CN102780537B - Data processing method and equipment - Google Patents

Abstract

Embodiments provide a kind of data processing method and equipment.For transmitting terminal, described data processing method comprises: obtain pending data, and the channel coding method of pending data; According to channel coding method, and the corresponding relation of the channel coding method set up in advance and modulation system determines the modulation system of pending data; Treat deal with data according to channel coding method and carry out coded treatment, and treat deal with data according to the modulation system determined and carry out modulation treatment; Treat deal with data according to the transmission of fixing character rate and carry out the result after encoding and modulating.By utilizing scheme provided by the present invention, effectively can reduce the complexity of transmitting terminal deal with data, reducing the detection limit of receiving terminal recognition coding process simultaneously, and reduce complexity.

Description

Data processing method and equipment

technical field

The present invention relates to the field of communication technologies, in particular to a data processing method and equipment.

Background technique

In EGPRS2 (Enhanced GPRS phase 2, Enhanced General Packet Radio Service Phase 2), Level-A and Level-B services will be sent at different symbol rates, where Level-A uses NSR (Normal Symbol Rate, common symbols Rate), specifically 270.833kbps, Level-B uses HSR (Higher Symbol Rate, high symbol rate), specifically 325kbps, where HSR is 1.2 times that of NSR.

In EGPRS2, the channel coding method has a corresponding relationship with the modulation method and rate. In the process of data processing, the sending end selects the channel coding method to encode the data to be processed according to the current channel conditions, and selects the modulation method in the corresponding relationship to modulate the encoded data, and then sends it to the receiving end at a corresponding rate. After the receiving end receives the processing results sent by the sending end, as shown in Figure 1, it is discriminated through different modulation modes and rate combinations respectively, and after obtaining the corresponding discrimination results, the discrimination results are analyzed using the preset discrimination rules processing, determining the modulation mode and rate of the processing result, and then performing SB identification and CPS identification to determine the channel coding mode of the processing result.

Ericsson proposed the PCE2 (Precoded EGPRS2) technology at the 3GPP GERAN#45 conference. By introducing the discrete inverse Fourier transform IDFT at the modulation end and the discrete Fourier transform DFT operation at the receiving end, the EGPRS time domain signal is transformed into a frequency domain. However, in PCE2, the corresponding relationship between the different symbol rates in the original EGPRS2 and its coding methods and modulation methods is still used. For the sending end, different sending rates correspond to different numbers of symbols, and processing symbols of different lengths will introduce IDFT modules of different lengths, and other processing processes of different burst structures will increase the complexity of implementation at this time; and for the receiving end, there are many combinations of modulation modes and rates (as shown in Figure 1 There are 6 kinds), which requires more kinds of discrimination at the same time, which also leads to a large and complicated detection process of the identification code.

Contents of the invention

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a data processing method and device to reduce the complexity of data processing at the sending end. The technical solution is as follows:

A data processing method, comprising:

Obtain the data to be processed, and the channel coding method of the data to be processed;

Determine the modulation method of the data to be processed according to the channel coding method and the pre-established correspondence between the channel coding method and the modulation method, and the pre-established correspondence between the channel coding method and the modulation method is used to ensure that the The processing result after encoding and modulation processing of the data to be processed is sent at a fixed symbol rate;

Perform encoding processing on the data to be processed according to the channel coding method, and perform modulation processing on the data to be processed according to a determined modulation method;

Send the processing result after encoding and modulating the data to be processed according to the fixed symbol rate.

A data processing method, comprising:

Receive the processing result sent by the network side according to the fixed symbol rate;

Discriminating the modulation mode of the received processing result through blind modulation mode detection according to the fixed symbol rate;

The processing result is demodulated by using the modulation mode.

A data processing device comprising:

An acquisition module, configured to acquire the data to be processed and the channel coding method of the data to be processed;

A modulation mode determining module, configured to determine the modulation mode of the data to be processed according to the channel coding mode and the pre-established correspondence between the channel coding mode and the modulation mode, and the pre-established correspondence between the channel coding mode and the modulation mode The relationship is used to ensure that the processing result after encoding and modulation processing of the data to be processed is sent at a fixed symbol rate;

An encoding and modulation module, configured to encode the data to be processed according to the channel encoding method, and perform modulation processing on the data to be processed according to the determined modulation method;

A sending module, configured to send a processing result after encoding and modulating the data to be processed according to the fixed symbol rate.

A data processing device comprising:

A receiving module, configured to receive processing results sent by the network side according to a fixed symbol rate;

A modulation mode discrimination module, configured to determine the modulation mode of the received processing result through modulation mode blind detection according to the fixed symbol rate;

A demodulation module, configured to demodulate the processing result by using the modulation mode.

