method.Therefore, in poor channel circumstance, the receptivity of digital broadcast receiving system can deterioration.Specifically, owing to more can require there is higher resistivity to channel variation and noise when using portable and/or portable broadcasting receiver, therefore when using VSB transmission mode to send mobile service data, receptivity may be more deteriorated.
Summary of the invention
Technical problem
Therefore, the present invention relates to a kind of digital broadcast transmission/receiving system and data processing method, it can be avoided substantially due to the limitation of prior art and shortcoming and one or more problem caused.
One object of the present invention is to provide a kind of digital broadcast transmission/receiving system and data processing method, and it can highly resist channel variation and noise.
Another object of the present invention is to a kind of method providing receiving system and deal with data, it can receive business guide efficiently.
Another object of the present invention is to a kind of method providing receiving system and deal with data, it can receive the guidance information of business guide.
Another object of the present invention is to a kind of method providing receiving system and deal with data, it can receive the guidance information of the business guide sent by the mobile broadcasting of different channels.
Another object of the present invention is to a kind of method providing receiving system and deal with data, it can receive the guidance information of the business guide sent by different radio networks.
Another object of the present invention is to a kind of method providing receiving system and deal with data, it can receive the guidance information of the business guide sent by two-way (two-way or mutual) channel.
Other advantage of the present invention, object and feature will partly be set forth in the following description, and for those skilled in the art, partly will become clear by studying following specification, or can by learning practice of the present invention.These objects of the present invention and other advantage can be realized by the structure specifically noted in specification, claims and accompanying drawing and be obtained.
Technical scheme
In order to realize these objects and other advantage, and according to object of the present invention, as specifically implemented at this and broadly described, the invention provides the data processing method in a kind of receiving system, the method comprises the following steps: by mobile broadcast network receiving broadcast signal, wherein, and this broadcast singal comprises mobile service data and the first signaling table, and wherein, this first signaling table comprises the business guide transmission information relevant with described mobile service data and business guide guidance information; Business guide guidance information is obtained based on the business guide transmission information be included in described first signaling table; Business guide is visited by using the business guide guidance information obtained.
Here, when described business guide transmission information indicate business guide to be included in the described broadcast singal comprising described mobile service data and to be sent out time, described business guide guidance information can comprise: comprise the identifier of the mobile service of described business guide and the transport session identifier relevant with the notification channel of described business guide.
When described business guide transmission information indicate business guide to be included in the broadcast singal of the physical channel different from the physical channel of the described broadcast singal comprising described mobile service data and to be sent out time, described business guide guidance information can comprise: comprise the transport stream identification symbol of the broadcast singal of described business guide, comprise the identifier of the mobile service of described business guide and the transport session identifier relevant with the notification channel of described business guide.
When described business guide transmission information indicate business guide be sent to the radio network different from described mobile broadcast network time, described business guide guidance information can comprise: the IP visit information relevant with the notification channel of described business guide and the transport session identifier relevant with the notification channel of described business guide.
And last, when described business guide transmission information indicate business guide sent by interactive channel time, described business guide guidance information can comprise: the URL(uniform resource locator) (URL) indicating the inlet point position of described business guide.
In another aspect of this invention, provide a kind of receiving system, this receiving system comprises receiving element, the first processor and the second processor.Described receiving element is by mobile broadcast network receiving broadcast signal.Here, described broadcast singal comprises mobile service data and the first signaling table.Further, described first signaling table comprises the business guide transmission information relevant with described mobile service data and business guide guidance information.Described first processor obtains business guide guidance information based on the business guide transmission information be included in described first signaling table.Further, described second processor visits business guide by using the business guide guidance information obtained.
Should be understood that, be all exemplary and explanat to above general introduction of the present invention and following detailed description, and be intended to provide further understanding to the present invention for required protection.
Beneficial effect
Have the following advantages according to transmission of the present invention and receiving system and broadcast signal processing method thereof.
The present invention comes by the map information between signal notice assemblage and mobile service by using FIC block, and FIC block can be divided into FIC segment unit and send, thus makes receiving system can perform fastext acquisition.
In addition, by using the business guide guidance information informing guide access list (GAT) via signal, even if the business guide associated with current mobile broadcasting to be sent to any one in current mobile broadcasting, the mobile broadcasting of another channel, another radio network and interactive channel, also may have access to this business guide.
In addition, even if in the channel with serious phantom (ghost) effect and noise, the present invention also can without any receiving mobile service data mistakenly.In addition, insert given data by ad-hoc location in data area and data after transmission processing, though be subject to frequent change the channel circumstance of impact under, also can improve the receptivity of receiving system.
Finally, frequently change impact what apply the present invention to be subject to channel and need for more effective when the movement of the protection (or opposing) of critical noisy and portable receiver.
Accompanying drawing explanation
Accompanying drawing is included to provide a further understanding of the present invention, and be incorporated to accompanying drawing and a formation the application's part, accompanying drawing shows embodiments of the present invention, and for illustration of principle of the present invention together with embodiment.In the accompanying drawings:
Fig. 1 illustrates the example of the SG sent by another physical channel according to the present invention;
Fig. 2 illustrates the example of the SG sent by another radio network according to the present invention;
Fig. 3 illustrates the example of the SG sent by interactive channel according to the present invention;
Fig. 4 illustrates the example according to signaling table included in traffic signaling channel of the present invention;
Fig. 5 illustrates the data burst structure according to one embodiment of the present invention;
Fig. 6 illustrates the RS frame according to one embodiment of the present invention;
Fig. 7 illustrates the header structure of each M/H transmission package in RS frame;
Fig. 8 illustrates according to the exemplary M/H frame structure for receiving and send mobile service data of the present invention;
Fig. 9 illustrates the data transmission structure for mobile service according to one embodiment of the present invention;
Figure 10 illustrates the layering signaling structure according to one embodiment of the present invention;
Figure 11 illustrates the syntactic structure of the FIC block (chunk) according to one embodiment of the present invention;
Figure 12 illustrates the syntactic structure of the FIC block header according to one embodiment of the present invention;
Figure 13 illustrates the syntactic structure of the FIC block payload according to one embodiment of the present invention;
Figure 14 illustrates the syntactic structure of FIC section (segment) header according to one embodiment of the present invention;
Figure 15 illustrates the syntactic structure of the business mapping table (SMT) according to one embodiment of the present invention;
Figure 16 illustrates the syntactic structure of guide access list (GAT) section (section) according to one embodiment of the present invention;
Figure 17 illustrates the exemplary implication of each SG_delivery_network_type field value of Figure 16;
Figure 18 illustrates when SG_delivery_network_type field value equals " 0x00 ", according to the syntactic structure of SG guidance information SG_bootstrap_data () of one embodiment of the present invention;
Figure 19 illustrates when SG_delivery_network_type field value equals " 0x0l ", according to the syntactic structure of SG guidance information SG_bootstrap_data () of one embodiment of the present invention;
Figure 20 illustrates when SG_delivery_network_type field value equals " 0x02 ", according to the syntactic structure of SG guidance information SG_bootstrap_data () of one embodiment of the present invention;
Figure 21 illustrates when SG_delivery_network_type field value equals " 0x03 ", according to the syntactic structure of SG guidance information SG_bootstrap_data () of one embodiment of the present invention;
Figure 22 and Figure 23 illustrates the flow chart of the treatment step that display guides according to the execution business guide of one embodiment of the present invention; And
Figure 24 illustrates the block diagram of display according to the structure of the receiving system of one embodiment of the present invention.
Embodiment
To describe the preferred embodiment of the present invention in detail now, accompanying drawing shows its example.Identical label will be used as far as possible to refer to same or analogous parts at whole accompanying drawing.In addition, although the term used in the present invention is all be selected from known and public term, but applicant have selected some terms mentioned in specification of the present invention according to his or she consideration, and the detailed meanings of the relevant portion in the specification of the application to these terms has made explanation.In addition, the present invention understood in the term that can not use simply by reality, but need to understand the present invention by meaning inherent in each term.
In term used in the description of the present invention, " main business data " correspond to by the data of fixed reception system acceptance, and can comprise audio/video (A/V) data.More particularly, main business data can comprise the A/V data of high definition (HD) or SD (SD) grade, and can comprise the different types of data needed for data broadcast.In addition, " given data " corresponds to the data predicted according to the agreement reached in advance between receiving system and transmitting system.
In addition, in term used in the present invention, " M/H " (or MH) corresponds to " mobile (mobile) " and the initial of " hand-held (handheld) ", and represents the concept contrary with fixed system.In addition, M/H business datum can comprise at least one in mobile service data and hand-held business datum, and by it referred to as " mobile service data ".Here, mobile service data not only corresponds to M/H business datum, but also can comprise the business datum of any type with mobile or portable characteristics.Therefore, mobile service data according to the present invention is not limited only to M/H business datum.In addition, for simplicity, " data needed for mobile service " according to the present invention are also referred to as " mobile service data ".
Above-mentioned mobile service data may correspond to the data in having the such as information such as program execution files, securities information, and may correspond in A/V data.The most specifically, mobile service data may correspond to the A/V data in having more low resolution and high low data rate compared with main business data.Such as, if correspond to MPEG-2 codec for the A/V codec of traditional main business, then there is the A/V codec that the MPEG-4 advanced video coding (AVC) of better picture compression efficiency or scalable video coding (SVC) can be used as mobile service.In addition, the data of any type can be sent as mobile service data.Such as, transport protocol expert group (TPEG) data being used for broadcasting real-time Transmission information can be sent as main business data.
In addition, the data service of mobile service data is used to comprise weather forecast service, traffic-information service, securities information services, spectators participate in information please, real-time vote and investigation, mutual education broadcast program, game services, story of a play or opera outline about soap opera or serial is provided, personage, the service of the information in background music and shooting place, for providing the service of information about past match mark and player's brief introduction and achievement, and for providing about according to business, medium, time and theme and the service making it possible to process the product information of purchase order and the information of program of classifying.In this article, the present invention is not limited in above-mentioned business.In the present invention, transmitting system provides the backwards compatibility of main business data, can receive main business data to make conventional receiver system.In this article, main business data and mobile service data are multiplexed into Same Physical channel, then send.
In the present invention, transmitting system provides the backwards compatibility of main business data, can receive main business data to make conventional receiver system.In this article, main business data and mobile service data are multiplexed into Same Physical channel, then send.
In addition, transmitting system according to the present invention performs additional code to mobile service data and inserts receiving system and the known data (such as, given data) of transmitting system, thus the data after transmission processing.
Therefore, when using according to transmitting system of the present invention, although there is various distortion and noise in the channel, receiving system still can receive mobile service data and stably can receive mobile service data under mobile status.
Here, transmitting system corresponds to a mobile broadcast station.Further, main business data and mobile service data, by using physical channel, are sent to each receiving system (also referred to as receiver or terminal) by mobile broadcast station.More particularly, each mobile broadcast station uses 6MHz vsb transmitter, main business data is sent together with mobile service data.
Herein, by using multiple method, send the business guide (SG) for transmitting notice (announcement) information for mobile service data.
In the description of the invention, receive (or access) signaling information needed for SG to be called " business guide guidance information (service guide bootstrapping information) ".More particularly, business guide guidance information guides the information needed for SG.According to one embodiment of the present invention, business guide guidance information is informed to guide access list (GAT) by signal.
Such as, by the physical channel (that is, by same mobile broadcast) identical with corresponding mobile service data, the mobile service data of business guide (SG) and correspondence is sent together.In this case, the business guide guidance information needed for access SG is informed to the GAT being sent to physical channel by signal.
According to another embodiment of the present invention, by the physical channel that the physical channel used from sending corresponding mobile service data is different, send business guide.Such as, as shown in Figure 1, the information (such as, the schedule information about mobile service) of the business guide that market business guide provider can be collected (or arrangement) is provided by each mobile broadcast station, to construct comprehensive business guide (SG).Subsequently, market business guide provider, by independent channel (such as, 6MHz frequency band vsb transmitter), sends constructed comprehensive SG.Herein, market business guide provider maintains the physical channel (that is, physics tuned channel (PTC) frequency spectrum) for independent mobile broadcasting.Further, market business guide provider is collected and is combined the information of the business guide provided by each mobile broadcast station, thus generates comprehensive SG.Subsequently, the physical channel kept by market business guide provider, is sent to each receiving system by this comprehensive SG.In this case, the present invention, by the physical channel identical with corresponding mobile service data, sends and is provided for receiving system and can receives and the business guide guidance information processing this comprehensive SG business.More particularly, when the physical channel different by the physical channel used from sending mobile service data sends the business guide of mobile service data, can to receive making receiving system and the business guide guidance information processing corresponding business guide gives GAT, to make it possible to send business guide guidance information and corresponding mobile service data together by Same Physical channel by signal notice.
According to another embodiment of the present invention, be not send via mobile broadcast network, business guide sends by different radio networks (such as, other IP-based radio network).Such as, as shown in Figure 2, in the hybrid system that the combination by ground moving system according to the present invention and hand-held digital video broadcast satellite business (DVB-SH) system (portable for Europe (or mobile) digital satellite TV broadcasts) forms, DVB-SH operator (such as, DVB-SH service provider) can collect and the information that the business guide provided by mobile broadcast station is provided (such as, schedule information about corresponding mobile service), to carry out by DVB-SH network (that is, satellite) information sending combination to each receiving system.
Herein, the physical channel at respective broadcast station is distributed at each mobile broadcast station by using, main business data and mobile service data are sent to each receiving system.More particularly, send by mobile (M/H) radio network the broadcast singal comprising main business data and mobile service data according to the present invention.In this case, the present invention, by the physical channel identical with corresponding mobile service data, sends business guide guidance information (this business guide guidance information be provided for receiving system can receive the SG sent from different radio network also process the SG received).
More particularly, when being sent business guide (but not sending business guide by the mobile broadcast network sending corresponding mobile service data used) by other physical channel, can to receive making receiving system and the business guide guidance information processing corresponding business guide gives GAT, to make it possible to send business guide guidance information and corresponding mobile service data together by Same Physical channel by signal notice.
According to another embodiment of the present invention, send business guide by two-way (two-way or mutual) channel.Such as, as shown in Figure 3, by ground moving system and two-way channel system (such as, cellular system) composite construction hybrid system in, two-way channel SG provider (such as, operator or the business management person of two-way channel network be equipped with, as cellular network operator) can collect and combine by mobile broadcast station the information of business guide that provides (such as, schedule information about corresponding mobile service), to be sent the information of combination to each receiving system by two-way channel.Herein, the physical channel at respective broadcast station is distributed at each mobile broadcast station by using, main business data and mobile service data are sent to each receiving system.More particularly, send by mobile (M/H) radio network the broadcast singal comprising main business data and mobile service data according to the present invention.In this case, the present invention, by the physical channel identical with corresponding mobile service data, sends business guide guidance information (this business guide guidance information be provided for receiving system can receive the SG sent from two-way channel also process the SG received).More particularly, when being sent business guide by two-way channel (but not by sending the movement used of corresponding mobile service data (namely, M/H) radio network sends business guide) time, can to receive making receiving system and the business guide guidance information processing corresponding business guide gives GAT, to make it possible to send business guide guidance information and corresponding mobile service data together by Same Physical channel by signal notice.
