CN103460606A

CN103460606A - Method and apparatus for transmitting and receiving control information in broadcasting/communication system

Info

Publication number: CN103460606A
Application number: CN2012800152319A
Authority: CN
Inventors: 郑鸿实; I.古铁雷斯; A.莫拉德; 尹圣烈; 梁贤九
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2011-03-25
Filing date: 2012-03-23
Publication date: 2013-12-18
Anticipated expiration: 2032-03-23
Also published as: TWI513198B; RU2597516C2; KR20120108920A; JP2014512118A; KR101722284B1; AU2012237079B2; JP5916837B2; AU2012237079A1; CN103460606B; TW201244382A; RU2013147636A

Abstract

A method and an apparatus for encoding, transmitting, and receiving signaling information in a broadcasting/communication system are provided. The method includes generating the signaling information which comprises a plurality of pieces; determining the number of coded blocks to which the signaling information is to be encoded, based on the number of bits of the signaling information and the number of encoder input information bits; segmenting each piece of the signaling information based on the number of the coded blocks; constructing input information bits of each coded block to include segmented parts of each piece of the signaling information; encoding the input information bits to each coded block; and transmitting each coded block.

Description

For the method and apparatus in the control information of broadcast/communication system sending and receiving

Technical field

The present invention relates generally to for the method and apparatus in the control information of broadcast/communication system sending and receiving, and the method and apparatus that more specifically, relates to the sending and receiving control information in the broadcast/communication system of a kind of use low-density checksum (LDPC) code.

Background technology

Fig. 1 illustrates the frame be used in traditional broadcast/communication system.

With reference to Fig. 1, in the broadcast/communication system, sending and receiving comprises the frame 101 of control information.That frame 101 comprises is leading 102, layer 1 (L1) signaling 103 and data 104.Herein, can leading 102 and L1 signaling 103 in send control information.Leading 102 is synchronous etc. the signals of time for obtaining receiver and Frequency Synchronization, frame boundary.

Shown in Fig. 1, data 104 comprise physical layer channel (PLP) 108,109 and 110.Different modulation schemes and code check can be respectively used to PLP independently.

Where 103 indications of L1 signaling send the L1 signal, and comprise the front information (L1-pre information) 105 of L1-, the configurable information 106 of L1 and L1 multidate information 107.The configurable information 106 of L1 and L1 multidate information 107 are called as signaling information 120 after L1-.In addition, the configurable information 106 of L1 may be called as signaling after configurable L1-, and L1 multidate information 107 can be called as signaling after dynamic L1-.

Before L1-, information 105 is included in the information that time domain seldom changes, such as the number of cell identifier, network identifier, radio frequency, the length of frame and the position of pilot subcarrier.The configurable information 106 of L1 comprises the information more often changed than information before L1-105.The example of the configurable information 106 of L1 comprises the PLP identifier, is used to send modulation scheme and the code rate information of each PLP.

In Fig. 1, L1 multidate information 107 comprises the information that can change in each frame, the information of the position sent in present frame such as each PLP about sending service data (that is the information of the position that, about each PLP that sends service data, starts in present frame and finish).

In addition, after L1-, signaling information 120 can comprise the information configurable information 106 and multidate information 107 after L1.For example, after L1-, signaling information 120 can comprise extend information, fill as the cyclic redundancy check (CRC) (CRC) of error detecting code and L1.For example, " Peterson; W.W.andBrown, D.T. (January1961). ' Cyclic Codes for Error Detection(is for the cyclic code of error-detecting) ' Proceedings of the IRE49:228.doi:10.1109/JRPROC.1961.287814 " use of CRC described.

PLP1108, PLP2109 and PLP N110 are service datas, and each sends at least one broadcast service channel.PLP1108, PLP2109 and PLP N110 comprise actual broadcast data.

With reference to Fig. 1, by the leading 102 synchronous receivers that obtained frame 101, obtain the information of the scheme that comprises data and be sent out, length of frame etc. by L1 signaling information 103.The receiver then information exchange based on obtaining is crossed PLP108 to PLP110 reception relevant data.

As mentioned above, when the control information such as signaling information sends in the broadcast/communication system, the performance of encoding control information must be better than the performance of encoded digital information.Therefore, exist the efficient coding method of signaling information and the needs of efficient coding/decoding method thereof.

Summary of the invention

Therefore, designed the present invention and occurred at least the problems referred to above of the prior art with solution, and at least following advantages is provided.

Aspect of the present invention will provide a kind of coding method of performance of the decoding that improves control information.

It is a kind of for improving the coding method of the performance of the decoding of signaling information after L1-that another aspect of the present invention will provide.

It is a kind of for the method and apparatus in the control information of broadcast/communication system sending and receiving that another aspect of the present invention will provide.

According to an aspect of the present invention, provide a kind of for send the method for signaling information in the broadcast/communication system.Described method comprises: generate the signaling information that comprises a plurality of; The number of the number of the bit based on signaling information and encoder input information bits determines that signaling information is by the number of the code block that is encoded into; Number based on code block is cut apart every signaling information; Build the input information bits of each code block to comprise the rear section of cutting apart of every signaling information; Input information bits is encoded to each code block; And send each code block.

According to a further aspect in the invention, provide a kind of for receive the method for signaling information in the broadcast/communication system.Described method comprises: the code block that receives signaling information; The number of the bit of the number of the bit of acquisition signaling information or the code block of signaling information; The decoding code block; Be extracted in the signaling information bit after cutting apart that the code block of decoding comprises; And the rear signaling information bit of cutting apart that will extract returns to the state before cutting apart.

According to a further aspect in the invention, provide a kind of for send the device of signaling information in the broadcast/communication system.Described device comprises: layer 1 (L1) signaling information maker comprises the signaling information of a plurality of for generation; Controller, determine that for the number of the number of the bit based on signaling information and encoder input information bits signaling information is by the number of the code block that is encoded into; Encoder, cut apart every signaling information for the number based on code block, builds the input information bits of each code block to comprise the rear section of cutting apart of every signaling information, and input information bits is encoded to each code block; And transmitter, for sending each encoding block.

According to a further aspect in the invention, provide a kind of for receive the device of signaling information in the broadcast/communication system.Described device comprises: receiver, for receiving the code block of signaling information; Decoder, for the code block of decoding; Controller, for the number of the code block of the number of the bit that obtains signaling information or signaling information, and extract the rear signaling information bit of cutting apart in the code block that is included in decoding; And reformer, be recombined into the state before cutting apart for cutting apart rear signaling information bit.

The accompanying drawing explanation

From the detailed description below in conjunction with accompanying drawing, above and other of the present invention aspect, feature and advantage will be clearer, in accompanying drawing:

Fig. 1 is illustrated in the frame used in traditional broadcast/communication system.

Fig. 2 is illustrated in traditional in the broadcast/communication system and cuts apart rear control information.

Fig. 3 illustrates according to an embodiment of the invention for cutting apart control information and generating the method for encoder input information bits;

Fig. 4 illustrates according to an embodiment of the invention, in the situation that do not cut apart the method that control information generates the encoder input information bits;

Fig. 5 illustrates the method that is input to according to an embodiment of the invention the input information bits of encoder for structure;

Fig. 6 illustrates the information bit that is input to according to an embodiment of the invention encoder;

Fig. 7 and Fig. 8 illustrate the information bit that is input to according to an embodiment of the invention encoder;

Fig. 9 illustrates the information bit that is input to according to an embodiment of the invention encoder;

Figure 10 illustrates according to an embodiment of the invention, for the flow chart of the method for by dispensing device, encoding and sending control information;

Figure 11 illustrates according to an embodiment of the invention, for the flow chart of the method by the receiving system receiving control information;

Figure 12 illustrates the block diagram of dispensing device according to an embodiment of the invention; And

Figure 13 illustrates the block diagram of receiving system according to an embodiment of the invention.

Embodiment

Describe below with reference to accompanying drawings various embodiment of the present invention in detail.In the following description and drawings, by omitting, known function and the detailed description of configuration are disclosed, to avoid unnecessarily fuzzy theme of the present invention.

Although will use below LDPC Coding and description embodiments of the invention, the present invention is also applicable to the coding of other types.

Fig. 2 is illustrated in traditional in the broadcast/communication system and cuts apart rear control information.Particularly, shown in Fig. 2 be to be included in the L1 signaling information in L1-after the corresponding configurable information 208 of L1 and the L1 multidate information 209 of signaling information encoded.

