KR101722284B1 - Method for encoding control information in broadcasting/communication system and transmission/reception apparatus and method thereof - Google Patents

Abstract

The present invention relates to a method and apparatus for coding and transmitting control information in a broadcasting / communication system, and in particular, a method for transmitting control information in a broadcast / communication system according to the present invention includes generating signaling information including a plurality of parts Determining the number of coding blocks to be coded based on the number of bits and the coding unit of the signaling information; and determining each part of the signaling information according to the determined number of coding blocks, Fragmenting the input information bits of each encoding block into at least one piece of fragmented information in each portion of the signaling information; Coded into a coded block and transmitted.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of coding control information in a broadcast / communication system, and an apparatus and a method for transmitting /

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for encoding control information in a broadcasting / communication system and transmitting / receiving the control information. More particularly, the present invention relates to a method and apparatus for transmitting control information in a broadcast / communication system using a low density parity check (LDPC) And a method and an apparatus for transmitting and receiving the control information.

1 is a diagram for explaining a frame structure used in a general broadcast / communication system. Referring to FIG. 1, reference numeral 101 denotes a structure of one frame including control information transmitted and received in a broadcasting / communication system. Typically, the frame 101 includes a preamble 102, an L1 signaling 103, and data 104. Here, the control information may be transmitted through the preamble 102 and the L1 signaling 103. L1 signaling is an abbreviation of Layer 1 signaling and can be expressed as L1 control information. In general, since Layer 1 means a physical layer, L1 signaling is also referred to as physical layer signaling and physical layer control information. 1, the data 104 is composed of one or more physical layer pipes (PLPs) 108, 109, ..., 110. Different modulation schemes and coding rates can be used independently for each PLP. In Figure 1, the preamble 102 is typically a signal used to obtain synchronizations for the time and frequency synchronization, frame boundaries of the receiver.

The L1 signaling 103 indicates a portion where the L1 signal is transmitted and includes L1 pre-information 105, L1 configurable information 106, L1 dynamic information 107 ). The L1 variable information 106 and the L1 dynamic information 107 among the L1 signaling information 103 are referred to as L1 post signaling information 120. [ Also, the 'L1 variable information' 106 may be referred to as 'configurable L1 post signaling', and the 'L1 dynamic information' 107 may be referred to as 'Dynamic L1 post signaling' It is also said. The L1 pre-information 105 includes information that is substantially unchanged in terms of time, and includes information such as a cell identifier, a network identifier, a frequency (RF) number, a frame length, and a pilot sub-carrier position. The L1 configurable information 106 includes information that is not changed every frame but can be changed once in a frame to be transmitted in the future. The L1 configurable information 106 includes, for example, a PLP identifier, a modulation scheme used for each PLP transmission, and code rate information.

In FIG. 1, the L1 dynamic information 107 includes information that can be changed every frame, and indicates the position at which each PLP that transmits service data is transmitted in the current frame, And information as to whether or not it ends in < RTI ID = 0.0 > The L1 post signaling information 120 may include information other than the L1 post variable information 106 and the dynamic information 107. [ For example, extension information and CRC (cyclic redundancy checking) and L1 padding, which are error check codes, can be included. The CRC is a well-known code "Peterson, W. W. and Brown, D. T. (January 1961). "Cyclic Codes for Error Detection ". Proceedings of the IRE 49: 228. doi: 10.1109 / JRPROC.1961.287814. &Quot;

In FIG. 1, PLP 1 108, PLP 2 109 and PLP N 110 transmit at least one broadcast service channel as service data, which is a part where actual broadcast data is transmitted, Also.

Referring to FIG. 1, a process of receiving a specific broadcast / communication service channel in a receiver of a broadcast / communication system will be described. In FIG. 1, a receiver that acquires the synchronization of the frame 101 through a preamble 102 includes L1 Information such as the manner in which data is transmitted through the signaling information 103, the frame length, and the like are obtained. And receives the corresponding broadcast data through the PLPs 108 to 110 using the obtained information.

When the control information such as the signaling information is transmitted in the broadcast / communication system as described above, the control information should be more efficiently encoded than the data information. Therefore, an efficient encoding method and decoding method for the signaling information is desired.

The present invention provides a coding method for enhancing decoding performance of control information in a broadcasting / communication system, and a method and apparatus for transmitting / receiving control information.

The present invention provides a coding method for improving decoding performance of L1 post signaling information in a broadcast / communication system, and a method and apparatus for transmitting / receiving control information.

상기 수학식에서

는 상기 CRC 필드에 대한 길이를 나타낸다.A method of transmitting control information in a broadcasting / communication system according to the present invention includes the steps of generating signaling information including a plurality of parts, Determining a number of encoding blocks to encode the signaling information in consideration of a number and a coding unit of the signaling information; fragmenting each part of the signaling information into at least one fragment according to the determined number of the encoding blocks; Comprising the steps of: constructing input information bits of each encoding block so as to include one of at least one piece fragmented in each part of the signaling information; encoding the input information bits of each encoding block in each encoding block and transmitting the input information bits; Wherein the signaling information includes L1 configurable information, L1 dynamic (dynamic) L1 dynamic information, extended field of information, the next frame of the frame; and a (cyclical redundancy check) CRC field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , ≪ / RTI >
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Indicates the length of the CRC field.

상기 수학식에서

는 상기 CRC 필드에 대한 길이를 나타낸다. An apparatus for transmitting control information in a broadcasting / communication system according to the present invention includes: an L1 signaling information generator for generating signaling information including a plurality of fragments; Determining a number of encoding blocks to encode the signaling information in consideration of the number of bits of information and an encoding unit, fragmenting each part of the signaling information into at least one fragment according to the determined number of encoding blocks, A controller configured to control input information bits of each encoding block so as to include one of at least one piece fragmented in each portion of information; and a controller configured to configure input information bits of each encoding block under the control of the controller, The input information bits of each coding block are input to each coding block And a transmitter for transmitting the encoded block,
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , ≪ / RTI >
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Indicates the length of the CRC field.

상기 수학식에서

는 상기 CRC 필드에 대한 길이를 나타낸다.A method of receiving control information in a broadcasting / communication system according to the present invention is a method of receiving control information in a broadcasting / communication system, the method comprising: receiving coding blocks of signaling information; Wherein each portion of the signaling information is fragmented into at least one fragment based on the number of encoding blocks of the signaling information and obtaining the number of bits of the signaling information; Decoding the received coded blocks based on the number of the coded blocks of the signaling information, and decoding the received coded blocks based on the number of the coded blocks of the signaling information included in the decoded coded blocks. Extracting fragmented signaling information, Comprising the step of restoring the state before it was fragmented signaling information, each of the encoded blocks containing the one of the at least one piece of fragmentation in different parts of the signaling information,
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , ≪ / RTI >
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Indicates the length of the CRC field.

상기 수학식에서

는 상기 CRC 필드에 대한 길이를 나타낸다.An apparatus for receiving control information in a broadcasting / communication system according to the present invention is an apparatus for receiving control information in a broadcasting / communication system, the apparatus comprising: a receiver for receiving coded blocks of coded signaling information; Wherein each portion of the signaling information is fragmented into at least one fragment based on the number of encoding blocks of the signaling information and is decoded to decode the received encoding blocks; Acquiring the number of coding blocks of the signaling information based on the number of bits of the signaling information and the coding unit, and calculating a number of coding blocks of the signaling information based on the number of coding blocks of the signaling information, A controller for controlling the extraction of the signaling information And a re-granulator for reassembling the extracted signaling information into a state before being fragmented under the control of the controller, wherein each of the encoding blocks includes one of at least one fragment fragmented in each portion of the signaling information Lt; / RTI >
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , ≪ / RTI >
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Indicates the length of the CRC field.

According to the present invention, the decoding performance can be improved at the receiver by effectively changing and encoding the control information when the transmitter performs encoding.

1 is a diagram for explaining a frame structure used in a general broadcast / communication system,
2 is a diagram illustrating a process of fragmenting control information in a broadcasting / communication system to which the present invention is applied,
FIG. 3 illustrates a method for fragmenting control information to generate encoder pressure information bits according to an embodiment of the present invention; and FIG.
Figure 4 illustrates a method for generating encoder input information bits without fragmenting control information according to another embodiment of the present invention;
5 is a diagram illustrating a method of configuring input information bits input to an encoder according to another embodiment of the present invention;
6 is a diagram for explaining the construction of input information bits input to an encoder according to another embodiment of the present invention;
7 and 8 are diagrams illustrating the construction of input information bits input to an encoder according to another embodiment of the present invention;
9 is a diagram for explaining the construction of input information bits input to an encoder according to another embodiment of the present invention;
FIG. 10 is a flowchart illustrating a method of coding control information in a transmitting apparatus according to an exemplary embodiment of the present invention,
11 is a flowchart illustrating an operation of receiving a control information in a receiving apparatus according to an embodiment of the present invention.
12 is a block diagram of a transmitting apparatus according to the present invention;
13 is a block diagram of a receiving apparatus according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

2 is a diagram illustrating a process of fragmenting control information in a broadcasting / communication system to which the present invention is applied.

Referring to FIG. 2, FIG. 2 is a diagram illustrating a process of encoding L1 variable signaling information 208 and L1 dynamic information 209, which are L1 post signaling information among L1 signaling information already described with reference to FIG. In FIG. 2, for convenience of description, the use of LDPC encoding is described as an example, but the present invention can also be applied to a system to which other encoding methods are applied. In FIG. 2, the L1 variable information 208 includes information that can be changed once in a frame, but does not change every frame as described in FIG. 1, so that the L1 variable information 208 may be the same in the Kth frame and the K + 1th frame. In this case, if the L1 variable information included in the Kth frame and the L1 variable information included in the (K + 1) th frame are the same, when the K + 1th frame is received by the receiver, The L1 variable information included in the (K + 1) th frame can be known in advance through the included L1 variable information. Therefore, in this case, the receiver can improve the decoding performance of the L1 dynamic information included in the (K + 1) th frame using the previously-known L1 variable information. That is, the receiver has already received the L1 variable information included in the Kth frame and the same information as the L1 variable information of the Kth frame is transmitted in the (K + 1) th frame, It is possible to improve the decoding performance of the (K + 1) -th frame because it is already known what kind of information is to the L1 variable information included in the (K + 1) th frame.

