CN101990292A - Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system - Google Patents
Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system Download PDFInfo
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Abstract
The invention discloses a method for coding, mapping, receiving and dispatching a transport format combination indicator (TFCI) in a time division-synchronization code division multiple access (TD-SCDMA) system, which reduces the wasting of resources and improves the transmission efficiency of the TFCI. The invention is characterized in that in the coding method, the pre-coding operation is carried out on a plurality of original TFCI bits, and then the information bits subjected to pre-coding as supplemental bits inserted before TFCI coding are inserted into the corresponding positions in the original TFCI bits. The invention is applied in the field of mobile communication.
Description
Technical field
The present invention relates to a kind of code processing method of 3G communication system, relate in particular to the code processing method that improves TFCI (Transport Format Combination Indicator, transformat combination indication) transmission performance in a kind of TD-SCDMA system.
Background technology
Process along with global economic integration and social informatization, mobile communication business and mobile communication subscriber are the trend of rapid growth, mobile communication is individualized, intelligent in order to adapt to, the demand of multimedization, has proposed 3-G (Generation Three mobile communication system) (being called for short " 3G ").TD-SCDMA is one of 3 main standard of existing 3G system, is the international communication standard that is proposed first by China.The 3G system that has independent intellectual property right as China, TD-SCDMA is the public land mobile communication system of a kind of employing TDD (time division duplex) pattern and intelligent antenna technology, also be the 3G system of unique employing SCDMA (synchronization CDMA) and LCR (low spreading rate) technology, adopted series of new techniques.Along with the continuous development of the communication technology and user raising day by day to quality of service requirement, the 3G standard of initial version can not satisfy user's needs, therefore constantly evolution forward, such as HSDPA (HighSpeed Downlink Packet Access, high speed downlink packet access technology) is exactly a kind of enhanced scheme that 3GPPRelease 5 proposes, main purpose is the high speed support to Packet data service, and obtaining lower time delay, higher throughput of system and stronger QoS (Quality ofService, service quality) guarantees; And be exactly in the corresponding high speed data transfer agreement of up direction at the HSUPA (High Speed U plinkPacket Access, High Speed Uplink Packet inserts) that Release 6 proposes.
In the TD-SCDMA system, physical channel adopts four-layer structure: system-frame, radio frames (RadioFrame), subframe (Subframe) and time slot (Timeslot)/sign indicating number.Time slot is used for distinguishing the different user signal on time domain and sign indicating number territory, and it has TDMA (Time Division Multiple Access, time division multiple access) characteristic.Fig. 1 has provided the signal format of the physical channel of TD-SCDMA.
The length of a radio frames is 10ms, is divided into two 5ms subframes, and the structure of 2 subframes in every 10ms frame length is identical.Physical channel is a Burst Channel, the particular time-slot emission in the radio frames that is assigned to.The distribution of radio frames can be continuous, and promptly the time slot of each frame can be distributed to physical channel, also can be discontinuous distribution, promptly only has the part time slot allocation in the radio frames to give physical channel.A burst is made up of data division, training sequence (being the midamble sign indicating number) part and a protection time slot; only form in the next burst of MBMS (Multimedia Broadcast Multicast Service, multimedia broadcast multi-broadcasting business) special carrier situation by training sequence (being the preamble sign indicating number) and data division.The duration of a burst is exactly a time slot; comprise two data blocks, one long be the training sequence code block of 144 chips and a protection at interval; the data field length of burst is 352 chips; corresponding symbolic number is relevant with spreading factor; protection length at interval is 16 chips, and the structure of burst as shown in Figure 2.
In the TD-SCDMA system, transformat combination indication TFCI can send at the uplink and downlink time slot.To each user, TFCI information will send once in every 10ms radio frames.TFCI symbol behind the coding is in two subframes and be equally distributed in the data block.TFCI symbol behind the coding or send in adjacent training sequence code territory perhaps sends behind SS (Synchronisation Shift, simultaneous bias) and TPC (Transmit Power Control, transmission power control) symbol.If do not have TPC and SS information to transmit, TFCI just directly distributes the interior training sequence code territory of 5ms subframe in the frame adjacent with institute.Figure 3 shows that the position, TFCI territory when not having TPC and SS, if Fig. 4 has shown the position in the TFCI territory when transmitting control signal SS and TPC.
The above is the TFCI transmission in the conventional time slot of TD-SCDMA, and the TFCI in MBMS business time-slot and the special time slot sends similarly, specifically can be with reference to 3GPP TS25 series related protocol.
