KR100711273B1 - Method, system and network entity for data transmission and reception with header protection - Google Patents

Abstract

A method, system, transmitter, and receiver are provided that define a header protection mechanism for a DVB Multi-Protocol Encapsulation (DVB MPE) section protocol used in DVB-T mobile reception. The MPE section in this case refers to a proposal to use MPE section Media Access Control (MAC) bytes 1-5 to carry real time information about time division bursts. By using header protection mechanisms with advanced forward error correction (FEC), there is a way to significantly improve mobile digital broadband data reception capabilities. Header protection used in conjunction with advanced FEC in DVB provides an advantageous solution for receiving DVB mobile burst data. All packets with an unmodulated MPE section header are injected into an array for advanced error correction such as FEC. The array has addressable storage locations for mobile digital broadband data for correction of advanced data entities through the FEC process. At the receiver, the packet is injected into a buffer. The header is identified and checked for errors by using a Cyclic Redundancy Check (CRC) on the received header data. If the CRC indicates or allows a substantially correct value, the address of the packet is extracted. Packets containing the header are injected into the array.

Description

Method, system and network entity for data transmission and reception with header protection

The present invention relates to a system, method and network entity for transmitting and receiving data over a communication link.

Services used in mobile handheld terminals require relatively low bandwidth. The estimated maximum bit rate for streaming video using enhanced compression, such as MPEG-4, is in the range of hundreds of kilobits per second (kbit / s), with one practical limit being 384 kbps obtained in a 3G environment. Some other type of service, such as file downloading, can still require quite high bandwidth. Therefore, flexibility is needed.

Broadcast has a long tradition of almost a century in the field of radio. Even in the case of TV, its origins date back to the 1930s. Broadcasting has had a profound impact around the world in providing both entertainment and information to the mass audience.

The latest stage of broadcasting is the digitization of both radio and television. Digital radio was not very well received in the market. Many people's expectations, however, are that digital TV offers new benefits and services to consumers, resulting in new revenue streams for the broadcasting industry. However, the basic concept of the TV service itself has not changed much. Rather, TV can be used as it is, even though it is suitable for digital.

Data may be stored in, for example, Section 7 "Digital Video Broadcasting (DVB) of the European Standard EN 301 192; DVB specification for data broadcasting; DVB specification for data broadcasting Formatted using a multi-protocol encapsulator according to " Encapsulated data is sent to the digital broadcast transmitter by a multi-protocol encapsulator for broadcast of the signal to the digital broadcast receiver.

It should be noted here that additional information about DVB can be found, for example, in the following European Telecommunications Standards Institute (ETSI) literature, each of which is incorporated herein by reference:

ETSI EN 300 468 "Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems"

Recent broadcast organizations have raised the need to consider the power consumption at the receiver and some efforts have been made to reduce the power consumption at the receiver. However, this has become the goal of new efforts for power-saving broadcast transmission / reception: wireless interfaces on its own. In particular, due to the demand for power savings related to mobile environments, the air interface is becoming a target of more efforts than in conventional broadcasting.

There has been one approach to introducing data error corrections for reception. However, total correction of the data is not so sufficient, because the total correction imposes too much burden on the performance of the data correction method and the implementation of the receiver apparatus. For example, a single bit error can drop out a lot of data from the reception, which puts too much correction burden on the correction method of the receiver device.

Given the many inherent limitations of broadcasting, it is desirable to avoid or mitigate these and other problems associated with prior art systems. Thus, there is a need to focus on error correction for feature portions of mobile digital broadband transmission.

Reference will now be made to the method and apparatus invented for a header protection mechanism for mobile digital broadcast transmission.

According to one embodiment of the present invention, a data transmission method is provided, and the data transmission method includes:

Disposing one or more data segments in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are perpendicular to the second directional arrangements, Placement is performed with respect to the first directional arrangements;

Adding a data structure placement indicator to at least a portion of the header of the one or more data segments;

Providing data protection encoding for at least a portion of a header of the one or more data segments;

Adding the data protection encoding to the one or more data segments; And

Transmitting the one or more data segments.

According to another embodiment of the present invention, a data receiving method is provided, and the data receiving method includes:

Receiving one or more data segments;

Identifying a header in each received data segment of the one or more received data segments;

Identifying a data protection encoding in each header of the one or more received data segments;

Checking each of the headers for an error based on the data protection encoding; And

If there is no error in the header,

Placing a received data segment associated with an error-free header in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are arranged in the second directional arrangements. Perpendicular to, the placement includes following the received data structure placement indicators in the received header.