If the receiver fails to decode the Kth frame, the decoding performance of the L1 variable information and the L1 dynamic information of the (K + 1) th frame can be improved by using the L1 variable information received in the Kth frame have. For example, if the L1 variable information of the Kth frame is the same as the L1 variable information of the (K + 1) th frame, the receiver receiving the Kth frame can not obtain the LLR (Log Likelihood Ratio) value can be used at the time of decoding the (K + 1) -th frame, thereby improving the decoding performance.

In the case of an encoding method in the present specification, in the case of an LDPC code, an encoder is a unit of information smaller than an input information bit number of a predetermined size (an encoding unit corresponding to the number of input information bits corresponding to an encoder input size) Only bits can be encoded. Therefore, in the LDPC coding scheme, when information bits larger than the predetermined number of input information bits are input, the input information bits must be segmented. In the present specification, information input to the encoder is referred to as " input information bits ", and each codeword encoded and output by the encoder is referred to as a " coded block ".

In FIG. 2, L1 variable signaling information 208 and L1 dynamic information 209, which are L1 post signaling information of the size "a", are segmented into two encoding blocks. The L1 variable information 208 and the L1 dynamic information 209 have a variable length. If the L1 post signaling information is larger than the predetermined number of input bits of the encoder in FIG. 2, the L1 variable information 208 and the L1 dynamic information 209 should be fragmented into two encoding blocks. In this case, the a / 2 portion is extracted for the entire length " a " of the L1 post signaling information to generate the first input information bits 210, and the remaining a / 2 < / RTI > In this case, the first input information bits 210 include L1 variable information ₁ (configurable ₁ ) 210, which is a part of the L1 variable information 208. That is, the first input information bits include only L1 variable information 208 that does not change. And the second input information bit 212 and a part of an L1 variable information ₂ (L1 configurable ₂₎ (211) and the L1 dynamic information (L1 dynamic) (209) of the L1 variable information 208.

Assume that the L1 variable information 208 included in each of the Kth frame and the (K + 1) th frame is the same. In this case, if the receiver receives the K-th frame and succeeds in decoding the L1 variable information 208, the first encoding block including the first input information bits 210 in the (K + 1) -th frame need not be decoded There are advantages. However, in the case of the second encoding block including the second input information bits 212, only the L1 variable information ₂ (configurable ₂ ) 211, which is a part of the L1 variable information 208, 208, the receiver can not significantly improve the decoding performance of the L1 dynamic information 209 because the number of bits of the known information is not large. Therefore, it is preferable to include the L1 variable information 208 in each of the input information bits.

Also, in the LDPC coding scheme described as an example of the coding scheme in the present invention, the decoding performance for the information located in the front of the input information bits of the encoder may be better than the decoding performance of the information located at the rear. Therefore, when LDPC is used as the coding scheme in the embodiment of the present invention, it is desirable to improve the decoding performance of the receiver to place the L1 dynamic information, which may change every frame, in the input information bits.

3 is a diagram illustrating a method for fragmenting control information to generate encoder input information bits according to an embodiment of the present invention. In FIG. 3, it is assumed that the fragmentation value is 2. The fragmentation value " 2 " means that the L1 signaling information to be encoded, in particular, the L1 post-signaling information, is divided into two pieces of input information bits according to the encoding unit of the encoder input size and is input to the encoder. Therefore, when the fragmentation value is " 2 ", the input information bits encoded by the encoder are divided into two encoded blocks and output.

L1 variable information 301 in Figure 3 into two parts as shown in L1 variable information ₁ (L1 configurable ₁₎ (303) and the L1 variable information ₂ (L1 configurable ₂₎ (304) according to the "2" value of the fragmented It is fragmented. Also, the L1 dynamic information 302 is divided into two parts of L1 dynamic information ₁ (L1 dynamic ₁ ) 305 and L1 dynamic information ₂ (L1 dynamic ₂ ) 306 according to the fragmentation value.

Then, the transmitter configures the separated L1 variable information ₁ (L1 configurable ₁ ) 303 and L1 dynamic information ₁ (L1 dynamic ₁ ) 305 as one encoder input information bits as indicated by reference numeral 310, Information ₂ (L1 configurable ₂ ) 304 and L1 dynamic information ₂ (L1 dynamic ₂ ) 306 are composed of another encoder input information bits such as reference numeral 320 and each encoder input information bits 310, 320) by an LDPC encoder to generate two encoded blocks. In this case, in the embodiment of the present invention, preferably, when configuring the first input information bits 310, the L1 dynamic information ₁ 305 is arranged to be located in front of the L1 variable information ₁ 303. Also, in the preferred embodiment of the present invention, the L1 dynamic information ₂ 306 is arranged so as to be positioned in front of the L1 variable information ₂ 304 even when the second input information bits 320 are configured. However, this is only one embodiment of the present invention, and the positions of the L1 dynamic information and the L1 variable information may be mutually changed when constructing the input information bits. For example, it is possible to arrange L1 variable information ₁ (303) to be located in front of L1 dynamic information ₁ (305). Further, the L1 variable information ₂ 304 can be arranged to be located in front of the L1 dynamic information ₂ (306).

As described above, when the input information bits are configured, the method of arranging the L1 dynamic information 302 in front of the L1 variable information 301 may be applied even when fragmentation is not performed on the encoder input information bits It is possible. That is, even if fragmentation is not necessary because the length of the L1 post signaling information is smaller than the number of the LDPC encoder input information bits, the L1 dynamic information 302 may be arranged in front of the L1 variable information 301. [ This is shown in FIG. 4 is a diagram illustrating a method for constructing LDPC encoder input information bits without fragmenting L1 post-signaling information according to another embodiment of the present invention.

That is, when the LDPC encoder input information bits including the L1 variable information 410 and the L1 dynamic information 411 are configured, if the bits before the input information bits have better decoding performance than the bits after the input information bits It may be preferable to arrange the input information bits by arranging the L1 dynamic information 411 in front of the L1 variable information 410 as indicated by reference numeral 420.

Another embodiment of the present invention is shown in Fig.

5 is a diagram illustrating a method of configuring input information bits input to an encoder according to another embodiment of the present invention.

In FIG. 5, reference numeral 550 denotes L1 post signaling which is input to the encoder and includes L1 variable information (L1 configurable) 500 and L1 dynamic information of the current frame (or 'dynamic, current (L1) dynamic information of the next frame, which is the L1 dynamic information of the frame to be transmitted (501) and the frame to be transmitted later (or 'dynamic' quot; next frame " or " dynamic L1 post signaling for the next frame ") 502. That is, when the current frame is the Kth frame, the L1 dynamic information 502 of the next frame transmitted in the Kth frame includes the same value as the L1 dynamic information to be transmitted in the (K + 1) th frame. The L1 dynamic information 502 of the next frame is optional information, and the transmitter can notify the receiver of the presence or absence of the L1 dynamic information of the next frame through the L1 pre signaling. For example, if 'L1_REPETITION_FLG' is '1' in L1 pre signaling, there is L1 dynamic information of the next frame, and if 'L1_REPETITION_FLG' is 0, it may not exist.

5 also shows fragmentation of each control information included in the L1 post signaling information into the above-described " 2 " when the fragmentation value is " 2 " 5, the L1 variable information 500 included in the input information bits 550 of the L1 post signaling information input to the encoder, the L1 dynamic information 501 of the current frame, the L1 dynamic information 502 of the next frame, Fragment each two pieces.

When fragmenting the L1 variable information 500, the current frame L1 dynamic information 501 and the next frame L1 dynamic information 502 to " 2 ", the L1 variable information 500 is divided into L1 variable information ₁ (L1 configurable ₁₎ (504) and L1 variable information ₂ (L1 configurable ₂₎ (505) is divided into, in the current frame L1 dynamic information 501 is currently L1 dynamic information of the frame ₁ as shown in reference numbers 515 (L1 dynamic ₁ of the current frame) is divided into 506 and L1 dynamic information ₂ (L1 dynamic ₂ of the current frame) (507) of the current frame, L1 dynamic information of the next frame 502 and the reference numbers 520 as are each divided into the following frame L1 dynamic information _{1 (L1 dynamic 1 of the next} frame) (508) and the L1 dynamic information of the next frame _{2 (L1 dynamic 2 of the Current} frame) (509). 5, in coding the information of the reference numbers 510, 515, and 520, the L1 variable information ₁ 504, the L1 dynamic information ₁ 506 of the current frame, and the L1 dynamic information ₁ 508 ) Are constituted by first input information bits 530, which are units input to the encoder. The L1 variable information ₂ 505, the L1 dynamic information ₂ 507 of the current frame, and the L1 dynamic information ₂ 509 of the next frame are constituted by the second input information bits 535 which are input to the encoder .

5 according to another embodiment of the present invention, when configuring the first input information bits 530, the L1 variable information ₁ 504 is positioned at the end of the first input information bits with respect to other information bits . That is, as in the reference numeral 530, the L1 dynamic information ₁ 506 of the current frame and the L1 dynamic information ₁ 508 of the next frame are configured to be located at the frontmost positions of the first input information bits 530, And the L1 variable information ₁ 504 is located in the L1 variable information. Similarly, when configuring the second input information bits 535, the L1 variable information ₂ (505) is finally positioned. That is, it configured to position the L1 dynamic information ₂ 507, and L1 dynamic information ₂ 509 of the next frame of the current frame to the beginning of the second input information bits 535, and, L1 variable information ₂ 505 Is located at the last position. In this way, the configuration of the input information bits takes into account the property that the decoding performance is excellent for the bits positioned in the front in the case of the LDPC coding to which the present invention is applied. However, this is another embodiment of the present invention, and when the encoder input information bits are configured, the L1 dynamic information of the current frame, the L1 dynamic information of the next frame, and the L1 variable information may be mutually changed. For example, although not shown, when the first and second input information bits 530 and 535 are respectively configured, the L1 variable information _{1 and 2} (504 and 505) The L1 dynamic information _1,2 (506, 507) may be arranged next, and the L1 dynamic information _1,2 (508, 509) of the next frame may be arranged at the end of each. Here, the position of each of the L1 dynamic information _1,2 (506, 507) of the current frame and the L1 dynamic information _1,2 (508, 509) of the next frame may be changed.

4, in the case of applying the LDPC coding scheme in the coding scheme even in the case where the fragmentation is not necessary, considering the characteristic of decoding the bits located at the beginning of the input information bits, And the L1 variable information may be located at the end of the input information bits.