In the TD-SCDMA system, according to the length difference of TFCI, it is alternative to have three kinds of different encoding schemes, is applied to long TFCI, short TFCI and the TFCI that extremely lacks respectively.When TFCI adopted QPSK modulation and 8PSK modulation respectively, three kinds of different encoding schemes simply were described below, specifically can be referring to 3GPP TS25.222 agreement.：
When A.TFCI adopts the QPSK modulation
(1) than long TFCI coding (6～10 bit)
(32,10) subcode with second order Reed-Muller sign indicating number is encoded to TFCI, obtains 32 emission bit N=32.If TFCI less than 10 bits need expand to 10 long code words with it by mend 0 in the high position of this code word.The code word of (32,10) subcode of second order Reed-Muller sign indicating number is the linear combination of the partial sequence of 10 basic sequences.
(2) than short TFCI coding (3～5 bit)
If the TFCI bit number is between 3 to 5, TFCI obtains 16 emission bit N=16 with (16,5) bi-orthogonal codes coding.If TFCI less than 5 bits need expand to 5 long code words with it by mend 0 in its highest order.The code word of (16,5) bi-orthogonal codes is the linear combination of 5 basic sequences defining in the agreement.
(3) TFCI (1～2 bit) that extremely lacks
If the bit number of TFCI is 1 or 2, need use repeating transmission when then encoding.In this case, each bit is repeated 4 times, if having only 1 TFCI bit, then obtains 4 emission bit N=4), if 2 TFCI bits are arranged, then obtain 8 emission bits (N=8).
Bit number in the TFCI word is designated as N, and the bit in the code word is designated as b
k, k=0 wherein ..., N-1.Bit number N in the TFCI word is 8,16, and 32 o'clock, the TFCI word to the mapping of TFCI bit position as shown in Figure 5; When the bit number among the TFCI is 4, the TFCI word is divided into two parts, distribute to two continuous subframes, and be mapped to the afterbody of first data area of each continuous subframes, the second portion and the 4th part that are TFCI are not used, first and third part have only been used, as shown in Figure 6; TFCI sees Fig. 3 and Fig. 4 in first to the 4th position of part in time slot.
When B.TFCI adopts the 8PSK modulation
If the business of emission 2Mbps, TFCI will adopt the modulation of 8PSK.
(1) than long TFCI coding (6～10 bit)
(64,10) subcode with second order Reed-Muller sign indicating number is encoded to TFCI, and 16 bits that are perforated, and finally obtains 48 emission bit N=48.If TFCI less than 10 bits need expand to 10 long code words with it by mend 0 in the high position of this code word.The code word of (64,10) subcode of second order Reed-Muller sign indicating number is the linear combination of the partial sequence of 10 basic sequences.
(2) than short TFCI coding (3～5 bit)
If the TFCI bit number is between 3 to 5, TFCI encodes with (32,5) single order Reed-Muller sign indicating number, and 8 bits that are perforated, and finally obtains 24 emission bit N=24.If TFCI less than 5 bits need expand to 5 long code words with it by mend 0 in its highest order.The code word of (32,5) single order Reed-Muller sign indicating number is the linear combination of 5 basic sequences defining in the agreement.
(3) TFCI (1～2 bit) that extremely lacks
If the bit number of TFCI is 1 or 2, need use repeating transmission when then encoding.In this case, each bit is repeated 6 times, if having only 1 TFCI bit, then obtains 6 emission bit N=6), if 2 TFCI bits are arranged, then obtain 12 emission bits (N=12).
Bit number in the TFCI word is designated as N, and the bit in the code word is designated as b
k, k=0 wherein ..., N-1.Bit number N in the TFCI word is 12,24, and 48 o'clock, the TFCI word to the mapping of TFCI bit position as shown in Figure 7; When the bit number among the TFCI is 6, the TFCI word is divided into two parts, distribute to two continuous subframes, and be mapped to the afterbody of first data area of each continuous subframes, the second portion and the 4th part that are TFCI are not used, first and third part have only been used, as shown in Figure 8; TFCI sees Fig. 3 and Fig. 4 in first to the 4th position of part in time slot.