In the embodiment of the present invention, the corresponding relationship between the channel coding mode and the modulation type is established in advance, in order to realize that the corresponding processing result of the data to be transmitted is transmitted at a fixed symbol rate. When encoding and modulating the data to be processed, the sending end determines the channel coding method of the data to be processed according to the channel conditions, and determines the channel coding method corresponding to the channel coding method from the pre-established correspondence between the channel coding method and the modulation method. Modulation mode, and use the determined channel coding mode and modulation mode to encode and modulate the data to be processed, and then send the corresponding processing results according to a fixed symbol rate, thereby effectively reducing the complexity of data processing at the sending end; further, For the receiving end, receiving the processing result with a fixed symbol rate does not need to perform blind detection on the symbol rate of the processing result, which reduces the amount of detection in the identification and encoding process and reduces the complexity.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of the processing of the processing result modulation mode and rate blind detection by the receiving end in the prior art;

FIG. 2 is a flowchart of a data processing method provided by an embodiment of the present invention;

FIG. 3 is a flowchart of another data processing method provided by an embodiment of the present invention;

FIG. 4 is a flowchart of another data processing method provided by an embodiment of the present invention;

FIG. 5 is a flowchart of another data processing method provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a data processing device provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another data processing device provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a data processing system provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the PCE2 technology, the processing of the original time-domain signal is transformed into the frequency domain, so that the improvement of the modulation order greatly reduces the impact on the demodulation complexity and performance, thus bringing greater flexibility to the design of coding and modulation. Currently, there are 16 channel coding methods in the PCE2 technology, and each channel coding method corresponds to a modulation method, and the data processed according to the channel coding method and modulation method correspond to two different symbol rates. For the sender, different symbol rates correspond to different numbers of symbols. Processing the number of symbols of different lengths will introduce inverse discrete Fourier transform IDFT modules of different lengths and the processing process of different burst structures, which will increase the implementation. the complexity. For example, the modulation method corresponding to the channel coding method DBS-5 is QPSK, and the processing result after coding and modulation is sent at a high symbol rate HSR. Among them, the existing burst of PCE2 includes TS (Training Sequence), CP (Cyclic Prefix), GP (Guard Period) and D (Data Symbol). The total number of burst symbols under NSR must satisfy 156.25. As an example, the specific composition of the number of symbols in each part corresponding to the total number of burst symbols under NSR can be: N_NSR=58*2+26+6+8.25=156.25, where the number of TS characters is 26, the number of symbols of CP and GP is 6 and 8.25 respectively, and the number of data symbols is 116. The total number of burst symbols under HSR is 187.5. As an example, the specific composition of the number of symbols in each part corresponding to the total number of burst symbols under HSR can be: N_HSR=69*2+31+8+10.5=187.5, wherein, the number of TS characters is 31, the number of symbols of CP and GP is 8 and 10.5 respectively, and the number of data symbols is 138. It can be understood that the number of symbols and data symbols of TS, CP, and GP in the burst composition can change according to different situations or coding and modulation, but as long as the sum of symbols of all components satisfies the total number of symbols of NSR, then according to NSR is sent; if the sum of symbols of all components satisfies the number of HSR symbols, it is sent according to HSR.

It should be noted that the downlink channel coding of the existing EGPRS2 includes coding of USF (Uplink State Flag), coding of header (Header), coding of service data information (Data), coding of PAN (Piggy-backedAck/Nack) and SB (Stealing Bits, can also be written as SF: Stealing Flag, stealing bits) encoding. The channel coding in the subsequent specification refers to the general term of channel coding including coding of each part. The coding of SB is to distinguish the type of header data in the source information of channel coding through a code word of a certain length, that is, Header Type. Since one Header Type currently only corresponds to one header encoding method, this means that SB is essentially used to distinguish different header encoding methods. If the same Header Type adopts different encoding methods, different SB codewords are also required to distinguish them. For the sake of simplicity, the SB in the subsequent manual can also be written to correspond to different Header Types. CPS (Coding and Puncturing Scheme indicator field) is a component of the header information, which is used to indicate the channel coding and punching method.

For the above-mentioned channel coding method, the decoding process of the existing receiving end is:

Distinguish the modulation mode and rate of data through blind detection of modulation mode and rate, and perform corresponding demodulation;

Judge the encoding method of the Header by the value of SB, and decode the Header;

Determine the channel coding and puncturing mode by decoding the CPS field information in the Header;

Through the determined channel coding mode, corresponding decoding is performed on USF, Data and PAN respectively, so as to obtain all useful information.

It can be seen from the above that, in the PCE2 technology, for the receiving end, the encoding mode identification process includes: modulation mode and rate blind detection. As shown in Figure 1, when there are six combinations of modulation modes and transmission rates (8PSK for NSR; QPSK for HSR; 16QAM for NSR; 16QAM for HSR; 32QAM for NSR; 32QAM for HSR), so when performing modulation mode and rate blind During the detection, the receiving end will discriminate the received processing results of the above six combinations at the same time, determine the modulation mode and rate according to the discrimination results, and perform corresponding demodulation, and then judge the sending end according to the SB identification and CPS identification. In the channel coding mode, the demodulated data is finally decoded to obtain the effective data information sent by the sending end. The identification process of the above-mentioned channel coding method needs to perform blind detection on the symbol rate and the modulation method at the same time. Since the modulation method is not limited to the existing modulation methods (such as the introduction of new 64QAM modulation, etc.), the combination of the symbol rate and the modulation method exists There are many types, which leads to a large and complicated detection process for the receiving end to identify the code.