According to one embodiment of the present invention, transmitting system and receiving system operate two kinds of dissimilar data channels: for sending the RS frame data channel of content; And fast information channel in dab receiver (FIC) data channel for obtaining business.More particularly, the present invention notifies the map information between assemblage (ensemble) and mobile service by using FIC block by signal, and FIC block can be divided into FIC segment unit and send, thus make receiving system can perform fastext acquisition.
More particularly, in transmitting system (such as, mobile broadcast station), come to pack to mobile service data (such as, A/V stream) based on real-time protocol (RTP) (RTP) method.Then, again RTP bag is packed based on User Datagram Protoco (UDP) (UDP) method.Subsequently, based on IP method then to the packing of RTP/UDP bag, thus RTP/UDP/IP bag data are packaged into.In the description of the invention, for simplicity, the RTP/UDP/IP bag data after packing are called " IP datagram " (datagram).
In addition, the business information for receiving mobile service can the form of signaling table provide.Further, based on UDP method, the traffic signaling channel sending this signaling table is packed.Further, then pack based on the UDP message of IP method to packing, thus be packaged as UDP/IP data.In the description of the invention, for simplicity, the UDP/IP bag data after packing are also referred to as IP datagram.According to one embodiment of the present invention, traffic signaling channel is packaged into the IP datagram with IP address, known destination and known destination UDP port number.
In transmitting system (such as, mobile broadcast station), form RS frame by the IP datagram of collecting mobile service data and traffic signaling channel, and by the data allocations of RS frame individual data group at the most.Subsequently, by using scheduled transmission method (such as, VSB transmission method) to modulate distributed data, thus the data after modulation are sent.According to the embodiment of the present invention, each data group comprises FIC section.The relation between RS frame and FIC section will be described in detail in process after a while.
More particularly, RS frame comprise at least one or more the IP datagram of mobile service data of a mobile service and the IP datagram for the traffic signaling channel that receives this mobile service data.
In addition, apply the concept of " assemblage " in embodiments of the present invention, to define collection of services.An assemblage (also referred to as M/H assemblage) has identical QoS, and uses same FEC code to encode.In addition, each assemblage has unique assemblage identifier (that is, assemblage id), and corresponding to having the set of the frame of RS in succession of same FEC code.Herein, each RS frame is packaged into the transmission package comprising IP stream (that is, IP datagram).In other words, RS frame corresponds to the 2-D data frame for carrying out RS-CRC coding to assemblage.
Fig. 4 illustrates the structure of the traffic signaling channel according to one embodiment of the present invention.Here, Fig. 4 shows the structure of the traffic signaling channel of the RS frame belonging to assemblage K.According to the embodiment of the present invention, in business mapping table (SMT), guide access list (GAT), cell information table (CIT), service marker table (SLT) and stepped zone table (RRT), the present invention sends at least one signaling table by traffic signaling channel, as shown in Figure 4.Here, the signaling table provided in one embodiment of the present invention is only for auxiliary understanding example of the present invention.Therefore, the present invention is not limited in the exemplary signaling table sent by traffic signaling channel.
SMT provides the signaling information of assemblage grade.In addition, each SMT provides IP visit information for each mobile service belonging to the corresponding assemblage comprising each SMT.In addition, SMT provides the IP needed for corresponding mobile service to flow Ingredient Grade information.
RRT sends about the region of program grade and the information of consultative and advisory body (consultation organ).More particularly, RRT provides commending contents rating information.
GAT provides the information about the SG provider sending business guide.In addition, GAT provides the business guide guidance information of access needed for SG.Business guide guidance information is provided for each SG provider.Further, business guide guidance information changes according to the method sending SG.Here, business guide guidance information comprises the visit information about SG, and can comprise the transport session identifier of notification channel.
CIT provides the channel information of each community (cell), and it corresponds to the frequency domain of broadcast singal.Here, " community " refers to that physically based deformation frequency affects the scope of (or effect) by transmitter under multi-frequency network (MFN) environment (or condition).More particularly, CIT provides the information of the carrier frequency about neighbor cell in Current transmitters (or transmitting system).Therefore, based on CIT information, receiver (or receiving system) can move to the overlay area of another transmitter from (or exciter) overlay area of a transmitter.
SLT provides the minimal information needed for exclusive use of scan channel process.More particularly, according to the embodiment of the present invention, be different from SMT, by SLT is used for scan channel process exclusive use, think that scan channel process constructs one group of minimal information, this can improve scan channel speed.
According to one embodiment of the present invention, each signaling table is divided at least one section.Then, each section is packaged into UDP/IP header, thus is sent by traffic signaling channel.In this case, the quantity that the UDP/IP sent by traffic signaling channel is wrapped can be changed based on the quantity of section in the quantity of the signaling table sent by traffic signaling channel and each signaling table.
Herein, the whole UDP/IP bags sent by traffic signaling channel have the known target ip address of equal number and known target UDP port number.Such as, when supposing that SMT, RRT and GAT are sent by traffic signaling channel, the target ip address and the target UDP port number that send whole UDP/IP bags of SMT, RRT and GAT are all mutually the same.In addition, target ip address and target UDP port number correspond respectively to known value, that is, the value predicted based on the agreement between receiving system and transmitting system of receiving system.
Therefore, each signaling table be included in traffic signaling data is identified by table identifier.Table identifier can be corresponding with the table_id field in the header being present in corresponding signaling table or corresponding signaling table section.Further, when needed, can identify with further reference to table_id_extension field.
Data format structures
Data burst structure and RS frame structure can be comprised according to the data structure used in the mobile broadcast technology of one embodiment of the present invention, will be described in greater detail now.
Fig. 5 illustrates the example arrangement according to data group of the present invention.Fig. 5 illustrates the example by being divided into 10 M/H blocks (that is, M/H block 1 (Bl) is to M/H block 10 (Bl0)) according to the data group of data structure of the present invention.In this example, the length of each M/H block is 16 sections.With reference to Fig. 5, latter 5 sections that only RS parity data are distributed to front 5 sections and the M/H block 10 (Bl0) of M/H block 1 (Bl).RS parity data is not comprised in the region A to D of data group.More particularly, when supposing a data group to be divided into region A, B, C and D, according to the characteristic of each M/H block in this data group, and each M/H block can be included in region A in any one in the D of region.
Here, data group is divided into the multiple regions for different purposes.More particularly, compared with there is the region of more high interference degree, can think that the region of the main business data not disturbing or have extremely low annoyance level has the receptivity of stronger resistance (or stronger).In addition, when being used in data group the system inserting and send given data (wherein, given data is known based on the agreement between transmitting system and receiving system), and when longer given data in succession periodically will be inserted in mobile service data, the given data with predetermined length periodically can be inserted in the region of not acceptor's business datum interference (that is, not being mixed with the region of main business data).But, due to the interference of main business data, be difficult to given data to be periodically inserted into the region of not acceptor's business datum interference, and be also difficult to longer given data to be in succession inserted into the region of not acceptor's business datum interference.
In data group, for simplicity, the data be included in RS frame are called " mobile service data ".RS frame data (or data of RS frame) will be described in process after a while in more detail.
Correspond to the region of not acceptor's business datum interference to M/H block 7 (B7) with reference to Fig. 5, M/H block 4 (B4).M/H block 4 (B4) in the group of data shown in Fig. 5 corresponds to the region of the interference not occurring coming autonomous traffic data to M/H block 7 (B7).In this example, longer given data sequence is all inserted in the initial sum ending of each MH block.In the description of the invention, be called comprising the region of MH block 4 (B4) to MH block 7 (B7) " region A (=B4+B5+B6+B7) ".As mentioned above, when this data group comprises the region A of the longer given data sequence with the initial sum ending being inserted in each M/H block, receiving system can carry out equilibrium by using the channel information that can obtain from this given data.Therefore, (or obtaining) the strongest equalization performance can be generated from the region of region A to region D.
In the data group example shown in Fig. 5, M/H block 3 (B3) and M/H block 8 (B8) are corresponding to having little region carrying out the interference of autonomous traffic data.Here, only longer given data sequence is inserted in one end of each M/H block B3 and B8.More particularly, owing to carrying out the interference of autonomous traffic data, insert longer given data sequence in the ending of M/H block 3 (B3), and insert another longer given data sequence in the initial of M/H block 8 (B8).In the present invention, the region comprising M/H block 3 (B3) and M/H block 8 (B8) is called " region B (=B3+B8) ".As mentioned above, when this data group comprises the region B of the longer given data sequence with the one end (initial or ending) being only inserted in each M/H block, receiving system can carry out equilibrium by using the channel information that can obtain from this given data.Therefore, compared with the C/D of region, the equalization performance that (or obtaining) is stronger can be generated.
Reference Fig. 5, M/H block 2 (B2) corresponds to M/H block 9 (B9) has the stronger region carrying out the interference of autonomous traffic data compared with the B of region.Longer given data sequence all can not be inserted in the either end of M/H block 2 (B2) and M/H block 9 (B9).In this article, the region comprising M/H block (B2) and M/H block 9 (B9) is called " region C (=B2+B9) ".Finally, in the example depicted in fig. 5, M/H block 1 (B1) corresponds to M/H block 10 (B10) and have the stronger region carrying out the interference of autonomous traffic data compared with the C of region.Similarly, longer given data sequence can not be inserted in the either end of M/H block 1 (B1) and M/H block 10 (B10).In this article, the region comprising M/H block 1 (B1) and M/H block 10 (B10) is called " region D (=B1+B10) ".Because region C/D and this given data sequence are separated by farther, therefore when channel circumstance stands frequent and unexpected change, the receptivity deterioration of region C/D can be made.
In addition, this data group comprises appointment (or distribution) the signaling information region of signaling information.In the present invention, signaling information region can from the first paragraph of 4M/H block (B4) to a part for second segment.According to the embodiment of the present invention, the signaling information region for inserting signaling information can from the first paragraph of 4M/H block (B4) to a part for second segment.More particularly, 276 (=207+69) individual byte of the 4M/H block (B4) in each data group is appointed as signaling information region.In other words, signaling information region is made up of 207 bytes of the 1st section of 4M/H block (B4) and front 69 bytes of the 2nd section.The 1st section of 4M/H block (B4) corresponds to the 17th section or the 173rd section of VSB field.
In this article, according to two kinds of dissimilar channel datas (that is, transformation parameter channel (TPC) data and fast information channel in dab receiver (FIC) data), the signaling data sent by signaling information region can be identified.
In addition, TPC data comprise the main parameter used in physical layer block.Further, because TPC data send when not interweaving, so TPC data can be visited according to slot unit in receiving system.FIC data are provided, fastext can be performed to make receiving system and obtain.Here, FIC data comprise the cross-layer information between physical layer and upper strata.FIC data interweave in units of subframe, then send.
Such as, as shown in Figure 5, when data group comprises 6 given data sequences, signaling information region is between the first given data sequence and the second given data sequence.More particularly, in last 2 sections of 3M/H block (B3), insert the first given data sequence, and insert the second given data sequence in the 2nd and the 3rd section of 4M/H block (B4).In addition, in the 4th, the 5th, the 6th and each last 2 sections of 7M/H block (B4, B5, B6 and B7), the 3rd given data sequence is inserted respectively to the 6th given data sequence.To be separated by between 1st given data sequence and the 3rd given data sequence to the 6th given data sequence 16 sections.
Fig. 6 illustrates the RS frame according to one embodiment of the present invention.
RS frame is received for each M/H frame under the condition that receiving system is switched to time slicing pattern.
RS frame according to one embodiment of the present invention is made up of multiple M/H transmission package (TP).Each M/H TP is made up of 2 byte M/H headers and (N-2) byte M/H payload.
Herein, the M/H TP comprising M/H header cannot reach N byte.In this case, other payload portions that can be corresponding M/H TP distributes byte of padding.Such as, after giving a M/H TP by traffic signaling channel allocation, the length comprising the M/H TP of M/H header is N-20 byte, byte of padding can be distributed to other 20 byte.
Fig. 7 is the figure of the example of fields illustrated according to of the present invention, the M/H Header Area distributed in M/H TP.These example of fields comprise type_indicator (type indicator) field, error_indicator (error indicator) field, stuff_indicator (padding indicator) field and pointer (pointer) field.
Type_indicator field such as can distribute 3 bits, and represents the type of the data of the payload distributed in corresponding M/H TP.
Error_indicator field such as can distribute 1 bit, and represents that whether corresponding M/H TP is wrong.Such as, if error_indicator field has value 0, then it represents inerrancy in corresponding M/H TP.If error_indicator field has value 1, then it represents wrong in corresponding M/H TP.
Stuff_indicator field such as can distribute 1 bit, and represents in the payload of corresponding M/H TP whether there is byte of padding.Such as, if stuff_indicator field has value 0, then it represents in corresponding M/H TP do not have byte of padding.If stuff_indicator field has value 1, then it represents in corresponding M/H TP to there is byte of padding.
Pointer field such as can distribute 11 bytes, and represents the positional information that in corresponding M/H TP, new data (that is, new IP datagram) starts.Such as, if the IP datagram of the IP datagram of mobile service 1 and mobile service 2 is assigned to the M/H TP in RS frame, then pointer field value represents the original position of the IP datagram of mobile service 2 in M/H TP.In addition, if do not have new data in corresponding M/H TP, then corresponding field value is exemplarily expressed as maximum.According to the embodiment of the present invention, owing to giving pointer field distribution 11 bits, so if 2047 are expressed as pointer field value, then it represents in bag do not have new data.Pointer field value be 0 point can change according to type_indicator field value and stuff_indicator field value.
Should be understood that, distribute to the order of these fields of the M/H header in M/H TP, position and implication shown in Fig. 7 and exemplarily illustrate to understand the present invention.Because those skilled in the art can easily modify, so the present invention is not limited to above-mentioned example to the order of these fields of the M/H header distributed in M/H TP, position and implication and the quantity of byte of distributing in addition.
The M/H payload of M/H TP can comprise at least one in the IP datagram of mobile service data and the IP datagram of traffic signaling channel.
More particularly, RS frame comprises the IP datagram of each mobile service data collection.In addition, the IP datagram of traffic signaling channel is included in each RS frame.According to one embodiment of the present invention, the IP datagram of traffic signaling channel comprises known IP destination-address and known destination UDP port number.Further, IP datagram is included in RS frame, with received.
The IP datagram of traffic signaling channel comprise at least one or more a signaling table.As shown in Figure 4, the IP datagram of traffic signaling channel also can comprise at least one in SMT, GAT, CIT, SLT and RRT.Herein, the IP datagram of traffic signaling channel has identical well-known IP address and identical known UDP port number.
The RS frame of Fig. 6 comprises 3 kinds of dissimilar IP datagram (that is, IP datagram 1, IP datagram 2 and IP datagram 3).And one here, in these IP datagram IP datagram corresponding to traffic signaling channel.All the other each IP datagram may correspond to the IP datagram of IP datagram in mobile service data or business guide.