With reference to Fig. 2, because comprising, the configurable information 208 of L1 do not change in each frame, but the information that may sometimes change, so the configurable information of the L1 in the K frame can be identical with the configurable information of L1 in (K+1) frame.When the configurable information of the L1 in being included in the K frame is identical with the configurable information of L1 in being included in (K+1) frame, when receiving (K+1) frame, receiver can be known the configurable information of L1 be included in (K+1) frame in advance by being included in the configurable information of L1 in the K frame received.Therefore, receiver can improve by the configurable information of L1 with known in advance the performance of the decoding that is included in the L1 multidate information in (K+1) frame.

More specifically, because receiver receives the configurable information of L1 be included in the K frame and the identical configurable information of L1 sends in (K+1) frame, so, when receiver decoding (K+1) frame, receiver has been known the configurable information of L1 be included in (K+1) frame.

In addition, even decode K frame when failure when receiver, receiver also can improve the performance of the decoding of the configurable information of L1 of (K+1) frame and L1 multidate information by use the configurable information of the L1 received in the K frame.For example, when the configurable information of L1 of the configurable information of the L1 of K frame and (K+1) frame is identical, even receiver decoding is included in the configurable information failure of L1 in the K frame, receiver also can use log-likelihood ratio (LLR) value of acquisition (K+1) frame of decoding.

When using the LDPC code, encoder is coded information bits only, and its number is less than input information bits (coding units; The number of input information bits is corresponding to the input size of encoder) pre-determine number.Therefore, in the LDPC encoding scheme, when the number of input information bits be greater than information bit pre-determine number the time, input information bits is divided.Herein, the information that is input to encoder is called as " input information bits ", and is called as " code block (coded block) " in the code word of exporting by encoder encodes later.

With reference to Fig. 2, there is variable-length and be partitioned into two code blocks corresponding to the configurable information 208 of the L1 of signaling information after the L1-with size " a " and L1 multidate information 209.After L1-the number of the bit of signaling information be greater than the encoder information bit pre-determine number the time, after L1-, signaling information is partitioned into two code blocks.In this case, extract a/2 by signaling information from L1-and partly generate the first input information bits 210, extract remaining a/2 by signaling information from L1-and generate the second input information bits 212.The first input information bits 210 comprises the configurable information of L1 as the part of the configurable information 208 of L1 ₁(configurable ₁) 210.Namely, the first input information bits 210 only comprises the configurable information 208 of L1.In addition, the second input information bits 212 comprises the configurable information of L1 as the part of the configurable information 208 of L1 ₂(L1 is configurable ₂) 211 and L1 multidate information (L1 is dynamic) 209.

Suppose that the configurable information 208 of the L1 be included in the K frame is identical with the configurable information 208 of L1 in being included in (K+1) frame.Therefore, when receiver receives K frame and 208 success of the configurable information of decoding L1, the advantage of existence is, then receiver need not be decoded and be comprised the first generation code block of the first input information bits 210 in (K+1) frame.Yet, comprise that the second generation code block of the second input information bits 212 only comprises the configurable information of L1 as the part of the configurable information 208 of L1 ₂(configurable 2) 211.Therefore, although receiver is known the configurable information 208 of L1, the number of the bit of Given information is large not for receiver improves the performance of decoding of L1 multidate information 209 significantly.

According to embodiments of the invention, the configurable information 208 of L1 is included in each in the first input information bits and the second input information bits as shown in Figure 2.

In addition, in the LDPC encoding scheme, the decoding performance of information of forward part that is positioned at the encoder input information bits is often good than the decoding performance of the information of the rear section that is positioned at the encoder input information bits.Therefore, when using LDPC, according to embodiments of the invention, expectation is the L1 multidate information, that is, the Information locating that can change in each frame in the forward part of input information bits in order to improve the decoding performance of receiver.

Fig. 3 illustrates according to an embodiment of the invention for cutting apart control information and generating the method for encoder input information bits.Particularly, in Fig. 3, partition value equals 2, its hint is according to the coding units of the input size corresponding to encoder, by the L1 signaling information that is encoded (especially, signaling information after L1-) be divided into the first input information bits and the second input information bits, and the first input information bits and the second input information bits are imported into encoder.Therefore, when partition value equals 2, the input information bits by encoder encodes is divided into two code blocks, and so latter two code block is exported from encoder.

With reference to Fig. 3, the configurable information 301 of L1 is partitioned into two parts according to partition value 2, that is, and and the configurable information of L1 ₁(L1 is configurable ₁) 303 and the configurable information of L1 ₂(L1 is configurable ₂) 304.In addition, L1 multidate information 302 also is divided into two parts according to partition value 2, that is, and and the L1 multidate information ₁(L1 is dynamic ₁) 305 and the L1 multidate information ₂(L1 is dynamic ₂) 306.

In addition, the L1 configurable information of transmitter from separating ₁(L1 is configurable ₁) 303 and the L1 multidate information ₁(L1 is dynamic ₁) 305 structure the first encoder input information bits 310, and from the configurable information of L1 ₂(L1 is configurable ₂) 304 and the L1 multidate information ₂(L1 is dynamic ₂) 306 structure the second encoder input information bits 320.At first transmitter inputs each in the first encoder input information bits 310 and the second encoder input information bits 320 to generate two code blocks to the LDPC encoder.In the first input information bits 310, the L1 multidate information ₁305 are arranged in the configurable information of L1 ₁303 front.Similarly, in the second input information bits 320, the L1 multidate information ₂306 are arranged in the configurable information of L1 ₂304 front.

Replacedly, the configurable information of L1 multidate information and L1 switch each other.For example, the configurable information of L1 ₁303 can be arranged in the L1 multidate information ₁305 front, and the configurable information of L1 ₂304 can be arranged in the L1 multidate information ₂306 front.

In addition, even when the encoder input information bits is not divided, also L1 multidate information 302 can be arranged in to the front of the configurable information 301 of L1.Namely, even the length of signaling information is less than the number that pre-determines of LDPC encoder information bit after L1, and therefore, while not needing to cut apart after L1-signaling information, L1 multidate information 302 still can be arranged in the front of the configurable information 301 of L1.

Fig. 4 illustrates according to an embodiment of the invention, in the situation that do not cut apart the method that signaling information after L1-builds LDPC encoder input information bits.

With reference to Fig. 4, when when comprising that the configurable information 410 of L1 and L1 multidate information 411 build LDPC encoder input information bits, if being positioned at the Performance Ratio of decoding of bit of the forward part of input information bits, to be positioned at the performance of decoding of bit of rear section of input information bits good, by the front that L1 multidate information 411 is arranged in to the configurable information 410 of L1, build input information bits, as meaned by reference to numeral 420.

Fig. 5 illustrates according to an embodiment of the invention, is input to the method for the input information bits of encoder for structure.Particularly, Fig. 5 illustrates according to partition value 2 and cuts apart and be included in the multi-disc control information in signaling information after L1-.

With reference to Fig. 5, be input to the L1 multidate information (or " dynamic; present frame " or " for signaling after the dynamic L1-of present frame ") 501 that signaling 550 after the L1-of encoder comprises the configurable information 500 of L1, present frame, and the L1 multidate information of next frame (or " dynamic; next frame " or " for signaling after the dynamic L1-of next frame ") 502, wherein, the L1 multidate information 502 of next frame is the L1 multidate information of the frame that will be sent out subsequently.Particularly, when present frame is the K frame, the L1 multidate information 502 of the next frame sent in the K frame comprises the value identical with the L1 multidate information that will send in (K+1) frame.The L1 multidate information 502 of next frame is selective information, and transmitter can come Notification Sink whether to have the L1 multidate information for next frame by signaling before L1-.For example, when the sign L1_REPETITION_FLG before L1-in signaling has value 1, there is the L1 multidate information for next frame in this indication.Yet, when L1_REPETITION_FLG has value 0, there is not the L1 multidate information for next frame in this indication.

Each in the L1 multidate information 501 of the configurable information 500 of L1, present frame and the L1 multidate information 502 of next frame is partitioned into 2 parts.Particularly, the configurable information 500 of L1 is divided into the configurable information of L1 ₁(L1 is configurable ₁) 504 and the configurable information of L1 ₂(L1 is configurable ₂) 505, as meaned by reference to numeral 510.The L1 multidate information 501 of present frame is divided into the L1 multidate information of present frame ₁(L1 of present frame is dynamic ₁) 506 and the L1 multidate information of present frame ₂(L1 of present frame is dynamic ₂) 507, as meaned by reference to numeral 515.The L1 multidate information 502 of next frame is divided into the L1 multidate information of next frame ₁(L1 of next frame is dynamic ₁) 508 and the L1 multidate information of next frame ₂(L1 of next frame is dynamic ₂) 509, as meaned by reference to numeral 520.