Another embodiment of the invention provides a data transmission system, wherein the data transmission system,

At least one transmitting node for transmitting one or more data segments;

Transmitting node side means for providing data protection encoding for at least a portion of each data segment of the one or more data segments;

Transmitting node side means for adding the data protection encoding to each data segment of the one or more data segments;

At least one receiving node for receiving the one or more data segments; And

Receiving node side means for identifying said data protection encoding in each data segment of said received one or more data segments.

According to another embodiment of the present invention, a receiver is provided, and the receiver includes:

Means for receiving one or more data segments;

Means for identifying at least one header in at least one data segment of the one or more received data segments;

Means for identifying data protection encoding in at least one header of the one or more received data segments;

Means for checking at least a portion of the at least one header for errors based on the data protection encoding; And

If there is no error in the header,

Means for placing a received data segment associated with an error free header in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are arranged in the second directional arrangements; Perpendicular to, the arrangement comprises means according to received data structure placement indicators in the received header.

In some embodiments, a method and system for transmitting / receiving, a transmitting node and a receiving node for a digital broadband transmission comprising at least one data segment transmitted in a time division manner is provided. Data protection encoding is provided for the header of packets of digital wideband transmissions along with advanced data protection encoding of several packets.

Embodiments of the present invention are employed for digital broadband transmission based on bursts of packets or data segments for a mobile environment.

Advantageously, the header can be individually protected such that it can be identified, analyzed, and verified against data errors separately from other parts of the digital broadband transmission. Resources for advanced encoding for data entities that are larger than the data entities defined by the header are saved.

For a better understanding of the invention, reference is now made to the accompanying drawings, in which the scope of the invention is set forth in the appended claims.

The invention will now be described with reference to the accompanying drawings, by way of example only.

1 shows an example of an array having an advanced FEC system and time division function to which the principles of embodiments of the present invention may be applied.

2 shows another example of an array having a CRC-32 data error correction function to which the principles of embodiments of the present invention may be applied.

3 is a diagram illustrating an array having a header protection function through another CRC according to embodiments of the present invention.

4 is a diagram illustrating how an error detection / correction code is added to the distal portion of an MPE section header according to other embodiments of the present invention.

5 is a diagram showing exemplary steps involved in data transmission in accordance with embodiments of the present invention.

6 is a diagram showing exemplary steps involved in receiving data in accordance with embodiments of the present invention.

7 shows an overall configuration of a system to which the principles of embodiments of the present invention can be applied.

8 is a block diagram functionally illustrating an exemplary node in accordance with embodiments of the present invention.

Digital Video Broadcasting (DVB) provides a high bandwidth supported broadband transmission channel, where the delivery is typically broadcast, multicast, or optionally unicast. . The high bandwidth supported wideband transmission channel may provide various services to users of such systems. Appropriate data that is corrected for correct reception is important for obtaining various services. DVB provides applicable principles, preferably Terrestrial Digital Video Broadcasting (DVB-T) applies to the present invention. Alternatively, DVB suitable for the mobile environment is referred to as DVB-X in the description of this embodiment. Thus, the term transmission as used herein may refer to broadcast, multicast, or unicast, and the term data as used herein may include, but is not limited to, data encoded over the IP protocol. Do not. IP service data received via DVB-T is preferably a target of mobile reception.

Preferred embodiments of the present invention provide a method, system, transmitter and receiver that define a header protection mechanism for a DVB Multi-Protocol Encapsulation (DVB MPE) section protocol that can be used in DVB-T mobile reception. The MPE section in this case refers to a proposal to use MPE section Media Access Control (MAC) bytes 1-5 to carry real time information related to time division bursts. By using header protection mechanisms with advanced forward error correction (FEC), there is a way to significantly improve mobile digital broadband data reception capabilities. Thus, header protection used with advanced FEC in DVB presents an advantageous solution for DVB mobile burst data reception. As the advanced FEC, for example, Reed Solomon encoding is used.

According to some preferred embodiments, all packets with an unmodulated MPE section header can be injected into an advanced error correction array such as FEC. The array has addressable storage locations for mobile digital broadband data for correction of advanced data entities through the FEC process.