In transmitting system, along column direction, RS coding is performed to RS frame, and in the row direction CRC coding is performed to RS frame.Then, the RS frame after process is distributed to the corresponding region in multiple data group, thus be sent out.In the description of the invention, for simplicity, the total data that RS frame comprises is called " mobile service data ".
Data transmission structure
Fig. 8 illustrates according to the present invention for sending and receive the structure of the M/H frame of mobile service data.In the example depicted in fig. 8, a M/H frame is made up of 5 subframes, and wherein, each subframe comprises 16 time slots.In this case, M/H frame according to the present invention comprises 5 subframes and 80 time slots.In addition, in bag grade, a time slot is made up of 156 packets (that is, transport stream packets), and in symbol level, a time slot is made up of 156 data segments.Here, the size of a time slot corresponds to the half (1/2) of VSB field.More particularly, the packet due to 207 bytes has the data volume identical with data segment, so the packet before intertexture also can be used as data segment.Herein, two VSB fields are carried out in groups, to form VSB frame.
A VSB frame is made up of 2 VSB fields (that is, odd field and even field).Here, each VSB field comprises a field synchronization segments and 312 data segments.Time slot corresponds to for for carrying out multiplexing basic time unit to mobile service data and main business data.
Here, a time slot can comprise mobile service data, or can only be made up of main business data.If front 118 packets in time slot correspond to data group, then all the other 38 data are bundled into as main business packet.In another example, when there is not data group in a slot, corresponding time slot is made up of 156 main business packets.
Meanwhile, by the data allocations in a RS frame to the Zone Full A/B/C/D in corresponding data group, or at least one in the A/B/C/D of region can be distributed to.In embodiments of the present invention, by the data allocations in a RS frame to Zone Full A/B/C/D, or at least one in region A/B and region C/D can be distributed to.If distribute mobile service data according to latter event (that is, in region A/B and region C/D), then the RS frame distributing to corresponding data group inner region A/B is different from each other with the RS frame distributing to region C/D.
According to the embodiment of the present invention, for simplicity, be called " main RS frame " by the RS frame of the region A/B distributed in corresponding data group, the RS frame distributing to corresponding data group inner region C/D will be called " auxiliary RS frame ".In addition, main RS frame and auxiliary RS frame form (or formation) queue (parade).More particularly, when by the data allocations in a RS frame to Zone Full A/B/C/D in corresponding data group time, a queue sends a RS frame.On the contrary, when by the data allocations in a RS frame at least one in region A/B and region C/D time, a queue can send maximum 2 RS frames.More particularly, it is that queue sends a RS frame that RS frame pattern indicates, or queue sends two RS frames.This RS frame pattern is sent as TPC data.Table 1 shows the example of RS frame pattern.
Table 1
Table 1 illustrates that distribution 2 bit is to indicate the example of RS frame pattern.For example, referring to table 1, when RS frame pattern value equals " 00 ", this instruction queue sends a RS frame.Further, when RS frame pattern value equals " 0l ", this instruction queue sends two RS frames, i.e. main RS frame and auxiliary RS frame.More particularly, when RS frame pattern value equals " 0l ", the data allocations of the main RS frame for region A/B is sent to the region A/B of corresponding data group.Similarly, the data allocations of the auxiliary RS frame for region C/D is sent to the region C/D of corresponding data group.
As described in join in data component, also by queue assignment for be isolated from each other as far as possible in subframe.Therefore, system can be made any burst error that may occur in subframe and responding timely and effectively.
In addition, the method for distribution queue can be applied to whole M/H frame in the same manner, or is differently applied to each M/H frame.According to the embodiment of the present invention, can for each M/H frame difference ground distribution queue, and for the whole subframes distribution queue in the same manner in M/H frame.More particularly, M/H frame structure can be that unit changes according to M/H frame.Therefore, frequently assemblage speed (ensemble rate) can be adjusted more neatly.
That is, the concept of M/H assemblage is applied to embodiments of the present invention, thus definition collection of services (or group).Each M/H assemblage has identical QoS, and uses same FEC code to encode.In addition, each M/H assemblage has identical unique identifier (that is, assemblage ID), and corresponds to RS frame in succession.In addition, assemblage has unique identifier (that is, assemblage id), and assemblage is corresponding to the set of the frame of RS in succession with same FEC code.Herein, each RS frame is packaged into the transmission package comprising IP stream.In other words, RS frame corresponds to the 2-D data frame for carrying out RS-CRC coding to assemblage.
Fig. 9 illustrates according to the data transmission structure in the physical layer of one embodiment of the present invention.More particularly, Fig. 9 illustrates and is included in each data group and the example of the FIC data be sent out.As mentioned above, the M/H frame of about 0.968 second is divided into 5 subframes, wherein, the data group corresponding to multiple assemblage is present in each subframe according to compound mode.In addition, be unit according to M/H frame to interweave to the data group corresponding to each assemblage, to construct the RS frame belonging to an assemblage.In fig .9, there are 2 assemblages (wherein, NoG=4 and NoG=3) in each subframe.In addition, the predetermined portions (such as, 37 bytes/data group) of each data group is for being conveyed through the FIC data of coding individually with RS frame data channel separation ground.The FIC region distributing to each data group is made up of a FIC section.Here, be that unit interweaves to each FIC section according to subframe.Such as, RS coding and SCCC coded treatment are applied to RS frame data, and, RS coding and PCCC coded treatment are applied to FIC data.In addition, identical with FIC data, RS coding and PCCC coded treatment are applied to TPC data.More particularly, (187+P, 187)-RS coded treatment is applied to RS frame data, (51,37)-RS coded treatment is applied to FIC data, and, (18,10)-RS coded treatment is applied to TPC.Here, P is parity check word joint number.
Layering signaling structure
Figure 10 illustrates the layering signaling structure according to one embodiment of the present invention.As shown in Figure 10, use FIC and SMT (business mapping table) Signalling method is adopted according to the mobile broadcast technology of one embodiment of the present invention.In the description of the invention, this signaling structure is called " layering signaling structure ".
More particularly, Figure 10 illustrates in IP level mobile service signaling channel, provides business to obtain the layering signaling structure of desired data by FIC block and business mapping table (SMT).
As shown in Figure 10, FIC block uses its rapid charater, so that the mapping relations between business and assemblage are sent to receiving system.More particularly, FIC block is located rapidly (or finding) can transmit the assemblage of receiving system institute requested service, thus provides the signaling data that receiving system can be made promptly can to receive the RS frame of corresponding assemblage to receiving system.
Fast information channel in dab receiver (FIC)
Adopt fast information channel in dab receiver (FIC) according to receiving system of the present invention, access the current business broadcasted with (or more promptly) more fast.
Figure 11 illustrates the syntactic structure of the FIC block being mapped the relation between mobile service and assemblage by FIC.
Here, FIC block is made up of 5 byte FIC block headers and the FIC block payload with variable-length.
Figure 12 illustrates the syntactic structure of the FIC block header according to one embodiment of the present invention.
Here, by signal, FIC block header notifies that the master agreement version of the non-back compatible in corresponding FIC block changes, is also changed by the secondary protocol version of signal notice back compatible.In addition, FIC block header also by signal notice can be changed by secondary protocol version and produce the extension length of FIC block header, the extension length of assemblage circulation header and mobile service circulation extension length.
According to one embodiment of the present invention, the receiver (or receiving system) that corresponding secondary protocol version can be adopted to change can process corresponding extended field, and tradition (or conventional) receiver that corresponding secondary protocol version can not be adopted to change is by using each corresponding length information to skip corresponding extended field.Such as, when receiving system can accept corresponding secondary protocol version change, direction given in corresponding extended field is known.In addition, receiving system can carry out executable operations according to direction given in corresponding extended field.
According to one embodiment of the present invention, insert added field by being included in the corresponding ending of the FIC block header of last secondary protocol version FIC block, assemblage circulation header and mobile service circulation place respectively, the secondary protocol version carried out in FIC block changes.According to one embodiment of the present invention, in what its situation in office, or when can not be represented the length of (or instruction) added field by each extension length in FIC block header, or when the specific fields in FIC block payload loses (maybe cannot find), or when the definition of the bit number or corresponding field of distributing to corresponding field changes, upgrade the master agreement version of corresponding FIC block.
In addition, by signal, FIC block header notifies whether the data of corresponding FIC block payload carry the map information between assemblage in current M/H frame and mobile service, or whether the data of corresponding FIC block payload carry the map information between assemblage in next M/H frame and mobile service.In addition, FIC block header also by signal notice for sending the transport stream ID number of the mobile service of current FIC block and the assemblage number that sent by corresponding mobile service.
Therefore, to this, FIC block header can comprise: FIC_major_protocol_version field, FIC_minor_protocol_version field, FIC_chunk_header_extension_length field, ensemble_loop_header_extension_length field, M/H_service_loop_extension_length field, current_next_indicator field, transport_stream_id field and num_ensembles field.
FIC_major_protocol_version field corresponds to 2 bit unsigned integer fields, and it represents the main release level of FIC block grammer.Key plate other change at the corresponding levels should indicate the change of non-back compatible rank.When upgrading FIC_major_protocol_version field, the tradition at first master agreement version (or conventional) receiver that can process FIC block agreement should be avoided processing this FIC block.
FIC_minor_protocol_version field corresponds to 3 bit unsigned integer fields, and it represents the subedition rank of FIC block grammer.When supposing that main release level keeps identical, the change of subedition rank should indicate the change of back compatible rank.More particularly, when upgrading FIC_minor_protocol_version field, tradition (or conventional) receiver that can process identical key plate FIC block agreement originally can process a part for FIC block.
FIC_Chunk_header_extension_length field corresponds to 3 bit unsigned integer fields, the length of the FIC block header extension byte that its mark is upgraded by the secondary protocol version of corresponding FIC block and generates.Here, by additional for extended byte (or interpolation) ending place to corresponding FIC block header.
Ensemble_header_extension_length field corresponds to 3 bit unsigned integer fields, the length of the assemblage header extension byte that its mark is upgraded by the secondary protocol version of corresponding FIC block and generates.Here, extended byte is added (or interpolation) to ending place of corresponding assemblage circulation header.
In addition, M/H_service_loop_extension_length field corresponds to 4 bit unsigned integer fields, the length of the assemblage header extension byte that its mark is upgraded by the secondary protocol version of M/H cycle of business operations and generates.Here, by additional for extended byte (or interpolation) ending place to corresponding M/H cycle of business operations.
Such as, suppose that FIC block comprises 2 assemblages (that is, assemblage 0 and assemblage 1).More particularly, suppose to send two mobile services by assemblage 0, send a mobile service by assemblage 1.Herein, when the secondary protocol version of FIC block changes, and during FIC block header extension 1 byte, FIC_chunk_header_extension_length field mark is " 00l ".In this case, 1 byte expansion field (that is, FIC_Chunk_header_extension_bytes field) is added to ending place of FIC block header.In addition, traditional receivers skips this 1 byte expansion field being added on ending place of FIC block header, and does not process corresponding extended field.
In addition, when the assemblage circulation header extension in FIC block during 2 byte, ensemble_loop_header_extension_length field mark is " 010 ".In this case, 2 byte expansion fields (that is, Ensemble_loop_header_extension_bytes field) are added respectively to circulate ending place of header and assemblage 1 of assemblage 0 to circulate ending place of header.In addition, traditional receivers is skipped and is added on circulate ending place of header and assemblage 1 of assemblage 0 respectively and circulates this 2 byte expansion field of ending place of header, and does not process corresponding 2 byte expansion fields.
In addition, when mobile service cyclic extensions 1 byte of FIC block, M/H_service_loop_extension_length field mark is " 00l ".In this case, ending place 1 byte expansion field (that is, M/H_service_loop_extension_bytes field) being added on respectively 2 the mobile services circulations sent by assemblage 0 circulation and ending place circulated by 1 mobile service that assemblage 1 circulates transmission.And, traditional receivers is skipped to be added on respectively and to be circulated ending place of 2 mobile services circulation sent and this 1 byte expansion field of ending place of 1 the mobile service circulation sent that circulated by assemblage 1 by assemblage 0, and does not process corresponding 1 byte expansion field.
As mentioned above, when FIC_minor_protocol version field change, tradition (or conventional) receiver (that is, the receiver that the secondary protocol version in corresponding FIC block changes can not the be adopted) field of process except extended field.Subsequently, traditional receivers uses FIC_chunk_header_extension_length field, ensemble_loop_header_extension_length field and M/H_service_loop_extension_length field, to skip corresponding extended field, and do not process corresponding field.When the receiving system using the secondary protocol version of the correspondence that can adopt FIC block to change, even use each length field to process corresponding extended field.
Current_next_indicator field corresponds to 1 bit indicator, and it indicates corresponding FIC block current when being set to " 1 " be available.Alternatively, when current_next_indicator field is set to " 0 ", current_next_indicator field indicates corresponding FIC block will be applicable to next M/H frame.Here, when current_next_indicator field is set to " 0 ", should be current available with the recent release of the current_next_indicator field and the FIC block sent that are set to " 1 ".More particularly, when current_next_indicator field value is set to " 1 ", this indicates corresponding FIC block to send the signaling data of current M/H frame.In addition, when current_next_indicator field value is set to " 0 ", this indicates corresponding FIC block to send the signaling data of next M/H frame.When reconfiguring, wherein, when assemblage in current M/H frame and the map information between mobile service are different from the map information between assemblage in next M/H frame and mobile service, M/H frame before reconfiguring is called current M/H frame, and the M/H frame after reconfiguring is called next M/H frame.
Transports_stream_id field corresponds to 16 bit unsigned integer fields, its label of broadcasting with the corresponding M/H that makes a check mark.The value of corresponding transport_stream_id field should equal the value of the transport_stream_id field be included in the Program Association Table (PAT) of the mpeg 2 transport stream that main ATSC broadcasts.
Num_ensembles field corresponds to 8 bit unsigned integer fields, and it indicates the M/H assemblage number carried by corresponding used physical transmission channel.
Figure 13 illustrates the exemplary syntax structure of the FIC block payload according to one embodiment of the present invention.For each assemblage corresponding with the num_ensembles field value in the FIC block header of Figure 12, FIC block payload comprises the configuration information of each assemblage and the information about the mobile service sent by each assemblage.
Mobile service circulation under FIC block payload is circulated by assemblage and this assemblage circulates forms.FIC block payload makes receiver can determine (or required) mobile service sent request by which assemblage.(perform this process via the mapping between ensemble_id field and M/H_service_id field.) therefore, receiver can receive the RS frame belonging to corresponding assemblage.
For this reason, the assemblage circulation of FIC block payload can comprise ensemble_id field, ensemble_protocol_version field, SLT_ensemble_indicator field, GAT_ensemble_indicator field, MH_service_signaling_channel_version field and num_M/H_services field, concentrates repeat these fields according to the number of times identical with num_ensembles field value.Mobile service circulation can comprise MH_service_id field, multi_ensemble_service field, MH_service_status field and SP_indicator field, concentrates repeat these fields according to the number of times identical with num_M/H_services field value.