During encoding, the configurable information of L1 ₁504, the L1 multidate information of present frame ₁506, and the L1 multidate information of next frame ₁508 are built as the first input information bits 530.In addition, the configurable information of L1 ₂505, the L1 multidate information of present frame ₂507, and the L1 multidate information of next frame ₂509 are built as the second input information bits 535.

The configurable information of L1 ₁504 are arranged on the decline of the first input information bits 530, at the L1 of present frame multidate information ₁506 and the L1 multidate information of next frame ₁after 508.

Similarly, the configurable information of L1 ₂505 are positioned at the decline of the second input information bits 535, at the L1 of present frame multidate information ₂507 and the L1 multidate information of next frame ₂after 509.

As mentioned above, build the first input information bits 530 and the second input information bits 535 and be the decoding performance basis more preferably of the bit of the forward part that is positioned at information bit, as in the LDPC coding.Therefore, the L1 multidate information 501 of the configurable information 500 of L1, present frame and the actual location of the L1 multidate information 502 of next frame in the first input information bits 530 and the second input information bits 535 can depend on decoding performance, for example, the type of the coding based on using and changing.

In addition, Reference to Figure 4 as described above, even when not needing to cut apart, the decoding performance of bit of considering the forward part that is positioned at input message when using the LDPC encoding scheme is better, the L1 multidate information of present frame can be positioned at the foremost portion of input information bits, and the configurable information of L1 can be positioned at the decline of input information bits.

Therefore, no matter whether apply, cut apart, can be in the situation that consider that the coding efficiency of the input information bits by the LDPC encoder determines the location of L1 multidate information and the configurable information of L1.Namely, as mentioned above, when the decoding performance of the bit of the rear section that is positioned at input information bits is better than the decoding performance of the bit of the forward part that is positioned at input information bits, the configurable information of L1 can be arranged in the forward part of input information bits, and the L1 multidate information can be arranged in the rear section of input information bits.

In addition, the configurable information of L1 and L1 multidate information can be independent of each other and be encoded/decode.Particularly, as mentioned above, when the L1 multidate information comprises the L1 multidate information of the L1 multidate information of present frame and next frame, each in the L1 multidate information of the multidate information of optional present frame and next frame is divided, and from the cutting apart of present frame the L1 multidate information ₁with cutting apart of next frame of rear L1 multidate information ₁middle structure be input to encoder, corresponding to the first input information bits of a unit.In addition, L1 multidate information from the cutting apart of present frame ₂with cutting apart of next frame of rear L1 multidate information ₂structure be input to encoder, corresponding to the second input information bits of a unit.In addition, whether no matter need to cut apart, the L1 multidate information of present frame is arranged in the forward part of input information bits, and the L1 multidate information of next frame is arranged in the rear section of input information bits.

Fig. 6 illustrates according to the present invention the embodiment of input, is input to the cutting apart of input information bits of encoder.In Fig. 6, partition value is N _{post_FEC_Block}.

With reference to Fig. 6, after L1-, signaling information 650,, the information bit that is input to encoder comprises the configurable information 600 of L1, and the L1 multidate information 601 of present frame, the L1 multidate information 602 of next frame, extend information 603, CRC (cyclic redundancy check (CRC)) information 604 and L1 fill (padding) bit 605.CRC information 604 comprises the parity check bit of CRC code, and wherein receiver determines in the L1 multidate information 602 of L1 multidate information 601 at the configurable information 600 of L1, present frame, next frame and extend information 603 with this parity check bit whether mistake has occurred.Although not shown in Figure 6, can use a plurality of CRC.Particularly, those skilled in the art are apparent that to number and the position thereof that can change CRC.

The length of the configurable information 600 of L1 is K _{l1_conf}, the length of the L1 multidate information 601 of present frame is K _{l1_dyn, c}, the length of the L1 multidate information 602 of next frame is K _{l1_dyn, n}, the length of extend information 603 is K _{l1_ext}, and the length of CRC604 is N _crc.Work as K _{l1_dyn, n}, that is, the length of the L1 multidate information 602 of next frame equals at 0 o'clock, and the L1 multidate information 602 of next frame is not used in 0 value indication.Work as K _{l1_ext}equal at 0 o'clock, extend information 603 is not used in this indication.Similarly, work as N _crcequal at 0 o'clock, the CRC code is not used in this indication.

K _{l1_conf}, K _{l1_dyn, c}and K _{l1_dyn, n}in each can be expressed as the function of the number of PLP.Otherwise, can know K by predetermined signaling _{l1_conf}, K _{l1_dyn, c}and K _{l1_dyn, n}.For example, each means the parameter of length, such as the L1_POST_CONF_SIZE that means KL1_conf, expression K _{l1_dyn, c}l1_POST_DYN, CURRENT_SIZE, mean K _{l1_dyn, n}l1_POST_DYN, NEXT_SIZE, and mean that the L1_POST_EXT_SIZE of the length of extend information 603 can send by information before L1-105.

When Bose Chaudhuri Hocquenghem (BCH) code is connected with the LDPC code, and the BCH code be connected with the LDPC code is used to the L1 signaling information, and the length of the input bit of BCH code is K _bchthe time, can use following equation (1) to calculate the N corresponding to the number of the code block of L1 signaling information _{post_FEC_Block}.Basically, N _{post_FEC_Block}it is the number of the multi-disc information that is partitioned into of L1 signaling information bit.When considering that BCH code is connected with the LDPC code, the length K of the input bit by the use BCH code _bchcarry out the number of Accounting Legend Code piece.Yet, when only using the LDPC code, can pass through the length K of the input bit of use LDPC code _ldpcrather than K _bchcarry out the number of Accounting Legend Code piece.

In equation (1), K _{post_ex_pad}the L1 multidate information 601 of the configurable information 600 of L1, present frame, the L1 multidate information 602 of next frame, the length of extend information 603 and CRC information 604 and.K _{post_ex_pad}=K _{L1_conf}+K _{L1_dyn,c}+K _{L1_dyn,n}+K _{L1_ext}+N _crc。Namely, K _{post_ex_pad}it is the number of get rid of filling the bit of signaling after the L1-of field.In equation (1),

expression is greater than the integer of the minimum of x.For example,

The N of the number based on corresponding to code block _{post_FEC_Block}, can calculate the K corresponding to the length of having inserted zero bit by using following equation (2) _pad.

In equation (2), expression is greater than the integer of the minimum of x.For example,

can omit the K corresponding to the length of having inserted zero bit _pad.

As above described with reference to figure 3 and Fig. 5, when passing through N _{post_FEC_Block}l1 multidate information 602, extend information 603, CRC604 and the L1 of cutting apart L1 multidate information 601, the next frame of the configurable information 600 of L1, present frame fill 605 each the time, can use following equation (3) to each the length in (6) computed segmentation.

Particularly, can be K by using equation (3) to calculate for length _{l1_conf}the correction coefficient K of the configurable information 600 of L1 _{l1_conf_PAD}.Namely, when the length K of the configurable information of L1 _{l1_conf}not the N corresponding to the number of the code block for cutting apart _{post_FEC_Block}multiple the time, K _{l1_conf_PAD}it is correction coefficient.

In equation (3),

expression is less than the integer of the maximum of x.For example,

k _{l1_conf_PAD}be cause i (i=1 ..., (N _{post_FEC_Block}-1)) the configurable information of L1 in the middle of the encoder input information bits _ithe length of 600b is

and cause (N _{post_FEC_Block}) length of the configurable information 600c of L1 in the middle of the encoder input information bits is

value.

For example,, as KL1_conf=299 and N _{post_FEC_Block}=2 o'clock,

K with value 1 _{l1_conf_PAD}cause the central configurable information of L1 of the first encoder input information bits ₁length be 149, and cause the configurable information of L1 in the middle of the second encoder input information bits ₂length be 149+1=150.These conditions are used for avoiding extra zero padding.

Can be K by using equation (4) to calculate for length as shown in Figure 6 _{l1_dyn, c}the length K of correction coefficient of L1 multidate information 601 of present frame _{l1_dyn, c_PAD}.Length K when the L1 of present frame multidate information 601 _{l1_dyn, c}not the N corresponding to the number of the code block for cutting apart _{post_FEC_Block}multiple the time, K _{l1_dyn, c_PAD}it is correction coefficient.

In equation (4),

expression is less than the integer of the maximum of x.