At the receiver where the packet is injected into the buffer, the header is identified and checked for errors by using an error detection / correction code such as, for example, a Cyclic Redundancy Check (CRC) for the received header data. If an error detection / correction code (e.g., CRC) represents a substantially correct value or is allowed, then an address is extracted and a packet containing the header is injected into the array.

Advantageously, there is little need for buffering, since only the header data needs to be buffered before loading data into the array. The header may be as small as 12 bytes, for example.

Preferably, the overall performance of the advanced FEC is improved by, for example, protecting the 12-byte MPE section header with an error detection / correction code (eg CRC). One reason for this is that it may be possible for modulated packets to be placed in the correct position within the FEC frame. Moreover, the use of memory on the receiver can be reduced. One reason for this is that there is no need to buffer the entire packet (eg, up to 4 kB) before it is likely to be placed in the FEC frame.

Some embodiments of the present invention apply the time division data transmission principle to DVB. DVB transmission systems typically provide more than 10 Mbps of bandwidth. This offers the possibility to significantly reduce the average DVB receiver power consumption by introducing a schema based on time division multiplexing (TDM). The introduced schema is referred to as time division. The concept of time division is that data is transmitted in bursts using significantly higher bandwidth compared to the bandwidth required when data is transmitted using a fixed bandwidth. Within one burst, the time Δt until the start of the next burst is indicated. Since no data of the service is transmitted between the bursts, other services may use the bandwidth otherwise allocated for the service. This makes it possible to receive bursts of the requested service while keeping the receiver active only for some time. If a constant, low bit rate is required at the mobile handheld terminal, this may be provided by buffering the received bursts.

Therefore, data is transmitted in bursts, typically short bursts, by using the large bandwidth of DVB. There is some similarity to the time division principle. The receiver can be shut off between bursts to save power. Burst data is downloaded into the buffer and applied for later use. The bursts can be repeated at intervals, in which case the time for the next burst is consequently guided by a Δt factor, for example. Advanced FEC in the system is to ensure better unmodulated packet feed through for digital broadband systems. Advantageously, by using a header protection mechanism that allows all packets with substantially correct headers to be placed in the array with advanced error correction encoding for the array, so that any predictable modulated packet is correctly positioned within the array. Can be placed in. Therefore, advanced error correction performance can be improved and the overall mobile DVB reception / transmission performance can also be improved.

Referring now to a mobile digital broadband data transmission structure in accordance with some embodiments of the present invention, the MPE section is protected by a CRC-32 code. The length of the MPE section packet can reach 4kB. The MPE section packet includes an MPE section header and an MPE section payload. The MPE section header contains 12 bytes. Assuming a single byte error for a 4kB MPE section packet, the probability that this error could be in the packet head is only 0.3% (12/4096). In contrast, the probability of having a single byte error in the MPE section payload is 99.7%. Therefore, it is very advantageous to focus on the header in reception error correction. An additional advantage is also that based on the identification information in the header, an address / location in the array can be obtained. Therefore, the correct header data and the payload are easy to place in the array. Not much stuffing data sections remain in the array because the address of the header focuses on a location within the array. This is advantageous because it alleviates the performance of the FEC process.

Some embodiments of the present invention apply the array. A two dimensional array of addressable storage locations is created and / or accessed by a transmitting node. Typically packets corresponding to data to be transmitted by the node on a particular burst basis may be loaded into a two dimensional array in a column-like arrangement. Such a packet may for example be IP packets. Thus, the content of the loaded packet occupies one or more addressable storage locations of one or more columns. Higher FEC can be calculated for each row of the two dimensional array. Thus, the receiving node, after receiving the indicators of the array, perhaps for example when receiving a mobile digital wideband transmission, generates and / or a two-dimensional array corresponding to the array created and / or accessed by the transmitting node. Or access.

In the following, examples of loading, addressing and resizing a two-dimensional array are described through several other embodiments of the present invention.

Classes of two-dimensional arrays, as noted above, may be loaded in various ways in accordance with various embodiments of the present invention. For example, in embodiments where loading may be arranged in a column-like arrangement, implementations may be made that allow only one packet (eg, IP packet) to be loaded per column.

For such embodiments, an array column and / or column size may be selected so that one column can hold a packet that is at its maximum size. If a packet loaded in one column has a size smaller than the maximum size, the remaining portion of the column may be filled with "stuff data". As a specific example, the residual portion may be filled with zeros.