Ensemble_id field corresponds to 8 bit unsigned integer fields, and it indicates the unique identifier of corresponding assemblage.Such as, can be the value in ensemble_id field distribution " 0x00 " to " 0x7F " scope.Mobile service carries out in groups with corresponding assemblage (or association) by Ensemble_id field.Here, preferably, the value of ensemble_id field is obtained by the parade_id field of (or transmission) entrained by TPC data.If send corresponding assemblage by main RS frame, then highest significant position is set to " 0 ", and all the other least significant bits are used as the parade_id field value of corresponding queue.Meanwhile, if send corresponding assemblage by auxiliary RS frame, then highest significant position is set to " 0 ", and all the other least significant bits are used as the parade_id field value of corresponding queue.
Ensemble_protocol_version field corresponds to 5 bit fields, and it specifies the version of corresponding assemblage structure.
SLT_ensemble_indicator field is 1 bit field, and whether its instruction SLT is sent to the traffic signaling channel of corresponding assemblage.Such as, when SLT_ensemble_indicator field value equals " 1 ", this can indicate SLT to be sent to traffic signaling channel.On the other hand, when SLT_ensemble_indicator field value equals " 0 ", this can indicate SLT not to be sent out.
GAT_ensemble_indicator field is also 1 bit field, and whether its instruction GAT is sent to the traffic signaling channel of corresponding assemblage.Such as, when GAT_ensemble_indicator field value equals " 1 ", this can indicate GAT to be sent to traffic signaling channel.On the other hand, when GAT_ensemble_indicator field value equals " 0 ", this can indicate GAT not to be sent out.
MH_service_signaling_channel_version field corresponds to 5 bit fields, and it indicates the version number of the traffic signaling channel of corresponding assemblage.
Num_M/H_services field corresponds to 8 bit unsigned integer fields, and it represents by movement (that is, M/H) the business number entrained by corresponding M/H assemblage.
Such as, when the secondary protocol version in FIC block header changes, and when extended field adds assemblage circulation header to, then after num_M/H_services field, corresponding extended field is and then added.According to another embodiment of the present invention, if num_M/H_services field is included in mobile service circulation, then after M/H_service_configuration_version field, and then add the corresponding extended field that will be added in assemblage circulation header.
The M/H_service_id field of mobile service circulation corresponds to 16 bit unsigned integer, and it identifies corresponding M/H business.The value of M/H_service_id field (or number) should be unique moving in (M/H) broadcast.When M/H business has composition in multiple M/H assemblage, the set of flowing corresponding to the IP of the business in each assemblage should be regarded as the separate operation for signaling object, and exception all has identical M/H_service_id field value for the entry of corresponding business in FIC.Therefore, identical M/H_service_id field value can appear in more than one num_ensembles circulation.Further, correspondingly, M/H_service_id field should represent the business of all combinations, thus keeps the uniqueness of M/H_service_id field value.
Multi_ensemble_service field is 2 bit enumerated field, it indicates, and to be corresponding mobile (M/H) business sent by (or via) assemblage, or corresponding mobile (M/H) business is sent by (or via) multiple assemblage.In addition, whether the value instruction mobile service of multi_ensemble_service field is only for the mobile service part sent by (or via) corresponding assemblage effectively (or being considered as meaning).
M/H_service_status field corresponds to 2 bit enumerated field, and it identifies the state of corresponding M/H business.Such as, the highest significant position of M/H_service_status field indicates corresponding M/H business to be activate (when being set to " 1 ") or nonactivated (when being set to " 0 ").In addition, least significant bit indicates corresponding M/H business to be hiding (when being set to " 1 ") or (when being set to " 0 ") of not hiding.
SP_indicator field corresponds to 1 bit field, and whether its indicating services protection when being set to " 1 " is applied to and provides the important of corresponding M/H business to present at least one required composition.
Such as, when the secondary protocol version of FIC block changes, and if extended field is added to mobile service circulation, then after adding extended field to SP_indicator field.
In addition, FIC block payload can comprise FIC_chunk_stuffing () field.The filling (stuffing) of FIC_chunk_stuffing () field can be there is in FIC block, align with the last FIC section boundary in the FIC section belonging to this FIC block to keep the border of FIC block.According to how many spaces remaining after resolving the whole FIC block payload before filling, determine to fill length.
Herein, FIC block is divided into multiple FIC section by transmitting system (not shown) according to the present invention, thus outputs to receiving system by dividing the FIC section obtained in units of FIC section.The size of each FIC segment unit is 37 bytes, and each FIC section is made up of 2 byte FIC section headers and 35 byte FIC section payload.More particularly, the FIC block be made up of FIC block header and FIC block payload carries out segmentation in units of 35 bytes.In addition, by adding 2 byte FIC section headers before 35 byte units of each segmentation, FIC section is constructed.
According to one embodiment of the present invention, the length of FIC block payload is variable.Here, the length of FIC block is changed according to the assemblage number sent by corresponding used physical transmission channel and the mobile service number that is included in each assemblage.
In addition, FIC block payload can comprise padding data.In this case, according to the embodiment of the present invention, padding data aligns with the last FIC section boundary in the FIC section belonging to this FIC block for FIC block.Therefore, by the length of padding data being minimized, the unnecessary waste of FIC section can be reduced.
Herein, the padding data byte number be inserted in FIC block is calculated by following formula 1.
Formula 1
Padding data byte number=35-j
J=(5+ is inserted into the signaling data byte number in FIC block payload) mod 35
Such as, when 5 byte header in FIC block with by the signaling data in the payload be inserted in this FIC block be added total length equal 205 byte time because j equals 30 in formula 1, so the payload of FIC block can comprise the padding data of 5 bytes.In addition, the length comprising the FIC block payload of padding data equals 210 bytes.Subsequently, FIC block is divided into 6 FIC sections, then sends these sections.Herein, be followed successively by from each FIC section distribution segment number 6 FIC sections that FIC block is divided into.
In addition, the FIC section be divided into from single FIC block can be sent to single subframe by the present invention, or the FIC section of division can be sent to multiple subframe.If FIC block is divided and is sent to multiple subframe, then when the data volume sent by FIC block being greater than the amount of the FIC section sent by single subframe even if (when this situation corresponds to and performing multiple business with very low bit rate), required signaling data can all be sent by FIC block.
Here, FIC segment number represents the FIC segment number in each FIC block, but not the FIC segment number in each subframe.Therefore, the subordinate relation between FIC block and subframe can be eliminated, thus reduce the excess waste of FIC section.
In addition, the present invention can add sky (null) FIC section.Regardless of the repeatedly transmission of FIC block, and when needing to fill in corresponding M/H frame, use sky FIC section to process all the other FIC sections.Such as, suppose that TNoG equals " 3 ", and FIC block is divided into 2 FIC sections.Here, when repeatedly sending FIC block by 5 subframes in single M/H frame, only send 2 FIC sections by the subframe (such as, temporally order is positioned at last subframe) in 5 subframes.In this case, be the empty FIC section of corresponding sub-frame allocation one, then send.More particularly, empty FIC section is provided for the border of FIC block and the boundary alignment of M/H frame.Herein, because empty FIC section is not the FIC section divided from FIC block, so do not distribute FIC segment number to empty FIC section.
In the present invention, when single FIC block is divided into multiple FIC section, and when the FIC section be divided into is included in each data group of at least one subframe in M/H frame, to send, from last subframe in corresponding M/H frame, distribute corresponding FIC section according to reversed sequence.According to one embodiment of the present invention, when there is empty FIC section, empty FIC section is arranged in the subframe in M/H frame, and the section making corresponding empty FIC section can be used as finally (finally) sends.
, corresponding empty FIC section need not be processed in order to make receiving system can abandon sky FIC section herein, the identification information of empty FIC section that needs can identify (or differentiation).
According to one embodiment of the present invention, the present invention uses the FIC_segment_type field in the header of empty FIC section as the identification information for identifying empty FIC section.In this embodiment, the value of the FIC_segment_type field in empty FIC section header is set to " 11 ", to identify corresponding empty FIC section.More particularly, when the FIC_segment_type field value in empty FIC section header is set to " 11 " and is sent to receiving system, the discardable FIC_segment_type field value of receiving system is set to the payload of the FIC section of " 11 ", and need not process corresponding FIC section payload.Here, value " 11 " is only conveniently easy understand the present invention and given example values.As long as reached agreement in advance between receiving system and transmitting system, then can be FIC_segment_type field and specified the arbitrary value that can identify empty FIC section.Therefore, the present invention is not limited in example set given in this article.In addition, also can use another field in FIC section header, indicate the identification information that can identify empty FIC section.
Figure 14 illustrates the exemplary syntax structure of the FIC section header according to this execution mode.
Here, FIC section header can comprise FIC_segment_type field, FIC_chunk_major_protocol_version field, current_next_indicator field, error_indicator field, FIC_segment_num field and FIC_last_segment_num field.Each field will be described as follows now.
FIC_segment_type field corresponds to 2 bit fields, and it indicates corresponding FIC section to carry a part for FIC block when being set to " 00 ".Alternatively, when FIC_segment_type field is set to " 11 ", FIC_segment_type field indicates corresponding FIC section to be the empty FIC section sending padding data.Here, its residual value is in the future application and retaining.
FIC_Chunk_major_protocol_version field corresponds to 2 bit fields, and it indicates the master agreement version of corresponding FIC block.Herein, the value of FIC_Chunk_major_protocol_version field should be identical with the value of the FIC_major_protocol_version field in corresponding FIC block header.Owing to can refer to the description of the FIC block header shown in Figure 12, so for simplicity, the detailed description to the master agreement version of FIC block grammer will be omitted.
Current_next_indicator field corresponds to 1 bit indicator, and it should indicate corresponding FIC section to carry a part for the FIC block being applicable to current M/H frame when being set to " 1 ".Alternatively, when the value of current_next_indicator field is set to " 0 ", current_next_indicator field should indicate corresponding FIC section to carry a part for the FIC block being applicable to next M/H frame.
Error_indicator field corresponds to 1 bit field, and whether its instruction occurs mistake in corresponding FIC section in transmitting procedure.Here, when an error occurs, error_indicator field is set to " 1 ".Further, when there is not (or not occurring) mistake, error_indicator field is set to " 0 ".More particularly, during the process of structure FIC section, when there is unrecovered mistake, error_indicator field is set to " 1 ".More particularly, error_indicator field makes receiving system can identify the existence (or appearance) of mistake in corresponding FIC section.
FIC_segment_num field corresponds to 4 bit unsigned integer fields, and it indicates corresponding FIC segment number.Such as, if corresponding FIC section is a FIC section of FIC block, then the value of FIC_segment_num field should be set to " 0x0 ".In addition, if corresponding FIC section is the 2nd FIC section of FIC block, then the value of FIC_segment_num field should be set to " 0x1 ".More particularly, FIC_segment_num field should increase progressively one by one along with the additional FIC section of each in FIC block.Here, if FIC block is divided into 4 FIC sections, then the FIC_segment_num field value of the last FIC section in FIC block will be indicated as " 0x3 ".
FIC_last_segment_num field correspond to 4 bit unsigned integer fields, its indicate FIC section (that is, there is the FIC section of the highest FIC_segment_num field value) last in whole FIC block number.
In conventional methods where, (or distribution) FIC segment number is specified successively for each FIC section in a subframe.Therefore, in this case, last FIC segment number matches (that is, last FIC segment number equals TNoG all the time) all the time with TNoG.But when using according to FIC distribution method of the present invention, last FIC segment number does not match with TNoG all the time.More particularly, last FIC segment number can match with TNoG, or last FIC segment number can not match with TNoG.TNoG represents that distribution (or appointment) is to the data group of single subframe sum.Such as, when TNoG equals " 6 " and FIC block is divided into 8 FIC sections, TNoG equals " 6 ", and last FIC segment number is " 8 ".
According to another embodiment of the present invention, identify empty FIC section by using the value of the FIC_segment_num field in FIC section header.More particularly, owing to not distributing FIC segment number for empty FIC section, so the FIC_segment_num field value that transmitting system is sky FIC section distributes empty data, and the FIC section that FIC_segment_num field value can be assigned with sky data by receiving system is identified as sky FIC section.Here, do not use empty data, but can by the data allocations preset by receiving system and transmitting system to FIC_segment_num field value, to replace empty data.
As mentioned above, FIC block is divided into multiple FIC section, thus is sent by single subframe or sent by multiple subframe.In addition, send the FIC section divided by single FIC block by single subframe, or, the FIC section divided by multiple single FIC block is sent by single subframe., distribute to number (that is, the FIC_seg_number value) that number to correspond in corresponding FIC block of each FIC section herein, and and do not correspond in corresponding subframe number.In addition, empty FIC section can be sent with the boundary alignment on the border and FIC block that make M/H frame.Herein, be not that empty FIC section distributes FIC segment number.
As mentioned above, send a FIC block by multiple subframe, or, send multiple FIC block by single subframe.But, according to the embodiment of the present invention, in units of subframe, FIC section interweaved and send.
Meanwhile, Figure 15 illustrates the example arrangement of the bitstream syntax of SMT section, is included in RS frame by this SMT section, then sends.Here, for simplicity, SMT section is constructed with the proprietary sector format of MPEG-2.But SMT sector data can any possible form structure.
SMT can provide the visit information of the mobile service included in the assemblage of this SMT.In addition, SMT can provide the information presented needed for mobile service.In addition, SMT can comprise at least one or more descriptor.Here, by described descriptor, other additional (or supplementing) information can be described.
Herein, the traffic signaling channel sending SMT also can comprise another signaling table (such as, GAT) except SMT.
Here, according to the embodiment of the present invention, the IP datagram of traffic signaling channel has identical IP address, known destination and identical known destination UDP port number.Therefore, by table identifier, the SMT be included in traffic signaling data is distinguished (or mark).More particularly, table identifier can be corresponding with the table_id be present in corresponding showing or in the corresponding header showing section.Further, when needed, table identifier also can with reference to table_id_extension field, to perform identifying processing.The exemplary fields that present detailed description sends by SMT section.
Table_id field is 8 table of bits identifiers, and it can be set to the identifier for identifying SMT.
Section_syntax_indicator field corresponds to the designator of the sector format of definition SMT.Such as, section_syntax_indicator field should be set to " 0 ", with " short " form indicating this table to derive from MPEG-2 proprietary sector table form (may correspond in the long format syntax of MPEG) all the time.
Private_indicator field is 1 bit field, whether its instruction SMT follows (or according to) proprietary section.
Section_length field is 12 bit fields, and it specifies the section length of all the other the SMT data bytes after following section_length field closely.
Table_id_extension field is corresponding to 16 bit fields depending on table.Here, table_id_extension field corresponds to the logical gate of the table_id field providing scope for all the other fields.Table_id_extension field comprises SMT_protocol_version field and ensemble_id field.
SMT_protocol_version field corresponds to 8 bit unsigned integer fields.Here, SMT_protocol_version field instruction protocol version, carries the parameter different from those argument structures defined in Current protocol to allow corresponding SMT in process in the future.At present, the value of SMT_protocol_version field should equal zero (0).The nonzero value of SMT_protocol_version field can the version in future of standard thus use, with tables different on indicating structure.