Can be K by using equation (5) to calculate for length as shown in Figure 6 _{l1_dyn, n}the length K of correction coefficient of L1 multidate information 602 of next frame _{l1_dyn, n_PAD}.Length K when the L1 of next frame multidate information _{l1_dyn, n}not the N corresponding to the number of the code block for cutting apart _{post_FEC_Block}multiple the time, K _{l1_dyn, n_PAD}it is correction coefficient.

In equation (5),

expression is less than the integer of the maximum of x.

As mentioned above, always do not use the L1 multidate information 602 of next frame.In this case, that very natural is K _{l1_dyn, n}should equal 0.When as at equation (3) in equation (5), according to N _{post_FEC_Block}cut apart and there is length K _{l1_ext}extend information 603, there is length N _crccRC604 and there is length K _padl1 while filling each in 605, can use following equation (6) to calculate the length K of filling 605 correction coefficient for extend information 603+CRC604+L1 _{l1_ext_PAD}.

In equation (6), when extend information 603, CRC604 and L1 fill 605 length and be not the N corresponding to the number of the code block for cutting apart _{post_FEC_Block}multiple the time, K _{l1_ext_PAD}correction coefficient, and mean to be less than the maximum integer of x.As mentioned above, always do not use K _pad, and in this case, K _padequal 0.In addition, N _crcmean the CRC bit.

By equation (7) definition, use the value of utilizing equation (1) to (6) to calculate to calculate the K corresponding with the number of i encoder input information bits 670 _sig(i) process.

In equation (7), expression is less than the integer of the maximum of x.For example,

Can calculate (N by using equation (8) _{post_FEC_Block}) number of encoder input information bits 680.

In equation (8),

expression is less than the integer of the maximum of x.

Although cutting apart that the above carries out makes at K _sig(i) (i=1 ..., (N _{post_FEC_Block}-1)) and K _sig(N _{post_FEC_Block}) between have length difference, but can carry out and cut apart so that there is not K _sig(i) (i=1 ..., (N _{post_FEC_Block}-1)) and K _sig(N _{post_FEC_Block}) between length difference.In addition, as mentioned above, can in equation, make a change according to number and the position thereof of the CRC used.

For example, when the CRC code is applied to each in the multidate information 602 of the multidate information 601 of the configurable information 600 of L1, present frame and next frame, K _{l1_conf}, K _{l1_dyn, c}, and K _{l1_dyn, n}the number of CRC bit of multidate information 601 that can comprise respectively number, the present frame of the CRC bit of the configurable information 600 of L1, and the number 602 of the CRC bit of next frame.

In Fig. 6, reference number 690 means the first encoder input information bits to the (N _{post_FEC_Block}) the encoder input information bits, whole encoder input information bits of using equation (1) will mean by reference to numeral 650 to equation (8) are partitioned into the first encoder input information bits to the (N _{post_FEC_Block}) the encoder input information bits.Although usually by encoder, carry out cutting operation, when encoder comprises interleaver, interleaver can be interweaved (cutting apart) to the encoder input information bits (that is, L1 signaling information) after all cutting apart.

More specifically, reference number 690 means: the first encoder input information bits 660 comprises by according to N _{post_FEC_Block}come partition encoding device input information bits 600,601,602,603,604 and 605 and information bit (the L1 filling bit after cutting apart) 600a, the 601a, the 602a that obtain, 603a, 604a and 605a.Reference number 690 means: i encoder input information bits 670 comprises by according to N _{post_FEC_Block}come partition encoding device input information bits 600,601,602,603,604 and 605 and

information bit

600b, 601b, 602b, 603b, 604b and the 605b (it is different from encoder input information bits 650) that obtain.Reference number 690 means: (N _{post_FEC_Block}) encoder input information bits 680 comprises by according to N _{post_FEC_Block}come partition encoding device input information bits 600,601,602,603,604 and 605 and last 600c, 601c, 602c, 603c, 604c and the 605c cut apart in information bit that obtain.

Therefore, receive the receiver decoding of input information bits 690 by the code block of encoder input information bits 660, encoder input information bits 670 and encoder input information bits 680 being encoded and obtaining.Then, receiver is by the L1 multidate information bit 601a after the cutting apart of present frame, 601b and 601c, next frame cut apart rear L1

multidate information bit

602a, 602b and 602c, cut apart the configurable information bit 600a of rear L1,600b and 600c, cut apart rear extend

information bit

603a, 603b and 603c, cut apart

rear CRC bit

604a, 604b and 604c, and cut apart rear

L1 filling bit

605a, 605b and 605c reconfigure as the state before cutting apart.Therefore, receiver can recover signaling information after original L1-.

When receiving system is according to an embodiment of the invention known the length K of the configurable information 600 of L1 _{l1_conf}, present frame the length K of L1 multidate information 601 _{l1_dyn, c}, and the length K of the L1 multidate information 602 of next frame _{l1_dyn, n}the time, receiving system can easily recover signaling information after L1-.In this respect, dispensing device can send K according to an embodiment of the invention _{l1_conf}, K _{l1_dyn, c}and K _{l1_dyn, n}value.Because K _{l1_conf}, K _{l1_dyn, c}and K _{l1_dyn, n}each value can be expressed as the function of the number of PLP, so, if dispensing device sends the number of PLP, receiving system can recover signaling information after L1-.Therefore, for example, when before dispensing device L1-shown in Figure 1, information 105 comprises NUM_PLP (number of the PLP) information corresponding to the number of PLP, receiving system can receive signaling information after L1-effectively.

Even when not carrying out while cutting apart, as shown in Figure 4, if dispensing device sends the number of PLP, even when L1 multidate information 411 sent before the configurable information 410 of L1, receiving system also can recover with the number of PLP signaling information after L1-.In addition, if the L1 multidate information sent in the K frame is identical with the L1 multidate information sent in (K+1) frame, after receiving system recovers the L1-in (K+1) frame during information, whether the L1 multidate information no matter receiving system is decoded in the K frame is successful, and receiving system can use the L1 multidate information of K frame.

Fig. 7 and Fig. 8 illustrate the information bit that is input to according to an embodiment of the invention encoder.In Fig. 7, after the L1 multidate information is positioned in the configurable information of L1.

With reference to Fig. 7, the length of the configurable information 721 of L1 is K _{l1_conf}, the length of the L1 multidate information 722 of present frame is K _{l1_dyn, c}, the length of the L1 multidate information 723 of next frame is K _{l1_dyn, n}, the length of extended field 724 is K _{l1_ext}, and the length of CRC725 is N _crc.

Can operation parameter L1_POST_CONF_SIZE or the number of PLP obtain the length K of the configurable information 721 of L1 _{l1_conf}.Can before L1-, in signaling, send separately or jointly parameter (number of L1_POST_CONF_SIZE or PLP).Can operation parameter L1_POST_DYN, the number of CURRENT_SIZE or PLP obtains the length K of the L1 multidate information 722 of present frame _{l1_dyn, c}.Can before L1-, in signaling, send separately or jointly parameter.Can operation parameter L1_POST_DYN, the number of NEXT_SIZE or PLP obtains the length K of the L1 multidate information 723 of next frame _{l1_dyn, n}.Can before L1-, in signaling, send separately or jointly parameter.The length K that can operation parameter L1_POST_EXT_SIZE obtains extended field 724 _{l1_ext}.The length N of CRC725 _crccan fix, for example, 32.

With reference to Fig. 7, after L1-, signaling 720 comprises the length according to signaling after L1-, the bit of the variable number sent by one or more LDPC pieces.The LDPC piece has the meaning identical with code block.

Use equation (9) to determine the N corresponding with the number of LDPC piece for signaling after L1-720 _{post_FEC_Block}.

In equation (9), when Kbch is more than or equal to K _{post_ex_pad}the time, N _{post_FEC_Block}equal 1.Yet, work as K _{bch is little}in K _{post_ex_pad}the time, N _{post_FEC_Block}be

value A is the K of the number of the information bit in the code block caused after meaning to cut apart _sigbe less than or equal to K _bchcorrection coefficient, and it can change according to the number of the type of divided signal.For example, when the L1 multidate information of the L1 multidate information 722 of the configurable information 721 of L1, present frame, next frame 723 and each in extend information 724 when divided, each in 4 information is divided.Therefore, value A can be 3.

When not using the L1 multidate information 723 of next frame in arbitrary frame, value A can be 2, and still, for the efficiency of system, value A can be fixed as 3.

In equation (9),

expression is equal to or greater than the integer of the minimum of x, and K _bchthe number of value representation BCH information bit.