However, when the input information bits are constructed as described above, the position of the L1 dynamic information and the L1 variable information can be determined in consideration of the LDPC encoder coding performance for the input information bits regardless of whether fragmentation is applied or not. That is, as described above, in the case of the specific LDPC coding, if the decoding performance is excellent for the bits positioned at the rear, the L1 variable information is arranged at the beginning of the input information bits, Can be placed at the back of the bits.

Also, in the specific system, the L1 variable information and the L1 dynamic information can be independently encoded / decoded. Also in this case, if the L1 dynamic information is composed of the L1 dynamic information of the current frame and the L1 dynamic information of the next frame, as described above, the dynamic information of the current frame and the L1 dynamic information of the next frame are fragmented , it constitutes the L1 dynamic information ₁ and L1 dynamic information of _the following frame of the current frame is segmented in units of the first input information bit input to the encoder. Also constitute the L1 dynamic information ₂ and the L1 dynamic information ₂ of the next frame of the current frame is segmented in units of the second input information bit input to the encoder. Also, regardless of fragmentation, the L1 dynamic information of the current frame is arranged at the beginning of the input information bits, and the L1 dynamic information of the next frame is arranged at the rear of the input information bits.

Hereinafter, a case in which extended information, CRC (Cyclic Redundancy Check) information, and padding information added when LDPC coding is performed is added when encoding L1 post-signaling information will be described with reference to FIG.

Although FIGS. 1 to 5 illustrate that L1 input signal bits input to the encoder include only L1 variable information and L1 dynamic information in describing the L1 post signaling information, But actually includes extension information, CRC information, and padding bits.

6 is a diagram illustrating fragmentation of input information bits input to an encoder according to another embodiment of the present invention.

6, the fragmentation value is assumed to be N _{post_FEC_Block} . The L1 post signaling information 650, which is input information bits input to the encoder, includes L1 variable information 600, L1 dynamic information 601 of the current frame, And extended information 603, CRC information 604 and L1 padding bits 605 in addition to the L1 dynamic information 602 of the next frame.

 In FIG. 6, a cyclic redundancy check (CRC) 604 denotes parity bits of a CRC code. In a receiver, L1 variable information 600, L1 dynamic information 601 of a current frame, L1 dynamic information 602 of a next frame, And the extension information (Extension) 603, whether or not an error has occurred. The CRC 604 is also applied to the L1 variable information 600 and the L1 dynamic information 601 of the current frame and the L1 dynamic information 602 of the next frame, There is also water. That is, the number and position of the CRC may be changed by those skilled in the art.

6, the length of the L1 variable information 600 is K _{L1_conf} , the length of the L1 dynamic information 601 of the current frame is K _{L1_dyn, c} , the L1 dynamic information 602 of the next frame, The length of K _{L1_dyn, n} , the length of extension information 603 is K _{L1_ext} , and the length of CRC 604 is N _crc . If the length K _{L1_dyn, n} of the L1 dynamic information 602 of the next frame is "0", it means that the L1 dynamic information 602 of the next frame is not used. In addition, when the K _{L1_ext} is "0", the extended information 603 is not used, and when N _crc is "0", the CRC code is not used. The lengths K _{L1_conf} and K _{L1_dyn, c} and K _{L1_dyn, n} of the L1 variable information 600, the L1 dynamic information 601 of the current frame, and the L1 dynamic information 602 of the next frame are a function of the number of PLPs Can be expressed. Or through a predetermined signaling. For example, K _{L1_conf} is L1_POST_CONF_SIZE, through the L1 pre (105) K _{L1_dyn, c} is a parameter indicating a length of each of the like _{L1_POST_DYN,} CURRENT_SIZE, K _{L1_dyn, n} is L1_POST_DYN, NEXT_SIZE, length L1_POST_EXT_SIZE of the extended information 603 Lt; / RTI >

Assuming that a BCH (Bose Chaudhuri Hocquenghem) code and an LDPC (Low Density Parity Check) code are concatenated to the L1 signaling information, if the input bit length of the BCH code is K _bch , The number of coded blocks N _{post_FEC_Block} can be calculated by Equation (1) below. That is, the N _{post_FEC_Block} may be considered as a number in which the L1 signaling information bits are segmented. In case Considering the case of concatenating the BCH code and the LDPC code in the above, by using the length of the input bits of the BCH code (K _bch) but obtain the number of the encoded blocks, if only LDPC code is K _bch instead LDPC code It is of course possible to obtain the number of the encoding blocks by using the length (K _ldpc ) of the input bits of the encoding block.

는 x보다 큰 최소 정수를 나타낸다. 예를 들어,

이다.
K _{post_ex_pad} in Equation (1) is the _length of the L1 variable information 600, the L1 dynamic information 601 of the current frame, the L1 dynamic information 602 of the next frame, the extension information 603, and the CRC information 604 the sum of a K = K _{post_ex_pad L1_conf L1_dyn} + _{K, c} K + _{L1_dyn, n} + N + K _{L1_ext crc.} That is, K _{post_ex_pad} is the number of bits of the L1 post signaling excluding the padding field. In Equation (1)

Represents a minimum integer greater than x. E.g,

to be.

K _pad , which is a length in which a zero bit is inserted based on the number N of the encoding blocks N _{post_FEC_Block} , can be obtained by Equation (2) below.

는 x보다 큰 최소 정수를 나타낸다. 예를 들어,

이다. 상기 제로 비트가 삽입되는 길이인 K_pad는 생략 가능 하다.In Equation (2)

Represents a minimum integer greater than x. E.g,

to be. K _pad, in which the zero bit is inserted, may be omitted.

3 and 5, the L1 variable information 600, the L1 dynamic information 601 of the current frame, the L1 dynamic information 602, the extension information 603, and the CRC 604 of the next frame, And the L1-padding 605 are divided (fragmented) by the number of fragmentation N _{post_FEC_Block} , the respective lengths can be calculated by Equation (3) to Equation (6) below.

First, the length correction factor (factor) of the L1 variable information 600, the K _{L1_conf L1_conf_PAD} K can be calculated according to the following <Equation 3>. That is, the _{L1_conf_PAD} K is a correction factor taking into account a case where the length of the L1 variable information _{L1_conf} K is not a multiple of the number N of _{post_FEC_Block} fragmentation.

는 x보다 작은 최대 정수를 나타낸다. 일 예로,

이다.In Equation (3)

Represents the largest integer less than x. For example,

to be.

, 제 N_{post_FEC_Block}번째 부호화기 입력 정보 비트들 중 L1 가변 정보 N_{post_FEC_Block}(600c) 의 길이를

로 하기 위하여 계산된 값이다. 예를 들어 K_{L1_conf}=299, N_{post_FEC_Block}=2일 경우

이고, 첫 번째 부호화기 입력 정보 비트들 중 L1 가변 정보₁의 길이가 149이고, 두 번째 부호화기 입력 정보 비트들 중 L1 가변 정보₂의 길이는 149+1=150이 되도록 한다. 이는 추가적인 제로 패딩을 방지 하기 위함이다.In Equation (3), K _{L1_conf_PAD} is the length of the L1 variable information i (600b) among the i-th (i = 1 ... N _{post_FEC_Block} -1) encoder input information bits

, The length of the L1 variable information N _{post_FEC_Block} (600c) of the Nth _{post_FEC_Block} th encoder input information bits is

Lt; / RTI &gt; For example, if K _{L1_conf} = 299 and N _{post_FEC_Block} = 2

, The length of L1 variable information ₁ of the first encoder input information bits is 149, and the length of L1 variable information ₂ of the second encoder input information bits is 149 + 1 = 150. This is to prevent additional zero padding.

6, the length K _{L1_dyn, c_PAD} of the correction factor for the L1 dynamic information 601 of the current frame having the length K _{L1_dyn, c} is _expressed by Equation (4) below. The K _{L1_dyn and c_PAD} are correction factors considering the case where the length K _{L1_dyn, c} of the L1 dynamic information 601 of the current frame is not a multiple of the number of fragmentation N _{post_FEC_Block} .

는 x보다 작은 최대 정수를 나타낸다.
In Equation (4)

Represents the largest integer less than x.

Figure 6 in that the length K _{L1_dyn, n} correction factors for the L1 dynamic information 602 of the next frame length factor K _{L1_dyn, n_PAD} is the same as the following <Equation 5>. The K _{L1_dyn and n_PAD} are correction factors considering the case where the L1 dynamic information K _{L1_dyn, n} of the next frame is not a multiple of the number of fragmentation N _{post_FEC_Block} .

는 x보다 작은 최대 정수를 나타낸다. 상기에서 언급한 바와 같이 상기 다음 프레임의 L1 동적 정보(602)는 사용하지 않을 수 있다. 이 경우 상기 K_{L1_dyn,n}이 ‘0’임은 당연하다.상술한 <수학식 3> 내지 <수학식 5>와 동일한 방식으로 길이가 K_{L1_ext}인 확장 정보(603)와 길이가 N_crc인 CRC(604)와 길이가 K_pad 인 L1 패딩(padding)(605) 각각을 N_{post_FEC_Block}개로 단편화 할 경우 상기 확장 정보(603)+CRC(604)+L1 패딩(605)에 대한 보정 factor 의 길이 K_{L1_ext_PAD}는 아래의 <수학식 6>과 같다. 상기 K_{L1_ext_PAD}는 상기 확장 정보(603)와 CRC(604)와 L1 패딩(605)의 길이의 합이 단편화의 개수 N_{post_FEC_Block}의 배수가 아닐 경우를 고려한 보정 factor이다.In Equation (5)

Represents the largest integer less than x. As mentioned above, the L1 dynamic information 602 of the next frame may not be used. In this case, the K _{L1_dyn, n} is zero Im is natural. The above-described <Equation 3> to <Formula 5> in the same way as the length K _{L1_ext} the extended information 603, and a length of N _crc CRC The length K _{L1_ext_PAD} of the correction factor for the extension information 603 + CRC 604 + L1 padding 605 when fragmenting the padding 604 having the length K _pad and the padding 605 having the length K _pad into N _{post_FEC_Blocks} , Is expressed by Equation (6) below. The K _{L1_ext_PAD} is a correction factor considering the case where the sum of the length of the extension information 603, the CRC 604, and the L1 padding 605 is not a multiple of the number of fragmentation N _{post_FEC_Block} .