Ensemble_id field corresponds to 8 bit fields.Here, the ID value associated with the corresponding assemblage can distributing to ensemble_id field can in " 0x00 " to " 0x3F " scope.Preferably, the value of ensemble_id field derives from the TPC data of parade_id field.When corresponding assemblage is sent by main RS frame, highest significant position (MSB) is set to " 0 ", and all the other 7 bits are used as the parade_id field value of corresponding queue.Meanwhile, when corresponding assemblage is sent by main RS frame, highest significant position (MSB) is set to " 1 ", and all the other 7 bits are used as the parade_id field value of corresponding queue.
Version_number field corresponds to 5 bit fields, and it specifies the version number of SMT.
Current_next_indicator field corresponds to 1 bit field, and whether its instruction SMT section is current is suitable for.
Section_number field is 8 bit fields, its specify current SMT section number.
Last_section_number field correspond to 8 bit fields, its specify form corresponding SMT last section number.
Further, num_MH_services field corresponds to 8 bit fields, and it specifies the mobile service number in corresponding SMT section.
Hereinafter, the execution number of times of " for " circulation (also referred to as movement (M/H) cycle of business operations) statement equals the mobile service number corresponding with num_MH_services field, to provide the signaling information about multiple mobile service.More particularly, the signaling information of corresponding mobile service is indicated for each mobile service be included in SMT section.Here, the fields information corresponding with each mobile service can as described belowly be provided.
MH_service_id field corresponds to 16 bit unsigned integer, and it can identify the corresponding mobile service in the scope of corresponding SMT section uniquely.
Multi_ensemble_service field corresponds to 2 bit fields, and whether it indicates corresponding mobile service to be sent by one or more assemblage.Because the implication of multi_ensemble_service field is identical with the implication of the multi_ensemble_service field be included in FIC block, so for simplicity, omission is described in detail it.
MH_service_status field corresponds to 2 bit fields, and it can identify the state of corresponding mobile service.Here, MSB indicates corresponding mobile service to be activate (" 1 "), or corresponding mobile service is nonactivated (" 0 ").In addition, LSB indicates corresponding mobile service to be hiding (" 1 ") or (" 0 ") that do not hide.
SP_indicator field corresponds to 1 bit field, and it specifies the service protection state of corresponding mobile service.If SP_indicator field is set to " 1 ", then service protection is applied to and provides the meaningful of corresponding business to present at least one required composition.
Short_MH_service_name_length field corresponds to 3 bit fields, and it indicates in short_service_name field the length of the short Business Name described in units of byte length.
Short_MH_service_name field indicates the short name of corresponding mobile service.
MH_service_category field is 6 bit fields, and it identifies the classification of corresponding mobile service.
Num_components field corresponds to 5 bit fields, and it specifies the IP in corresponding mobile service to flow component number.
IP_version_flag field corresponds to 1 bit indicator, and it indicates source_IP_address field, MH_service_destination_IP_address field and component_destination_IP_address field to correspond to IPv4 address when being set to " 0 ".The value " 1 " of IP_version_flag field is retained, and corresponds to IPv6 address for indicating source_IP_address field, MH_service_destination_IP_address field and component_destination_IP_address field in the future.But, the current use not yet defining IPv6 addressing.
Source_IP_address_flag corresponds to 1 bit boolean (Boolean) mark, and it indicates the source IP address value of existence (having) corresponding business when being set up, to indicate the specific multicast in source.
MH_service_destination_IP_address_flag corresponds to 1 bit, and it indicate the IP datagram being different from MH_service_destination_IP_address field by IP address, destination to send corresponding IP stream composition when being set up.Therefore, when MH_service_destination_IP_address_flag is set up, receiving system can use component_destination_IP_address as destination_IP_address, flows composition to access corresponding IP.In addition, receiving system ignores the MH_service_destination_IP_address field in the circulation of (or abandoning) mobile service.
Source_IP_address field corresponds to 32 bit fields or 128 bit fields.When source_IP_address_flag is set to " 1 ", need to make an explanation (or analysis) to source_IP_address field.But, when source_IP_address_flag is set to " 0 ", do not need to make an explanation (or analysis) to source_IP_address field.When source_IP_address_flag is set to " 1 ", and when IP_version_flag field is set to " 0 ", corresponding field has indicated source_IP_address field and has indicated 32 bit IPv4 addresses (this IPv4 address specifies corresponding mobile service source).Alternatively, if when IP_version_flag field is set to " 1 ", then source_IP_address field specifies the 32 bit IPv6 addresses in corresponding mobile service source.
MH_service_destination_IP_address field corresponds to 32 bit fields or 128 bit fields.When MH_service_destination_IP_address_flag field is set to " 1 ", MH_service_destination_IP_address_flag needs to explain (or analysis).But when MH_service_destination_IP_address_flag is set to " 0 ", MH_service_destination_IP_address_flag does not need to explain (or analysis).Here, if MH_service_destination_IP_address_flag is set to " 1 ", and if IP_version_flag field is set to " 0 ", then the instruction of MH_service_destination_IP_address field is used for 32 IPv4 addresses, bit destination of corresponding mobile service.
Alternatively, if MH_service_destination_IP_address_flag is set to " 1 ", and if IP_version_flag field is set to " 1 ", then the instruction of MH_service_destination_IP_address field is used for 64 IPv6 addresses, bit destination of corresponding mobile service.When corresponding MH_service_destination_IP_address field cannot be explained, the component_destination_IP_address field in composition circulation should be explained.Further, in this case, receiving system should use component_destination_IP_address, flow composition to access IP.
Meanwhile, SMT according to the embodiment of the present invention provides information about multiple composition by using " for " Do statement.Hereinafter, the execution number of times of " for " circulation (also referred to as composition circulation) statement equals the component number corresponding with num_component field value, to provide the visit information about multiple composition.More particularly, the visit information of each composition be included in corresponding mobile service is provided.In this case, the fields information about each composition can be as described belowly provided.
Essential_component_indicator field is 1 bit field, and when essential_component_indicator field value is set to " 1 ", its instruction tie element is the neccessary composition of mobile service.Otherwise essential_component_indicator field instruction tie element is optional member.Such as, when Primary layer audio stream and video flowing, essential_component_indicator field value is set to " 1 ".Further, when enhancement layer video stream, essential_component_indicator field value is set to " 0 ".
Component_destination_IP_address_flag field corresponds to 1 bit Boolean denotation.When component_destination_IP_address_flag field is set to " 1 ", there is component_destination_IP_address in this instruction tie element.Port_num_count field corresponds to 6 bit fields, and its instruction and corresponding UDP/IP flow the UDP port number that composition associates.Here, UDP port number value in destination increases by 1 from destination_UDP_port_num field value.Destination_UDP_port_num field corresponds to 16 bit fields, and its instruction is used for the destination UDP port number that corresponding IP flows composition.
Component_destination_IP_address field corresponds to 32 bit fields or 128 bit fields.When IP_version_flag field is set to " 0 ", the instruction of component_destination_IP_address field is used for the 32 IPv4 addresses, bit destination that corresponding IP flows composition.In addition, when IP_version_flag field is set to " 1 ", the instruction of component_destination_IP_address field is used for the 128 IPv6 addresses, bit destination that corresponding IP flows composition.When there is this field, the destination-address carrying the IP datagram of the tie element of M/H business should with the addresses match in component_destination_IP_address field.Alternatively, when there is not this field, the destination-address carrying the IP datagram of tie element should with the addresses match in M/H_service_destination_IP_address field.The use of having ready conditions of the address version of 128 bit long of this field conveniently may use IPv6, although the current use not yet defining IPv6 in the future.
Num_component_level_descriptors field corresponds to 4 bit fields, and its instruction is provided as the descriptor counts of other additional information of classification.Composition circulation comprises the quantity component_level_descriptor () corresponding with the value of num_component_level_descriptors field, to provide additional (or supplementing) information about tie element.Num_MH_service_level_descriptors field corresponds to 4 bit fields, and its instruction provides the descriptor counts of the additional information of corresponding mobile service rank.
Mobile service circulation comprises the quantity service_level_descriptor () corresponding with the value of num_MH_service_level_descriptors field, to provide additional (or supplementing) information about mobile service.Num_ensemble_level_descriptors field corresponds to 4 bit fields, and its instruction provides the descriptor counts of the additional information of assemblage rank.In addition, assemblage circulation comprises the quantity ensemble_level_descriptor () corresponding with the value of num_ensemble_level_descriptors field, to provide additional (or supplementing) information about assemblage.
Figure 16 illustrates the bitstream syntax structure of the GAT section according to one embodiment of the present invention.Here, write GAT section according to the form of the proprietary section of MPEG-2, this is only conveniently understand the present invention.
GAT section according to the present invention is included in traffic signaling channel, thus receives.Herein, the IP datagram due to traffic signaling channel has identical well-known IP address and identical known UDP port number, so identified the GAT that traffic signaling data comprise by table identifier.More particularly, table identifier can be corresponding with the table_id field be present in corresponding showing or in the corresponding header showing section.Further, when needed, identification can be performed with further reference to table_id_extension field.
GAT section comprises business guide provider information, and comprises the business guide guidance information for each provider.
8 bit fields being used as table identifier with reference to Figure 16, table_id field.Table_id field can be set to the identifier for identifying GAT.
Section_syntax_indicator field is 1 bit field, and it corresponds to the designator of definition GAT sector format.
Private_indicator field is also 1 bit field, and which proprietary section its instruction GAT belongs to.
Section_length field is 13 bit fields, the section length of its instruction GAT.
In addition, the GAT of Figure 16 by 16 bit GAT_protocol_version field distribution to the position of table_id_extension field.Therefore, when receiving GAT by traffic signaling channel, GAT_protocol_version field can be used as the field of the table identifier that can identify GAT.More particularly, the following this protocol version of GAT_protocol_version field instruction, this protocol version is in allow corresponding GAT to carry in the future parameter that (or transmit or send) can be different from those argument structures defined in Current protocol.At present, the value of GAT_protocol_version field should equal zero (0).Further, the nonzero value of GAT_protocol_version field can the version in future of standard thus use, with tables different on indicating structure.
Version_number field is 5 bit fields, the version number of its instruction GAT.
Current_next_indicator field is 1 bit field, and whether its instruction GAT section current (or present) is suitable for.
Section_number field corresponds to 8 bit fields, and it indicates the segment number of current GAT section.
Last_section_number field corresponds to 8 bit fields, the area postrema segment number of its instruction GAT.
Num_SG_providers field indicates the quantity of the SG provider described in current GAT section.
The instruction of SG_provider_id field can identify the unique identifier of each SG provider.
Hereinafter, " for " circulation (also referred to as the circulation of SG provider) repeats the number of times identical with the value of num_SG_providers field, to provide the SG guidance information for each SG provider.Such as, fields information can be provided for each SG provider.
SG_provider_name_length field is 8 bit fields, the total length of its instruction SG_provider_name_text () field subsequently.
SG_provider_name_text () field corresponds to the field of variable-length, and it indicates the title of corresponding SG provider.Here, SG_provider_name_text () field constructs according to multiword symbol string structure.
SG_delivery_network_type field corresponds to 8 bit fields, and its instruction sends the type of SG transmission network used.Figure 17 illustrates the implication according to SG_delivery_network_type field value of the present invention.
SG_bootstrapping_data_length field is 8 bit fields, the total length of its instruction SG_bootstrap_data () field subsequently.
SG_bootstrap_data () field corresponds to the field of variable-length, and its value based on SG_delivery_network_type field provides SG guidance information, as shown in Figure 18 to Figure 21.
In addition, each SG provider, by using this descriptor, provides the additional information being applicable to each SG provider.
Another embodiment of the present invention, the SG_level_descriptors () field be included in the circulation of SG provider comprises SG_delivery_network_type field, SG_bootstrapping_data_length field and SG_bootstrap_data () field.In addition, SG_level_descriptors () also can provide SG guidance information, as shown in Figure 18 to Figure 21 based on the value of SG_delivery_network_type field.
In addition, num_additional_descriptors field corresponds to 8 bit fields, its instruction descriptor counts subsequently.Additional_descriptor () field repeated the number of times identical with num_additional_descriptors field value, and this field description can be applicable to the additional information of the whole SG providers be included in GAT section.
Such as, when the value of SG_delivery_network_type field equals " 0x00 ", broadcast to send SG by the movement (that is, M/H) identical with transmitting GAT.More particularly, being included in RS frame as single mobile service by SG and receiving, wherein, this RS frame belongs to the assemblage that GAT is sent to.
In another example, when the segment value of SG_delivery_network_type word equals " 0x0l ", broadcast to send SG by the movement (that is, M/H) different from transmitting GAT.More particularly, being included in RS frame as single mobile service by SG and receiving, wherein, this RS frame belongs to the assemblage different from the assemblage that GAT is sent to.Fig. 1 illustrates the execution mode of this example, and wherein, the service provider processing independent physical channel can collect and combine the information of the business guide provided from each broadcasting station.Subsequently, the SG of combination sends as single mobile service by the physical channel of process by this service provider.
In another example, when the value of SG_delivery_network_type field equals " 0x02 ", SG is transmitted by the IP-based broadcast channel of association, but not mobile broadcast transmits.Fig. 2 illustrates the execution mode of this example.More particularly, in the hybrid system combined by ground moving system and hand-held digital video broadcast satellite business (DVB-SH) system (portable for Europe (or mobile) digital satellite TV broadcasts), DVB-SH operator (such as, DVB-SH service provider) can collect and combine the business guide that provided by mobile broadcast station (such as, schedule information about corresponding mobile service) information, to carry out by DVB-SH network (that is, satellite) information sending combination to each receiving system.
In another example, when the value of SG_delivery_network_type field equals " 0x03 ", send SG by mutual (or two-way) channel.Fig. 3 illustrates the execution mode of this example.More particularly, by ground moving system and interactive channel system (such as, cellular system) combination form hybrid system in, (or two-way) channel SG provider (such as alternately, operator or the business management person of mutual (or two-way) channel network be equipped with, as cellular network operator) can collect and combine by mobile broadcast station the business guide that provides (such as, schedule information about corresponding mobile service) information, to be sent the information of combination to each receiving system by mutual (or two-way) channel.
Figure 18 illustrates when SG_delivery_network_type field value equals " 0x00 " (that is, when SG is transmitted by current mobile broadcast), the bitstream syntax structure of SG_bootstrap_data () field.In other words, in this example, the SG for transmitting the announcement information associated with mobile service data is included in for transmitting in the mobile broadcasting of mobile service data, and sends.
SG guidance information SG_bootstrap_data () of Figure 18 comprises 16 bit MH_Service_id fields and 16 bit announcement_channel_TSI fields.
When SG_delivery_network_type field value equals " 0x00 ", SG transmits as single mobile service.Therefore, MH_service_id field mark goes out the identifier that can identify the mobile service comprising SG data.Herein, the visit information being used for the mobile service of SG data is informed to the SMT be included in for transmitting in the mobile broadcasting of SG by signal, as shown in figure 15.More particularly, one in the multiple MH_service_id field value during the MH_service_id field value making Figure 18 and the mobile service being included in SMT circulate matches.