As mentioned above, according to existing TD-SCDMA agreement, no matter which kind of modulation system TFCI adopts, before TFCI encodes, if the bit number of TFCI is some value (as 3,4,6,7,8,9 etc.), then need to be complemented into 5 or 10 (hereinafter referred to as " supplying bit ") with 0 bit number with TFCI, these supply the bit of bit and original TFCI, and it doesn't matter, just for the ease of coding, cause the wasting of resources, reduced the efficiency of transmission of TFCI, and receiving terminal can not utilize the transmission performance of supplying bit raising TFCI; If these supply bit is not to be fixed as 0, but be arranged to have the bit information of certain relation, then can when receiving, utilize this relation to improve transmission performance with original TFCI.In addition, when TFCI was 1 bit, the TFCI word that forms later on through repeated encoding was divided into two parts, be mapped to the first and the third part in the TFCI territory of two continuous subframes, and the second portion in the TFCI territory of these two subframes and the 4th part free time do not use, and cause the wasting of resources; If TFCI word that can repeated encoding is later is mapped to first to the 4th part in the TFCI territory of two subframes, then not only can avoids the wasting of resources, and help improving the transmission performance of TFCI.In sum, how effectively to utilize the above-mentioned bit of supplying, and when TFCI is 1 bit, how to utilize the second portion and the 4th part in the TFCI territory of two continuous subframes, improving the transmission performance of TFCI, avoid the wasting of resources, is the problem that the present invention need solve.
Summary of the invention
The objective of the invention is to address the above problem, a kind of coding method of TD-SCDMA system transmissions format combination indication is provided, reduced the wasting of resources, improved the efficiency of transmission of TFCI.
Another object of the present invention is to provide a kind of sending method of TD-SCDMA system transmissions format combination indication.
Another purpose of the present invention has been to provide a kind of method of reseptance of TD-SCDMA system transmissions format combination indication.
Another purpose of the present invention has been to provide a kind of method of sending and receiving of TD-SCDMA system transmissions format combination indication.
Another purpose of the present invention has been to provide the mapping method in a kind of TD-SCDMA system transmissions format combination indication bit cataloged procedure.
Another purpose of the present invention has been to provide a kind of sending method of TD-SCDMA system transmissions format combination indication bit.
Another purpose of the present invention has been to provide a kind of method of reseptance of TD-SCDMA system transmissions format combination indication bit.
Another purpose of the present invention has been to provide a kind of method of sending and receiving of TD-SCDMA system transmissions format combination indication bit.
Technical scheme of the present invention is: the present invention has disclosed a kind of coding method of TD-SCDMA system transmissions format combination indication, it is characterized in that, the transformat combination indication bit that several are original is carried out the operation of predictive encoding, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit.
According to an embodiment of the coding method of TD-SCDMA system transmissions format combination of the present invention indication, several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
According to an embodiment of the coding method of TD-SCDMA system transmissions format combination of the present invention indication, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
The present invention has also disclosed a kind of sending method of TD-SCDMA system transmissions format combination indication, and this sending method comprises:
Obtain original transformat combination indication bit from high level;
Judge whether in original transformat combination indication bit, to insert and supply bit, insert if desired and supply bit, then will carry out a predictive encoding operation with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit, send after then finishing the encoding process of transformat combination indication bit; Do not supply bit if do not need to insert, to send after then directly finishing the encoding process of transformat combination indication bit.
According to an embodiment of the sending method of TD-SCDMA system transmissions format combination of the present invention indication, several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
According to an embodiment of the sending method of TD-SCDMA system transmissions format combination of the present invention indication, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
The present invention has also disclosed a kind of method of reseptance of TD-SCDMA system transmissions format combination indication, and this method of reseptance comprises:
Finish the decoding processing of transformat combination indication bit;
Judged whether to supply bit, if supply bit, then will supply bit takes out, handle with the relation of corresponding original transformat combination indication bit according to supplying bit in the predictive encoding operation, recover original transformat combination indication bit, handle according to the transformat combination indication bit that obtains at last; If do not supply bit, then directly handle according to decoded transformat combination indication bit.
According to an embodiment of the method for reseptance of TD-SCDMA system transmissions format combination of the present invention indication, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
The present invention has disclosed a kind of method of sending and receiving of TD-SCDMA system transmissions format combination indication again, and method of sending and receiving comprises:
Process of transmitting:
Obtain original transformat combination indication bit from high level;
Judge whether in original transformat combination indication bit, to insert and supply bit, insert if desired and supply bit, then will carry out a predictive encoding operation with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit, send after then finishing the encoding process of transformat combination indication bit; Do not supply bit if do not need to insert, to send after then directly finishing the encoding process of transformat combination indication bit;
Receiving course:
Finish the decoding processing of transformat combination indication bit;
Judged whether to supply bit, if supply bit, then will supply bit takes out, handle with the relation of corresponding original transformat combination indication bit according to supplying bit in the operation of the predictive encoding of process of transmitting, recover original transformat combination indication bit, handle according to the transformat combination indication bit that obtains at last; If do not supply bit, then directly handle according to decoded transformat combination indication bit.