The representative packet can be the maximum size, so no stuff data is added to the column in which it resides. On the other hand, the packet may have a size smaller than the maximum size, so that the stuff data is added to its column so that the combination of packet and stuff data occupies the whole column. It is also possible that one or more entire columns contain only stuff data. Such columns may be arranged before the columns containing the data, or a combination of such columns, are used, or while the columns, or a combination of the columns are in use, the columns, or of the columns. It may be arranged after the combination is used.

As another example of loading according to various embodiments in which loading may be arranged in a column-like arrangement, if the packet itself does not fully occupy the column in which the packet was loaded, then the loading of the column is to be loaded into the array. An example may be implemented to continue execution. Moreover, in the case where a packet loaded in one column cannot be completely filled in such a column, those portions which are not filled may be placed in one or more additional columns.

Such a function may, for example, allow the column to reach the last addressable element of the column (e.g., the element with the address representing the array as the highest column) in the event that a particular packet is not completely filled in one column. It can be implemented to be filled with the contents of the packet, and the remaining portion of such a packet first starts from those columns with addressable elements (e.g., elements of a column with an address representing an array, such as the lowest column), and then Can be placed in a column.

Referring to FIG. 1, mobile digital broadband transmissions such as DVB-X systems with advanced FEC and time division functions may be considered to be representative. The system according to the array 100 of FIG. 1 must process a 2M bit FEC frame on the receiver side. In FIG. 1, the representative packet 103 does not completely fill the column 101 into which the packet itself is loaded, so that the remaining portion of the column 101 is filled with portions of the packet 104. However, if packet 104 cannot be completely filled within a portion of column 101, the remaining portion of such packet is placed in column 102. The frame address value in the packet header may define the starting position for each data (MPE) packet / section 105 within this 2 Mbit FEC frame. This starting position (address) can be transmitted in the header (MAC) bytes of each data (MPE) section.

In one embodiment of the invention, only MPE packet payloads are placed in the array according to the address in the MPE packet header and the packet headers are dropped out. This means that the FEC array contains IP data packets and error detection / correction data bytes.

On the receiving node, the accuracy of each received MPE section 105 may be analyzed before the receiving node places these packets in this 2 Mbit frame for FEC calculation. The reason for this is that there must be some kind of robustness that the received packet start address information has been received correctly. If a packet is placed at an inappropriate location within a 2Mbit FEC frame, that means that the entire frame is modulated, after which the data is no longer useful to the application.

Referring now to FIG. 2, by using a solution based on DVB CRC-32, each section packet 105 (eg, up to 4 kB) is buffered before placing the section packet 105 in an FEC frame. Should be. If there is a single bit error in the section payload, the packet is still missing because there is a risk that the packet start address will be tampered with. This may mean that the place for these packets is left empty and the FEC (1024 FEC columns) should be able to correct the entire packet. This means that a lot of FEC action / correction capability is lost, because this means that such holes in the FEC frame must be repaired. This is because the probability that the header can be modulated is only 0.3%. Note that there can even be 1024 individual FEC algorithms in an FEC frame. When several packets are missing, this also means that one individual FEC algorithm (i.e. one column) has many holes to be fixed. Thus, the FEC correction capability for one FEC column 200 is significantly superior. The MPE section packet 105 in which one byte is modulated may not be placed in a frame, as in the case of CRC-32, possibly unable to guarantee that the error is at the packet start address. Thus, the place for such a packet is left empty. The dark blocks in the array 100 represent the data to be corrected by the FEC.

Referring to FIG. 3, preferably, in some embodiments for protecting the MPE section header with an additional CRC code, the accuracy of the header can be analyzed and verified separately, and the packet ( 105 may be disposed. This may be done despite the packet 105 having some error on the payload. Advantageously, the FEC correction capability is much superior because not all of the payload bytes of the MPE section 105 are modulated. In addition, erroneous bytes are split into other columns (ie, FEC column 200) in a somewhat random manner, which means that the correction capability of the individual FEC algorithms is very difficult to immediately excel. This can be seen in FIG. 3 that only one data block to be corrected by the FEC matches the FEC column 200. Thus, for example, an MPE section packet 105 where N payload bytes are modulated can still be placed in an FEC frame because the header is verified to be correct with additional CRC code. Advantageously, the FEC correction capability remains much better for one FEC column 105 and the overall FEC frame performance is much better as a result. The dark blocks in the array 100 represent the data to be corrected by the FEC, which is advantageously small.