The transport session identifier (TSI) of announcement_channel_TSI field instruction FLUTE session, this FLUTE session is corresponding to the notification channel of mobile service comprising SG data.In other words, announcement_channel_TSI field value corresponds to the identifier that can identify the FLUTE session corresponding with notification channel uniquely.More particularly, mated by the MH_service_id field value of the MH_service_id field value with Figure 18 that make the SMT obtained from current mobile broadcast, the IP visit information (such as, destination IP address, destination UDP port number) comprising the mobile service of SG data can be obtained from SMT.In addition, by using IP visit information, IP datagram can be obtained from corresponding mobile broadcasting (that is, belonging to the RS frame of the assemblage comprising SMT and GAT).In addition, by using announcement_channel_TSI field value, ALC/LCT header can be removed from obtained IP datagram, thus access corresponding FLUTE session and receive SG data.
Figure 19 illustrates when SG_delivery_network_type field value equals " 0x01 " (, when SG transmits by being different from the mobile broadcasting of GAT), be included in the bitstream syntax structure of the SG_bootstrap_data () field in GAT.More particularly, when being sent the SG that the mobile service that sends with the mobile broadcasting by comprising GAT associates by other mobile broadcasting, the SG_bootstrap_data () field of GAT provides the guidance information of SG.
SG guidance information SG_bootstrap_data () of Figure 19 comprises 16 bit transport_stream_id fields, 16 bit MH_Service_id fields and 16 bit announcement_channel_TSI fields.When SG_delivery_network_type field value equals " 0x01 ", the instruction of transport_stream_id field can identify the label of the mobile broadcasting sending SG.
More particularly, the instruction of transports_stream_id field sends the transport stream ID of the mobile broadcasting of SG.The value of the transports_stream_id field in the header that the transport_stream_id field value of Figure 19 equals Program Map Table (PAT) and in the FIC block header of Figure 12.
In addition, when SG_delivery_network_type field value equals " 0x01 ", SG transmits as single mobile service.Therefore, MH_service_id field mark goes out the identifier that can identify the mobile service comprising SG data.Herein, the IP visit information being used for the mobile service of SG data is informed to the SMT in the mobile broadcasting (but not for transmitting the mobile broadcasting of GAT) be included in for transmitting SG by signal, as shown in figure 15.More particularly, one in the multiple MH_service_id field value during the MH_service_id field value making Figure 19 and the mobile service being included in SMT circulate matches.
The transport session identifier (TSI) of announcement_channel_TSI field instruction FLUTE session, this FLUTE session is corresponding to the notification channel of mobile service comprising SG data.
More particularly, when SG_delivery_network_type field value equals " 0x01 ", again receive the mobile broadcasting corresponding with the transport_stream_id field of Figure 19.Then, by making to match from the MH_service_id field value of SMT that obtains of mobile broadcasting received and the MH_service_id field value of Figure 19, the IP visit information (such as, destination IP address, destination UDP port number) comprising the mobile service of SG data can be obtained from SMT.In addition, by using IP visit information, IP datagram can be obtained from corresponding mobile broadcasting (that is, belonging to the RS frame of the assemblage comprising SMT).In addition, by using announcement_channel_TSI field value, after removing ALC/LCT header from obtained IP datagram, corresponding FLUTE session can be accessed and SG data can be received.
Figure 20 illustrates when SG_delivery_network_type field value equals " 0x02 " (, when SG is transmitted by other IP-based radio network), be included in the bitstream syntax structure of the SG_bootstrap_data () field in GAT.More particularly, when being sent the SG that the mobile service that sends with the mobile broadcasting by comprising GAT associates by other IP-based radio network, the SG_bootstrap_data () field of GAT provides the guidance information of SG.
SG guidance information SG_bootstrap_data () of Figure 20 comprises 1 bit IP_version_flag field, 1 bit source_IP_address_flag field, 32 bits (or 128 bits) SG_bootstrap_destination_IP_address field, 16 bit SG_bootstrap_destination_UDP_port_num fields and 16 bit announcement_channel_TSI fields.In addition, according to source_IP_address_flag field value, SG_bootstrap_data () also can comprise the SG_bootstrap_source_IP_address field of 32 bits (or 128 bits).
With reference to Figure 20, when source_IP_address_flag field value is set to " 1 ", there is the source IP address value of corresponding SG notification channel in the instruction of source_IP_address_flag field, to indicate the specific multicast in source.
When the value of IP_version_flag field is set to " 1 ", this instruction source_IP_address field and SG_bootstrap_destination_IP_address field are IPv6 addresses.Alternatively, when the value of IP_version_flag field is set to " 0 ", this instruction source_IP_address field and SG_bootstrap_destination_IP_address field are IPv4 addresses.
Source_IP_address field corresponds to 32 bits or 128 bit fields.Here, when the value of source_IP_address_flag field is set to " 1 ", source_IP_address field is significant (or Water demand).But when the value of source_IP_address_flag field is set to " 0 ", source_IP_address field becomes insignificant (or not Water demand).Here, when the value of source_IP_address_flag field is set to " 1 ", source_IP_address field 32 bits or 128 bits mark the source IP address of the whole IP datagram for sending SG notification channel.When source_IP_address_flag field value is set to " 1 ", and when IP_version_flag field value is set to " 0 ", source_IP_address field indicates 32 bit IPv4 addresses.Alternatively, when IP_version_flag field value is set to " 1 ", source_IP_address field indicates 128 bit IPv6 addresses, and it shows the source of corresponding pseudo channel.
The IP address, destination of SG_bootstrap_destination_IP_address field instruction SG notification channel.Here, when IP_version_flag field value is set to " 0 ", SG_bootstrap_destination_IP_address field indicates 32 bit IPv4 addresses.Alternatively, when IP_version_flag field value is set to " 1 ", SG_bootstrap_destination_IP_address field indicates 128 bit IPv6 addresses, and it shows the source of corresponding pseudo channel.
The destination UDP port number of SG_bootstrap_destination_UDP_port_number field instruction SG notification channel.
The transport session identifier (TSI) of announcement_channel_TSI field instruction FLUTE session, this FLUTE session corresponds to the notification channel of SG.
More particularly, by using SG_bootstrap_destination_IP_address field and the SG_bootstrap_destination_UDP_port_num field of Figure 20, IP datagram is obtained from the broadcast singal that other radio network (that is, another IP-based radio network) by sending SG receives.Then, by using announcement_channel_TSI field value, after removing ALC/LCT header from obtained IP datagram, can connect with corresponding FLUTE session, to receive SG data.
Figure 21 illustrates when SG_delivery_network_type field value equals " 0x03 " (, when SG is transmitted by mutual (or two-way) channel), be included in the bitstream syntax structure of the SG_bootstrap_data () field in GAT.More particularly, when sending the SG of the M/H business association sent with the M/H broadcast singal by comprising GAT by mutual (or two-way) channel, the SG_bootstrap_data () field of GAT provides the guidance information of SG.
SG guidance information SG_bootstrap_data () of Figure 21 comprises the SG_entrypoint_URL_text field of 8 bit SG_entrypoint_URL_text_length fields and variable-length.SG_entrypoint_URL_text_length field is the total length that unit indicates SG_entrypoint_URL_text field subsequently according to byte.SG_entrypoint_URL_text field instruction URL(uniform resource locator) (URL), this URL indicates the position of SG inlet point.More particularly, the value based on SG_entrypoint_URL_text field visits the interactive channel for sending SG, to receive SG data.
Figure 22 and Figure 23 illustrates the flow chart of the method that display guides according to the execution business guide of one embodiment of the present invention.
First, receive also demodulation and comprise movement (that is, the M/H) broadcast singal (S101) of movement (that is, the M/H) business that user selects.Then, from the mobile broadcasting of demodulation, obtain FIC section, and recover FIC block based on obtained FIC section.The map information (S102) between assemblage and mobile service is constructed by the use information be included in the FIC block of recovery.Map information between assemblage and mobile service can comprise assemblage identifier, be included in the assemblage that identified by this assemblage identifier in mobile service identifier and traffic type information etc.
In addition, comprise the RS frame of the mobile service that user selects from the mobile broadcasting structure of demodulation, and CRC decoding and RS decoding (S103) are performed to this RS frame.Subsequently, from the RS frame through CRC decoding and RS decoding, traffic signaling channel (that is, RS frame payload) (S104) is obtained.Subsequently, the GAT section (S105) be included in traffic signaling channel is extracted.More particularly, by using table identifier, extract GAT section from having in the IP datagram of identical well-known IP address with the traffic signaling channel of identical known UDP port number (such as, ip multicast stream).
Then, the SG obtained from GAT section described in GAT section provides quotient (num_SG_providers) (S106).Treatment step after step 106 is repeated the number of times providing quotient identical with obtained SG, make collection for the SG guidance information of each SG provider and access the SG that each SG provider provides.
More particularly, for each SG provider obtain corresponding SG provider name information (SG_provider_name_length, SG_provider_name_text), transmit the information (SG_delivery_network_type) of network type and information (SG_bootstrapping_data_length) (S107) about the vectoring information length of SG about sending SG SG used.
Subsequently, transmit network type information (SG_delivery_network_type) according to SG in step 107 and obtain SG guidance information, and by using the SG guidance information obtained to visit corresponding SG.
If demonstrate SG_delivery_network_type field value in step 108 to equal " 0x00 ", then as shown in figure 18, obtain from SG_bootstrap_data () transport session identifier (announcement_channel_TSI) (S109) of mobile service identifier (MH_service_id) and notification channel.
Subsequently, the SMT (Sl10) comprised in traffic signaling channel obtained at step 104 is extracted.Then, the IP visit information (S111) associated with the M/H task identifier obtained in step 109 is obtained according to the SMT extracted in step 110.Based on obtained IP visit information, be subordinated to the assemblage comprising SMT RS frame (that is, from step 103 through CRC decoding and RS decoding RS frame) acquisition ip multicast stream (S112).Then, after removing ALC/LCT header from obtained ip multicast diffluence, the FLUTE session (S113) that reception (or adding) associates with announcement_channel_TSI field, access SG data (S114).
More particularly, matched by the MH_service_id field value of the MH_service_id field value and Figure 18 that make the SMT obtained from current mobile broadcasting, the IP visit information (such as, destination IP address and destination UDP port number) comprising the mobile service of SG data is obtained from SMT.Subsequently, by using IP visit information, from corresponding mobile broadcasting (that is, belonging to the RS frame of the assemblage comprising SMT), IP datagram (that is, ip multicast stream) is obtained.Then, after removing ALC/LCT header from obtained IP datagram, corresponding FLUTE session is conducted interviews, to receive SG data by using announcement_channel_TSI field value.
Simultaneously, when demonstrating SG_delivery_network_type field value in step 108 and equaling " 0x01 ", as shown in figure 19, obtain from SG_bootstrap_data () transport session identifier (announcement_channel_TSI) (S115) of transport stream identification symbol (transport_stream_id), mobile service identifier (MH_service_id) and notification channel.Then, receive and modulate the mobile broadcasting (S116) according with (transport_stream_id) with transport stream identification and associate.Such as, the mobile broadcasting received in step 116 and the mobile broadcasting received in a step 101 have different transport stream identification symbols respectively.
Subsequently, in the mobile broadcasting of demodulation from step 116, obtain FIC section, and recover FIC block based on obtained FIC section.Then, from the FIC block recovered, the assemblage (S117) associated with the mobile broadcasting obtained in step 115 is identified.Subsequently, construct the RS frame of the mobile broadcasting belonging to institute's demodulation from step 116 and the assemblage identified, thus CRC decoding and RS decoding are performed to this RS frame.Then, from the RS frame (that is, from RS frame payload) through CRC decoding and RS decoding, traffic signaling channel is obtained, to extract the SMT (S118) be included in traffic signaling channel.More particularly, by using table identifier, extract SMT section from having in the IP datagram of identical well-known IP address with the traffic signaling channel of identical known UDP port number (such as, ip multicast stream).
Then, the IP visit information (S119) associated with the M/H task identifier obtained in step 115 is obtained in the SMT extracted from step 118.Based on obtained IP visit information, from the RS frame comprising the SMT that step 118 is extracted, obtain ip multicast stream (S120).Then, after removing ALC/LCT header from obtained ip multicast diffluence, the FLUTE session (S121) that reception (or adding) associates with announcement_channel_TSI field, thus access SG data (S122).
More particularly, after receiving the mobile broadcasting corresponding with the transport_stream_id field of Figure 19, matched by the MH_service_id field value of the MH_service_id field value and Figure 19 that make the SMT obtained from current mobile broadcasting, the IP visit information (such as, destination IP address and destination UDP port number) comprising the mobile service of SG data is obtained from SMT.Subsequently, by using IP visit information, from corresponding mobile broadcasting (that is, belonging to the RS frame of corresponding assemblage), IP datagram (that is, ip multicast stream) is obtained.Then, after removing ALC/LCT header from obtained IP datagram, corresponding FLUTE session is connected, to receive SG data by using announcement_channel_TSI field value.
Simultaneously, if demonstrate SG_delivery_network_type field value in step 108 to equal " 0x02 ", then as shown in figure 20, obtain from SG_bootstrap_data () transport session identifier (announcement_channel_TSI) (S123) of IP visit information and the notification channel guided for SG.Here, the IP visit information guided for SG comprises SG and guides IP address, destination (SG_bootstrap_destination_IP_address field) and SG to guide destination UDP port number (SG_bootstrap_destination_UDP_port_num field).The IP visit information guided for SG also can comprise SG guiding source IP address (SG_bootstrap_source_IP_address field).
When obtaining the SG guidance information of corresponding SG provider in step 123, be tuned to send another radio network of SG, to collect (or concentrating) suitable parameter (S124).Subsequently, by using these parameters, obtain ip multicast stream (S125) from this another radio network.Then, after removing ALC/LCT header from obtained ip multicast diffluence, the FLUTE session (S126) that reception (or adding) associates with announcement_channel_TSI field value, thus access SG data (S127).
More particularly, use SG_bootstrap_destination_IP_address field and the SG_bootstrap_destination_UDP_port_num field of Figure 20, IP datagram is obtained from the broadcast singal that other radio network (that is, another IP-based radio network) by sending SG receives.Then, after removing ALC/LCT header from obtained IP datagram, corresponding FLUTE session is connected, to receive SG data by using announcement_channel_TSI field value.
, equal " 0x03 " if demonstrate SG_delivery_network_type field value in step 108 meanwhile, then as shown in figure 21, from SG_bootstrap_data (), obtain the visit information (S128) being used for SG and guiding.Here, this visit information comprises SG inlet point URL (SG_entrypoint_URL field).In addition, visit (or two-way) channel (S129) alternately based on this visit information, to receive SG data (S130).When receiving SG data when the arbitrary step by performing in step 114, step 122, step 127 and step 130, after the num_SG_providers obtained in step 106 field value is subtracted " 1 " (S131), whether checking num_SG_providers field value equals " 0 " (S132).If num_SG_providers field value is not equal to " 0 ", then this processing returns to step 107, to extract the guidance information for accessing the SG sent by next SG provider, thus performs the process of access SG.Alternatively, if num_SG_providers field value equals " 0 ", then this indicates the whole SG provided by the SG provider be included in GAP section all received.Therefore, SG boot process terminates.