In the data processing method provided by the embodiment of the present invention, the sending end performs channel coding and modulation on the data to be processed by adopting a channel coding method and a modulation method with a specific corresponding relationship, so as to send the processing result corresponding to the data to be processed at a fixed symbol rate , so as to reduce the complexity of data processing at the sending end; at the same time, for the receiving end, since the received processing result has a fixed symbol rate, there is no need to perform rate blind detection on the processing result when performing code recognition, which is effective The amount of detection in the process of encoding recognition at the receiving end is reduced, and the complexity is reduced.

The embodiment of the present invention does not limit the number of symbols of the above components, and the following embodiments are only examples under specific TS, CP and GP lengths.

Taking the example of unifying the symbol rate of the sending end to the normal symbol rate NSR under a specific TS, CP, and GP length, that is, unifying the number of burst data symbols to 116, the data processing method provided by the embodiment of the present invention is introduced. Since the symbol rate is directly determined by the number of symbols in the burst within a fixed burst time period, the unification of the symbol rate can be simplified as the unification of the number of symbols in the burst. It can be understood that the symbol rate of the sending end can also be unified to the high symbol rate HSR, that is, the number of data symbols per burst is unified to 138.

First, a data processing method provided by an embodiment of the present invention is introduced from the perspective of the sending end. As shown in FIG. 2, the data processing method may include the following steps:

Step S21, the sending end obtains the data to be processed and the channel coding method of the data to be processed;

The sending end in this embodiment may be a base station subsystem BSS, and the base station subsystem BSS includes: a base transceiver station BTS and a base station controller BSC, and the base transceiver station BTS obtains the data to be processed and the channel coding mode from the base station controller BSC, Then channel coding and modulation are performed on the data to be processed. , can also be a base station.

Step S22: Determine the modulation method of the data to be processed according to the channel coding method and the pre-established correspondence between the channel coding method and the modulation method;

Wherein, the pre-established correspondence between the channel coding scheme and the modulation scheme is used to ensure that the processing result after encoding and modulation processing of the data to be processed is sent at a fixed symbol rate. Step S23, performing coding processing on the data to be processed according to a channel coding method, and performing modulation processing on the data to be processed according to a determined modulation method;

Step S24, sending the processing result after coding and modulating the data to be processed according to a fixed symbol rate.

It should be noted that the coded and modulated data can also be processed by inverse discrete Fourier transform IDFT, adding CP, and pulse shaping.

In the embodiment of the present invention, the corresponding relationship between the channel coding mode and the modulation type is established in advance, in order to realize that the corresponding processing result of the data to be transmitted is transmitted at a fixed symbol rate. When encoding and modulating the data to be processed, the sending end determines the channel coding method of the data to be processed according to the channel conditions, and determines the channel coding method corresponding to the channel coding method from the pre-established correspondence between the channel coding method and the modulation method. Modulation mode, and use the determined channel coding mode and modulation mode to encode and modulate the data to be processed, and then send the corresponding processing results according to a fixed symbol rate, thereby effectively reducing the complexity of data processing at the sending end; further, For the receiving end, receiving the processing result with a fixed symbol rate does not need to perform blind detection on the symbol rate of the processing result, which reduces the amount of detection in the identification and encoding process and reduces the complexity.

Further, in the above embodiment, the modulation method corresponding to the channel coding method in the corresponding relationship between the channel coding method and the modulation method established in advance to ensure that the corresponding processing result of the data to be processed is transmitted at a fixed symbol rate is Among the correspondence between channel coding schemes and modulation schemes, there is a modulation scheme with a higher order than the modulation scheme corresponding to the channel coding scheme.

In the existing PCE2 technology, the channel coding method, modulation method, header type, SB bit, etc. have specific correspondences, as shown in Table 1 for example:

Table 1

It should be noted that, in the above Table 1, the symbol rate is the result of normalizing the actual symbol rate by the common symbol rate. The DAS and DBS here represent a specific channel coding process, which includes the coding process of all parts of the Header, Data, USF, SB, and PAN described above. Wherein, D indicates the downlink channel, and A and B indicate level-A and level-B services respectively.

It can be seen from Table 1 that for the modulation mode QPSK, the modulation mode with a higher order than the QPSK modulation mode can be 8PSK; for the modulation mode 8PSK, the modulation mode with a higher modulation order than the modulation mode 8PSK is 16QAM. It can be understood that the modulation method with a higher order than the existing modulation method can be determined according to the actual situation, and is not limited to a specific modulation method, for example: the modulation method with a higher order than the QPSK modulation method can be 8PSK , can also be 16QAM.