In above-mentioned situation, when BCH code is connected with the LDPC code, use the length K of the input bit of BCH code _bchcarry out the number of Accounting Legend Code piece.Yet, when only using the LDPC code, can pass through the length K of the input bit of use LDPC code _ldpcrather than K _bchcarry out the number of Accounting Legend Code piece.

K _{post_ex_pad}to pass through the length N of CRC725 _crcadd parameter L 1_POST_CONF_SIZE, the L1_POST_DYN of the length of the length of L1 multidate information 723 of length, next frame of the L1 multidate information 722 of the length that means respectively the configurable information 721 of L1, present frame and extended field 724, CURRENT_SIZE, L1_POST_DYN, NEXT_SIZE and L1_POST_EXT_SIZE and obtain.In addition, K _{post_ex_pad}mean to get rid of the number corresponding to the bit of signaling after the L1-of the L1_PADDING726 that fills field.Maximum length that can be based on signaling after L1-, for example, 32 determine the length N of CRC _crc.In this case, can use following equation (10) to calculate the KL1_PADDING corresponding to the length of field name L1_PADDING726.

K _{L1_PADDING=}K _{L1_conf_PAD}+K _{L1_dyn,c_PAD}+K _{L1_dyn,n_PAD}+K _{L1_ext_PAD}…(10)

In equation (10), KL1_conf_PAD means the length of the filling field of the configurable information of L1, K _{l1_dyn, c_PAD}the length of the filling field of the L1 multidate information of expression present frame, K _{l1_dyn, n_PAD}the length of the filling field of the L1 multidate information of expression next frame, and K _{l1_ext_PAD}mean to comprise the length of filling field of the extended field 724 of CRC725.Can use following equation (11) to (14) to calculate as the L1_CONF_PAD727, the L1_DYN that fill field, C_PAD728, L1_DYN, the length of each in N_PAD729 and L1_EXT_PAD730.

Arrive in (14) K at equation (11) _{l1_conf}, K _{l1_dyn, c}, K _{l1_dyn, n}and K _{l1_ext}difference operation parameter L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, L1_POST_DYN, the value that NEXT_SIZE and L1_POST_EXT_SIZE obtain.These parameters mean respectively the length of L1 multidate information of length, next frame of L1 multidate information of length, present frame of the configurable information of L1 and the length of extended field.N _crccorresponding to the number of CRC bit, for example, 32.When the L1_REPETITION_FLAG of the L1 multidate information that indicates whether to use next frame is set to 0, the length K of the L1 multidate information of next frame _{l1_dyn, n}length be 0.

Can use following equation (15) define with comprise the whole L1-that fills field after the corresponding K of the final lengths of signaling _post.

K _post=K _{post_ex_pad}+K _{L1_PADDING}…(15)

In this case, can use following equation (16) definition with at each N _{post_FEC_Block}the K that the number of the information bit in piece is corresponding _sig.

As shown in Figure 7, for obtaining better performance, the L1 multidate information (for signaling after the dynamic L1 of next frame) 723 of the L1 multidate information of the configurable information of L1 (signaling after configurable L1) 721, present frame (for signaling after the dynamic L1 of present frame) 722 and next frame will distribute as far as possible equably at all forward error corrections (FEC) piece.

Particularly, the input bit of the first generation code block shown in Fig. 7 comprises that the configurable information of a L1 is (configurable ₁or Conf_1) 731, a L1 multidate information of present frame (dynamic, present frame ₁or D, C_1) 732, a L1 multidate information of next frame (dynamic, next frame ₁or D, N_1) the 733 and first extended field (expand 1 or E, C_1) 734.The configurable information 731 of the one L1 comprises in the middle of the bit of the configurable information 710 of L1

bit.The one L1 multidate information 732 of present frame comprises in the middle of the bit of L1 multidate information 722 of present frame

bit.The one L1 multidate information 733 of next frame comprises in the middle of the bit of L1 multidate information 723 of next frame

bit.The first extended field 734 comprises in the middle of the bit of the bit of extended field 724 and CRC725

bit.

According to embodiments of the invention, after L1-, the bit of the bit of the extended field 724 of signaling and CRC725 thereof all is included in the first extended field 734 in the middle of the input bit of first generation code block.By identical method from first generation code block to the (N _{post_FEC_Block}-1) code block is carried out above-mentioned structure.

(N _{post_FEC_Block}) information bit in code block comprises that the configurable information of N is (configurable _nor Conf_N) 739, the N L1 multidate information of present frame (dynamic, present frame _nor D, C_N) 740, the N L1 multidate information of next frame (dynamic, next frame _nor D, N_N) 741, the N extended field (expansion _nor E, C_N) 742 and fill field, such as L1_CONF_PAD727, L1_DYN, C_PAD728, L1_DYN, N_PAD729 and L1_EXT_PAD730.The configurable information 739 of N comprises in the middle of the bit of configurable information 710

bit.The N L1 multidate information 740 of present frame comprises in the middle of the bit of L1 multidate information 722 of present frame bit.The N L1 multidate information 741 of next frame comprises in the middle of the bit of L1 multidate information 723 of next frame bit.N extended field 742 comprises the expansion word

bit.

According to embodiments of the invention, after L1-, the bit of the bit of the extended field 724 of signaling and CRC725 thereof all is included in the first extended field 734 in the middle of the input bit of first generation code block.KL1_ext_PAD is the length of filling field of the bit of the bit of extended field 724 of signaling after L1-and CRC725 thereof.0 can be inserted in the filling field.In addition, can change the position of filling field.

For example, all fill ending place that field can be positioned at coding input, as shown in Figure 8.

According to embodiments of the invention, when at first parameter L 1_POST_EXT_SIZE is set to comprise the value of the length of the length of extended field and CRC, rather than to be set to be only the length of extended field, while then being sent out, and K _{l1_ext}can be regarded as by the length by extended field and N _crcthe value that addition obtains.In this case, can delete whole N _crcs.

Fig. 9 illustrates the information bit that is input to according to an embodiment of the invention encoder.

With reference to Fig. 9, the length of the configurable information 921 of L1 is K _{l1_conf}, the length of the L1 multidate information 922 of present frame is K _{l1_dyn, c}, the length of the L1 multidate information 923 of next frame is K _{l1_dyn, n}, the length of extended field 924 is K _{l1_ext}, and the length of CRC925 is N _crc.

Can operation parameter L1_POST_CONF_SIZE or use the number of PLP to obtain the length K of the configurable information 921 of L1 _{l1_conf}.The length K of the L1 multidate information 922 of present frame _{l1_dyn, c}can operation parameter L1_POST_DYN, CURRENT_SIZE or use the number of PLP to obtain.Can operation parameter L1_POST_DYN, NEXT_SIZE or use the number of PLP to obtain the length K of the L1 multidate information 923 of next frame _{l1_dyn, n}.The length K that can operation parameter L1_POST_EXT_SIZE obtains extended field 924 _{l1_ext}.The length N crc of CRC925 can fix, for example, and 32.In this case, although the length of the length of the length of the L1 multidate information 923 of next frame and extended field 924 or CRC and can be expressed as a parameter, in order to suppose that parameter exists discretely for the purpose of the convenience of description of the invention.

With reference to Fig. 9, after L1-, signaling 920 comprises the length according to signaling after L1-, the bit of the variable number sent by one or more LDPC pieces.The LDPC piece has the meaning identical with the code block shown in Fig. 9.

Use following equation (17) to determine the N corresponding with the number of LDPC piece for signaling after L1-920 _{post_FEC_Block}.

In equation (17), work as K _bchbe more than or equal to K _{post_ex_pad}the time, N _{post_FEC_Block}equal 1.Yet, work as K _bchbe less than K _{post_ex_pad}the time, N _{post_FEC_Block}be

value A is the K caused as the number of the information bit in the code block after cutting apart _sigbe less than or equal to K _bchcorrection coefficient, and it can change according to the number of the type of divided signaling.

For example, when the L1 multidate information 923 of the L1 multidate information 922 of the configurable information 921 of L1, present frame, next frame and each in extend information 924 when divided, each in 3 information is divided.Therefore, value A can be 2.

In equation (17),

expression is equal to or greater than the integer of the minimum of x, and the number of the value representation BCH information bit of Kbch.When BCH code is connected with the LDPC code, use the length K of the input bit of BCH code _bchcarry out the number of Accounting Legend Code piece.Yet, when only using the LDPC code, can pass through the length K of the input bit of use LDPC code _ldpcrather than K _bchcarry out the number of Accounting Legend Code piece.

