CN105763295B - A kind of data processing method and device - Google Patents
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Abstract
The embodiment of the invention provides a kind of data processing method and devices, carry out the processing of running time-frequency resource demapping to channel data, obtain the correspondence serial number of resource group and each resource group；The resource group is to be under the jurisdiction of the resource group of different channels group in channel data；Descrambling and de-spreading processing is carried out to the resource group of acquisition according to the correspondence serial number of each resource group, obtains descrambling and de-spreading treated resource group；Channel data decoding process is carried out as unit of the descrambling and de-spreading treated resource group, obtains new channel data.
Description
Technical Field
The present invention relates to channel transmission technologies in the field of communications, and in particular, to a data processing method and apparatus.
Background
A Physical Broadcast Channel (PBCH) is defined in the Long Term Evolution (LTE) specification, and is used for broadcasting basic physical layer configuration information of a cell, such as a system bandwidth, a frame number, a physical hybrid retransmission indicator channel (PHICH) duration, and parameters for determining the total number of PHICH groups carried by the entire downlink bandwidth. The LTE-A system is an evolution of the LTE system, a carrier aggregation function is newly added, a plurality of component carriers can be aggregated to achieve transmission with higher bandwidth, the carrier of the LTE system supports the maximum 20MHz bandwidth, and the LTE-A system supports up to 5 component carriers with 20 MHz. In the LTE-a system, each downlink component carrier may have a Physical Downlink Control Channel (PDCCH) for carrying downlink resource allocation of the component carrier and uplink resource grant of the corresponding uplink component carrier, and this situation is called independent carrier scheduling. Furthermore, LTE-a carrier aggregation also supports cross-carrier scheduling, i.e. the PDCCH on one component carrier can schedule resource allocation and data transmission on another component carrier.
In the related art, a conventional data processing method based on a PHICH channel includes the following steps: firstly, acquiring index information of PHICH data in a first random access memory, and acquiring a storage address of the PHICH data in a second random access memory according to the index information; secondly, performing 3 times of repeated processing, BPSK demodulation, 4 times of spread spectrum processing and summation processing on the PHICH data to obtain 12 IQ data; and finally, writing the 12 IQ data into the units corresponding to the addresses 0 to 11 in the second random access memory at one time.
However, the above data processing method for the PHICH channel employs a random access memory, and requires operations of a read random access memory and a write random access memory for data, thereby greatly reducing the data processing rate, and also has problems of high energy consumption, poor flexibility of use, and the like.
Disclosure of Invention
In view of this, embodiments of the present invention provide a data processing method and apparatus, which can achieve the purposes of fast processing rate, low resource overhead, low energy consumption, and good flexibility in use.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a data processing method, which comprises the following steps:
performing time-frequency resource demapping processing on the channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data;
descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
In the above scheme, performing time-frequency resource demapping processing on channel data to obtain resource groups and corresponding sequence numbers of the resource groups includes:
grouping channel data for one time in a time-frequency resource demapping mode to obtain channel data sets belonging to different carriers and mapping positions of all the channels;
when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping;
and obtaining the corresponding sequence number of each resource group according to the mapping position of each channel.
In the foregoing solution, the descrambling and despreading the obtained resource groups according to the corresponding sequence numbers of the resource groups to obtain the resource groups after descrambling and despreading, includes:
acquiring a spread spectrum orthogonal sequence according to the intra-group serial number in the corresponding serial numbers of each resource group;
generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence;
and carrying out descrambling and despreading treatment on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading code word sequence to obtain the descrambled and despread resource group.