The data to be processed is encoded and modulated by using channel coding methods and modulation methods with a higher order than the modulation methods corresponding to the channel coding methods in the correspondence between existing channel coding methods and modulation methods. Compared with using existing Some channel coding methods and modulation methods encode and modulate the processing results, and the number of frequency domain data symbols per burst is reduced, so as to ensure that the processing results after coding and modulation meet the transmission conditions of the fixed symbol rate NSR.

The specific frequency-domain data symbol number correspondence can refer to Table 2:

Table 2

As shown in Table 2, taking the coding method DBS-12 as an example, among the pre-established correspondence between the channel coding method and the modulation method to ensure that the corresponding processing results of the data to be processed are sent at a fixed symbol rate, the channel coding method The modulation method corresponding to DBS-12 is 64QAM. After encoding and modulation using the channel coding method and modulation method in this correspondence, the number of data symbols per burst in the processing result is limited to 116, which shows that the processing result can be used. The symbol rate NSR is transmitted. When the number of data symbols in the processing result is less than 116, for example, the processed result is 111, compared with 116, 5 data symbols are saved, and the number of saved data symbols can be adjusted in the following way: Keep the number of subcarriers No change, the saved 5 data symbols are used to increase the guard sideband, and the number of subcarriers on the guard sideband can be filled with 0, that is, empty subcarriers, which can be called padding filling symbols here, and their length is represented by L. When the sender sends the processing result at a fixed symbol rate NSR, the size of L can be adjusted so that the processing result meets the sending condition of the NSR rate, that is, under a specific TS, CP and GP length, each burst data in the processing result The number of symbols is adjusted to 116.

It can be understood that the corresponding relationship shown in Table 2 is only an example, and does not constitute a limitation to the present invention.

It should be noted that, under a specific TS, CP, and GP length, the number of data symbols per burst in the processing result is adjusted to 116, which satisfies the condition of sending at a fixed symbol rate. Therefore, the character lengths of TS, CP and GP can also be adjusted according to the actual situation, so as to satisfy the condition that the processing result can be sent at a fixed symbol rate.

Since the number of data symbols in each burst is actually determined by the output information of channel coding, it is also possible to use the above-mentioned high-order modulation method for modulation under the condition that the number of TS, CP, and GP characters remains unchanged. Above, by modifying the amount of encoded output information, the number of data symbols per burst is adjusted to 116, which satisfies the condition of sending processing results at the normal symbol rate NSR. Therefore, when establishing the corresponding relationship between the channel coding method and the modulation method, from the perspective of changing the output information amount of the channel coding, a high-redundancy coding method is adopted. The high-redundancy coding method is: the output information amount obtained after encoding the data to be processed The channel coding method is higher than the output information amount after coding according to the channel coding method in the corresponding relationship between the existing channel coding method and the modulation method. The data encoded by the sending end according to the above-mentioned high-redundancy channel coding method is modulated by a high-order modulation method, and the number of data symbols per burst in the processing result is 116, and the processing result can be realized according to a fixed The symbol rate NSR is sent for.

The corresponding relationship between the high-redundancy coding method and the high-order modulation method and the change in the number of data symbols per burst in the processing results after channel coding and modulation can be seen in Table 3:

table 3

As shown in Table 3, it should be noted that, considering channel interleaving, the channel-coded information bits need to be carried by 4 bursts. Since the original channel coding method DBS-5 is sent by HSR, the number of data symbols per burst is 138, and QPSK modulation is used, so the encoded information bits are 138*2*4=1104 bits, of which 2 are QPSK modulation per symbol The number of bits carried. In order to ensure that the processed results can be sent in NSR, the number of data symbols per burst needs to be reduced to 116. Considering the performance of channel coding, a high-order modulation method can be used to carry the coded data. For example, 8PSK is selected as For a high-order modulation mode, the coded data becomes 116*3*4=1392 bits, where 3 is the number of bits carried by each symbol of 8PSK modulation. For the channel coding method DBS-5, the coded data is 1104 bits. In order to increase the number of information bits obtained after coding the data to be processed to 1392, the method of adjusting DBS-5 is adopted here to make it have a higher Through higher redundancy, the number of encoded information bits can be increased to 1392. This adjusted channel coding method with higher redundancy can be called DBS-5a. And so on for other encoding methods.

If the performance meets the requirements, the modulation method corresponding to the new channel coding method can also choose other methods. The number of encoded bits is based on the expected number of data symbols in each burst and the number of bits carried by each symbol in the selected modulation method. calculated. For example, for the original DBS-5 service, if it is desired to send in NSR, and choose 16QAM modulation bearer, then the number of encoded bits is 116*4*4=1856, and the number of bits after encoding the data to be processed needs to be satisfied. A new channel coding method for 1856.