K _{post_ex_pad}to pass through the length N of CRC925 _crcadd parameter L 1_POST_CONF_SIZE, the L1_POST_DYN of the length of the length of L1 multidate information 923 of length, next frame of the L1 multidate information 922 of the length that means respectively the configurable information 921 of L1, present frame and extended field 924, CURRENT_SIZE, L1_POST_DYN, NEXT_SIZE and L1_POST_EXT_SIZE's and obtain.In addition, K _{post_ex_pad}mean to get rid of the number corresponding to the bit of signaling after the L1-of the L1_PADDING926 that fills field.The length N of can the maximum length based on signaling after L1-determining CRC _crc.

Can use following equation (18) to calculate the K corresponding with the length of field name L1_PADDING926 _{l1_PADDING}.

K _{L1_PADDING}=K _{L1_conf_PAD}+K _{L1_dyn,c_PAD}+K _{L1_ext_PAD}…(18)

In equation (18), K _{l1_conf_PAD}the length that means the filling field of the configurable information of L1, K _{l1_dyn, c_PAD}the length of the filling field of the L1 multidate information of expression present frame, and K _{l1_ext_PAD}mean to comprise the length of filling field of the extended field 924 of the L1 multidate information 923 of next frame and CRC925.Can use equation (19), (20) and (21) to calculate respectively as the L1_CONF_PAD927, the L1_DYN that fill field, the length of C_PAD928 and L1_EXT_PAD930.

Arrive in (21) K at equation (19) _{l1_conf}, K _{l1_dyn, c}, K _{l1_dyn, n}and K _{l1_ext}be can distinguish operation parameter L1_POST_CONF_SIZE,, L1_POST_DYN, the value that NEXT_SIZE and L1_POST_EXT_SIZE obtain.These parameters mean respectively the length of L1 multidate information 923 of length, next frame of L1 multidate information 922 of length, present frame of the configurable information 921 of L1 and the length of extended field 924.N corresponding to the number of CRC bit _crccan be, for example, 32.

When the L1_REPETITION_FLAG of the L1 multidate information that indicates whether to use next frame is set to 0, the length K of the L1 multidate information of next frame _{l1_dyn, n}length equal 0.In this case, the length of the length of the multidate information of next frame and extended field and can be expressed as a parameter.For example, (K _{l1_dyn, n}+ K _{l1_ext}) can be expressed as K _{l1_dyn, n, ext}, and can use each to mean the gain of parameter K of length separately _{l1_dyn, n, ext}(L1_POST_DYN, N, EXT_SIZE).

Can use following equation (22) define with comprise the whole L1-that fills field after the corresponding K of the final lengths of signaling _post.

K _post=K _{post_ex_pad}+K _{L1_PADDING}…(22)

Can use following equation (23) definition and each N _{post_FEC_Block}the K that the number of the information bit in piece is corresponding _sig.

K_{sig} = \frac{K_{post}}{N_{post_FEC_Block}} . . . (23)

As shown in Figure 9, in order to obtain better performance, L1 multidate information (for signaling after the dynamic L1 of next frame) 923 and the extended field 924 of the L1 multidate information of the configurable information of L1 (signaling after configurable L1) 921, present frame (for signaling after the dynamic L1 of present frame) 922, next frame will distribute as far as possible equably at all FEC pieces.

Particularly, the input bit of first generation code block comprises that the configurable information of a L1 is (configurable ₁or Conf_1) 931, a L1 multidate information of present frame (dynamic, present frame ₁or D, C_1) (the expansion of the 932 and first extended field ₁or E, C_1) 934.The configurable information 931 of the one L1 comprises in the middle of the bit of the configurable information 910 of L1

bit.The one L1 multidate information 932 of present frame comprises in the middle of the bit of L1 multidate information 922 of present frame

bit.The first extended field 934 comprises in the middle of the bit of bit of the bit of bit, extended field 924 of the L1 multidate information 923 of next frame and CRC925

bit.By identical method from first generation code block to the (N _{post_FEC_Block}-1) code block is carried out above-mentioned structure.

(N _{post_FEC_Block}) information bit in code block comprises that the configurable information of N is (configurable _nor Conf_N) 939, the N L1 multidate information of present frame (dynamic, present frame _nor D, C_N) 940, the N extended field (expansion _nor E, C_N) 942 and fill field, such as L1_CONF_PAD927, L1_DYN, C_PAD928 and L1_EXT_PAD930.N _{post_FEC_Block}the configurable information 939 of N comprises in the middle of the bit of configurable information 910 bit.The N L1 multidate information 940 of present frame comprises in the middle of the bit of L1 multidate information 922 of present frame

bit.N extended field 942 comprises in the middle of the bit of the bit of bit, extended field 924 of the L1 multidate information 923 of next frame and CRC925

bit.0 can be inserted into the filling field.In addition, the position of filling field can change.For example, fill the ending that field can be positioned at coding input.

According to another embodiment of the present invention, carry out and cut apart when L1 multidate information 723, extended field 724 and the CRC725 of the L1 of present frame multidate information 722, next frame are considered to a field.In this case, L1 multidate information 723 and extended field 724 and CRC725 for next frame, the information that can not obtain in frame before priority of use in present frame, and after L1-, signaling can comprise or can not comprise L1 multidate information 732 and the extended field 724 of next frame.Therefore, the L1 multidate information 723 of next frame, extended field 724 and CRC725 can be considered to a field so that simplification is cut apart, and then can carry out and cut apart.

In this case, correction coefficient A can equal 1 in equation (17).N based on using equation (17) to calculate _{post_FEC_Block}value, can use the length K of equation (24) calculated field L1_PADDING726 _{l1_PADDING}.

K _{L1_PADDING}=K _{L1_conf_PAD}+K _{L1_ext_PAD}…(24)

In equation (24), K _{l1_conf_PAD}the length that means the filling field of the configurable information of L1, K _{l1_ext_PAD}mean to comprise the length of filling field of the extended field 724 of the L1 multidate information 723 of L1 multidate information 722, next frame of present frame and CRC725.Can use equation (25), (26) to calculate respectively as the L1_CONF_PAD that fills field and the length of L1_EXT_PAD.

In equation (25) and (26), K _{l1_conf}, K _{l1_dyn, c}, K _{l1_dyn, n}and K _{l1_ext}difference operation parameter L1_POST_CONF_SIZE, L1_POST_DYN, CURRENT_SIZE, L1_POST_DYN, the value that NEXT_SIZE and L1_POST_EXT_SIZE calculate.These parameters mean respectively the length of L1 multidate information 723 of length, next frame of L1 multidate information 722 of length, present frame of the configurable information 721 of L1 and the length of extended field 724.N corresponding to the number of CRC bit _crccan be, for example, 32.

When the L1_REPETITION_FLAG of the L1 multidate information that indicates whether to use next frame is set to 0, the length K of the L1 multidate information of next frame _{l1_dyn, n}length equal 0.In this case, the multidate information of the length of the multidate information of present frame, next frame length and the length of extended field and can be expressed as a parameter.

According to another embodiment of the present invention, after L1-, signaling does not comprise extended field 724.In this case, K _{l1_ext}value become 0, and only the rear bit of cutting apart of crc field 725 is included in the extended field 734,738 and 742 be input in the middle of cutting apart of code block rear information bit.In this case, the number of cutting apart rear bit of crc field may be very little, thus at first cut apart extended field 724 and crc field 725 then the extended field from cutting apart 724 and cut apart after crc field 725 build that extended fields 734,738 and 742 may poor efficiencys.Therefore, in this case, may be to utilize the L1 multidate information 723 of next frame to cut apart crc field 725 more efficiently.

Particularly, substitute and cut apart extended field 724 and crc field 725 (because the value of extended field equals 0) simultaneously, L1 multidate information 723 and the crc field 725 that can cut apart next frame simultaneously, then the L1 multidate information from the cutting apart of next frame 723 and cut apart after crc field 725 build a L1 multidate information 733 of next frame, the 2nd L1 multidate information 737 of next frame and the (N of next frame _{post_FEC_Block}) L1 multidate information 741.

According to another embodiment of the present invention, there do not is the L1 multidate information 723 of extended field and next frame.In this case, as described in above-mentioned example, the number of cutting apart rear bit of crc field may be very little, thereby cut apart, may be poor efficiency.Therefore, in this case, utilize the L1 multidate information 722 of present frame to cut apart crc field 725, then the L1 multidate information 722 after the cutting apart of the crc field from cutting apart 725 and present frame builds a L1 multidate information 731 of present frame, the second multidate information 735 of present frame and the (N of present frame _{post_FEC_Block}) multidate information 739.