In the foregoing solution, the performing channel data decoding processing on the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data includes:
and accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a first spreading factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
In the foregoing solution, before performing descrambling and despreading processing on the obtained resource group, the method further includes:
screening channel data from the resource elements of the obtained resource groups according to the parity of the group numbers in the corresponding serial numbers of the resource groups;
correspondingly, descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups; and decoding the channel data by taking the resource group subjected to descrambling and despreading as a unit to obtain new channel data, wherein the method comprises the following steps:
descrambling and despreading the screened channel data according to the corresponding serial number of each resource group to obtain a resource group subjected to descrambling and despreading;
and accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a second spread spectrum factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
The embodiment of the invention also provides a data processing device, which comprises a de-mapping processing module, a descrambling and de-spreading processing module and a decoding processing module; wherein,
the de-mapping processing module is used for performing time-frequency resource de-mapping processing on the channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data;
the descrambling and despreading processing module is used for descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
and the decoding processing module is used for decoding the channel data by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
In the above solution, the demapping processing module includes a grouping unit and a determining unit; wherein,
the grouping unit is used for grouping the channel data for one time in a time-frequency resource demapping mode to obtain channel data sets belonging to different carriers and mapping positions of all the channels; when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping;
and the determining unit is used for obtaining the corresponding sequence number of each resource group according to the mapping position of each channel.
In the above scheme, the descrambling and despreading processing module comprises an acquisition unit, a generation unit and a processing unit; wherein,
the acquisition unit is used for acquiring the spread spectrum orthogonal sequence according to the intra-group serial number in the corresponding serial numbers of each resource group;
the generating unit is used for generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence;
and the processing unit is used for carrying out descrambling and despreading processing on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading codeword sequence to obtain the descrambled and despread resource group.
In the above scheme, the decoding processing module is configured to accumulate the modulation symbols included in the descrambling and despreading processed resource group by using a first spreading factor and combining with an in-phase/quadrature binary phase shift keying modulation multiplexing mode to obtain new channel data.
In the above scheme, the device further comprises a screening module; wherein,
the screening module is used for screening channel data from the resource elements of the obtained resource groups according to the parity of the group numbers in the corresponding serial numbers of the resource groups before the descrambling and despreading processing module descrambles and despreads the obtained resource groups;
correspondingly, the descrambling and despreading processing module is used for descrambling and despreading the screened channel data according to the corresponding serial number of each resource group to obtain the resource group subjected to descrambling and despreading processing;
and the decoding processing module is used for accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a second spread spectrum factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
The data processing method and the data processing device provided by the embodiment of the invention perform time-frequency resource demapping processing on channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data; descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups; and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data. Therefore, parallel operation of three links of time-frequency resource demapping processing, descrambling and despreading processing and decoding processing of channel data can be achieved in the data processing process, meanwhile, a random register is not adopted in the whole data processing process, and related operation of a Random Access Memory (RAM) for reading and writing the channel data is effectively avoided, so that the aims of high processing speed, low resource cost, low energy consumption and good use flexibility are achieved.
Drawings
FIG. 1 is a flow chart of a data processing method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a time-frequency resource demapping process performed on channel data according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating descrambling and despreading processes performed on obtained resource groups according to corresponding sequence numbers of the resource groups according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating a data processing method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the labeling of resource groups included in a PHICH data set according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating the composition of a set of resource groups according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a data processing apparatus according to an embodiment of the present invention;
FIG. 8 is a block diagram of a demapping module of a data processing apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a descrambling and despreading module in a data processing apparatus according to an embodiment of the present invention;
fig. 10 is a schematic diagram illustrating a structure of a decoding processing module in the data processing apparatus according to the embodiment of the present invention.
Detailed Description
In the embodiment of the invention, time-frequency resource demapping processing is carried out on channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data; descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups; and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
Fig. 1 is a schematic flow chart of a data processing method according to an embodiment of the present invention, and as shown in fig. 1, the data processing method according to the embodiment of the present invention includes:
step S101: performing time-frequency resource demapping processing on the channel data to obtain resource groups and corresponding serial numbers of the resource groups;
the resource group is a resource group belonging to different channel groups in the channel data.
In an embodiment, as shown in fig. 2, the performing time-frequency resource demapping processing on channel data to obtain resource groups and corresponding serial numbers of the resource groups in the embodiment of the present invention includes:
steps S1011 to S1012: grouping channel data for one time in a time-frequency resource demapping mode to obtain channel data sets belonging to different carriers and mapping positions of all the channels; when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping; wherein the formed resource groups are independent from each other among the channels.