It can be understood that the corresponding relationship shown in Table 3 is only an example, and does not constitute a limitation to the present invention.

Similarly, from the perspective of changing the amount of channel coding output information, the channel coding method in the pre-established correspondence between the channel coding method and the modulation method can be a low-redundancy coding method, and the low-redundancy coding method is: the data to be processed The output information obtained after coding is lower than the coding method of the output information after coding according to the channel coding method in the corresponding relationship between the existing channel coding method and the modulation method, so that according to the corresponding relationship between the existing channel coding method and the modulation method The number of information bits modulated by the modulation mode in is reduced, and then the number of data symbols per burst in the processing result after modulation by this modulation mode is 116. As shown in Table 4:

Table 4

Referring to Table 4, taking the original DBS-5 business as an example, if the expected transmission rate is NSR, and QPSK is still selected to be carried, then the number of encoded bits must be 116*2*4=928 bits, and the data to be processed A new encoding of 928 bits after encoding is called DBS-5b. Compared with the original coded 1104 bits, the redundancy of the new channel coding method is reduced, which can be called low-redundancy coding. With the continuous development and evolution of coding technologies, new coding technologies can meet performance requirements with low redundancy.

It can be understood that the corresponding relationship shown in Table 4 is only an example, and does not constitute a limitation to the present invention.

Further, in the data processing process, the process of encoding the data to be processed according to the channel coding method includes:

Setting the value of the bit-stealing SB in the channel coding of the data to be processed is a preset value assigned in advance to the corresponding header coding method in the channel coding method.

The SB value is used by the receiving end to discriminate the header coding mode for the demodulated data.

It should be noted that the above-mentioned pre-established correspondence between channel coding schemes and modulation schemes to ensure that the corresponding processing results of the data to be processed are transmitted at a fixed symbol rate does not only include the correspondence between channel coding schemes and modulation schemes , and also includes the corresponding relationship between the header coding scheme corresponding to the channel coding scheme and the SB, and the like. As shown in Table 1, the channel coding method corresponds to a unique header type, and one header type corresponds to multiple channel coding methods. When the receiving end performs encoding identification, due to the existence of different symbol rates, the SB value of 8 bits all 0 or 8 bits all 1 can distinguish different types of header types. In this embodiment, for the pre-established correspondence between the channel coding method and the modulation method in order to ensure that the corresponding processing results of the data to be processed are transmitted at a fixed symbol rate, the symbol rate is unified as NSR, so that the receiving end can At the symbol rate, the header type of the processing result can still be distinguished according to the value of SB. In different cases, different header coding methods corresponding to channel coding methods will have different SB preset values. For example: DBS-5 and DBS-6; DAS-5, DAS-6 and DAS-7;

The above two sets of coding methods correspond to the same modulation method and one type of header type, so the existing SB value setting method can still be used to identify the header type by using the original SB value.

For DAS-8, DAS-9, DBS-7, DBS-8, DBS-9; these encoding methods correspond to the same modulation method, but correspond to three header types (header type4, header type7, header type8); here At present, the two SB values of 8-bit all 0 and 8-bit all 1 cannot distinguish three header types in the prior art, so a new SB value needs to be assigned to it to distinguish different types of header types; the SB value can be Three 8-bit binary codes.

For DAS-10, DAS-11, DAS-12, DBS-10, DBS-11, DBS-12, which is similar to DAS-8, DAS-9, DBS-7, DBS-8, DBS-9, The above encoding method corresponds to the same modulation method, but corresponds to four header types (header type10, header type5, header type8, header type9). At this time, according to the above idea, the SB value is four kinds of 8-bit binary codes.

In practical applications, in order to make the set SB value have a certain degree of error tolerance, to ensure that even if the processed data changes due to interference after transmission in the channel, it can still be judged as the closest SB value. , to determine its SB value, so it is necessary to ensure that each code of the SB value under the same modulation mode has an approximately equal and as large Hamming distance as possible.

For example: when setting the SB value for the header type corresponding to DAS-8, DAS-9, DBS-7, DBS-8, and DBS-9, you can refer to the following table 5:

Channel coding method Header type SB bits DAS-8 header type 4 1,1,0,0,1,0,0,0 DAS-9 header type 4 1,1,0,0,1,0,0,0 DBS-7 header type 7 0,0,0,1,0,1,1,0 DBS-8 header type 7 0,0,0,1,0,1,1,0 DBS-9 header type 8 1,1,1,1,1,1,1,1

table 5

As shown in Table 5, the Hamming distance between any two of the three SB values set for the channel coding method to distinguish the header type is 5 or 6, and the SB values of different channel coding are placed in the burst. s position. The correspondence between the SB coding value and the channel coding type is not limited to the examples in Table 5, such as the SB coding of 0, 0, 0, 0, 0, 0, 0, 0 can also correspond to DAS-8 and DAS-9, The SB codes of 0, 0, 0, 1, 1, 1, 1, 1 can correspond to DBS-7 and DBS-8; the SB codes of 1, 1, 1, 0, 0, 0, 1, 1 can be corresponded to DBS-9.