Receiving system
Figure 24 illustrates the execution mode according to receiving system of the present invention.In fig. 24, solid arrow represents data path, and dotted arrow represents control signal path.
Operation control 2100, tuner 2111, demodulator 2112, equalizer 2113, known sequence detector (or known data detector) 2114, block decoder 2115, main Reed-Solomon (RS) frame decoder 2116, auxiliary RS frame decoder 2117, signaling decoder 2118 and baseband controller 2119 can be comprised according to receiving system of the present invention.FIC processor 2121, Service Manager 2122, traffic signaling processor 2123 and the first memory cell 2124 also can be comprised according to receiving system of the present invention.Main RS frame buffer 2131, auxiliary RS frame buffer 2132 and transmission package (TS) processor 2133 also can be comprised according to receiving system of the present invention.Internet protocol (IP) packet processing machine 2141 also can be comprised according to receiving system of the present invention, descrambler 2142, User Datagram Protoco (UDP) (UDP) packet processing machine 2143, RTP/RTCP Real-time Transport Control Protocol (RTP/RTCP) packet processing machine 2144, NTP (Network Time Protocol) (NTP) packet processing machine 2145, service protection stream processing 2146, second memory cell 2147, asynchronous layered coding/Layered Coding Transport (ALC/LCT) stream processing 2148, extend markup language (XML) resolver 2150 and field device tool (FDT) processor 2151.Audio/video (A/V) decoder 2161, file decoder 2162, the 3rd memory cell 2163, medium wave (M/W) engine 2164 and business guide (SG) processor 2165 also can be comprised according to receiving system of the present invention.Electronic program guides (EPG) manager 2171, application manager 2172 and user interface (UI) manager 2173 also can be comprised according to receiving system of the present invention.In addition, receiving system also comprises other broadcast network interface 2001 for receiving the business guide of being sent by another radio network and mutual (or two-way) network interface 2003 for receiving the business guide of being sent by interactive channel.According to the embodiment of the present invention, Internet interface 2003 constructs the interface with the IP-based Internet, and has nothing to do with physical medium (such as, wireless or optical medium).
Here, in order to make description of the invention succinct, operation control 2100, tuner 2111, demodulator 2112, equalizer 2113, known sequence detector (or known data detector) 2114, block decoder 2115, main RS frame decoder 2116, auxiliary RS frame decoder 2117, signaling decoder 2118 and baseband controller 2119 are referred to as baseband processor 2110.FIC processor 2121, Service Manager 2122, traffic signaling processor 2123 and the first memory cell 2124 are referred to as service duplexer 2120.Main RS frame buffer 2131, auxiliary RS frame buffer 2132 and TS processor 2133 are referred to as IP adaptation module 2130.IP datagram processor 2141, descrambler 2142, UDP datagram processor 2143, RTP/RTCP packet processing machine 2144, NTP packet processing machine 2145, service protection stream processing 2146, second memory cell 2147, ALC/LCT stream processing 2148, XML analyzer 2150 and FDT processor 2151 are referred to as public IP module 2140.A/V decoder 2161, file decoder 2162, the 3rd memory cell 2163, M/W engine 2164 and SG processor 2165 are referred to as application module 2160.
In addition, although the term used in Figure 24 is selected from known and Essential Terms, but, part term applicant mentioned in the description of Figure 24 selects according to his or she consideration, and the detailed meanings of the relevant portion in this paper specification to these terms has made explanation.In addition, the present invention understood in the term that can not use simply by reality, but need to understand the present invention by meaning inherent in each term.
With reference to Figure 24, the operation of baseband controller 2119 to the modules be included in baseband processor 2110 controls.
Tuner 2111 is by being tuned to particular physical channel frequency (or used physical transmission channel frequency by receiving system, PTC), receiving system is made can to receive main business data (corresponding with the broadcast singal for fixed broadcast receiver system) and mobile service data (corresponding with the broadcast singal for mobile broadcast receiving system).Herein, by be tuned to the frequency of particular physical channel to downconverting to intermediate frequency (IF) signal, thus output it to demodulator 2112 and known sequence detector 2114.
Herein, tuner 2111 can receive main business data and mobile service data, or tuner 2111 can receive the business guide that associates with mobile service data or receive the business guide data organized mobile service data with another and associate.
More particularly, for the business guide for the relevant announcement information of the mobile service data transmitted be included in the mobile broadcasting that is currently received, receive this business guide by this business guide being included in mobile broadcasting, or receive this business guide by the mobile broadcasting of another physical channel.In this case, by the tuner 2111 of baseband processing unit 2110 based on the control of Service Manager 2122 and/or operation control 2100, receive and process this business guide.In addition, this business guide is sent by different radio networks.Further, by the control of other broadcast network interface 2001 based on Service Manager 2122 and/or operation control 2100, receive and process this business guide sent by another radio network.In addition, this business guide is sent by interactive channel.Further, by the control of Internet interface 2003 based on Service Manager 2122 and/or operation control 2100, receive and process this business guide sent by interactive channel.
The passband digital IF signal exported from tuner 2111 can only comprise main business data, or only comprises mobile service data, or comprises both main business data and mobile service data.
Demodulator 2112 performs from gain control, carrier auxiliary and Timed Recovery process the passband digital IF signal inputted from tuner 2111, thus IF signal is converted to baseband signal.Then, this baseband signal is exported to equalizer 2113 and known sequence detector 2114 by demodulator 2112.Demodulator 2112 uses the given data symbol sebolic addressing inputted from known sequence detector 2114 during timing and/or carrier auxiliary, thus improves demodulation performance.
Equalizer 2113 compensates the distortion being included in the signal after by demodulator 2112 demodulation and channels associated.Then, the signal after distortion compensation is exported to block decoder 2115 by equalizer 2113.Equalizer 2113, by using the given data symbol sebolic addressing inputted from known sequence detector 2114, can improve equalization performance.In addition, equalizer 2113 can receive feedback to decoded result from block decoder 2115, thus improves equalization performance.
Known sequence detector 2114 detects the given data place (or position) of being inserted by transmitting system from input/output data (that is, the data of the data before demodulation or part demodulation process).Then, the known data location information detected and the given data sequence that generates according to the positional information detected are exported to demodulator 2112, equalizer 2113 and baseband controller 2119 by known sequence detector 2114.In addition, can identify to make block decoder 2115 and carry out the mobile service data of additional code process, Buddhist monk without the main business data of any additional code process by transmitting system, this corresponding informance is exported to block decoder 2115 by known sequence detector 2114.
If carry out channel equalization and (namely the data inputing to block decoder 2115 correspond to the data after the block forecast and grid coding process having been carried out Serial Concatenated Convolutional Code (SCCC) method by transmitting system through equalizer 2113, data in RS frame, signaling data), then block decoder 2115 can perform as transmitting system against the trellis decode processed and block decoding.On the other hand, if through equalizer 2113 carried out channel equalization and the data inputing to block decoder 2115 correspond to only carried out grid coding process by transmitting system and do not carry out block forecast data (namely, main business data), then block decoder 2115 only can perform trellis decode.
Signaling decoder 2118 to input from equalizer 2113 and signaling data through channel equalization decode.The signaling data (or signaling information) supposing to input to signaling decoder 2118 corresponds to and has carried out the data after block forecast and grid coding process by transmitting system.The example of this signaling data can comprise transformation parameter channel (TPC) data and fast information channel in dab receiver (FIC) data.
Such as, in inputted data, the recurrence turbo that signaling decoder 2118 performs Parallel Concatenated Convolutional Code (PCCC) method to the data corresponding with signaling information region decodes (regressive turbo decoding).Subsequently, signaling decoder 2118 by FIC data and TPC data with carried out returning the signaling data that turbo decodes and be separated.In addition, signaling decoder 2118 performs the RS decoding as the inverse process of transmitting system to the TPC data be separated, thus the data after process are exported to baseband controller 2119.In addition, signaling decoder 2118 is that unit performs deinterleaving to the FIC data be separated according to subframe, to perform the RS decoding as the inverse process of transmitting system to the FIC data of deinterleaving, thus the data after process is exported to FIC processor 2121.Carry out deinterleaving and RS by signaling decoder 2118 to decode and the FIC data exporting to FIC processor 2121 are that unit sends according to FIC section.
FIC processor 2121 receives FIC data from signaling decoder 2118, to extract the signaling information (that is, the map information between assemblage and mobile service) for obtaining business.For this reason, FIC processor 2121 can comprise FIC segment buffer, FIC section resolver and FIC block resolver.
FIC segment buffer cushions the FIC section group inputted in units of M/H frame from signaling decoder 2118, thus the FIC section group of buffering is exported to FIC section resolver.Subsequently, FIC section resolver extracts the header of each FIC section be stored in FIC segment buffer, to analyze extracted header.Then, based on analysis result, the payload of corresponding FIC section is exported to FIC block resolver by FIC section resolver.FIC block resolver uses the analysis result exported from FIC section resolver, to recover FIC block data structure from FIC section payload, thus analyzes the FIC block data structure received.Subsequently, FIC block resolver extracts the signaling information for obtaining business.The signaling information obtained from FIC block resolver is exported to Service Manager 2122.
Meanwhile, traffic signaling processor 2123 is by comprising traffic signaling buffer and traffic signaling resolver constructs.Further, traffic signaling processor 2123 cushions the table section (such as, SMT section, GAT section) be included in the traffic signaling channel that sends from UDP datagram processor 2143, thus analyzes and process the table section of buffering.Also the SMT information processed by traffic signaling processor 2123 and GAT information are exported to Service Manager 2122.
According to the embodiment of the present invention, traffic signaling channel for sending SMT section and GAT section is included in the corresponding RS frame according to UDP/IP packet format (having known IP destination-address and known destination UDP port number), thus receives.Therefore, in receiving system, traffic signaling channel can be obtained, and without the need to obtaining independent IP visit information.In addition, each signaling table (such as, SMT, GAT etc.) in obtained traffic signaling channel is identified by use table identifier.
SMT section provides the signaling information (comprising IP visit information) about the whole business comprised in the assemblage of this SMT section.Therefore, the IP by using the information of resolving from SMT to visit the business belonging to asked flows composition, to provide corresponding business to user.In addition, if business guide data to be included in as the mobile service notified by signal in the assemblage comprising SMT section thus receive, then SMT section provides the IP visit information of the mobile service comprising SG data.
In addition, GAT section provides and sends business guide respectively and in order to the relevant information of the SG provider accessing the business guide guidance information that SG requires.SG guidance information can change according to SG transmission method, and comprises the visit information about corresponding SG.In addition, SG guidance information also can comprise the transport session identifier of notification channel.
Service Manager 2122 is used and is included in the SG guidance information notified by signal in GAT and for each SG provider, to receive corresponding SG from any one in current RS frame, tuner 2111, other broadcast network interface 2001 and Internet interface.More particularly, based on the SG guidance information being informed GAT (extracted from the mobile broadcasting received by tuner 2111) by signal, receive from any one mobile broadcasting of corresponding mobile broadcasting, another physical channel, another radio network and interactive channel the business guide associated with this mobile broadcasting.The SG received or be exported to ALC/LCT processor 2148, or exports to SG processor 2165.
Owing to describing the process using SG guidance information to receive corresponding SG in detail with reference to Figure 16 to Figure 22, so for simplicity, omission is described in detail it.
Service Manager 2122 collects the information parsed from SMT, is then stored in the first memory cell 2124.Service Manager 2122 is mapped according to business the information extracted from SMT and instruction data format is stored in the first memory cell 2124.
That is, Service Manager 2122 uses the signaling information collected respectively from FIC processor 2121 and traffic signaling processor 2123, maps to construct business.Subsequently, Service Manager 2122 uses the business guide (SG) of collecting from business guide (SG) processor 2165, to draft program guide.Then, Service Manager 2122 controls baseband controller 2119, makes user by receiving the mobile service of (or being provided) user request with reference to business mapping and business guide.In addition, Service Manager 2122 also can control receiving system, makes program guide can be presented at going up at least partially of display screen based on the input of user.
First memory cell 2124 stores the business drafted by Service Manager 2122 and maps and business guide.In addition, based on the request from Service Manager 2122 and EPG manager 2171, the first memory cell 2124 extracts required data, then, described data is sent to Service Manager 2122 and/or EPG manager 2171.
Baseband controller 2119 receives known data location information and TPC data, thus by M/H frame time information, indicate in the queue selected, whether there is the information of data group, the positional information, power control information etc. of the given data in corresponding data group send modules in baseband processor 2110 to.TPC data will be described in detail after a while.
Meanwhile, according to the present invention, transmitting system uses RS frame according to coding units.Here, RS frame can be divided into main RS frame and auxiliary RS frame.But according to the embodiment of the present invention, the significance level based on corresponding data divides by main RS frame and auxiliary RS frame.
Main RS frame decoder 2116 receives the output of block decoder 2115, as input.Here, in embodiments, main RS frame decoder 2116 receives through the mobile service data that Reed Solomon (RS) encodes and/or cyclic redundancy check (CRC) (CRC) is encoded from block decoder 2115.Main RS frame decoder 2116 also can receive by Reed Solomon (RS) encodes and/or cyclic redundancy check (CRC) (CRC) is encoded SMT sector data, GAT sector data or SG data from block decoder 2115.
Main RS frame decoder 2116 performs the inverse process for the RS frame encoder (not shown) be included in transmitting system, thus corrects the mistake existed in main RS frame.More particularly, main RS frame decoder 2116 forms main RS frame by multiple data group is carried out into grouping, then in units of main RS frame, carries out error correction.In other words, main RS frame decoder 2116 is decoded to the main RS frame sent for actual broadcast business.The main RS frame of being decoded by main RS frame decoder 2116 is exported to main RS frame buffer 2131.Main RS frame buffer 2131 cushions main RS frame, then constructs M/H TP with each behavior unit.The M/H TP of main RS frame exports to TP processor 2133.
In addition, auxiliary RS frame decoder 2117 receives the output of block decoder 2115, as input.Here, in embodiments, auxiliary RS frame decoder 2117 receives by the mobile service data that Reed Solomon (RS) encodes and/or cyclic redundancy check (CRC) (CRC) is encoded from block decoder 2115.Auxiliary RS frame decoder 2117 also can receive by Reed Solomon (RS) encodes and/or cyclic redundancy check (CRC) (CRC) is encoded SMT sector data, GAT sector data or SG data from block decoder 2115.
Auxiliary RS frame decoder 2117 performs the inverse process for the RS frame encoder (not shown) be included in transmitting system, thus corrects the mistake existed in auxiliary RS frame.More particularly, auxiliary RS frame decoder 2117, by multiple data group is formed auxiliary RS frame in groups, then carries out error correction in units of auxiliary RS frame.In other words, auxiliary RS frame decoder 2117 is decoded to the auxiliary RS frame sent for actual broadcast business.The auxiliary RS frame of being decoded by auxiliary RS frame decoder 2117 is exported to auxiliary RS frame buffer 2132.Auxiliary RS frame buffer 2132 cushions auxiliary RS frame, then constructs M/H TP with each behavior unit.The M/H TP of auxiliary RS frame exports to TP processor 2133.