It should be added that, when it is determined that only one group of channels exists in the channel data set, the channel data set may be directly used as a resource group without performing a secondary grouping operation.
Here, taking PHICHs as an example, the mapping position of each PHICH is the number of the first Physical Resource Block (PRB) of the corresponding Physical Uplink Shared Channel (PUSCH) dataCyclic offset n of demodulation reference signal (DMRS)DMRSAnd spreading factor of PHICH modulationAre jointly decided.
Specifically, the PHICH data is subjected to primary grouping and secondary grouping in a time-frequency resource demapping mode to form the phase of a resource groupThe correlation is calculated as follows, wherein the mapping position of each PHICH can be expressed as an index number of each PHICH
Wherein, PHICH groupMapping in an Orthogonal Frequency Division Multiplexing (OFDM) time-frequency domain space to obtain distributed time-domain positions of resource groups (REGs):
extended PHICH duration, frequency domain location of MBSFN subframe:
extended PHICH duration, radio frame structure 2 frequency domain location of subframe 1 and subframe 6:
wherein m' is a PHICH group ID;is l'iThe total number of REGs remaining in the OFDM symbols except for the PCFICH;is an identifier assigned by the base station to each cell.
Step S1013: and obtaining the corresponding sequence number of each resource group according to the mapping position of each channel.
Specifically, taking PHICH as an example, according to the mapping position of each PHICH, i.e. the index number of each PHICHObtaining the group number in the corresponding serial number of each resource groupAnd the serial number in the group
Here, it should be noted that, through step S101 in the embodiment of the present invention, a plurality of resource groups and corresponding serial numbers of each resource group can be obtained; meanwhile, because the resource groups are mutually independent among the channels, the subsequent process S102 can be directly entered when one resource group and the corresponding serial number thereof are obtained, thereby realizing the parallel operation of time-frequency resource de-mapping processing and descrambling and de-spreading processing in the data processing process.
Step S102: descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
in an embodiment, as shown in fig. 3, the descrambling and despreading the obtained resource groups according to the corresponding sequence numbers of the resource groups to obtain the resource groups after descrambling and despreading, according to the embodiment of the present invention, includes:
step S1021: acquiring a spread spectrum orthogonal sequence according to the intra-group serial number in the corresponding serial numbers of each resource group;
specifically, the intra-group sequence number is determined from the corresponding sequence numbers of the resource groups obtained in step S101Obtaining the spread orthogonal sequence shown in the following table 1 according to a specified mapping relationship, wherein in a specific descrambling and despreading process, +1 represents a binary number 00, -1 represents a binary number 11, + j represents a binary number 01, -j represents a binary number 10:
TABLE 1
Step S1022: generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence;
specifically, according to a predefined descrambling codeword sequence and an obtained spreading orthogonal sequence, a descrambling and despreading codeword sequence is generated in a binary digit-by-digit OR operation mode.
Taking PHICH as an example, the predefined descrambling scrambling sequence c (n) is:
c(n)＝(x1(n+NC)+x2(n+NC))mod2
x1(n+31)＝(x1(n+3)+x1(n))mod2
x2(n+31)＝(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2；
wherein N isC＝1600；x1(0)＝1,x1(n)＝0,n＝1,2,...,30；nsIs a time slot number (0-19) in an LTE system;is an identifier assigned by the base station to each cell.
Step S1023: and carrying out descrambling and despreading treatment on Resource Elements (RE) in the obtained resource group in sequence according to the generated descrambling and despreading code word sequence to obtain the descrambled and despread resource group.
Here, it should be noted that, through step S102 in the embodiment of the present invention, descrambling and despreading processing may be performed on each resource group obtained in step S101 to obtain a corresponding resource group after descrambling and despreading processing; meanwhile, when each corresponding descrambling and despreading resource group is obtained, the subsequent process S103 can be directly entered, so that parallel operations of descrambling and despreading and decoding are realized in the data processing process.