When setting the SB value for the header type corresponding to DAS-10, DAS-11, DAS-12, DBS-10, DBS-11, and DBS-12, you can refer to the following table 6:

Channel coding method Header type SB bits

DAS-10 header type 10 0,0,0,1,0,1,1,0 DAS-11 header type 5 1,1,1,1,1,1,1,1 DAS-12 header type 5 1,1,1,1,1,1,1,1 DBS-10 header type 8 1,1,0,0,1,0,0,0 DBS-11 header type 9 0,0,1,0,0,0,0,1 DBS-12 header type 9 0,0,1,0,0,0,0,1

Table 6

As shown in Table 6, the Hamming distance between any two of the four SB values used to distinguish the header type set for the channel coding method is 5 or 6.

It can be understood that the setting of the SB values is not limited to those shown in Table 5 and Table 6, as long as the Hamming distances between the SB values are approximately equal and as large as possible. Similarly, the correspondence between SB coding values and channel coding types is not limited to the examples in Table 5, for example: SB coding of 0, 0, 0, 0, 0, 0, 0, 0 can correspond to DAS-10; 0 , 0, 0, 1, 1, 1, 1, 1 SB codes can correspond to DAS-11 and DAS-12; 1, 1, 1, 0, 0, 0, 1, 1 SB codes can correspond to DBS The SB code of -10; 1, 1, 1, 1, 1, 1, 0, 0 can correspond to DBS-11 and DBS-12.

When the sending end sends the processing result at a fixed symbol rate, such as NSR, the receiving end does not need to perform blind detection on the rate of the processing result in the process of identifying the encoding mode, which effectively reduces the detection amount and detection complexity . From the perspective of the receiving end, a data processing method provided by the embodiment of the present invention, as shown in FIG. 3 , may include the following steps:

Step S31, receiving the processing result sent by the network side according to a fixed symbol rate;

Step S32, according to the fixed symbol rate, through modulation mode blind detection to determine the modulation mode of the received processing result;

Step S33, demodulate the processing result by using the modulation mode.

Determine the modulation mode of the received processing result through blind detection of the modulation mode, demodulate the processing result according to the modulation mode, and determine the channel coding mode of the processing result according to the modulation mode and demodulated data. . Then the receiving end decodes the demodulated data according to the determined channel coding method, and obtains the effective data information sent by the sending end.

Further, the process of determining the modulation mode of the received processing result through blind detection of the modulation mode based on the fixed symbol rate is specifically shown in FIG. 4 , including:

Step S41, performing processing procedures of different modulation modes on the processing results according to the fixed symbol rate, to obtain different procedure results;

Since the symbol rate of the received processing result is fixed, it is only necessary to perform blind detection on the modulation mode according to the symbol rate. For the processing results sent at a fixed symbol rate, there are four modulation methods determined by the blind detection of the modulation method at the receiving end: 8PSK, 16QAM, 32QAM, and 64QAM; Discrimination of modulation mode, get 4 discrimination results.

Step S42, analyzing and processing the process result by using a preset criterion, and determining the modulation mode of the processing result.

Wherein, the discrimination rule is the prior art, such as the maximum signal-to-noise ratio criterion, and can be determined according to the actual situation, so it will not be introduced here.

Further, the above-mentioned process of determining the channel coding method of the processing result according to the modulation method and the demodulated data is shown in Figure 5, including:

Step S51, according to the pre-established correspondence between the channel coding method and the modulation method, determine the number of header types corresponding to the modulation method;

Step S52, judging whether the modulation mode corresponds to a unique header type, if yes, execute S54; otherwise, execute S53;

Step S53, according to the SB value carried by the demodulated data, determine the header type corresponding to the processing result;

The receiving end determines the header type corresponding to the processing result according to the corresponding relationship between the preset channel coding method and the modulation method, and according to the SB value carried by the processing result, and then performs CPS identification.

It can be understood that due to certain interference in the channel, the SB set in the processing result may be subject to channel interference, resulting in a change in the code value. When making a judgment, the SB value is determined as the closest SB value in the preset relationship, and then determined Display the corresponding header type.

Step S54, judging whether the header type corresponding to the processing result corresponds to a channel coding method, if yes, then perform step S55, if not, then perform step S56;

Step S55, determining that the channel coding method corresponding to the header type is the channel coding method corresponding to the processing result;

Step S56, performing CPS identification on the demodulated data to determine the encoding method of the processing result.

It can be understood that the USF, Data and PAN are respectively decoded according to the determined channel coding mode, so as to obtain all useful data information.

Through the description of the above method embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program codes such as read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk.