According to an embodiment of the method for sending and receiving of TD-SCDMA system transmissions format combination of the present invention indication, several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
According to an embodiment of the method for sending and receiving of TD-SCDMA system transmissions format combination of the present invention indication, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
The present invention has disclosed the mapping method in a kind of TD-SCDMA system transmissions format combination indication bit cataloged procedure again, is transformat combination directive after 1 transformat combination indication bit encoded is mapped to transformat combination indication territory by a mapping ruler first to the 4th part with original bit number.
Embodiment according to the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
Embodiment according to the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
According to an embodiment of the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, original bit number is that the cataloged procedure of 1 transformat combination indication bit comprises:
To carry out the operation of predictive encoding with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit.
The present invention has disclosed a kind of sending method of TD-SCDMA system transmissions format combination directive again, and sending method comprises:
Finish the encoding process of transformat combination indication bit;
Whether the bit number of judging original transformat combination indication equals 1, if bit number equals 1 then transformat combination directive after will encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and finish the transmission of mapping back, if bit number is not equal to 1 then transformat combination directive after will encoding is mapped to the first and the third part in transformat combination indication territory, and send finishing the mapping back.
Embodiment according to the sending method of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
Embodiment according to the sending method of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention has disclosed a kind of method of reseptance of TD-SCDMA system transmissions format combination directive again, and method of reseptance comprises:
First go mapping to handle with what finish transformat combination indication territory to tetrameric transformat combination directive;
Whether the bit number of judging original transformat combination indication bit is 1, if bit number is 1, then transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory merge according to mapping ruler, obtain original transformat combination indication bit through decoding then, if bit number is not 1 then directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
Embodiment according to the method for reseptance of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
Embodiment according to the method for reseptance of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention has also disclosed a kind of method of sending and receiving of TD-SCDMA system transmissions format combination directive, and this method comprises:
Process of transmitting:
Finish the encoding process of transformat combination indication bit;
Whether the bit number of judging original transformat combination indication equals 1, if bit number equals 1 then transformat combination directive after will encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and finish the transmission of mapping back, if bit number is not equal to 1 then transformat combination directive after will encoding is mapped to the first and the third part in transformat combination indication territory, and send finishing the mapping back;
Receiving course:
First go mapping to handle with what finish transformat combination indication territory to tetrameric transformat combination directive;
Whether the bit number of judging original transformat combination indication bit is 1, if bit number is 1, then transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory merge according to mapping ruler, obtain original transformat combination indication bit through decoding then, if bit number is not 1 then directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
Embodiment according to the method for sending and receiving of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
Embodiment according to the method for sending and receiving of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention contrasts prior art, and following beneficial effect is arranged: technical scheme of the present invention is utilized the bit of supplying of the preceding insertion of the TFCI of TD-SCDMA system coding, improves the resource utilization and the spectrum efficiency of system; The back TFCI word of will encoding when original TFCI bit number equals 1 simultaneously is mapped to whole first to the 4th parts in TFCI territory, improves system gain at receiving terminal by merging soft bit information, improves transmission performance, and has realized the compatibility with existing system.
Description of drawings
Fig. 1 is a TD-SCDMA system physical channel signal form schematic diagram.
Fig. 2 is the burst structure schematic diagram of TD-SCDMA system.
Fig. 3 does not have the position view of TFCI information in business time-slot under the situation of TPC and SS.
Fig. 4 has the position view of TFCI information in business time-slot under the situation of TPC and SS.
Fig. 5 is N=8 in the TD-SCDMA system, and the bit of 16,32 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Fig. 6 be in the TD-SCDMA system during N=4 bit of TFCI word at the mapping schematic diagram of each position of TFCI.
Fig. 7 is N=12 in the TD-SCDMA system, and the bit of 24,48 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Fig. 8 be in the TD-SCDMA system during N=6 bit of TFCI word at the mapping schematic diagram of each position of TFCI.
The sending method exemplary plot that Fig. 9 supplies bit when being TFCI of the present invention coding.
The method of reseptance exemplary plot that Figure 10 supplies bit when being TFCI of the present invention coding.
Figure 11 is N=12 in the TD-SCDMA of the present invention system, and the bit of 24,48 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Figure 12 be in the TD-SCDMA of the present invention system during N=6 bit of TFCI word at the mapping schematic diagram of each position of TFCI.
Figure 13 is the sending method exemplary plot that original TFCI bit number of the present invention equals 1 o'clock TFCI word bit.