는 x보다 작은 최대 정수를 나타낸다. 상기에서 언급한 바와 같이 상기 K_pad는 사용하지 않을 수 있으며, 이 경우 K_pad는 ‘0’ 이다. 또한 상기 N_crc는 CRC 비트를 의미 한다.
In Equation (6)

Represents the largest integer less than x. As mentioned above, the K _pad may not be used, and in this case, K _pad is '0'. And N _crc denotes a CRC bit.

The process of calculating K _sig (i), which is the number of the i-th encoder input information bits 670, using the values calculated from Equations (1) to (6) same.

는 x보다 작은 가장 큰 정수를 나타낸다. 예를 들어,

이다.Each variable in Equation (7) is already defined in the specification,

Represents the largest integer less than x. E.g,

to be.

The number of the N _{post_FEC_Block-} th encoder input information bits 680 can be calculated by Equation (8) below.

는 x보다 작은 가장 큰 정수를 나타낸다. In Equation (8), each variable is already defined in the specification,

Represents the largest integer less than x.

In the above _description , fragmentation is performed so that the lengths of K _sig (i), (i = 1, ..., (N _{post_FEC_Block} -1)) and K _sig (N _{post_FEC_Block} ) are different. However, It is of course possible to prevent the occurrence of the above-mentioned problems. As mentioned above, it is a matter of course that the detailed formulas can be changed depending on the number and position of CRCs. For example, when a CRC code is applied to the L1 variable information 600, the dynamic information 601 of the current frame, and the dynamic information 602 of the next frame, the K _{L1_conf} , K _{L1_dyn, c} , K _{L1_dyn, n} may include the number of the respective CRC bits.

In FIG. 6, reference numeral 690 denotes fragmentation of the entire input information bits of reference numeral 650 into the first to N-th _{post-FEC_Block} encoder input information bits using Equation (1) to Equation (8) . More specifically, when an interleaver is provided in an encoder, the interleaver interleaves (fragmentation) the entire input information bits of the fragmented encoder, that is, the L1 signaling information, ).

The more detailed description of the reference numeral 690, the first encoder input information bits 660. Reference numeral 600, 601, 602, 603, 604, and a fragment of 605 by N _{post_FEC_Block} information bits to 600a, 601a, 602a, 603a, 604a, and 605a (fragmented L1 padding bits).

Information bits 600b, 601b, 602b, 603b, and 603b different from the reference numeral 650 fragmented reference numeral 600, 601, 602, 603, 604, and 605 into N _{post_FEC_Block} are input to the i-th encoder input information bits 670, 604b, and 605b are included.

Last N _{post_FEC_Block} second encoder input information bits 680 include reference numbers 600, 601, 602, 603, 604, of the information bits fragmented 605 by N _{post_FEC_Block} 600c, which are the final fragmented pieces, 601c, 602c, 603c, 604c, 605c are included.

Therefore, the receiver receiving the reference number 690 decodes the encoded input information bits 660, 670, and 680 for each encoded block, and then outputs the fragmented L1 dynamic information bits ( 601a, 601b and 601c, L1 dynamic information bits 602a, 602b and 602c of the next frame, L1 variable information bits 600a, 600b and 600c, fragmented extended information bits 603a, 603b and 603c, The original L1 post signaling information may be recovered by reassembling the fragmented CRC bits 604a, 604b, 604c, fragmented L1 padding bits 605a, 605b, 605c to a state before fragmentation.

In the receiving apparatus according to the embodiment of the present invention, the length K _{L1_conf} of the L1 variable information 600, the length K _{L1_dyn, c} of the L1 dynamic information 601 of the current frame _, and the length K _{If L1_dyn, n} is known, it is easy to _recover the L1 post signaling information. Therefore but also transmitting the K _{L1_conf} and K _{L1_dyn, c} and K _{L1_dyn, n} in length in the transmission apparatus, the K _{L1_conf} and K _{L1_dyn, c} and K _{L1_dyn, n} is can be expressed as a function of the number of the PLP the If the number of PLPs is transmitted, the receiving apparatus can recover the L1 post signaling information. Therefore, if the L1 free information 105 of FIG. 1 includes NUM_PLP (Number of PLP) information, which is the number of PLPs, it is possible for the receiving apparatus to efficiently receive the L1 post signaling information.

4, when the number of PLPs is included in the L1 pre-information 105 and the L1 dynamic information 411 is transmitted before the L1 variable information 410 even if fragmentation is not performed, The receiving apparatus can be usefully used to recover the L1 post signaling information. If the L1 dynamic information to be transmitted in the Kth frame and the K + 1th frame are the same, when the L1 post information is restored in the (K + 1) th frame, regardless of the success or failure of decoding of the L1 dynamic information in the Kth frame The L1 dynamic information of the Kth frame can be used. In the above-described embodiment of the present invention, when the information included in the L1 post signaling information is fragmented and included in the encoder input information, the L1 dynamic information is located ahead of the L1 variable information. However, This is only an example, and the L1 dynamic information may be located after the L1 variable information as in the embodiment to be described later. Also, in the above-described embodiments, the encoder input information bits are configured to be located in the order of L1 dynamic information of the current frame and L1 dynamic information of the next frame, but this order can be changed.

7 and 8 are diagrams illustrating the construction of input information bits input to the encoder according to another embodiment of the present invention. 7 is a diagram showing an example of the case where the L1 dynamic information is located after the L1 variable information. Hereinafter, a method for constructing input information bits input to the encoder will be described in detail with reference to FIGS. 7 and 8. FIG.

7, the length of the L1 variable information 721 is K _{L1_conf} , the length of the L1 dynamic information 722 of the current frame is K _{L1_dyn, c} , the L1 dynamic information 723 of the next frame, The length of K _{L1_dyn,} the length of the extension field 724 is K _{L1_ext} , and the length of the CRC 725 is N _crc .

The length (K _{L1_conf} ) of the L1 variable information 721 can be calculated from a parameter of L1_POST_CONF_SIZE or can be calculated from the number of PLPs. The length (KL1_dyn, c) of the L1 dynamic information 722 of the current frame can be calculated from the parameters L1_POST_DYN and CURRENT_SIZE, or can be calculated from the number of PLPs. The length (K _{L1_dyn, n} ) of the L1 dynamic information 723 of the next frame can be calculated by a parameter of L1_POST_DYN, NEXT_SIZE or can be calculated from the number of PLPs. The length (K _{L1_ext} ) of the extended field (Extension) 724 can be obtained from a parameter called L1_POST_EXT_SIZE. The length of the _CRC (N _crc ) may be fixed and may be, for example, 32.

Referring to FIG. 7, the number of bits of the L1-Post signaling in the L1 post signaling 720 is variable, and the L1-post signaling bits are transmitted through one or a plurality of LDPC blocks according to the L1-post signaling length. The LDPC block has the same meaning as the encoding block.

N _{post_FEC_Block, which} is the number of LDPC blocks for the L1-post signaling 720, is determined according to Equation (9).

이다. 상기 ‘A’값은 단편화 이후의 부호화 블록에서의 정보 비트 수(이하 K_sig)가 상기 K_bch 보다 작거나 같을 수 있도록 하는 보정 팩터(factor)로, 단편화 하는 시그널링의 종류의 개수에 따라 변경 가능하다. 일 예로, L1 가변 정보(721), 현재 프레임의 L1 동적 정보(722), 다음 프레임의 L1 동적 정보(723), 확장 정보(724)로 구분하여 단편화 하는 경우, 4가지의 정보로 구분 하여 단편화 하므로, A값은 3일 수 있다. 임의의 프레임에서 다음 프레임의 L1 동적 정보(723)를 사용 하지 않을 경우 상기 A값은 2일 수 있으나, 시스템의 효율을 위하여 상기 A값을 3으로 고정 할 수 있다. 상기 <수학식 9>에서

는 x 이상의 최소 정수를 의미하며, K_bch값은 BCH(Bose-Chaudhuri-Hocquenghem) 정보 비트의 수를 나타내는 것으로서, 상기는 BCH 부호와 LDPC 부호를 연접하는 경우를 고려하였을 경우로, BCH 부호의 입력 비트의 길이(K_bch)를 사용하여 부호화 블록의 개수를 구하였지만, LDPC 부호만을 사용할 경우에는 K_bch 대신 LDPC 부호의 입력 비트의 길이(K_ldpc)를 사용하여 부호화 블록의 개수를 구할 수 있음은 당연하다. That is, when in the <Equation 9> is K _bch is greater than or equal to K _{post_ex_pad,} N _{post_FEC_Block} is 1. However, if the K _bch is smaller than K _{post_ex_pad,} N _{post_FEC_Block} is

to be. The 'A' value is a correction factor that allows the number of information bits (hereinafter referred to as K _sig ) in the encoding block after fragmentation to be less than or equal to the K _bch , and can be changed according to the number of kinds of signaling to be fragmented Do. For example, when the fragmentation is performed by dividing the L1 variable information 721, the L1 dynamic information 722 of the current frame, the L1 dynamic information 723 of the next frame, and the extension information 724, Therefore, the A value may be 3. If the L1 dynamic information 723 of the next frame is not used in an arbitrary frame, the A value may be 2, but the A value may be fixed to 3 for efficiency of the system. In Equation (9)

_{Denotes a} minimum integer of x or more, and K _bch denotes a number of BCH (Bose-Chaudhuri-Hocquenghem) information bits. In the case of considering concatenation of a BCH code and an LDPC code, (K _bch ) of the LDPC code, the number of the encoded blocks can be obtained by using the length (K _ldpc ) of the input bits of the LDPC code instead of the K _bch when only the LDPC code is used Of course.

Kpost_ex_pad represents L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, and L1_POST_DYN, which respectively indicate the length of the L1 variable information 721, the length of the L1 dynamic information 722 of the current frame, and the length of the length extension field 724 of the L1 dynamic information 723 of the next frame, , NEXT_SIZE and L1_POST_EXT_SIZE parameters by adding the length of the CRC 725 (N _crc ) to the sum of the L1_POST_EXT_SIZE and the L1_POST_EXT_SIZE parameters, and represents the number of bits of the L1-post signaling excluding the L1_PADDING 726 which is the padding field. The CRC length (N _crc ) may be determined according to the maximum length of the L1-post signaling, and may be 32, for example. At this time, the length KL1_PADDING of the L1_PADDING field 726 can be calculated as shown in Equation (10).