Corresponding to the above method embodiment, the embodiment of the present invention also provides a data processing device, the data processing device is used as a sending device, as shown in Figure 6, including:

An acquisition module 61, configured to acquire the data to be processed and the channel coding method of the data to be processed;

A modulation method determination module 62, configured to determine the modulation method of the data to be processed according to the channel coding method and the pre-established correspondence between the channel coding method and the modulation method, the relationship between the pre-established channel coding method and the modulation method The corresponding relationship is used to ensure that the processing result after encoding and modulation processing of the data to be processed is sent at a fixed symbol rate;

Coding and modulation module 63, configured to perform coding processing on the data to be processed according to the channel coding method, and perform modulation processing on the data to be processed according to the determined modulation method;

The sending module 64 is configured to send the processing result after encoding and modulating the data to be processed according to the fixed symbol rate.

Wherein, the coding modulation module 63 includes:

The SB value setting unit is configured to set the SB value in the channel coding of the data to be processed to a preset value assigned in advance to the header type header type corresponding to the channel coding method.

Wherein, when the coding modulation module 63 assigns a preset value to the headertype corresponding to the coding method through the SB value setting unit, in the pre-established correspondence between the channel coding method and the modulation method, one modulation method corresponds to multiple For the header type, assign a different SB value to each header type.

Furthermore, in order to make the set SB value have a certain degree of fault tolerance, the SB value setting module assigns each header type a preset Hamming distance between different SB values.

For example: when the corresponding relationship between the channel coding method and the modulation method established in advance, when one modulation method corresponds to three header types, the SB value setting module

Set the SB value as: 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1 , 1, 1.

When the corresponding relationship between the channel coding mode and the modulation mode established in advance, when one modulation mode corresponds to four header types, the SB value setting unit sets the SB values as: 0, 0, 0, 1, 0, 1,1,0,1,1,1,1,1,1,1,1,1,1,0,0,1,0,0,0,0,0,1,0,0,0, 0, 1.

The data processing device in this embodiment may be a base station subsystem BSS or a base station.

For the specific working process of each module in the data processing device disclosed in this embodiment, please refer to the above method embodiment corresponding to the sending end, which will not be repeated here.

Correspondingly, the embodiment of the present invention also provides a data processing device, the data processing device is used as a receiving device, as shown in FIG. 7 , including:

The receiving module 71 is configured to receive the processing result sent by the network side according to a fixed symbol rate;

A modulation mode discrimination module 72, configured to determine the modulation mode of the received processing result through modulation mode blind detection according to the fixed symbol rate;

The demodulation module 73 is configured to use the modulation mode to demodulate the processing result.

Wherein, the modulation mode discrimination module 72 includes:

The processing unit 721 is configured to process the processing results according to the fixed symbol rate, and respectively perform processing processes of different modulation modes to obtain different process results;

The modulation mode determining unit 722 is configured to analyze and process the process result by using a preset criterion, and determine the modulation mode of the processing result.

The data processing device disclosed in this embodiment is further configured to determine the channel coding method of the processing result according to the modulation method and the demodulated data, and then the receiving end decodes the demodulated data according to the determined channel coding method , to get the valid data information sent by the sender.

Corresponding to the previous embodiment, the data processing device in this embodiment is a terminal.

For the specific working process of each module in the data processing device disclosed in this embodiment, please refer to the above-mentioned embodiment of the method corresponding to the receiving end, which will not be repeated here.

The embodiment of the present invention also provides a data processing system, the structure of which is shown in Figure 8, including: a network side 81 and a terminal 82, wherein:

The network side 81 is used to obtain the data to be processed and the channel coding method of the data to be processed, and determine the modulation method of the data to be processed according to the channel coding method and the pre-established correspondence between the channel coding method and the modulation method , the pre-established correspondence between the channel coding method and the modulation method is used to ensure that the processing result after coding and modulating the data to be processed is sent at a fixed symbol rate, and the performing encoding processing on the data to be processed, and performing modulation processing on the data to be processed according to a determined modulation mode, and sending a processing result after encoding and modulating the data to be processed according to the fixed symbol rate;

The terminal 82 is configured to receive the processing result sent by the network side according to a fixed symbol rate, and determine the modulation method of the received processing result through modulation method blind detection according to the fixed symbol rate.

The network side in this embodiment may be a base station subsystem BSS or a base station.

As for the device or system embodiment, since it basically corresponds to the method embodiment, for related parts, please refer to the part of the description of the method embodiment. The device or system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, It can be located in one place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways without exceeding the spirit and scope of the present application. The present embodiment is only an exemplary example and should not be taken as a limitation, and the specific content given should not limit the purpose of the present application. For example, the division of the units or subunits is only a division of logical functions. In actual implementation, there may be other division methods, such as combining multiple units or multiple subunits. Also, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented.