Figure 10 is the flow chart that the method for by dispensing device, encoding and send control information is shown according to an embodiment of the invention.

With reference to Figure 10, in step 1000, dispensing device is determined the L1 signaling information, and signaling information after the front information of generation L1-and L1.Yet, because signaling information after the L1-that the present invention relates to encode, so the coding of the front information of L1-will not be described in following description.

In step 1002, the number of the bit of signaling information after the L1-of the definite eliminating filling of dispensing device field.In step 1004, after the L1-of dispensing device based on get rid of filling field, the number of the bit of signaling information and coding units are identified for sending the number of the code block of signaling bit after L1-.Herein, to be encoder carry out the size of first encoding based on it to coding units, and here also is called " number of encoder input information bits ".When Bose-Chaudhuri-Hocquenghem Code and LDPC coding is connected, coding units is the number that allows to be input to the information bit of Bose-Chaudhuri-Hocquenghem Code device, and therefore, also is called the BCH information bit.The number of in addition, get rid of filling the bit of signaling information after the L1-of field equal the number of bit of L1 multidate information of number, next frame of bit of L1 multidate information of number, present frame of the bit of the configurable information of L1 and CRC and extended field bit number and.

In step 1006, dispensing device is cut apart signaling information after L1-according to the number of definite code block.Splitting scheme can be used equation as above.

More specifically, in step 1006, at first, for each (bit of the bit of the L1 multidate information of the bit of the configurable information of L1, present frame, the L1 multidate information of next frame and the bit of CRC and extended field) in multi-disc information, by the number of the filling bit corresponding to correction coefficient, make calculating.Number by whole filling bits of signaling after the first calculating number to the four calculating number phase Calais acquisition L1-of the filling bit by multi-disc information.

Afterwards, calculate the number of the bit of signaling after L1-with the number of the bit of signaling information after the number of the filling bit of signaling after the L1-that get rid of to fill field and L1-.After the L1 that can calculate by the division of the number according to code block, the number of the bit of signaling obtains the number for the input bit of each code block.In other words, carry out coding by signaling bit after the as many L1-of number of the input bit to encoder input and acquisition.

Next, cut apart each (bit of the bit of the L1 multidate information of the bit of the configurable information of L1, present frame, the L1 multidate information of next frame and the bit of CRC and extended field) in above-mentioned multi-disc information according to the number of definite code block, and structure is used for it, and each has the input bit of the code block of the length corresponding with the number of the input bit obtained.In each in above-mentioned multi-disc information, the number of the group of the input bit for code block of structure equals the number of definite code block.

In step 1008, dispensing device is at the first encoder input information bits to the (N _{post_FEC_Block}) be included in step 1006 signaling information after the L1-after cutting apart in each of encoder input information bits.In step 1010, transmitter is to the first encoder input information bits to the (N _{post_FEC_Block}) the encoder input information bits encoded, and then to receiver, sends first generation code block to the (N _{post_FEC_Block}) code block.

In step 1012, send the number of the number of number, code block of the bit of signaling information after L1-or PLP to receiving system at dispensing device after, move on to next frame in step 1014, and for next frame repeating step 1000 to step 1012.

In Figure 10, although step 1012 has been described as carrying out after having carried out step 1010, step 1012 can be carried out before step 1010.In addition, although dispensing device has been described as in step 1012 sending to receiving system number, the number of code block or the number of PLP of the bit of signaling information after L1-, but dispensing device also can send full detail, or it can only send some information (for example, the number of PLP).

For example, in broadcast/communication system according to an embodiment of the invention, the number of the bit of signaling information and while about the information (LDPC code word size and code check) of signaling code, not sending the number of code block after dispensing device sends L1-, receiving system can be by estimating the number of code block by this information.

Figure 11 illustrates according to an embodiment of the invention, for the flow chart of the method by the receiving system receiving control information.

With reference to Figure 11, in step 1100, receiving system receives the L1 signaling information of present frame.In step 1102, at least one after the L1-that the receiving system acquisition sends in present frame in the number of the number of the number of the bit of signaling information, code block and PLP.Herein, receiving system can be from dispensing device receives L1-the number of the bit of signaling information or the number of code block, maybe can use predetermined information.This option can change according to the user of system.In addition, although also in step 1100, receive information before L1-, the present invention relates to signaling information after L1-, and before L1-, information exchange is crossed by the scheme of having applied broadcast/communication system execution of the present invention and is processed.Therefore, being described in more detail information before omission L1-.

In step 1104, the code block that the receiving system decoding receives.In step 1106, receiving system extracts the signaling information bit after rear L1-of cutting apart in each in the code block be included in decoding, and, in step 1008, after receiving system is recombine in the L1-extracted in step 1106, the signaling information bit is in order to turn back to the state before cutting apart.

In step 1110, receiving system use after the L1-reconfigured the signaling information bit in step 1108 and after the L1-received in step 1100 the L1 signaling information signaling information receive data.

In step 1112, receiving system moves on to next frame, and for next frame repeating step 1100 to the operation in step 1110.

Figure 12 illustrates the block diagram of dispensing device 1200 according to an embodiment of the invention.

With reference to Figure 12, L1 signaling information maker 1202 generates the L1 signaling information of present frame.Particularly, L1 signaling information maker 1202 generates before L1-signaling information after information and L1-, and signaling information after the L1 of information and generation before the L1-generated to encoder 1204 outputs.Yet because signaling information after the L1-that the present invention relates to encode, and before L1-, information exchange is crossed and has been applied broadcast/communication system coding of the present invention, so will not describe in more detail the front information of L1-herein.

That controller 1206 is determined is that generate by L1 signaling information maker 1202, get rid of the number of the bit of signaling information after the L1-that fills field.The number of controller 1206 based on having got rid of the number of filling the bit of signaling information after field and L1-coding units, definite and be identified for sending the code block of signaling bit after L1-.In addition, controller 1206 can be determined the number of PLP.

When controller 1206 is determined the number of code blocks, it cuts apart signaling information after L1-according to the number of definite code block.In addition, when encoder 1204 comprises interleaver, controller 1206 is controlled interleavers and is cut apart signaling information after L1-.Otherwise controller 1206 can be controlled L1 signaling information maker 1202 and cuts apart signaling information after L1-.Splitting scheme can be used above-mentioned equation.

More specifically, for each (bit of the bit of the L1 multidate information of the bit of the configurable information of L1, present frame, the L1 multidate information of next frame and bit of CRC and extended field) in multi-disc information, at first controller 1206 calculates the number corresponding to the filling bit of correction coefficient.Controller is then by the number by whole filling bits of signaling after four calculating number phase Calais acquisition L1-of first calculating number to the of the filling bit of multi-disc information.After the L1-that controller use to obtain the number of the filling bit of signaling and get rid of the L1-of definite filling field after the number of bit of signaling information, calculate the number of whole bits of signaling after L1-.Can divide by the number of definite code block the number of the bit of signaling after the L1-of calculating, thereby obtain the number of the input bit that each code block needs.In other words, carry out coding by signaling bit after the as many L1-of number of the input bit to encoder input and acquisition.

Controller, and builds for its each and has the input bit of the code block of the length corresponding with the number of the input bit obtained to cut apart multi-disc information (bit of the bit of the L1 multidate information of the bit of the configurable information of L1, present frame, the L1 multidate information of next frame and the bit of CRC and extended field) according to the number executive control operation of definite code block.The number of the group of the input bit for code block built equals the number of definite code block.

Controller 1206 controlled encoders 1204 or L1 signaling information maker 1202, with at the first encoder input information bits to the (N _{post_FEC_Block}) each of encoder input information bits comprises signaling information after the L1-after cutting apart.Encoder 1,204 first encoder input information bits to the (N that at first encodes _{post_FEC_Block}) the encoder input information bits, then to transmitter 1208 output first generation code block to the (N _{post_FEC_Block}) code block.Transmitter 1208, according to the control of controller 1206, be take and sent frame by frame code block as basis to receiving system.In addition, transmitter 1208 can send the number of definite PLP according to controller 1206 to receiving system.

Figure 13 illustrates the block diagram of receiving system 1300 according to an embodiment of the invention.

With reference to Figure 13, receiver 1302 receives the L1 signaling information of present frame, and the L1 signaling information of the present frame received to decoder 1304 outputs.In addition, receiver 1302 is received at least one in the number of the number of number, code block of the bit of signaling information after the L1-sent in present frame and PLP, and the data that receive to controller 1306 outputs.Herein, controller 1306 can be from dispensing device receives L1-the number, the number of code block of the bit of signaling information, or the number of PLP, maybe can be used predetermined information.This option can change according to the user of system.In addition, although receiver 1302 also receives the front information of L1-, but because the present invention relates to signaling information after L1-, and before L1-, information exchange is crossed by having applied the scheme that broadcast/communication system of the present invention carries out and is processed, so will omit being described in more detail of the front information of L1-.