In the <Equation 9> K _{L1_conf_PAD} denotes the length of the padding field of the L1 variable (configurable) information, K _{L1_dyn, c_PAD} denotes the length of the padding field of the L1 dynamic (dynamic) information of the current frame, K _{L1_dyn , n_PAD} denotes the length of the padding field of the L1 dynamic information of the next frame, _{L1_ext_PAD} K indicates the length of the padding field of the extended field 724 containing a CRC (725). The lengths of the padding fields L1_CONF_PAD 727, L1_DYN, C_PAD 728, L1_DYN, N_PAD 729 and L1_EXT_PAD 730 can be calculated as shown in Equation (11) to Equation (14).

Here, K _{L1_conf} , K _{L1_dyn, c} , K _{L1_dyn, n} , and K _{L1_ext} are values that can be obtained using the parameters L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, L1_POST_DYN, NEXT_SIZE, and L1_POST_EXT_SIZE, respectively. The parameters indicate the length of the L1 dynamic information, the length of the L1 variable information of the current frame, the length of the L1 variable information of the next frame, and the length of the extension field, respectively. The number of CRC bits (N _crc ) may be 32, for example. When the L1_REPETITION_FLAG indicating whether the L1 dynamic information of the next frame is used is set to '0', it is natural that the L1 variable information length K _{L1_dyn, n} of the next frame is '0'.

K _{post, which} is the final length of the entire L1 post signaling including the padding field, is set as Equation (15).

In this case, the number K _sig of information bits in each N _{post_FEC_Block} block is defined as Equation (16).

In order to obtain better performance as shown in FIG. 7, the L1 variable information 721, the L1 dynamic information 722 of the current frame, the L1 dynamic information of the next frame, (723, dynamic L1 post signaling for the next frame) should be distributed as evenly as possible on all FEC blocks.

Hereinafter, the number of bits input to each FEC block in FIG. 7 will be described in detail.

개의 비트로 구성된다. 상기 ‘제1 현재 프레임의 L1 동적 정보’(732)은 ‘현재 프레임의 L1 동적 정보’(722)중

개의 비트로 구성된다. 상기‘제1 다음 프레임의 L1 동적’(733)은 ‘다음 프레임의 L1 동적 정보’(723)중

개의 비트로 구성된다. 상기 ‘제1 확장 필드’(734)은 상기 ‘확장 필드’(724)와 CRC(725)중

개의 비트로 구성된다. 본 발명의 실시예에서는 상기 수식에서 알 수 있듯이, 첫 번째 부호화 블록의 입력 비트들 내의 제1 확장 필드(734)에는 L1 포스트 시그널링의 확장 필드(724)와 CRC(725)의 비트들이 같이 포함됨을 유념해야 한다. 상기의 구성은 첫 번째 부호화 블록부터

번째 부호화 블록들까지 동일한 방법으로 구성된다. The input bits of the first coded block of FIG. 7 include first L1 variable information 731, Configurable ₁ or Conf_1, L1 dynamic information 732 of the first current frame, Dynamic, currentFrame ₁ or D, C_1, L1 dynamic information 733 of the frame (Dynamic, nextFrame ₁ or D, N_1), and a first extension field 734 (Extension ₁ or E, C_1). The 'first L1 variable information' 731 includes the 'L1 variable information' 710

Bits. The 'L1 dynamic information of the first current frame' 732 is the 'L1 dynamic information of the current frame' 722

Bits. The 'L1 dynamic' of the first next frame '733 is the' L1 dynamic information of the next frame '723

Bits. The 'first extended field' 734 includes the 'extended field' 724 and the CRC 725

Bits. In the embodiment of the present invention, as shown in the above equation, the extended field 724 of the L1 post signaling and the bits of the CRC 725 are included in the first extension field 734 in the input bits of the first encoding block Keep in mind. In the above configuration,

Th encoded blocks are constructed in the same manner.

번째 부호화 블록에서의 정보 비트들은 ‘제 N 가변 정보’(739, Configurable_N 혹은 Conf_N), ‘제 N 현재 프레임의 L1 동적 정보’(740, Dynamic,currentFrame_N 혹은 D,C_N), ‘제 N 다음 프레임의 L1 동적 정보’(741, Dynamic,nextFrame_N 혹은 D,N_N), ‘제 N 확장 필드’(742, Extension_N 혹은 E,C_N)와 패딩 필드인 L1_CONF_PAD(727), L1_DYN,C_PAD(728), L1_DYN,N_PAD(729), L1_EXT_PAD(730)으로 구성된다. 상기 ‘제 N 가변 정보’(739)은 상기 ‘가변 정보’(710) 중

개의 비트로 구성된다. 상기 ‘제 N 현재 프레임의 L1 동적 정보’(740)은 ‘현재 프레임의 L1 동적 정보’(722)중

개의 비트로 구성된다. 상기 ‘제 N 다음 프레임의 L1 동적 정보’(741)은 ‘다음 프레임의 L1 동적 정보’(723) 중

개의 비트로 구성된다. ‘제 N 확장 필드’(742)은 상기 ‘확장 필드’(724)와 CRC(725)중

개의 비트로 구성된다. 본 발명의 실시 예에서는 상기 수식에서 알 수 있듯이, 첫 번째 부호화 블록의 입력 비트들 내의 제1 확장 필드(734)에는 L1 포스트 시그널링의 확장 필드(724)와 CRC(725)의 비트들이 같이 포함되며, K_{L1_ext_PAD}는 L1 포스트 시그널링의 확장 필드(724)와 CRC(725) 비트들에 대한 패딩 필드의 길이임을 유념해야 한다. 상기 패딩 필드에는 통상 적으로 ‘0’이 삽입된다. 또한 상기 패딩 필드의 위치는 변경 될 수 있음은 당연하다. 일예로, 상기 패딩 필드들이 모두 부호화 입력의 마지막에 위치 할 수 있다. 이를 간단히 도 8에 표기 하였다. 본 발명의 또 다른 실시예로, 상기 파라미터 L1_POST_EXT_SIZE가 상기 확장 필드 길이만을 나타내는 값이 아니라, 상기 확장 필드 길이 및 CRC 길이를 모두 포함한 값으로 하여 전송될 경우,

는 확장 필드의 길이와 N_crc를 합 한 값으로 생각할 수 있으며, 이 경우, 상기 N_crc는 모두 삭제 가능하다.

(N) variable information 739, Configurable _N or Conf_N, L1 dynamic information of the Nth current frame 740, Dynamic, currentFrame _N or D, C_N, L1 dynamic information of the frame '(741, dynamic, nextFrame _N or D, N_N),' N-th extension field '(742, extension _N or E, C_N) and the L1_CONF_PAD (727), L1_DYN, C_PAD (728) padding field , L1_DYN, N_PAD (729), and L1_EXT_PAD (730). The &quot; N variable information &quot; 739 includes information of 'variable information' 710

Bits. The 'L1 dynamic information of the Nth current frame' 740 is 'L1 dynamic information of the current frame' 722

Bits. The 'L1 dynamic information of the Nth next frame' 741 is 'L1 dynamic information of the next frame' 723

Bits. The &quot; Nth extension field &quot; 742 includes the 'extended field' 724 and the CRC 725

Bits. In the embodiment of the present invention, the first extension field 734 in the input bits of the first encoding block includes the bits of the extended signal 724 of the L1 post signaling and the bits of the CRC 725 , K _{L1_ext_PAD} is the length of the padding field for the extended field 724 and the CRC 725 bits of the L1 post signaling. In the padding field, '0' is normally inserted. It is a matter of course that the position of the padding field can be changed. For example, the padding fields may all be located at the end of the encoding input. This is shown in FIG. In another embodiment of the present invention, when the parameter L1_POST_EXT_SIZE is transmitted with a value including both the extended field length and the CRC length instead of the value indicating only the extended field length,

Can be thought of as the sum of the length of the extension field and N _crc . In this case, all of N _crc can be deleted.

Hereinafter, a description will be given of a case where the L1 dynamic information 723, the extension field 724, and the CRC 725 of the next frame are considered as one field and fragmented according to another embodiment of the present invention. . The L1 dynamic information 732, the extension field 724, and the CRC 725 of the next frame can be considered as one field since the information obtained in the previous frame can not be used in the current frame.

Hereinafter, a method of fragmenting the input information bits input to the encoder will be described in detail with reference to FIG.

9, the length of the L1 variable information 921 is _{KL1_conf} , the length of the L1 dynamic information 922 of the current frame is KL1_dyn, c, the L1 dynamic information 923 of the next frame length is the length of the _{L1_dyn K, n,} extensions (extension) (924) has a length of K _{L1_ext,} cRC (925) is referred to as n _crc.

The length (K _{L1_conf} ) of the L1 variable information 921 can be calculated by a parameter called L1_POST_CONF_SIZE or can be calculated from the number of PLPs. The length (K _{L1_dyn, c} ) of the L1 dynamic information 922 of the current frame can be calculated from the parameters L1_POST_DYN and CURRENT_SIZE or can be calculated from the number of PLPs. The length (K _{L1_dyn, n} ) of the L1 dynamic information 923 of the next frame can be calculated from the parameters of L1_POST_DYN and NEXT_SIZE or can be calculated from the number of PLPs. The length (K _{L1_ext} ) of the extended field (Extension) 924 can be obtained from a parameter called L1_POST_EXT_SIZE. The length of the _CRC (N _crc ) may be 32, for example. The length of the L1 dynamic information 923 of the next frame and the length of the extended field 924 and the length of the CRC may be represented by one parameter. .

9, the number of bits of the L1-Post signaling in the L1 post signaling 920 is variable, and the L1-post signaling bits are transmitted through one or a plurality of LDPC blocks according to the L1-post signaling length. The LDPC block has the same meaning as the encoding block of FIG.

N _{post_FEC_Block, which} is the number of LDPC blocks for L1-post signaling 920, is determined according to Equation (17).