Figure 14 is the method for reseptance exemplary plot that original TFCI bit number of the present invention equals 1 o'clock TFCI word bit.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Core concept of the present invention is in order to take into account on the compatible basis, be shown the information bit than peculiar certain relation by the table of bits of supplying that will insert before the TFCI of the TD-SCDMA system coding, improve the resource utilization and the spectrum efficiency of system with several original TFCI.The back TFCI word of encoding when original TFCI bit number equals 1 simultaneously no longer only is mapped to the first and the third part in the TFCI territory of continuous two subframes, but be mapped to whole first to the 4th parts in TFCI territory, and pass through to merge soft bit information at receiving terminal and improve system gain, improve transmission performance.
The embodiment of the coding method of TD-SCDMA system transmissions format combination indication
Need to insert before the TFCI of TD-SCDMA system coding and supply bit, prior art only is that all bits of supplying are fixed as 0, but has changed this way in the present embodiment.In the present embodiment, at first several bits in original transformat combination indication (TFCI) bit are carried out a predictive encoding operation.This predictive encoding operation institute at object can be several bits that preceding several bits, several bits of back or the communication protocol of original TFCI bit is scheduled to.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies preceding Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Then these are needed the bit of supplying that inserts before as the TFCI coding through the information bit after predictive encodings operations, be inserted into the relevant position in the original TFCI bit.
The embodiment of the sending method of TD-SCDMA system transmissions format combination indication
On the basis of the coding method of previous embodiment, present embodiment shows the example of relevant transmission method.See also Fig. 9, the concrete steps of the TFCI of the TD-SCDMA system sending method of present embodiment are as follows.
Step S900: obtain original TFCI bit from high level, forward step S901 to.
Step S901: judge whether in original TFCI bit, to insert and supply bit, then forward step S902 if desired to, if do not need then forward step S903 to.
Step S902: according to communication protocol, several bits in the original TFCI bit are carried out a predictive encoding operation, several bits in the original TFCI bit are carried out a predictive encoding operation, to need the bit of supplying that inserts before as the TFCI coding through the information bit after the predictive encoding operation, be inserted into the relevant position in the original TFCI bit, forward step S903 to.
This predictive encoding operation institute at object can be several bits that preceding several bits, several bits of back or the communication protocol of original TFCI bit is scheduled to.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies preceding Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Step S903: send after finishing the TFCI encoding process.
The embodiment of the method for reseptance of TD-SCDMA system transmissions format combination indication
On the basis of the coding method of aforementioned two embodiment and sending method, present embodiment shows the example of corresponding method of reseptance.See also Figure 10, the concrete steps of the TFCI of the TD-SCDMA system method of reseptance of present embodiment are as follows.
Step S1000: finish the TFCI decoding processing, forward step S1001 to.
Step S1001: judged whether to supply bit,, then forwarded step S1002 to,, then forwarded step S1003 to if do not supply bit if supply bit.
Step S1002: will supply bit and take out, and handle, and recover original TFCI bit, and forward step S1003 then to according to the relation of supplying bit and corresponding original TFCI bit in the predictive encoding operation in the process of transmitting.
In fact this step is equivalent to the contrary processing procedure of the predictive encoding operation in the sending method of last embodiment.
Step S1003: carry out subsequent treatment according to the TFCI that obtains.The process of subsequent treatment belongs to those of ordinary skills' processing means commonly used, does not repeat them here.
The embodiment of the method for sending and receiving of TD-SCDMA system transmissions format combination indication
In conjunction with aforementioned two respectively about the embodiment of process of transmitting and receiving course, present embodiment shows the example of method of sending and receiving.Seeing also Fig. 9 and Figure 10, is the detailed description to the method for present embodiment below.
The method of present embodiment is divided into two processes: process of transmitting shown in Figure 9 and receiving course shown in Figure 10.
For process of transmitting, its step is as follows:
Step S900: obtain original TFCI bit from high level, forward step S901 to.
Step S901: judge whether in original TFCI bit, to insert and supply bit, then forward step S902 if desired to, if do not need then forward step S903 to.
Step S902: according to communication protocol, several bits in the original TFCI bit are carried out a predictive encoding operation, several bits in the original TFCI bit are carried out a predictive encoding operation, to need the bit of supplying that inserts before as the TFCI coding through the information bit after the predictive encoding operation, be inserted into the relevant position in the original TFCI bit, forward step S903 to.
This predictive encoding operation institute at object can be several bits that preceding several bits, several bits of back or the communication protocol of original TFCI bit is scheduled to.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies preceding Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Step S903: send after finishing the TFCI encoding process.
For receiving course, its step is as follows:
Step S1000: finish the TFCI decoding processing, forward step S1001 to.