In addition, the described systems, devices and methods and schematic diagrams of different embodiments may be combined or integrated with other systems, modules, techniques or methods within the scope of the present application. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The foregoing is only a specific embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a data processing method, is characterized in that, comprising:

Obtain pending data, and the channel coding method of described pending data;

According to described channel coding method, and the corresponding relation of the channel coding method set up in advance and modulation system determines the modulation system of described pending data, the corresponding relation of the described channel coding method set up in advance and modulation system is for ensureing to encode to the carrying out of described pending data and result after modulation treatment sends according to fixing character rate;

According to described channel coding method, coded treatment is carried out to described pending data, and according to the modulation system determined, modulation treatment is carried out to described pending data;

The result after described pending data being encoded and modulating is sent according to described fixing character rate;

Wherein, in the corresponding relation of the described channel coding method set up in advance and modulation system, the modulation system corresponding to channel coding method is the modulation system higher with the modulation system exponent number corresponding to channel coding method in the corresponding relation of modulation system than existing channel coded system.

2. method according to claim 1, is characterized in that, describedly comprises the process that described pending data carry out coded treatment according to described channel coding method:

The value of stealing bit SB set in described pending data channel coding is be the preset value that header encoder mode corresponding in described channel coding method is distributed in advance.

3. method according to claim 1, is characterized in that,

Channel coding method in the corresponding relation of the described channel coding method set up in advance and modulation system is highly redundant coded system; Described highly redundant coded system is: after treating deal with data coding the output information amount that obtains encode higher than the channel coding method in the corresponding relation according to existing channel coded system and modulation system after the channel coding method of output information amount.

4. method according to claim 1 and 2, is characterized in that,

Channel coding method in the corresponding relation of the described channel coding method set up in advance and modulation system is low redundancy encoding mode, and described low redundancy encoding mode is: the output information amount obtained after treating deal with data coding encode lower than the channel coding method in the corresponding relation according to existing channel coded system and modulation system after the channel coding method of output information amount.

5. method according to claim 2, it is characterized in that, in the corresponding relation of the described channel coding method set up in advance and modulation system, a during modulation system correspondence three kinds of header encoder modes, the described preset value distributed for header encoder mode corresponding in described channel coding method in advance comprises:

1,1,0,0,1,0,0,0、0,0,0,1,0,1,1,0、1,1,1,1,1,1,1,1。

6. method according to claim 2, it is characterized in that, in the corresponding relation of the described channel coding method set up in advance and modulation system, a during modulation system correspondence four kinds of header encoder modes, the described preset value distributed for header encoder mode corresponding in described channel coding method in advance comprises:

0,0,0,1,0,1,1,0、1,1,1,1,1,1,1,1、1,1,0,0,1,0,0,0、0,0,1,0,0,0,0,1。

7. a data processing method, is characterized in that, comprising:

Receive the result that network side sends according to fixing character rate;

According to described fixing character rate, the modulation system of the result received described in being determined by modulation system blind Detecting;

Described modulation system is utilized to carry out demodulation to described result;

Wherein, described according to described fixing character rate, the process of the modulation system of the result received described in being determined by modulation system blind Detecting is comprised:

By described result according to described fixing character rate, carry out the handling process of different modulating mode respectively, obtain different result of flow;

Utilize the criterion preset, analyzing and processing is carried out to described result of flow, determines the modulation system of described result.

8. a data processing equipment, is characterized in that, comprising:

Acquisition module, for obtaining pending data, and the channel coding method of described pending data;

Modulation system determination module, for according to described channel coding method, and the corresponding relation of the channel coding method set up in advance and modulation system determines the modulation system of described pending data, the corresponding relation of the described channel coding method set up in advance and modulation system is for ensureing to encode to the carrying out of described pending data and result after modulation treatment sends according to fixing character rate; Wherein, in the corresponding relation of the described channel coding method set up in advance and modulation system, the modulation system corresponding to channel coding method is the modulation system higher with the modulation system exponent number corresponding to channel coding method in the corresponding relation of modulation system than existing channel coded system;

Code modulation module, for carrying out coded treatment according to described channel coding method to described pending data, and carries out modulation treatment according to the modulation system determined to described pending data;

Sending module, for sending the result after encoding to described pending data and modulating according to described fixing character rate.

9. equipment according to claim 8, is characterized in that, described code modulation module comprises:

SB value setup unit, steals bit SB value as being the preset value that header encoder mode that described channel coding method is corresponding is distributed in advance for setting in described pending data channel coding.

10. a data processing equipment, is characterized in that, comprising:

Receiver module, for receiving the result that network side sends according to fixing character rate;

Modulation system discrimination module, for according to described fixing character rate, the modulation system of the result received described in being determined by modulation system blind Detecting; Wherein, described according to described fixing character rate, the process of the modulation system of the result received described in being determined by modulation system blind Detecting is comprised: by described result according to described fixing character rate, carry out the handling process of different modulating mode respectively, obtain different result of flow; Utilize the criterion preset, analyzing and processing is carried out to described result of flow, determines the modulation system of described result;

Demodulation module, carries out demodulation for utilizing described modulation system to described result.