이다. 상기 ‘A’값은 단편화 이후의 부호화 블록에서의 정보 비트 수(이하 K_sig)가 상기 K_bch 보다 작거나 같을 수 있도록 하는 보정 팩터(factor)로, 단편화 하는 시그널링의 종류의 개수에 따라 변경 가능하다. 일 예로, L1 가변 정보(921), 현재 프레임의 L1 동적 정보(922), 다음 프레임의 L1 동적 정보(923)와 확장 정보(924)로 구분하여 단편화 하는 경우, 3가지의 정보로 구분 하여 단편화 하므로, A값은 2일 수 있다. 상기 <수학식 17>에서

는 x 이상의 최소 정수를 의미하며, K_bch 값은 BCH(Bose-Chaudhuri-Hocquenghem) 정보 비트의 수를 나타내는 것으로서, 상기는 BCH 부호와 LDPC 부호를 연접하는 경우를 고려하였을 경우로, BCH 부호의 입력 비트의 길이(K_bch)를 사용하여 부호화 블록의 개수를 구하였지만, LDPC 부호만을 사용할 경우에는 K_bch 대신 LDPC 부호의 입력 비트의 길이(K_ldpc)를 사용하여 부호화 블록의 개수를 구할 수 있음은 당연하다. That is, when in the <Equation 17> is K _bch is greater than or equal to K _{post_ex_pad,} N _{post_FEC_Block} is 1. However, if the K _bch is smaller than K _{post_ex_pad,} N _{post_FEC_Block} is

to be. The 'A' value is a correction factor that allows the number of information bits (hereinafter referred to as K _sig ) in the encoding block after fragmentation to be less than or equal to the K _bch , and can be changed according to the number of kinds of signaling to be fragmented Do. For example, when fragmentation is performed by dividing the L1 variable information 921, the L1 dynamic information 922 of the current frame, the L1 dynamic information 923 of the next frame, and the extension information 924, , So the value of A may be 2. In Equation (17)

_{Denotes a} minimum integer of x or more, and K _bch denotes a number of BCH (Bose-Chaudhuri-Hocquenghem) information bits. In the case of considering concatenation of a BCH code and an LDPC code, (K _bch ) of the LDPC code, the number of the encoded blocks can be obtained by using the length (K _ldpc ) of the input bits of the LDPC code instead of the K _bch when only the LDPC code is used Of course.

K _{post_ex_pad} indicates L1_POST_CONF_SIZE, L1_POST_DYN, and CURRENT_SIZE, which respectively indicate the length of the L1 variable information 921, the length of the L1 dynamic information 922 of the current frame, the length of the L1 dynamic information 923 of the next frame, , The L1_POST_DYN, the NEXT_SIZE, and the L1_POST_EXT_SIZE parameters by adding the length of the CRC 725 (N _crc ) to the sum of the L1_POST_DYN, NEXT_SIZE and L1_POST_EXT_SIZE parameters, and represents the number of bits of the L1-post signaling except for the padding field L1_PADDING 726. The CRC length (N _crc ) may be determined according to the maximum length of the L1-post signaling, and may be 32, for example. In this case, the length K _{L1_PADDING} of the _{L1_PADDING} field 726 can be calculated by Equation (18).

In the <Equation 18> K _{L1_conf_PAD} denotes the length of the padding field of the L1 variable (configurable) information, K _{L1_dyn, c_PAD} denotes the length of the padding field of the L1 dynamic (dynamic) information of the current frame, K _{L1_ext_PAD} Represents the length of the padding field for the extended field 924 including the L1 dynamic information 923 and the CRC 925 of the next frame. The lengths of the padding fields L1_CONF_PAD 927, L1_DYN, C_PAD 928, and L1_EXT_PAD 930 can be calculated according to the following Equations (19) to (21).

는

로 표현되며, 이는 L1_POST_DYN,N,EXT_SIZE는 상기 길이를 나타내는 파라미터를 이용하여 구할 수 있다.Here, K _{L1_conf} , K _{L1_dyn, c} , K _{L1_dyn, n} , and K _{L1_ext} are values that can be obtained using the parameters L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, L1_POST_DYN, NEXT_SIZE, and L1_POST_EXT_SIZE, respectively. The parameters indicate the length of the L1 dynamic information 921, the length of the L1 variable information 922 of the current frame, the length of the L1 variable information 923 of the next frame, and the length of the extension field 924, respectively. The number of CRC bits (N _crc ) may be 32, for example. When the L1_REPETITION_FLAG indicating whether the L1 dynamic information of the next frame is used is set to '0', it is natural that the L1 variable information length K _{L1_dyn, n} of the next frame is '0'. The sum of the length of the dynamic information of the next frame and the length of the extension field can be represented by one parameter. For example,

The

, Where L1_POST_DYN, N, EXT_SIZE can be obtained using a parameter indicating the length.

K _{post, which} is the final length of the entire L1 post signaling including the padding field, is set as Equation (22).

In this case, the number K _sig of information bits in each N _{post_FEC_Block} block is defined as Equation (23).

9, in order to obtain better performance, L1 variable information 921, configurable L1 post signaling, L1 dynamic information 922, dynamic L1 post signaling for the current frame, (923, dynamic L1 post signaling for the next frame) and the extended field (924) should be distributed as evenly as possible on all FEC blocks.

Hereinafter, the number of bits input to each FEC block in FIG. 9 will be described in detail.

개의 비트로 구성된다. 상기 ‘제1 현재 프레임의 L1 동적 정보’(932)은 ‘현재 프레임의 L1 동적 정보’(922)중

개의 비트로 구성된다. 상기 ‘제1 확장 필드’(934)은 상기 ‘다음 프레임의 L1 동적 정보(923)’과 ‘확장 필드’(724)와 CRC(725) 중

개의 비트로 구성된다. 상기의 구성은 첫 번째 부호화 블록부터

번째 부호화 블록까지 동일한 방법으로 구성된다. The input bits of the first coded block of FIG. 9 include first L1 variable information 931, Configurable ₁ or Conf_1, L1 dynamic information 932 of the first current frame, Dynamic, currentFrame ₁ or D, C_1, Field 934 (Extension ₁ or E, C_1). The 'first L1 variable information' 931 includes the 'L1 variable information' 910

Bits. The 'L1 dynamic information of the first current frame' 932 is the 'L1 dynamic information of the current frame' 922

Bits. The 'first extended field' 934 includes the 'L1 dynamic information 923', the 'extended field' 724 and the CRC 725 of the 'next frame'

Bits. In the above configuration,

Th encoding block.

번째 부호화 블록에서의 정보 비트들은 ‘제 N 가변 정보’(939, Configurable_N 혹은 Conf_N), ‘제 N 현재 프레임의 L1 동적 정보’(940, Dynamic,currentFrame_N 혹은 D,C_N), ‘제 N 확장 필드’(942, Extension_N 혹은 E,C_N)와 패딩 필드인 L1_CONF_PAD(927), L1_DYN,C_PAD(928), L1_EXT_PAD(930)으로 구성된다. 상기 ‘제 N 가변 정보’(939)은 상기 ‘가변 정보’(910) 중

개의 비트로 구성된다. 상기 ‘제 N 현재 프레임의 L1 동적 정보’(940)은 ‘현재 프레임의 L1 동적 정보’(922)중

개의 비트로 구성된다. ‘제 N 확장 필드’(942)은 상기 ‘다음 프레임의 L1 동적 정보(923)‘과 ‘확장 필드’(924)와 CRC(925)중

개의 비트로 구성된다. 상기 패딩 필드에는 통상 적으로 ‘0’이 삽입된다. 또한 상기 패딩 필드의 위치는 변경 될 수 있음은 당연하다. 일 예로, 상기 패딩 필드들이 모두 부호화 입력의 마지막에 위치 할 수 있다.

The N bits of information bits in the first to Nth encoded blocks are denoted by 'N variable information' 939, Configurable _N or Conf_N, L1 dynamic information of Nth current frame 940, Dynamic, currentFrame _N or D, C_N, Field 942 (Extension _N or E, C_N) and padding fields L1_CONF_PAD 927, L1_DYN, C_PAD 928, and L1_EXT_PAD 930. The &quot; N variable information &quot; 939 includes the &quot; variable information &quot; 910

Bits. The 'L1 dynamic information of the Nth current frame' 940 is the 'L1 dynamic information of the current frame' 922

Bits. The 'Nth extension field' 942 indicates that the 'L1 dynamic information 923', the 'extended field' 924 and the CRC 925 of the 'next frame'

Bits. In the padding field, '0' is normally inserted. It is a matter of course that the position of the padding field can be changed. In one example, the padding fields may all be located at the end of the encoding input.

In another embodiment of the present invention, in the above embodiment, the L1 dynamic information 722 of the current frame, the L1 dynamic information 723 of the next frame, the extended field 724, and the CRC 725 are considered as one field The case of fragmentation will be described in detail. The L1 dynamic information 732, the extension field 724, and the CRC 725 of the next frame can not use the information obtained in the previous frame in the current frame, and the L1 dynamic information 732, (724) may or may not be present in the L1-Post signal and thus the L1 dynamic information 723 of the next frame, the extension field 724 and the CRC 725 may be combined into one Field can be considered as fragmentation.

을 값을 기반으로, L1_PADDING(726) 필드의 길이 K_{L1_PADDING}은 하기 <수학식 24>와 같이 계산할 수 있다.In this case, the correction factor A of Equation (17) may be 1. &Lt; EMI ID = 17.0 >

The length K _{L1_PADDING} of the _{L1_PADDING} field 726 can be calculated as shown in Equation 24 below.

K _{L1_ext_PAD} represents the L1 dynamic information 722 of the current frame and the L1 dynamic information 723 of the next frame, K _{L1_conf_PAD} represents the length of the padding field for L1 configurable information, And the extended field 724 including the CRC 725. [ The lengths of the padding fields L1_CONF_PAD and L1_EXT_PAD can be calculated by the following equations (25) to (26).

Here, _{KL1_conf} , KL1_dyn, c, _{KL1_dyn, n} and _{KL1_ext} are values that can be obtained by using the parameters L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, L1_POST_DYN, NEXT_SIZE and L1_POST_EXT_SIZE. The parameters indicate the length of the L1 dynamic information 721, the length of the L1 variable information 722 of the current frame, the length of the L1 variable information 723 of the next frame, and the length of the extension field 724, respectively. The number of CRC bits (N _crc ) may be 32, for example. When the L1_REPETITION_FLAG indicating whether the L1 dynamic information of the next frame is used is set to '0', it is natural that the L1 variable information length K _{L1_dyn, n} of the next frame is '0'. The sum of the length of the dynamic information of the current frame, the length of the dynamic information of the next frame, and the length of the extended field can be represented by one parameter.