Step S1001: judged whether to supply bit,, then forwarded step S1002 to,, then forwarded step S1003 to if do not supply bit if supply bit.
Step S1002: will supply bit and take out, and handle, and recover original TFCI bit, and forward step S1003 then to according to the relation of supplying bit and corresponding original TFCI bit in the predictive encoding operation in the process of transmitting.
In fact this step is equivalent to the contrary processing procedure of the predictive encoding operation in the sending method of last embodiment.
Step S1003: carry out subsequent treatment according to the TFCI that obtains.The process of subsequent treatment belongs to those of ordinary skills' processing means commonly used, does not repeat them here.
The enforcement of the mapping method in the TD-SCDA system transmissions format combination indication bit cataloged procedure
Example
The application of the method for present embodiment is the original TFCI word that bit number equals 1 in the TFCI of the TD-SCDMA system cataloged procedure.In the prior art, the TFCI word behind the coding just is mapped to the first and the third part in TFCI territory.In the present embodiment, the TFCI word behind the coding is mapped to whole firsts to the four parts in TFCI territory by a mapping ruler.This mapping ruler is by the concrete agreement of communication protocol.
This mapping ruler by the communication protocol agreement is that traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
In the present embodiment, adopt following method to shine upon: the TFCI word that will be mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part.Figure 11 and Figure 12 are respectively the schematic diagrames of present embodiment when adopting QPSK modulation and 8PSK modulation.
The coding of indication can be the encoding operation of indication among the aforesaid embodiment in the present embodiment, that is: will carry out the operation of predictive encoding with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit.The concrete operations of coding are described in detail in the aforementioned embodiment, do not repeat them here.
The embodiment of the sending method of TD-SCDMA system transmissions format combination indication bit directive
Based on the mapping method in the TFCI cataloged procedure of last embodiment, present embodiment shows the transmission processing method that the original TFCI bit number of TD-SCDMA system equals TFCI word bit in 1 o'clock TFCI word mapping process.See also Figure 13, the sending method of present embodiment specifically may further comprise the steps.
Step S1300: finish the TFCI encoding process, forward step S1301 to.
The TFCI encoding process of indication can be the encoding operation of indication among the aforesaid embodiment herein.
Step S1301: judge whether original TFCI bit number is 1, if bit number be 1 then forward step S1302 to, if bit number is not 1 then forwards step S1303 to.
Step S1302: according to agreement, the TFCI word after will encoding according to mapping ruler is mapped to first's to the four parts in TFCI indication territory, forwards step S1303 then to.
Here the mapping ruler of indication is meant traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously by the communication protocol agreement.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
Step S1303: finish the mapping of TFCI word and handle, enter subsequent processes.If this step is by the directly circulation next (being that original TFCI bit number is not 0 the dirty step S1303 place that forwards to of situation) of step S1301 place, TFCI word mapping described herein is handled and is meant traditional mapping processing procedure.
The embodiment of the method for reseptance of TD-SCDMA system transmissions format combination indication bit directive
Based on the sending method of mapping method in the TFCI cataloged procedure of previous embodiment and TFCI directive, present embodiment shows the receiving handling method that the original TFCI bit number of TD-SCDMA system equals TFCI word bit in 1 o'clock TFCI word mapping process.See also Figure 14, the method for reseptance of present embodiment specifically may further comprise the steps.
Step S1400: finish whole first of TFCI territory and go mapping to handle to tetrameric TFCI word.Remove to shine upon the inverse process of handling the mapping processing that is previous embodiment.Forward step S1401 then to.
Step S1401: judge whether original TFCI bit number is 1, if bit number be 1 then forward step S1402 to, if bit number is not 1 then forwards step S1403 to.
Step S1402: according to agreement, merge, carry out the TFCI coding then, forward step S1403 to according to the soft bit information of mapping ruler with corresponding TFCI word in first to the 4th part in TFCI territory.TFCI coding herein can be the cataloged procedure described in the previous embodiment.
The execution mode that merges is: if the mapping ruler in the sending method is that the TFCI word that will be mapped to first also is mapped to second portion, the TFCI word that is mapped to third part also is mapped to the 4th part, then the merging in the receiving course is meant that first and second portion soft bit information with the TFCI territory merge, and third part and the 4th part soft bit information merge.
Step S1403: obtain original TFCI bit, enter subsequent processes.
The reality of the method for sending and receiving of TD-SCDMA system transmissions format combination indication bit directive
Execute example
In conjunction with the process of transmitting and the receiving course of the TFCI word of preceding two embodiment, present embodiment shows the embodiment of method of sending and receiving.Please be the concrete steps of the method for sending and receiving of present embodiment below simultaneously referring to Figure 13 and Figure 14.