TP processor 2133 is made up of TP buffer and TP resolver.TP processor 2133 cushions the M/H TP from main RS frame buffer 2131 and the input of auxiliary RS frame buffer 2132, then extracts and analyzes each header of M/H TP of buffering, thus from each payload recovery IP datagram of corresponding M/H TP.The IP datagram of recovery is exported to IP datagram processor 2141.
IP datagram processor 2141 is made up of IP datagram buffer and IP datagram resolver.IP datagram processor 2141 cushions the IP datagram transmitted from TP processor 2133, then extracts and analyzes the header of IP datagram of buffering, thus recovering UDP datagram from the payload of corresponding IP datagram.The UDP datagram of recovery is exported to UDP datagram processor 2143.
If UDP datagram is by scrambling, then by descrambler 2142, the UDP datagram of scrambling is carried out descrambling, and the UDP datagram of descrambling is exported to UDP datagram processor 2143.Such as; when the UDP datagram in the IP datagram received is by scrambling; UDP datagram is carried out descrambling by the encryption key etc. inputted from service protection stream processing 2146 by descrambler 2142, and the UDP datagram of descrambling is exported to UDP datagram processor 2143.
UDP datagram processor 2143 is made up of UDP datagram buffer and UDP datagram resolver.UDP datagram processor 2143 cushions the UDP datagram transmitted from IP datagram processor 2141 or descrambler 2142, then extract and analyze the header of UDP datagram of buffering, thus recovering the data that sent by the payload of corresponding UDP datagram.If the data recovered are RTP/RTCP datagrams, then the data of recovery are exported to RTP/RTCP packet processing machine 2144.If the data recovered also are NTP datagrams, then the data of recovery are exported to NTP packet processing machine 2145.In addition, if the data recovered are service protection stream, then the data of recovery are exported to service protection stream processing 2146.Further, if the data recovered are ALC/LCT stream, then the data of recovery are exported to ALC/LCT stream processing 2148.In addition, when the data recovered are SMT sector data, the data of recovery are exported to traffic signaling section processor 2123.
Because SMT section or the traffic signaling channel that carries this SMT section are the IP datagram with known IP destination-address and known destination UDP port number, so, the data comprising SMT section can be exported to traffic signaling section processor 2123 by IP datagram processor 2141 and UDP datagram processor 2143, and without the need to additional information.
RTP/RTCP packet processing machine 2144 is made up of RTP/RTCP datagram buffer and RTP/RTCP datagram resolver.The data of RTP/RTCP packet processing machine 2144 to the RTP/RTCP structure exported from UDP datagram processor 2143 cushion, and then from the extracting data A/V stream of buffering, thus extracted A/V stream are exported to A/V decoder 2161.
A/V decoder 2161 uses Voice & Video decoding algorithm to decode to the audio and video stream exported from RTP/RTCP packet processing machine 2144 respectively.The Voice & Video data of decoding are exported to and presents manager 2170.Here, at least one in AC-3 decoding algorithm, MPEG 2 audio decoder algorithm, MPEG 4 audio decoder algorithm, AAC decoding algorithm, AAC+ decoding algorithm, HE AAC decoding algorithm, AAC SBR decoding algorithm, MPEG surround decoder algorithm and BSAC decoding algorithm audio decoder algorithm can be used as, at least one in MPEG 2 video decode algorithm, MPEG 4 video decode algorithm, H.264 decoding algorithm, SVC decoding algorithm and VC-1 decoding algorithm audio decoder algorithm can be used as.
NTP packet processing machine 2145 is made up of NTP datagram buffer and NTP datagram resolver.NTP packet processing machine 2145 cushions the data with NTP structure, and these data export from UDP datagram processor 2143.Then, NTP packet processing machine 2145 is from the extracting data NTP stream of buffering.Subsequently, the NTP stream of extraction is exported to A/V decoder 2161, to decode.
Service protection stream processing 2146 also can comprise service protection stream damper.Here, service protection stream processing 2146 cushions specifying the data of (or needs) for carrying out service protection, and these data export from UDP datagram processor 2143.Subsequently, service protection stream processing 2146 carries out needed for descrambling from extracted extracting data information.The information of carrying out needed for descrambling comprises key value, such as SKTM and LKTM.The information being used for descrambling is stored in the second memory cell 2147, and when needs are that the information being used for descrambling is exported to descrambler 2142.
ALC/LCT stream processing 2148 is made up of ALC/LCT stream damper and ALC/LCT stream analyzer.Further, ALC/LCT stream processing 2148 cushions the data with ALC/LCT structure, and these data export from UDP datagram processor 2143.Then, ALC/LCT stream processing 2148 analyzes header and the header extension of the ALC/LCT session of the data from buffering.Based on the header of ALC/LCT session and the analysis result of header extension, when the data being sent to ALC/LCT session correspond to XML structure, corresponding data is exported to XML analyzer 2150.Alternatively, when the data being sent to ALC/LCT session correspond to file structure, corresponding data is exported to file decoder 2162.Herein, when the data being sent to ALC/LCT session are compressions, are decompressed by the data of decompressor 2149 to compression, then output it to XML analyzer 2150 or file decoder 2162.
XML analyzer 2150 is analyzed the XML data sent by ALC/LCT session.Then, when the data analyzed correspond to the data of specifying for the business based on file, corresponding data is exported to FDT processor 2151 by XML analyzer 2150.On the other hand, if when the data analyzed correspond to the data of specifying for business guide, then corresponding data is exported to SG processor 2165 by XML analyzer 2150.FDT processor 2151 is analyzed and is processed the file description table of the Transport FLUTE protocol sent according to XML structure by ALC/LCT session.
The data that also dissecting needle is specified business guide collected by SG processor 2165, and these data send according to XML structure, thus the data of analysis are exported to Service Manager 2122.
Decoded data to having file structure and the decoding data sent by ALC/LCT session, thus are exported to middleware engine 2164 or decoded data are stored in the 3rd memory cell 2163 by file decoder 2162.Here, middleware engine 2164 compiling file structured data (that is, apply) perform the application of compiling.Subsequently, present manager 2170 by application and output device is exported in this application, such as display screen or loud speaker.According to one embodiment of the present invention, middleware engine 2164 corresponds to the middleware engine based on JAVA.
Based on user's input, EPG manager 2171 receives EPG data by Service Manager 2122 or by SG processor 2165, with the EPG data transaction that will receive to display format, thus the data of conversion is exported to and presents manager 2170.
Application manager 2172 performs the configuration management associated with the process of the application data sent according to Format Object, file format etc.In addition, based on the user command inputted by UI manager 2173, operation control 2100 pairs of Service Managers 2122, EPG manager 2171, application manager 2172 and at least one presenting in manager 2170 control, to make it possible to the function performing user's request.
UI manager 2173 sends user's input to operation control 2100 by UI.
Finally, present manager 2170 by loud speaker and/or display screen, be supplied to user by the Voice & Video data exported from A/V decoder 2161 and from least one the EPG data that EPG manager 2171 exports.
It is apparent to one skilled in the art that, under the condition not departing from the spirit or scope of the present invention, various modifications and variations can be made to the present invention.Therefore, the present invention is intended to contain and falls into these modifications of the present invention in claims and equivalency range thereof and modified example.
Pattern of the present invention
In addition, be described being used for embodiments of the present invention together with " embodiment " of specification.
Industrial applicability
According to the method for transmission of the present invention and Received signal strength and can be used on broadcast and the communications field for sending with the execution mode of the equipment of Received signal strength.
Claims (14)
1. a method for receiving broadcast signal in receivers, the method comprises the following steps:
Receive the carrying broadcast singal of Mobile data and the traffic signaling channel for transport service signaling elements, wherein, described traffic signaling element comprises the guide access elements describing the business guide SG data service appeared in mobile broadcast;
Broadcast singal described in demodulation;
Obtain the described guide access elements from described traffic signaling channel, wherein, described guide access elements comprises the business guide guidance information providing and the business guide of described business guide data is guided to necessary parameter;
Described business guide is visited by utilizing required business guide guidance information.
2. method according to claim 1, wherein, described business guide guidance information comprises business guide and transmits network type information, described business guide transmits the instruction of network type information: be the business guide fragment being transmitted described business datum by the mobile broadcast identical with transmitting described guide access elements, or transmitted the business guide fragment of described business datum by the mobile broadcast different from the described mobile broadcast transmitting described guide access elements.
3. method according to claim 1, wherein, described guide access elements comprises: about the information of the SG data service provider for source, the transmission network type of described SG data service and the visit information for described source.
4. method according to claim 1, wherein, described guide access elements comprises: the one-way transmission files of the task identifier of SG data service and the notification channel of described SG data service transmits the transport session identifier TSI of FLUTE session.
5. method according to claim 1,
Wherein, described broadcast singal transmits the signaling data being used for fastext and obtaining, and
Wherein, described signaling data comprises guide access elements and comprises information, and described guide access elements comprises information and indicates whether to send described guide access elements by described traffic signaling channel.
6. method according to claim 1, wherein, described guide access elements comprises: for the information by IP-based signaling traffic guide transmitted alternately.
7. method according to claim 6, wherein, described guide access elements comprises: the uniform resource position mark URL indicating the inlet point position of described business guide.
8., for a receiver for receiving broadcast signal in receivers, described receiver comprises:
Tuner, described tuner is for receiving the carrying broadcast singal of Mobile data and the traffic signaling channel for transport service signaling elements, wherein, described traffic signaling element comprises the guide access elements describing the business guide SG data service appeared in mobile broadcast;
Demodulator, described demodulator is used for broadcast singal described in demodulation;
First processor, described first processor is for obtaining the described guide access elements from described traffic signaling channel, wherein, described guide access elements comprises the business guide guidance information providing and the business guide of described business guide data is guided to necessary parameter;
Second processor, described second processor is used for by utilizing required business guide guidance information to visit described business guide.
9. receiver according to claim 8, wherein, described business guide guidance information comprises business guide and transmits network type information, described business guide transmits the instruction of network type information: be the business guide fragment being transmitted described business datum by the mobile broadcast identical with transmitting described guide access elements, or transmitted the business guide fragment of described business datum by the mobile broadcast different from the described mobile broadcast transmitting described guide access elements.
10. receiver according to claim 8, wherein, described guide access elements comprises: about the information of the SG data service provider for source, the transmission network type of described SG data service and the visit information for described source.
11. receivers according to claim 8, wherein, described guide access elements comprises: the one-way transmission files of the task identifier of SG data service and the notification channel of described SG data service transmits the transport session identifier TSI of FLUTE session.
12. receivers according to claim 8,
Wherein, described broadcast singal transmits the signaling data being used for fastext and obtaining, and
Wherein, described signaling data comprises guide access elements and comprises information, and described guide access elements comprises information and indicates whether to send described guide access elements by described traffic signaling channel.
13. receivers according to claim 8, wherein, described guide access elements comprises: for the information by IP-based signaling traffic guide transmitted alternately.
14. receivers according to claim 13, wherein, described guide access elements comprises: the uniform resource position mark URL indicating the inlet point position of described business guide.
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| KR101823483B1 (en) * | 2014-10-12 | 2018-01-30 | 엘지전자 주식회사 | Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method |
| CN106464834A (en) * | 2014-10-21 | 2017-02-22 | Lg 电子株式会社 | Broadcasting signal transmission device, broadcasting signal reception device, broadcasting signal transmission method, and broadcasting signal reception method |
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| EP3244626B1 (en) * | 2015-01-07 | 2021-03-24 | Sony Corporation | Reception device, reception method, transmission device, and transmission method |
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| US10142233B2 (en) | 2015-01-21 | 2018-11-27 | Lg Electronics Inc. | Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal and method for receiving broadcast signal |
| WO2016163772A2 (en) * | 2015-04-07 | 2016-10-13 | 엘지전자 주식회사 | Broadcast signal transmission apparatus, broadcast signal reception apparatus, broadcast signal transmission method, and broadcast signal reception method |
| WO2016186390A1 (en) * | 2015-05-15 | 2016-11-24 | 엘지전자 주식회사 | Broadcasting signal transmission apparatus, broadcasting signal reception apparatus, broadcasting signal transmission method, and broadcasting signal reception method |
| WO2016186407A1 (en) | 2015-05-17 | 2016-11-24 | 엘지전자(주) | Apparatus and method for transmitting or receiving broadcast signal |
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| WO2017039386A1 (en) * | 2015-09-04 | 2017-03-09 | 엘지전자(주) | Apparatus and method for transmitting or receiving broadcast signal |
| CN112866753A (en) | 2015-09-07 | 2021-05-28 | Lg 电子株式会社 | Broadcast signal transmitting apparatus and method, and broadcast signal receiving apparatus and method |
| US10594417B2 (en) | 2016-01-14 | 2020-03-17 | Lg Electronics Inc. | Apparatus and method for transmitting and receiving broadcast signal |
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- 2009-10-09 CN CN200980157580.2A patent/CN102484694B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107852516A (en) * | 2015-07-06 | 2018-03-27 | Lg电子株式会社 | Broadcast singal dispensing device, broadcast receiver, broadcast singal sending method and broadcast signal received method |
| US10638172B2 (en) | 2015-07-06 | 2020-04-28 | Lg Electronics Inc. | Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method |
| CN112019883A (en) * | 2015-07-06 | 2020-12-01 | Lg电子株式会社 | Method and apparatus for transmitting broadcast signal and method and apparatus for receiving broadcast signal |
| US11178436B2 (en) | 2015-07-06 | 2021-11-16 | Lg Electronics Inc. | Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method |
| CN112019883B (en) * | 2015-07-06 | 2022-04-22 | Lg电子株式会社 | Method and apparatus for transmitting broadcast signal and method and apparatus for receiving broadcast signal |
| CN107925491A (en) * | 2016-07-08 | 2018-04-17 | 索尼公司 | Reception device, dispensing device and data processing method |
| US11044030B2 (en) | 2016-07-08 | 2021-06-22 | Saturn Licensing Llc | Reception apparatus, transmission apparatus, and data processing method |
| US11552720B2 (en) | 2016-07-08 | 2023-01-10 | Saturn Licensing Llc | Reception apparatus, transmission apparatus, and data processing method |
| CN111786762A (en) * | 2017-02-28 | 2020-10-16 | 高通股份有限公司 | Narrow band time division duplex frame structure for narrow band communication |
| CN111786762B (en) * | 2017-02-28 | 2023-04-07 | 高通股份有限公司 | Method, apparatus, and computer readable medium for supporting narrowband time division duplex frame structures for narrowband communications |
Also Published As
| Publication number | Publication date |
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| KR101652808B1 (en) | 2016-09-01 |
| KR101701863B1 (en) | 2017-02-02 |
| KR20160102957A (en) | 2016-08-31 |
| CA2749667C (en) | 2017-01-03 |
| CN104320212B (en) | 2018-04-17 |
| CA2749667A1 (en) | 2010-09-23 |
| CN102484694B (en) | 2014-11-26 |
| KR101737852B1 (en) | 2017-05-19 |
| KR20100105314A (en) | 2010-09-29 |
| KR20170013963A (en) | 2017-02-07 |
| CN102484694A (en) | 2012-05-30 |
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