In another embodiment of the present invention, although not shown, there is no extended field 724 during L1 post signaling. In this case, K _{L1_ext} becomes '0' and only the fragmented bits of the CRC field are included in each of the extension fields 734, 738, and 742, Extension among the fragmented information bits input to each code block. In this case, the number of fragmented bits of the CRC field itself may be very small, and fragmenting the extended field 724 and the CRC field 725 to construct each extended field 734, 738, 742 itself may be inefficient have. Therefore, in this case, the CRC field 725 may be efficient to fragment along with the L1 dynamic information 723 of the next frame. That is, instead of fragmenting the extended field 724 and the CRC field 725 together, the L1 dynamic information 723 and the CRC field 725 of the next frame are fragmented together (since the value of the extension field is '0'), And the L1 dynamic information 733, 737, and 741 of FIG.

In another embodiment of the present invention, not only the extension field does not exist but also the L1 dynamic information 723 of the next frame does not exist. In this case, as in the case of the above example, the number of fragmented bits of the CRC field may be very small, and fragmentation itself may be inefficient. Therefore, in this case, the CRC field 725 is fragmented together with the L1 dynamic information 722 of the current frame to constitute L1 dynamic information 731, 735, and 739 of the current frame.

10 is a flowchart of a method of coding control information and transmitting the control information in a transmitting apparatus according to an embodiment of the present invention.

Referring to FIG. 10, in step 1000, the transmitter determines L1 signaling information of a current frame. At this time, the transmitting apparatus generates L1 free information and L1 post signaling information. However, since the present invention relates to encoding L1 post-signaling information, encoding of L1 free information is not addressed.

In step 1002, the transmitting apparatus determines the number of L1 post signaling information bits excluding the padding field generated in step 1000. [ In step 1004, the transmitter determines how many coded blocks the L1 post signaling bits are to be transmitted considering the number of L1 post signaling information bits and the coding unit, which are determined in step 1002, excluding the padding field. Herein, the coding unit is a size that the encoder encodes at one time and is also referred to as the number of input information bits of the encoder in this specification. When concatenating the BCH coding and the LDPC coding, And may be referred to as a BCH information bit. In addition, the number of L1 post signaling information bits excluding the padding field is equal to the sum of L1 variable information bits, L1 dynamic information bits for the current frame, L1 dynamic information bits for the next frame, and CRC and extended field bits .

If the number of the encoded blocks is determined in step 1004, the transmitting apparatus fragmentates the L1 post signaling information according to the determined number of the encoded blocks in step 1006. [ The fragmentation scheme may use the above equations.

The fragmentation process of step 1004 is performed in detail through the following detailed steps. First, the correction factors, i.e. the number of padding bits, for each information (L1 variable information bits, L1 dynamic information bits for the current frame, L1 dynamic information bits for the next frame, and CRC and extended field bits) I ask. The total number of padding bits for L1 post signaling is obtained by adding the numbers of padding bits of the obtained pieces of information.

Next, the total number of L1 post signaling bits is calculated using the total number of padding bits for the L1 post signaling and the number of L1 post signaling information bits excluding the padding field determined in step 1002. [ If the total number of L1 post signaling bits obtained is divided by the number of coded blocks obtained in step 1004, the number of input bits necessary for one encoding block can be obtained. That is, the L1 post-signaling bits corresponding to the number of input bits are input to the encoder to perform encoding.

Next, the respective pieces of information (L1 variable information bits, L1 dynamic information bits for the current frame, L1 dynamic information bits for the next frame, CRC and extended field bits) are fragmented according to the determined number of encoding blocks (Step 1006), and sets input bits for a code block having the determined length of the input bits (step 1008). The number of groups of input bits for the code block is equal to the number of determined coding blocks. The detailed construction method of the input bits for the code block refers to the embodiments described above.

In step 1008, the transmitting apparatus includes fragmented L1 post signaling information for each encoder input information bit in step 1006. [ In step 1010, the transmitter performs encoding on each encoder input information bit, and then transmits the encoded information to the receiver.

In step 1012, the transmitting apparatus transmits the number of L1 post signaling information bits, the number of encoding blocks, or the number of PLPs to the receiving apparatus, and then moves to the next frame in step 1014 and repeats the operations of steps 1000 to 1012. Although it is described in FIG. 10 that step 1012 is performed after step 1010, step 1012 may be performed before step 1010. FIG. 10, in step 1012, the number of L1 post signaling information bits, the number of encoding blocks or the number of PLPs is transmitted to the receiver. However, all of these pieces of information may be transmitted, and some of these pieces of information, May be transmitted.

For example, in a broadcasting / communication system according to an embodiment of the present invention, when a transmitting apparatus transmits information on the number of L1 post signaling information bits and information on a signaling code (LDPC codeword length, code rate) without transmitting the number of coding blocks , The receiving apparatus can estimate the number of encoded blocks using this information.

11 is a flowchart illustrating an operation of receiving a control information of a receiving apparatus according to an embodiment of the present invention.

In step 1100, the receiving apparatus receives the L1 signaling information of the current frame. In step 1102, the receiving apparatus obtains at least one of the number of L1 post-signaling information bits or the number of encoded blocks or the number of PLPs transmitted in the current frame. Here, the receiving apparatus may receive the number of bits of the L1 post signaling information or the number of the encoding blocks from the transmitting apparatus, or may use predetermined information in advance. This may vary depending on the system user. However, since the present invention discusses the L1 post signaling information, the L1 free information will be processed according to a method performed in the broadcasting / communication system to which the present invention is applied. Therefore, Is omitted.

In step 1104, the receiving apparatus performs decoding on the received encoded blocks, and extracts the fragmented L1 post signaling information included in the decoded encoded blocks in step 1106. [ In step 1008, the receiving apparatus reassembles the L1 post signaling information extracted in step 1106 into a state before fragmentation.

In step 1110, the receiving apparatus receives the L1 post signaling information reassembled in step 1108 and the L1 signaling information other than the L1 post signaling information received in step 1100. [

Then, the receiving apparatus moves to the next frame in step 1112 and repeats the operations of steps 1100 to 1110.

12 is a block diagram of a transmitting apparatus 1200 according to the present invention.

The L1 signaling information generator 1202 generates the L1 signaling information of the current frame. At this time, the L1 signaling information generator 1202 generates the L1 free information and the L1 post signaling information and outputs it to the encoder 1204. However, since the present invention relates to encoding the L1 post signaling information, the L1 free information is encoded in accordance with the broadcasting / communication system to which the present invention is applied and is not described in detail in the present invention.

The controller 1206 determines the number of L1 post signaling information bits excluding the padding field generated by the L1 signaling information generator 1202. [ Then, the controller 1206 determines how many coded blocks the L1 post signaling bits are to be transmitted in consideration of the number of L1 post signaling information bits excluding the determined padding field and the coding unit. The controller 1206 also determines the number of PLPs. Here, the coding unit is a size for coding by an encoder at one time, which is also referred to as the number of input information bits of the encoder in this specification, and the encoder 1204 is composed of a BCH encoder and an LDPC encoder and performs concatenated coding The number of information bits input to the BCH encoder is also referred to as a BCH information bit.

The controller 1206 fragmentates the L1 post signaling information according to the determined number of the encoding blocks when the number of the encoding blocks is determined. The fragmentation will control the controller 1206 to control the interleaver to fragment the L1 post signaling information when the encoder 1204 has an interleaver. Alternatively, the controller 1206 may control the L1 signaling information generator 1202 to fragment the L1 post signaling information. The fragmentation scheme may use the above equations. In order to perform the fragmentation process, the controller 1206 performs the following control operations in detail. First, the controller determines a correction factor for each of the information (L1 variable information bits, L1 dynamic information bits for the current frame, L1 dynamic information bits for the next frame, and CRC and extended field bits) Find the number. The total number of padding bits for L1 post signaling is obtained by adding the numbers of padding bits of the obtained pieces of information.

Next, the controller calculates the total number of L1 post signaling bits using the total number of padding bits for the L1 post signaling and the number of L1 post signaling information bits excluding the determined padding field. The number of input bits necessary for one encoding block can be obtained by dividing the total number of L1 post signaling bits obtained by the obtained number of coded blocks. That is, the L1 post-signaling bits corresponding to the number of input bits are input to the encoder to perform encoding.

The controller then compares the respective information (L1 variable information bits, L1 dynamic information bits for the current frame, L1 dynamic information bits for the next frame and CRC and extended field bits) according to the determined number of encoding blocks And controls the input bits for the code block having the determined length of the input bits. The number of groups of input bits for the code block is equal to the number of determined coding blocks.

The controller 1206 controls the encoder 1204 or the L1 signaling information generator 1202 to include the fragmented L1 post signaling information for each encoder input information bit as described above. The encoder 1204 encodes the input information bits of each encoder and outputs the encoded information to the transmitter 1208. The transmitter 1208 transmits the encoded blocks to a receiver on a frame basis under the control of the controller 1206 send. The transmitter 1208 may also transmit the number of PLPs determined by the controller 1206 to the receiving apparatus.

13 is a block diagram of a receiving apparatus 1300 according to the present invention.

The receiver 1302 receives the L1 signaling information of the current frame and outputs it to the decoder 1304. Also, the receiver 1302 receives at least one of the number of L1 post-signaling information bits, the number of encoding blocks, or the number of PLPs transmitted in the current frame, and outputs the received signal to the controller 1306. Here, the controller 1306 may receive the number of the L1 post signaling information bits, the number of the encoding blocks or the number of PLPs from the transmission apparatus, or may use predetermined information in advance. This may vary depending on the system user. Since the receiver 1302 also receives the L1 free information but the L1 post signaling information is discussed in the present invention, the L1 free information is to be processed according to the method performed in the broadcasting / communication system to which the present invention is applied. A detailed description thereof will be omitted.

The decoder 1304 decodes the received encoded blocks. The controller 1306 extracts the fragmented L1 post signaling information included in each of the decoded encoding blocks according to an embodiment of the present invention. Then, the reassembler 1308 reassembles the extracted L1 post signaling information into a state before being fragmented, under the control of the controller 1306. [ That is, the controller 1306 calculates the fragmentation value using the number of bits of the L1 post signaling information, one of the number of encoding blocks or the number of PLPs, and notifies the reassembler 1308 of the fragmentation value, To restore the original L1 post signaling information.