The method of sending and receiving of present embodiment comprises process of transmitting and receiving course two parts.Wherein, process of transmitting further comprises:
Step S1300: finish the TFCI encoding process, forward step S1301 to.
The TFCI encoding process of indication can be the encoding operation of indication among the aforesaid embodiment herein.
Step S1301: judge whether original TFCI bit number is 1, if bit number be 1 then forward step S1302 to, if bit number is not 1 then forwards step S1303 to.
Step S1302: according to agreement, the TFCI word after will encoding according to mapping ruler is mapped to first's to the four parts in TFCI indication territory, forwards step S1303 then to.
Here the mapping ruler of indication is meant traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously by the communication protocol agreement.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
In the present embodiment, be to get the TFCI word that will be mapped to first also to be mapped to second portion, the TFCI word that is mapped to third part also is mapped to tetrameric mapping ruler.
Step S1303: finish the mapping of TFCI word and handle, enter subsequent processes.If this step is by the directly circulation next (being that original TFCI bit number is not 0 the dirty step S1303 place that forwards to of situation) of step S1301 place, TFCI word mapping described herein is handled and is meant traditional mapping processing procedure.
Receiving course further comprises:
Step S1400: finish whole first of TFCI territory and go mapping to handle to tetrameric TFCI word.Remove to shine upon the inverse process of handling the mapping processing that is previous embodiment.Forward step S1401 then to.
Step S1401: judge whether original TFCI bit number is 1, if bit number be 1 then forward step S1402 to, if bit number is not 1 then forwards step S1403 to.
Step S1402: according to agreement, merge, carry out the TFCI coding then, forward step S1403 to according to the soft bit information of mapping ruler with corresponding TFCI word in first to the 4th part in TFCI territory.TFCI coding herein can be the cataloged procedure described in the previous embodiment.
The execution mode that merges is: based on the mapping ruler of fixing in the process of transmitting, the merging in the receiving course is meant the first in TFCI territory and second portion soft bit information is merged that third part and the 4th part soft bit information merge.
Step S1403: obtain original TFCI bit, enter subsequent processes.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (24)
1. the coding method of a TD-SCDMA system transmissions format combination indication, it is characterized in that, the transformat combination indication bit that several are original is carried out the operation of predictive encoding, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit.
2. the coding method of TD-SCDMA system transmissions format combination indication according to claim 1, it is characterized in that several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
3. the coding method of TD-SCDMA system transmissions format combination indication according to claim 1 is characterized in that, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
4. the sending method of TD-SCDMA system transmissions format combination indication is characterized in that this sending method comprises:
Obtain original transformat combination indication bit from high level;
Judge whether in original transformat combination indication bit, to insert and supply bit, insert if desired and supply bit, then will carry out a predictive encoding operation with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit, send after then finishing the encoding process of transformat combination indication bit; Do not supply bit if do not need to insert, to send after then directly finishing the encoding process of transformat combination indication bit.
5. the sending method of TD-SCDMA system transmissions format combination indication according to claim 4, it is characterized in that several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
6. the sending method of TD-SCDMA system transmissions format combination indication according to claim 4 is characterized in that, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
7. the method for reseptance of TD-SCDMA system transmissions format combination indication is characterized in that this method of reseptance comprises:
Finish the decoding processing of transformat combination indication bit;
Judged whether to supply bit, if supply bit, then will supply bit takes out, handle with the relation of corresponding original transformat combination indication bit according to supplying bit in the predictive encoding operation, recover original transformat combination indication bit, handle according to the transformat combination indication bit that obtains at last; If do not supply bit, then directly handle according to decoded transformat combination indication bit.
8. the method for reseptance of TD-SCDMA system transmissions format combination indication according to claim 7 is characterized in that, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
9. the method for sending and receiving of TD-SCDMA system transmissions format combination indication is characterized in that method of sending and receiving comprises:
Process of transmitting:
Obtain original transformat combination indication bit from high level;
Judge whether in original transformat combination indication bit, to insert and supply bit, insert if desired and supply bit, then will carry out a predictive encoding operation with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit, send after then finishing the encoding process of transformat combination indication bit; Do not supply bit if do not need to insert, to send after then directly finishing the encoding process of transformat combination indication bit;
Receiving course:
Finish the decoding processing of transformat combination indication bit;
Judged whether to supply bit, if supply bit, then will supply bit takes out, handle with the relation of corresponding original transformat combination indication bit according to supplying bit in the operation of the predictive encoding of process of transmitting, recover original transformat combination indication bit, handle according to the transformat combination indication bit that obtains at last; If do not supply bit, then directly handle according to decoded transformat combination indication bit.