Step S103: and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
Specifically, under the condition of a Normal cyclic prefix (Normal CP), the modulation symbols included in the resource group after descrambling and despreading processing are accumulated by using a first spreading factor in combination with an in-phase/quadrature binary phase shift keying modulation multiplexing mode to obtain new channel data, wherein the value of the first spreading factor may be 4; in addition, it should be noted that, taking PHICH as an example, one resource group includes 12 modulation symbols.
In the case of Extended CP, it is necessary to first perform descrambling and despreading processing on the obtained resource groups according to the group numbers in the corresponding sequence numbers of the resource groupsScreening channel data from the resource elements of the obtained resource group; secondly, descrambling and despreading the screened channel data according to the corresponding serial numbers of the resource groups to obtain descrambled and despread resource groups; and finally, accumulating the included modulation symbols by using a second spreading factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data, wherein the value of the second spreading factor can be 2.
Here, whenIf so, the modulation symbols are even groups, and the first two corresponding to 4 resource elements in each resource group are used as the group data, and the total number is 6; when in useThen, it is an odd array, and the last two of the 4 resource elements corresponding to each resource group are used as the data of this group, and there are 6 modulation symbols.
Therefore, parallel operation of three links of time-frequency resource demapping processing, descrambling and despreading processing and decoding processing of channel data can be achieved in the data processing process, meanwhile, a random register is not adopted in the whole data processing process, and related operation of a Random Access Memory (RAM) for reading and writing the channel data is effectively avoided, so that the aims of high processing speed, low resource cost, low energy consumption and good use flexibility are achieved.
Example two
Fig. 4 is a schematic flow chart of a data processing method according to an application example of the present invention, and as shown in fig. 4, the data processing method according to the embodiment of the present invention includes:
step S201: and grouping the PHICH data once by means of time-frequency resource de-mapping to obtain PHICH data sets belonging to different carriers p and mapping positions of the PHICHs.
The PHICH data set borne by each carrier p consists of a plurality of PHICH resource groups (REGs); and aiming at each carrier p, corresponding to a resource group REG position mark contained in a PHICH data set. The first few OFDM symbols indicated by the PCFICH channel carry the total amount ofThe PHICH of a group, Ng ∈ {1/6,1/2,1,2}, which is carried by a Physical Broadcast Channel (PBCH),is the downlink transmission bandwidth, i.e.:
step S202: when determining that a plurality of groups of channels exist in the PHICH data set, forming a resource group through secondary grouping; wherein the formed resource groups are independent from each other among the channels.
Specifically, according to the transmission method of PHICH resource group from frequency domain to time domain, the index number of PHICH isAnd frequency domain time domain positionFinding out the PHICH data set carried by the carrier p, as shown in fig. 5, sequentially marking whether a certain resource group REG belongs to the carrier p, wherein 1 indicates that the resource group REG belongs to the carrier, and 0 indicates that the resource group REG does not belong to the carrier.
Step S203: obtaining corresponding sequence numbers of each resource group according to the mapping position of each PHICH;
as shown in fig. 6, each resource group (REG) set q carried by each carrier p corresponds to a group number/intra-group sequence number, the highest bit G represents a group number of a certain resource group in the resource group set q (at most two groups, 0 represents a first group, and 1 represents a second group), the remaining lower two bits represent an intra-group sequence number of a certain resource group (REG) in the resource group set q, specifically, one resource group set represents at most 3 REGs, binary number 00 represents a first REG in the group, binary number 01 represents a second REG in the group, and binary number 10 represents a third REG in the group.
Step S204: descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
specifically, according to the group number/intra-group sequence number corresponding to the resource group (REG) set q described in step S203 (as shown in fig. 6), the intra-group sequence number of each resource group is acquired in each different resource group set q, and the corresponding spread spectrum orthogonal sequence is selected from the intra-group sequence number; generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence; and finally, carrying out descrambling and despreading treatment on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading code word sequence to obtain the descrambled and despread resource group.