Then, the controller 1306 controls the receiver 1302 to receive data using the reassembled L1 post signaling information and the signaling information other than the L1 post signaling information.

Although L1 variable information and L1 dynamic information are referred to as L1 post signaling information in the above description, this is a term used when the present invention is applied to DVB-T2 (Digital Video Broadcasting Terrestrial 2) -C2 (Digital Video Broadcasting Cable 2), the L1 variable information and the L1 dynamic information will be also referred to as Part II signaling information.

Embodiments of the present invention may also be embodied in codes that can be recorded in a computer in a computer-readable recording medium.

The recording medium that can be recorded on the computer is any data storage device capable of storing data that can be read by a computer system.

Examples of the computer-readable recording medium include a read only memory (ROM), a random access memory (RAM), a compact disk (CD), a magnetic tape, a floppy disk, Data storage devices, and carrier waves (such as data transmission over the wire or route through the Internet).

Claims (32)

A method for transmitting control information in a broadcast / communication system,
Generating signaling information including a plurality of parts;
Determining a number of encoding blocks to encode the signaling information in consideration of the number of bits and the encoding unit of the signaling information;
Fragmenting each portion of the signaling information into at least one fragment according to the determined number of encoding blocks;
Configuring input information bits of each encoding block to include one of at least one fragmented pieces in each portion of the signaling information;
Encoding the input information bits of each encoding block into the respective encoding blocks and transmitting the encoded input information bits;
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , &Lt; / RTI &gt;
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Wherein the length of the CRC field indicates the length of the CRC field. delete delete The method according to claim 1,
Wherein the signaling information further comprises a padding field. The method according to claim 1,
Wherein the step of determining the number of the encoding blocks is determined according to the following equation: &lt; EMI ID =

Where N _{post_FEC_Block} is the number of the encoded blocks, K _{post_ex_pad} is the number of signaling bits except for the padding field, K _bch is the size of the bits to the encoder (Encoder) coding at a time, as the unit of encoding, the BCH coding and LDPC encoding The number of BCH information bits that can be input to the BCH encoder when performing concatenation, and A is a correction factor. 5. The method of claim 4,
Wherein the length of the padding field is determined according to the following equation:

Where K _{L1_PADDING} represents the length of the padding field, K _{L1_conf_PAD} represents the length of the padding field for L1 configurable information, K _{L1_dyn and c_PAD} represent the length of the padding field for the L1 dynamic information of the current frame, K _{L1_dyn, n_PAD} represents the length of the padding field for the L1 dynamic information of the next frame, and K _{L1_ext_PAD} is the length of the padding field for the extension field including the CRC. delete The method according to claim 1,
Wherein a length of the input information bits of each coding block is determined according to the following equation:

Where K _sig is the length of the input information bits of each encoding block, N _{post_FEC_Block} is the number of the encoding blocks, K _post is determined according to the following equation,

Where K _{post_ex_pad} is the number of signaling bits except for the padding field and K _{L1_PADDING} is the length of the padding field. An apparatus for transmitting control information in a broadcast / communication system,
An L1 signaling information generator for generating signaling information comprising a plurality of fragments,
Determining a number of encoding blocks to encode the signaling information in consideration of the number of bits and the encoding unit of the signaling information, fragmenting each part of the signaling information into at least one fragment according to the determined number of encoding blocks, A controller for controlling to configure input information bits of each encoding block to include one of the fragmented at least one piece in each part of the signaling information;
An encoder configured to construct the input information bits of each coding block under the control of the controller and to encode the input information bits of each coding block into each coding block;
And a transmitter for transmitting the encoded block,
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , &Lt; / RTI &gt;
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Is a length of the CRC field. delete delete The method of claim 9, wherein
Wherein the signaling information further includes a padding field. The apparatus as claimed in claim 9, wherein the controller is configured to determine the number of the encoding blocks according to the following equation:

Where N _{post_FEC_Block} is the number of the encoded blocks, K _{post_ex_pad} is the number of signaling bits except for the padding field, K _bch is the size of the bits to the encoder (Encoder) coding at a time, as the unit of encoding, the BCH coding and LDPC encoding The number of BCH information bits that can be input to the BCH encoder when performing concatenation, and A is a correction factor. 13. The method of claim 12,
Wherein the length of the padding field is determined according to the following equation: &lt; EMI ID =

Where K _{L1_PADDING} represents the length of the padding field, K _{L1_conf_PAD} represents the length of the padding field for L1 configurable information, K _{L1_dyn and c_PAD} represent the length of the padding field for the L1 dynamic information of the current frame, K _{L1_dyn, n_PAD} represents the length of the padding field for the L1 dynamic information of the next frame, and K _{L1_ext_PAD} is the length of the padding field for the extension field including the CRC. delete 10. The apparatus of claim 9, wherein the length of the input information bits of each coding block is determined according to the following equation: &lt; EMI ID =

Where K _sig is the length of the input information bits of each encoding block, N _{post_FEC_Block} is the number of the encoding blocks, K _post is determined according to the following equation,

Where K _{post_ex_pad} is the number of signaling bits except for the padding field and K _{L1_PADDING} is the length of the padding field. A method for receiving control information in a broadcast / communication system,
Wherein the signaling information comprises a plurality of portions, each portion of the signaling information is fragmented into at least one fragment based on the number of the encoding blocks of the signaling information,
Obtaining a number of bits of the signaling information;
Obtaining the number of the encoding blocks of the signaling information based on the number of bits and the encoding unit of the signaling information;
Decoding the received encoded blocks based on the number of the encoded blocks of the signaling information,
Extracting fragmented signaling information included in the decoded encoded blocks;
And restoring the extracted signaling information to a state before fragmentation,
Wherein each of the encoding blocks includes one of at least one piece fragmented at each portion of the signaling information,
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , &Lt; / RTI &gt;
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Wherein the CRC field indicates a length of the CRC field. delete delete 18. The method of claim 17,
Wherein the signaling information further includes a padding field. 18. The method of claim 17,
Wherein the number of the encoding blocks is obtained according to the following equation: &lt; EMI ID =

Where N _{post_FEC_Block} is the number of the encoded blocks, K _{post_ex_pad} is the number of signaling bits except for the padding field, K _bch is the size of the bits to the encoder (Encoder) coding at a time, as the unit of encoding, the BCH coding and LDPC encoding The number of BCH information bits that can be input to the BCH encoder when performing concatenation, and A is a correction factor. 21. The method of claim 20,
Wherein the length of the padding field is determined according to the following equation:

Where K _{L1_PADDING} represents the length of the padding field, K _{L1_conf_PAD} represents the length of the padding field for L1 configurable information, K _{L1_dyn and c_PAD} represent the length of the padding field for the L1 dynamic information of the current frame, K _{L1_dyn, n_PAD} represents the length of the padding field for the L1 dynamic information of the next frame, and K _{L1_ext_PAD} is the length of the padding field for the extension field including the CRC. delete 18. The method of claim 17,
Wherein the length of the input information bits of each coding block is determined according to the following equation:

Where K _sig is the length of the input information bits of each encoding block, N _{post_FEC_Block} is the number of the encoding blocks, K _post is determined according to the following equation,

Where K _{post_ex_pad} is the number of signaling bits except for the padding field and K _{L1_PADDING} is the length of the padding field. An apparatus for receiving control information in a broadcast / communication system,
The signaling information comprising a plurality of portions, wherein each portion of the signaling information is fragmented into at least one fragment based on the number of the encoding blocks of the signaling information, And,
A decoder for decoding the received encoded blocks;
Acquiring the number of bits of the signaling information, obtaining the number of the encoding blocks of the signaling information based on the number of bits of the signaling information and the encoding unit, and based on the number of the encoding blocks of the signaling information, A controller for controlling to extract the fragmented signaling information included in the decoded encoded blocks;
And a remanufacturer for reassembling the extracted signaling information into a state before being fragmented under the control of the controller,
Wherein each of the encoding blocks includes one of at least one piece fragmented at each portion of the signaling information,
The signaling information includes L1 configurable information, L1 dynamic information of a current frame, L1 dynamic information of a next frame, an extension field, and a cyclic redundancy check (CRC) field,
The extension field K _{L1_conf_PAD,} K _{L1_dyn, c_PAD,} K _{L1_dyn, n_PAD,} K _{L1_ext_PAD} the length of the length, L1 dynamic information of the next frame of the length, L1 dynamic information of the current frame for each of the L1 variable information, , &Lt; / RTI &gt;
K _{L1_conf_PAD} , K _{L1_dyn, c_PAD} , K _{L1_dyn, n_PAD} , and K _{L1_ext_PAD} are determined according to the following equations,

In the above equation

Wherein the CRC field indicates a length of the CRC field. delete delete 26. The method of claim 25,
Wherein the signaling information further includes a padding field. 26. The broadcast / communication system of claim 25, wherein the controller is configured to obtain the number of the encoding blocks according to the following equation: &lt; EMI ID =

Where N _{post_FEC_Block} is the number of the encoded blocks, K _{post_ex_pad} is the number of signaling bits except for the padding field, K _bch is the size of the bits to the encoder (Encoder) coding at a time, as the unit of encoding, the BCH coding and LDPC encoding The number of BCH information bits that can be input to the BCH encoder when performing concatenation, and A is a correction factor. 29. The method of claim 28,
Wherein the length of the padding field is determined according to the following equation: &lt; EMI ID =

Where K _{L1_PADDING} represents the length of the padding field, K _{L1_conf_PAD} represents the length of the padding field for L1 configurable information, K _{L1_dyn and c_PAD} represent the length of the padding field for the L1 dynamic information of the current frame, K _{L1_dyn, n_PAD} represents the length of the padding field for the L1 dynamic information of the next frame, and K _{L1_ext_PAD} is the length of the padding field for the extension field including the CRC. delete The apparatus of claim 25, wherein the length of the input information bits of each coding block is determined according to the following equation: &lt; EMI ID =

Where K _sig is the length of the input information bits of the respective encoding blocks, N _{post_FEC_Block} is the number of the encoding blocks, and K _post is determined according to the following equation.

Where K _{post_ex_pad} is the number of signaling bits except for the padding field and K _{L1_PADDING} is the length of the padding field.

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