10. the method for sending and receiving of TD-SCDMA system transmissions format combination indication according to claim 9, it is characterized in that several original transformat combination indication bit are several bits of preceding several bits, several bits of back or the communication protocol agreement of original transformat combination indication bit.
11. the method for sending and receiving of TD-SCDMA system transmissions format combination indication according to claim 9 is characterized in that, the predictive encoding operation comprises the combination in any of following mode by the communication protocol agreement:
(1) part is supplied the repeated encoding that bit is several original transformat combination indication bit;
(2) part is supplied the cyclic redundancy check (CRC) code that bit is several original transformat combination indication bit;
(3) part is supplied the parity check code that bit is several original transformat combination indication bit.
12. the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure, it is characterized in that, be transformat combination directive after 1 transformat combination indication bit encoded is mapped to transformat combination indication territory by a mapping ruler first to the 4th part with original bit number.
13. the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 12, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
14. the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 12, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
15. the mapping method in the TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 12 is characterized in that, original bit number is that the cataloged procedure of 1 transformat combination indication bit comprises:
To carry out the operation of predictive encoding with several original transformat combination indication bit, will be before the information bit after the predictive encoding operation be as transformat combination indication coding the bit of supplying of insertion be inserted into relevant position in the original transformat combination indication bit.
16. the sending method of a TD-SCDMA system transmissions format combination directive is characterized in that sending method comprises:
Finish the encoding process of transformat combination indication bit;
Whether the bit number of judging original transformat combination indication equals 1, if bit number equals 1 then transformat combination directive after will encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and finish the transmission of mapping back, if bit number is not equal to 1 then transformat combination directive after will encoding is mapped to the first and the third part in transformat combination indication territory, and send finishing the mapping back.
17. the sending method of TD-SCDMA system transmissions format combination directive according to claim 16, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
18. the sending method of TD-SCDMA system transmissions format combination directive according to claim 16, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
19. the method for reseptance of a TD-SCDMA system transmissions format combination directive is characterized in that method of reseptance comprises:
First go mapping to handle with what finish transformat combination indication territory to tetrameric transformat combination directive;
Whether the bit number of judging original transformat combination indication bit is 1, if bit number is 1, then transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory merge according to mapping ruler, obtain original transformat combination indication bit through decoding then, if bit number is not 1 then directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
20. the method for reseptance of TD-SCDMA system transmissions format combination directive according to claim 19, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
21. the method for reseptance of TD-SCDMA system transmissions format combination directive according to claim 19, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
22. the method for sending and receiving of a TD-SCDMA system transmissions format combination directive is characterized in that this method comprises:
Process of transmitting:
Finish the encoding process of transformat combination indication bit;
Whether the bit number of judging original transformat combination indication equals 1, if bit number equals 1 then transformat combination directive after will encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and finish the transmission of mapping back, if bit number is not equal to 1 then transformat combination directive after will encoding is mapped to the first and the third part in transformat combination indication territory, and send finishing the mapping back;
Receiving course:
First go mapping to handle with what finish transformat combination indication territory to tetrameric transformat combination directive;
Whether the bit number of judging original transformat combination indication bit is 1, if bit number is 1, then transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory merge according to mapping ruler, obtain original transformat combination indication bit through decoding then, if bit number is not 1 then directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
23. the method for sending and receiving of TD-SCDMA system transmissions format combination directive according to claim 22, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
24. the method for sending and receiving of TD-SCDMA system transmissions format combination directive according to claim 22, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
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| CN2009100560341A CN101990292A (en) | 2009-08-07 | 2009-08-07 | Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system |
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| CN2009100560341A CN101990292A (en) | 2009-08-07 | 2009-08-07 | Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system |
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| CN2013100512908A Division CN103152131A (en) | 2009-08-07 | 2009-08-07 | TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system |
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| CN103208290A (en) * | 2012-01-17 | 2013-07-17 | 展讯通信（上海）有限公司 | Coder and decoder and preprocessing method and device for parameter analyzing in code stream |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103208290A (en) * | 2012-01-17 | 2013-07-17 | 展讯通信（上海）有限公司 | Coder and decoder and preprocessing method and device for parameter analyzing in code stream |
| CN103208290B (en) * | 2012-01-17 | 2015-10-07 | 展讯通信（上海）有限公司 | Parameter analysis of electrochemical and preprocess method and device in codec, code stream |
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