4 is a diagram illustrating how an error detection / correction (eg, CRC) code is added to the distal portion of an MPE section header in accordance with additional embodiments of the present invention. In FIG. 4, an example of an MPE section packet 400 including an MPE section payload and an MPE section header is shown. The darkly represented block leaves some space for standardization and systems used depending on the DVB applied. In the example of FIG. 4, a CRC code is added to the end portion of the MPE section header.

Some other embodiments of FIG. 4 may be based, for example, on CRC-6 based error detection encoding requiring 6 bits from the packet header. In these additional embodiments, the code generation polynomial may have a form such as x ⁶ + x + 1 (the rest of the initial values preset all parity bits to zero). Thus, the CRC-6 code 402 is computed from the entire MPE section header (12 bytes) based on an expression such that the generated polynomial is x ⁶ + x + 1, and the initial remaining values, all zeros. . In addition, in one embodiment of the invention, a CRC-8 code may be used. In this case, the code generation polynomial is, for example, x ⁸ + x ² + 1 (if the rest of the initials are all preset to zero). In this case, eight bits are required in the header.

5 is a diagram showing exemplary steps involved in data transmission in accordance with embodiments of the present invention. In step 500, encapsulation operations are processed. MPE may be employed in some embodiments of the present invention. As also mentioned above, such an MPE may be for example a DSM-CC MPE. Information regarding MPE can be found, for example, in ETSI document TR 101 202, which is incorporated herein by reference. The transmitting node may place packets (eg IP packets), ie first loaded packets (eg IP packets), in the MPE DSM-CC sections. Next, the DSM-CC sections may be placed in MPEG-2 TS packets, for example. In the above embodiments, the first PID value may be associated with TS packets, possibly carrying data corresponding to the packets that were initially loaded and modified. In step 501, the loader of the transmitting node performs loading of the packet and loading of the array. The packet start address is supplied from the loader for generation of a header. In addition, an error detection / correction code (eg, CRC) is added to the MPE header. The array is created in step 502 to perform error detection / correction code (CRC) based header correction. The TS packets may then be transmitted over a link, such as, for example, a DVB link, in step 504. The detailed operations may be based on the detailed operations mentioned in the examples of FIGS. 1-4 for the transmitting node. A transmitting node, such as a headend (HE), may perform the steps and operations of the FIG. 5 example.

6 is a diagram showing exemplary steps involved in receiving data in accordance with embodiments of the present invention. The receiving node may perform the steps mentioned in FIG. 6. The data packet including the payload and the header is received at step 600. The header includes a packet address in the array and also includes an error correction code or other error check code, such as, for example, a CRC-6 code. In step 601, extraction for packet reception is performed. For example, the payload and header are extracted from the data flow of the received data burst of the mobile digital broadband transmission. In step 603, it is checked whether an error detection / correction code (eg, CRC) in the header is allowed. Preferably, the MPE section header containing the error detection / correction code (eg CRC-6) is checked for data error. Preferably only the header data portion of the entire section packet is checked. There is an advantage in that a large amount of buffer space can be saved because the header has a finite size and the header still retains the critical functionality and operational capability of receiving broadcast data. If no significant error occurs, the data is loaded into the receiving array at step 604. Advantageously, an address is obtained from said header for addressing data and placing data in said array. In step 605, the process also proceeds to the next received section packet. In step 606 it is checked whether the section packet processed is the last section packet. If the processed section packet is not the last section packet, the process proceeds back to extraction step 602 for the corresponding individual section packet. In step 603, if an error detection / correction code (eg, CRC) indicates an error or otherwise the header is found otherwise modulated, nothing is placed in the array. It is desirable that this happens very rarely because the size of the header is small, for example the size of the header is 12 bytes. This provides additional relief for advanced correction encoding, such as FEC, because not so large blank data holes remain in the frame for correction. In step 606, if the processed packet is the last packet, the process ends at step 607.

In some other embodiments, after termination is initiated to process the FEC from the array. When an FEC process is ready and data is sent from the array, the process also initiates reception of data, processes error detection / correction codes (eg CRCs) via the header, and places packets in the FEC array. can do.