Step S205: and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new PHICH data.
Thus, taking PHICH as an example, in the data processing process, the parallel operations of three links of time-frequency resource demapping processing, descrambling and despreading processing and decoding processing of channel data can be realized, and meanwhile, a random register is not adopted in the whole data processing process, so that the related operations of reading a random access memory and writing the random access memory aiming at the channel data are effectively avoided, and the purposes of high processing rate, low resource overhead, low energy consumption and good use flexibility are achieved.
EXAMPLE III
Fig. 7 is a schematic diagram of a composition structure of a data processing apparatus according to an embodiment of the present invention, and as shown in fig. 7, the data processing apparatus according to the embodiment of the present invention includes a demapping processing module 701, a descrambling and despreading processing module 702, and a decoding processing module 703; wherein,
the demapping processing module 701 is configured to perform time-frequency resource demapping processing on the channel data to obtain resource groups and corresponding sequence numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data;
the descrambling and despreading processing module 702 is configured to perform descrambling and despreading processing on the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
the decoding processing module 703 is configured to perform channel data decoding processing by using the resource group after descrambling and despreading processing as a unit, so as to obtain new channel data.
Specifically, in an embodiment, the decoding processing module is configured to accumulate modulation symbols included in the descrambling and despreading resource group by using a first spreading factor and combining with an in-phase/quadrature binary phase shift keying modulation multiplexing mode to obtain new channel data.
In an embodiment, as shown in fig. 8, the demapping processing module 701 includes a grouping unit 7011 and a determining unit 7012; wherein,
the grouping unit 7011 is configured to perform primary grouping on the channel data in a time-frequency resource demapping manner, so as to obtain channel data sets belonging to different carriers and mapping positions of the channels; when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping; wherein the formed resource groups are independent from each other among the channels.
The determining unit 7012 is configured to obtain the corresponding sequence number of each resource group according to the mapping position of each channel.
In an embodiment, as shown in fig. 9, the descrambling and despreading processing module 702 includes an obtaining unit 7021, a generating unit 7022, and a processing unit 7023; wherein,
the acquiring unit 7021 is configured to acquire a spread spectrum orthogonal sequence according to an intra-group sequence number in the corresponding sequence numbers of each resource group;
the generating unit 7022 is configured to generate a descrambling and despreading codeword sequence according to a predefined descrambling codeword sequence and the obtained spread orthogonal sequence;
the processing unit 7023 is configured to perform descrambling and despreading processing on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading codeword sequence, so as to obtain a descrambled and despread resource group.
In one embodiment, as shown in fig. 10, the apparatus further comprises a screening module 704; wherein,
the screening module 704 is configured to screen channel data from resource elements of the obtained resource groups according to parity of a group number in a corresponding sequence number of each resource group before the descrambling and despreading processing module 702 performs descrambling and despreading processing on the obtained resource groups;
correspondingly, the descrambling and despreading processing module 702 is configured to perform descrambling and despreading processing on the screened channel data according to the corresponding serial number of each resource group, so as to obtain a resource group after descrambling and despreading processing;
the decoding processing module 703 is configured to accumulate the modulation symbols included in the resource group after the descrambling and despreading processing by using a second spreading factor in combination with an in-phase/quadrature binary phase shift keying modulation multiplexing mode to obtain new channel data.
Each module in the data processing apparatus provided in the embodiments of the present invention and the unit included in each module may be implemented by a processor in the data processing apparatus or a device to which the data processing apparatus belongs, or may be implemented by a specific logic circuit; for example, in practical applications, the data processing apparatus may be implemented by a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A method of data processing, the method comprising:
performing time-frequency resource demapping processing on the channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data;
descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
and performing channel data decoding processing by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
2. The method of claim 1, wherein performing time-frequency resource demapping on channel data to obtain resource groups and corresponding sequence numbers of the resource groups comprises:
grouping channel data for one time in a time-frequency resource demapping mode to obtain channel data sets belonging to different carriers and mapping positions of all the channels;
when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping;
and obtaining the corresponding sequence number of each resource group according to the mapping position of each channel.