The code block that decoder 1304 decodings receive.

According to embodiments of the invention, controller 1306 is carried out for extracting the control operation of cutting apart signaling information bit after rear L1-in each of the code block that is included in decoding.Reformer 1308 reconfigures according to signaling information bit after the L1-of the control extraction of controller 1306, in order to turn back to the state before cutting apart.Namely, one in the number of the number of controller 1306 by the bit with signaling information after L1-, code block and the number of PLP is carried out the computed segmentation value, and the partition value calculated to reformer 1308 notices.Therefore, controller 1306 enables the recovery of signaling information after original L1 by carrying out on the contrary the processing of being carried out by dispensing device.

Controller 1306 is controlled receivers 1302, with signaling information bit after the L1-reconfigured and after L1-the L1 signaling information signaling information receive data.

As mentioned above, although the configurable information of L1 and L1 multidate information are called as " signaling information after L1-", this indication is the term used when the present invention is applied to DVB-T2 (digital video broadcast-terrestrial 2).Therefore, when the present invention is applied to DVB-C2 (digital cable video broadcasting 2), the configurable information of L1 and L1 multidate information can also be called as " part II signaling information ".

In addition, above-described embodiments of the invention can also be embodied as can be by computer recording the code in non-instantaneous computer recordable recording medium.

For example, computer recordable recording medium can be can stored energy by the optional data memory device of the data of computer system reads.

The example of non-instantaneous computer recordable recording medium comprises read-only memory (ROM), random access memory (RAM), compact disk (CD), tape, floppy disk and optical data storage.Yet the present invention is not limited to these examples.

According to above-described embodiments of the invention, the transmitter coding control information is effectively to change control information, thereby receiver can improve decoding performance.

Although with reference to particular implementation of the present invention, exemplify and described the present invention, it will be understood to those of skill in the art that and can carry out the various changes on formal and details to it in the situation that can not break away from the spirit and scope of the present invention.Therefore, the spirit and scope of the present invention are not limited to described embodiments of the invention, but are limited by claim and equivalent thereof.

Claims

1. one kind for being sent the method for signaling information by transmitter in the broadcast/communication system, and described method comprises:

Generation comprises the signaling information of a plurality of;

The number of the number of the bit based on signaling information and encoder input information bits determines that signaling information is by the code block number be encoded into;

Number based on code block is cut apart every signaling information;

Build the input information bits of each code block, to comprise the part after the cutting apart of every signaling information;

Input information bits is encoded in each code block; And

Send each code block.

2. one kind for being received the method for signaling information by receiver in the broadcast/communication system, and described method comprises:

Receive the code block of signaling information;

The number of the number of the bit of acquisition signaling information or the code block of signaling information;

The decoding code block;

Extraction is included in the rear signaling information bit of cutting apart in the code block of decoding; And

The rear signaling information bit of cutting apart extracted is returned to the state before cutting apart.

3. as claim 1 or 2 described methods, wherein said signaling information comprises layer 1 (L1) configurable information and L1 multidate information.

4. method as claimed in claim 3, wherein said L1 multidate information comprises the L1 multidate information of present frame and the L1 multidate information of next frame.

5. method as claimed in claim 3, wherein said signaling information further comprises extended field, cyclic redundancy check (CRC) (CRC) field and fills at least one in field.

6. as claim 1 or 2 described methods, wherein by the number of following equation definition code block:

N wherein _pos_ _tFEC_ _blockthe number that means code block, K _post_ _ex_ _padmean to get rid of the number of the signaling bit of filling field, K _bchcorresponding to coding units and presentation code device, take once as the number of the bit of unit encoding, K _bchmeaning as Bose Chaudhuri Hocquenghem(BCH) coding and low-density checksum (LDPC) allow to be input to the number of the BCH information bit of Bose-Chaudhuri-Hocquenghem Code device when encoding and being connected, and A means correction coefficient.

7. method as claimed in claim 5, fill the length of field by following equation definition:

K _{L1_PADDING}=K _{L1_conf_PAD}+K _{L1_dyn,c_PAD}+K _{L1_dyn,n_PAD}+K _{L1_ext_PAD,}

K wherein _{l1_PADDING}mean to fill the length of field, K _{l1_conf_PAD}the length that means the filling field of the configurable information of L1, K _{l1_dyn, c_PAD}the length of the filling field of the L1 multidate information of expression present frame, K _{l1_dyn, n_PAD}the length of the filling field of the L1 multidate information of expression next frame, and K _{l1_ext_PAD}mean to comprise the length of filling field of the extended field of CRC.

8. method as claimed in claim 7, wherein define K by following equation _{l1_conf_PAD}:

Wherein by following equation definition K _{l1_dyn, c_PAD}:

Wherein by following equation definition K _{l1_dyn, n_PAD}:

and

Wherein by following equation definition KL1_ext_PAD:

K wherein _{l1_conf}the length that means the configurable information of L1, K _{l1_dyn, c}the length that means the L1 multidate information of present frame, K _{l1_dyn, n}the length that means the L1 multidate information of next frame, K _{l1_ext}the length that means extended field, and N _crcthe length that means crc field.

9. as claim 1 or 2 described methods, wherein by following equation, define the length of the input information bits of each code block:

K_{sig} = \frac{K_{post}}{N_{post_FEC_Block}},

K wherein _sigthe length that means the input information bits of each code block, N _{post_FEC_Block}the number that means code block, and by following equation definition K _post:

K _post=K _{post_ex_pad}+K _{L1_PADDING,}

K wherein _{post_ex_pad}mean to get rid of the number of the signaling bit of filling field, and K _{l1_PADDING}mean to fill the length of field.

10. one kind for sending the device of signaling information in the broadcast/communication system, and described device comprises:

Layer 1 (L1) signaling information maker, comprise the signaling information of multi-disc for generation;

Controller, determine that for the number of the bit based on signaling information and the number of encoder input information bits signaling information is by the code block number be encoded into;

Encoder, cut apart every signaling information for the number based on code block, and the input information bits that builds each code block to be to comprise the part after the cutting apart of every signaling information, and input information bits is encoded to each code block; And

Transmitter, for sending each encoding block.

11. one kind for receiving the device of signaling information in the broadcast/communication system, described device comprises:

Receiver, for receiving the code block of signaling information;

Decoder, for the code block of decoding;

Controller, for the number of the code block of the number of the bit that obtains signaling information or signaling information, and extract the rear signaling information bit of cutting apart in the code block that is included in decoding; And

Reformer, be recombined into the state before cutting apart for the signaling information bit by after cutting apart.

12., as claim 10 or 11 described devices, wherein said signaling information comprises layer 1 (L1) configurable information and L1 multidate information.

13. device as claimed in claim 12, wherein said L1 multidate information comprises the L1 multidate information of present frame and the L1 multidate information of next frame.

14. device as claimed in claim 12, wherein said signaling information further comprises extended field, cyclic redundancy check (CRC) (CRC) field and fills at least one in field.

15. as claim 10 or 11 described devices, wherein by the number of following equation definition code block:

N wherein _{post_FEC_Block}the number that means code block, K _{post_ex_pad}mean to get rid of the number of the signaling bit of filling field, K _bchcorresponding to coding units and presentation code device, take once as the number of the bit of unit encoding, K _bchmeaning as Bose Chaudhuri Hocquenghem(BCH) coding and low-density checksum (LDPC) allow to be input to the number of the BCH information bit of Bose-Chaudhuri-Hocquenghem Code device when encoding and being connected, and A means correction coefficient.

16. the described device of described device 14 defines the length of filling field by following definitions:

17. the described device of described device 16, wherein define K by following definitions _{l1_conf_PAD}:

Wherein by following definitions, define K _{l1_dyn, c_PAD}:

Wherein by following definitions, define K _l1_ _dyn, _n_ _pAD:

and

Wherein by following definitions, define K _{l1_ext_PAD}:

18. as claim 10 or 11 described devices, wherein by the length of the input information bits as each code block of giving a definition:

K_{sig} = \frac{K_{post}}{N_{post_FEC_Block}},

K wherein _sigthe length that means the input information bits of each code block, N _{post_FEC_Block}the number that means code block, and by as the K that gives a definition _post:

K _post=K _{post_ex_pad}+K _{L1_PADDING,}