In yet some other embodiments, encapsulation is performed at the receiving node. When receiving such a class of TS packets, the receiving node may extract the DSM-CC sections carried by these packets. The receiving node may then extract data carrier packets corresponding to the initially loaded packets and header from those DSM-CC sections.

Although DSM-CC MPE is mentioned herein via transmission and reception, it should be noted here that other MPE techniques may be employed.

Some embodiments of the present invention apply the system of FIG. End User Terminals (EUTs) preferably operate in the coverage of a digital broadband network (DBN). The EUT may be able to receive IP-based services provided by the DBN. The DBN is based on DVB, preferably DVB-X or DVB-T for mobile environments. Transmission of a DBN includes an MPE section packet with the MPE section header and the array. The transmission may be based on time division. Prior to transmission, the data is processed by the DBN. Some examples of processing are mentioned in the examples of FIGS. 1-6 above. Preferably, the DBN transmission is a wireless or mobile transmission to an EUT based on DVB-X. Thus, data can be transmitted wirelessly. Headends (HEs) including IP encapsulators perform MPE and place IP data in MPEG-TS based data containers. The HE also performs the processing mentioned in FIGS. 1-6 for the transmitting node.

Still referring to the example of FIG. 7, DVB packets generated in such a manner are transmitted over a DVB data link, preferably a mobile or wireless link. The EUT digitally receives broadcast data. The EUT performs the process mentioned in FIGS. 1-6 for the receiving node.

Referring to the example of FIG. 8, FIG. 8 is a functional block diagram of an end user terminal (EUT), alternatively referred to as a receiver or receiving node. The EUT of FIG. 8 may be used in any / all of the above example (s) for the receiving node. The EUT is a processing unit (CPU), a wideband receiver referred to as a multicarrier signal receiver capable of receiving multicarrier wideband signals, for example DVB-T signals, and a user interface ( UI). The wideband receiver and the user interface (UI) are connected with the processing unit (CPU). The user interface (UI) includes a keyboard and a display that allow the user to use the receiver. In addition, the user interface (UI) includes a speaker and a microphone for receiving and generating audio signals. The user interface (UI) may also include speech recognition functionality (not shown). Moreover, in one embodiment of the present invention, the UI may also be a graphical user interface. The processing unit (CPU) comprises a microprocessor (not shown), a memory and possibly software (SW) not shown. The software SW may be stored in a memory. The microprocessor controls the operation of the receiver based on software (SW). Such operations are mentioned in the examples of FIGS. 1-6 and are implemented by hardware (not shown). Advantageously, the memory of the EUT can be reduced by the application of small headers over bursts. Also, the power and processing power of the receiver can be saved because a small header requires very few processing steps, which is a small data block.

Still referring to FIG. 8, alternatively, middleware or software implementations may be applied (not shown). The EUT may be a hand-held device that is conveniently portable by a user. Advantageously, the EUT may be a cellular mobile phone comprising a broadcast receiver or a multicarrier signal receiver for receiving DVB-T broadcast transmission streams (this is a dashed block that is consequently a variant option as a result in FIG. 8). Is shown). Therefore, the EUT may possibly talk to service providers.

Some preferred embodied methods of implementing an error detection / correction code (eg, CRC code) in the header may be considered hardware, for example a shift register implementation. In addition, a lookup table implementation for the SW may be performed. The implementation of the CRC code is a simple way.

In another embodiment, CRC-32 is applied for the calculation for each MPE section packet but there is no need to buffer any more data in the MPE section payload. The data may be placed in memory after the MPE header is examined. Rarely, if all of the MPE packets are to be corrected to CRC-32, this means that the overall 2Mbit FEC frame is accurate and there is no need to perform the FEC algorithm at all.

Note that the size of the array and the size of the 2Mbit FEC frame as well as the size of the 12 byte MPE section header and the 1024 MPE section packet are just examples defined in the case of standardization. However, their numerical representation can vary within their respective mentioned functions and operations.

The embodied inventions can save power in a receiving device that provides a mobility embodiment of a DVB receiver. The performance of the above embodiments increases the advantages of the present invention, such as savings. For example, DVB-T or DVB-X provides an efficient and cheap way to distribute data.