3. The method of claim 1, wherein performing descrambling and despreading processing on the obtained resource groups according to the corresponding sequence numbers of the resource groups to obtain the resource groups after descrambling and despreading processing comprises:
acquiring a spread spectrum orthogonal sequence according to the intra-group serial number in the corresponding serial numbers of each resource group;
generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence;
and carrying out descrambling and despreading treatment on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading code word sequence to obtain the descrambled and despread resource group.
4. The method according to claim 1, wherein the performing channel data decoding processing in units of the resource groups after descrambling and despreading processing to obtain new channel data comprises:
and accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a first spreading factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
5. The method of claim 1, wherein prior to performing descrambling and despreading processing on the obtained resource group, the method further comprises:
screening channel data from the resource elements of the obtained resource groups according to the parity of the group numbers in the corresponding serial numbers of the resource groups;
correspondingly, descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups; and decoding the channel data by taking the resource group subjected to descrambling and despreading as a unit to obtain new channel data, wherein the method comprises the following steps:
descrambling and despreading the screened channel data according to the corresponding serial number of each resource group to obtain a resource group subjected to descrambling and despreading;
and accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a second spread spectrum factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
6. A data processing device is characterized by comprising a de-mapping processing module, a descrambling and de-spreading processing module and a decoding processing module; wherein,
the de-mapping processing module is used for performing time-frequency resource de-mapping processing on the channel data to obtain resource groups and corresponding serial numbers of the resource groups; the resource group is a resource group belonging to different channel groups in the channel data;
the descrambling and despreading processing module is used for descrambling and despreading the obtained resource groups according to the corresponding serial numbers of the resource groups to obtain the descrambled and despread resource groups;
and the decoding processing module is used for decoding the channel data by taking the resource group subjected to descrambling and despreading processing as a unit to obtain new channel data.
7. The apparatus of claim 6, wherein the demapping processing module comprises a grouping unit and a determining unit; wherein,
the grouping unit is used for grouping the channel data for one time in a time-frequency resource demapping mode to obtain channel data sets belonging to different carriers and mapping positions of all the channels; when determining that a plurality of groups of channels exist in the channel data set, forming a resource group through secondary grouping;
and the determining unit is used for obtaining the corresponding sequence number of each resource group according to the mapping position of each channel.
8. The apparatus of claim 6, wherein the descrambling and despreading processing module comprises an obtaining unit, a generating unit, and a processing unit; wherein,
the acquisition unit is used for acquiring the spread spectrum orthogonal sequence according to the intra-group serial number in the corresponding serial numbers of each resource group;
the generating unit is used for generating a descrambling and despreading code word sequence according to a predefined descrambling code word sequence and the obtained spread spectrum orthogonal sequence;
and the processing unit is used for carrying out descrambling and despreading processing on the resource elements in the obtained resource group in sequence according to the generated descrambling and despreading codeword sequence to obtain the descrambled and despread resource group.
9. The apparatus of claim 6, wherein the decoding processing module is configured to accumulate the modulation symbols included in the resource group after the descrambling and despreading processing by using a first spreading factor in combination with an in-phase/quadrature binary phase shift keying modulation multiplexing manner to obtain new channel data.
10. The apparatus of claim 6, further comprising a screening module; wherein,
the screening module is used for screening channel data from the resource elements of the obtained resource groups according to the parity of the group numbers in the corresponding serial numbers of the resource groups before the descrambling and despreading processing module descrambles and despreads the obtained resource groups;
correspondingly, the descrambling and despreading processing module is used for descrambling and despreading the screened channel data according to the corresponding serial number of each resource group to obtain the resource group subjected to descrambling and despreading processing;
and the decoding processing module is used for accumulating the modulation symbols in the descrambling and despreading processed resource group by utilizing a second spread spectrum factor and combining an in-phase/orthogonal two-path binary phase shift keying modulation multiplexing mode to obtain new channel data.
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