Although the above description includes several specifics, these are for illustrative purposes only and should not be construed as limitations of the scope of the invention. Thus, it will be apparent to those skilled in the art that various modifications and variations can be made to the systems, methods, and entities of the present invention without departing from the spirit or scope of the invention.

Claims (18)

In the data transmission method, Disposing one or more data segments in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are perpendicular to the second directional arrangements, Placement is performed with respect to the first directional arrangements; Adding an indication to at least a portion of a header of the one or more data segments indicating an arrangement of the data segments in the data structure; Providing data protection encoding for at least a portion of a header of the data segment; Adding the data protection encoding to the data segment; And Transmitting the one or more data segments. The method of claim 1, wherein transmitting the one or more data segments comprises transmitting content of each first directional arrangement of the first directional arrangements holding the one or more data segments. How to send data. 2. The method of claim 1, wherein each data segment is a packet. 2. The method of claim 1, wherein said method of data transmission comprises adding said data protection encoding to at least a portion of a header of said one or more data segments. 2. The method of claim 1, wherein each data segment is a multi-protocol encapsulation section. 2. The method of claim 1, wherein the one or more data segments correspond to data transmitted in a single burst. 2. The method of claim 1 wherein the first directional arrangements are columns and the second directional arrangements are rows. 2. The method of claim 1 wherein the first directional arrangements are columns and the second directional arrangements are columns. The method of claim 1, wherein the data structure is an array. 2. The method of claim 1, wherein providing data protection encoding for at least a portion of the header of the one or more data segments comprises providing data protection encoding of the header. 12. The method of claim 10, wherein the data protection coding comprises cyclic redundancy coding (CRC). 2. The method of claim 1, wherein the one or more data segments comprise data protection encoding for a two-dimensional data structure in a second direction. In the data receiving method, Receiving one or more data segments; Identifying a header in each received data segment of the one or more received data segments; Identifying a data protection encoding in each header of the one or more received data segments; Checking each of the headers for an error based on the data protection encoding; And If there is no error in the header, Placing a received data segment associated with an error-free header in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are arranged in the second directional arrangements. Perpendicular to, wherein the arrangement comprises following an indication indicating the placement of the data segments in the data structure in the received header. In a data transmission system, At least one transmitting node for transmitting one or more data segments; Transmitting node side means for providing data protection encoding for at least a portion of each data segment of the one or more data segments; Transmitting node side means for adding the data protection encoding to each data segment of the one or more data segments; At least one receiving node for receiving the one or more data segments; And Receiving node side means for identifying said data protection encoding in each data segment of said received one or more data segments. The method of claim 14, wherein the data transmission system, Transmitting node side means for placing data segments in a two-dimensional data structure having first directional arrangements and second directional arrangements, the first directional arrangements being perpendicular to the second directional arrangements; The transmitting node side means being performed for the first directional arrangements; And Transmitting node side means for adding to the one or more data segments an indication indicating the placement of the data segments in the data structure. The method of claim 14, wherein the data transmission system, Receiving node side means for identifying a header in the received data segment; Receiving node side means for checking the header for errors; And Means for placing a received data segment associated with an error-free header in a two-dimensional data structure having first directional arrangements and second directional arrangements, the first directional arrangements being the second directional arrangement; Perpendicular to the directional arrangements, the arrangement further comprising receiving node side means according to indications indicating the placement of the data segments in the data structure in the received header. In the receiver, Means for receiving one or more data segments; Means for identifying at least one header in at least one data segment of the one or more received data segments; Means for identifying data protection encoding in at least one header of the one or more received data segments; Means for checking at least a portion of the at least one header for errors based on the data protection encoding; And If there is no error in the header, Means for placing a received data segment associated with an error free header in a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein the first directional arrangements are arranged in the second directional arrangements; Perpendicular to the receiver, wherein the arrangement comprises means in accordance with indications indicating an arrangement of the data segments in the data structure in the received header. In the transmitter, Means for placing one or more data segments in a two-dimensional data structure having first directional arrangements and second directional arrangements, the first directional arrangements being perpendicular to the second directional arrangements, Means for performing placement with respect to the first directional arrangements; Means for adding an indication to the at least a portion of the header of the one or more data segments indicating the placement of the data segments in the data structure; Means for providing data protection encoding for at least a portion of the header of the one or more data segments; Means for adding the data protection encoding to the one or more data segments; And Means for transmitting the one or more data segments.

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