CN105915485B - A kind of data processing method and device applied to wireless receiver - Google Patents
A kind of data processing method and device applied to wireless receiver Download PDFInfo
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- CN105915485B CN105915485B CN201610212979.8A CN201610212979A CN105915485B CN 105915485 B CN105915485 B CN 105915485B CN 201610212979 A CN201610212979 A CN 201610212979A CN 105915485 B CN105915485 B CN 105915485B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
Abstract
The embodiment of the invention provides a kind of data processing methods and device applied to wireless receiver.Wherein, when receiving the subframe in wireless data frame, the subframe numbers of received subframe are obtained；Call thread corresponding with subframe numbers, pass through corresponding thread process subframe, thread successively handles the first time slot, the second time slot and the decoding slot added for subframe of subframe, when handling decoding slot, the pilot frequency information of first OFDM symbol of next subframe corresponding to thread subframe demodulates the data not being demodulated on the second time slot；Wherein, thread is uniquely corresponding with subframe numbers, the difference of unit duration corresponding to whole duration and subframe of the duration no more than wireless data frame of decoding slot；After data are demodulated out in subframe, the data demodulated are descrambled and decoded, obtains corresponding original bit stream.By this programme, the handling capacity of wireless receiver can be improved.
Description
Technical field
The present invention relates to communication technique field, more particularly to a kind of data processing method applied to wireless receiver and
Device.
Background technique
Wireless receiver is responsible for the reception of rf data, then the data by recovering transmitter transmission after demodulating and decoding.
Traditional wireless receiver is realized the reception of rf data, filtering, demodulating and decoding etc. by hardware circuit.The development of wireless receiver
Trend is the various functions of wireless receiver to be realized by software programming, from base with a general hardware platform to rely on
It is freed in hardware, the receiver design method towards purposes.Wherein, GPP (General Purpose Processor,
General processor), such as CPU (Central Processing Unit, central processing unit), it is general to belong to more common one kind
Hardware platform, specifically, based on GPP the combination general-purpose operating system (such as Windows, Linux) realization wireless receiving equipment
Have and facilitate perfect exploitation environment and powerful reconfigurable ability, but the processing capacity of GPP is limited, is difficult to meet modern width
Real-time and throughput demands with communication system.
In addition, FDD (Frequency Division Duplexing, frequency division duplex) is used in mobile communication system
One kind of full-duplex communication technology, FDD are transmitted and are passed up downwards respectively the skill of information using two independent channels
Art.For agreement regulation for FDD system, each wireless data frame length is 10ms, and each wireless data frame includes 10 subframes, often
A subframe lengths are 1ms；Each subframe includes two time slots again, and each slot length is 0.5ms, Transmission Time Interval 1ms,
As shown in Figure 1.Specifically, in FDD system, as shown in Fig. 2, each subframe contains 14 OFDM symbols, wherein 0,4,7,11
Contain pilot frequency information in number OFDM symbol, wireless receiver does channel estimation using these pilot frequency informations.By taking Fig. 2 as an example, nothing
After line receiver receives the pilot frequency information in No. 0 OFDM symbol of 4 work song frames, according in No. 11 OFDM symbols of 3 work song frames
Pilot frequency information and the pilot frequency informations of No. 0 OFDM symbol of 4 work song frames channel estimation is done by interpolation, 3 work songs are calculated
The channel matrix H of No. 0 OFDM symbol of 12, No. 13 OFDM symbols and 4 work song frames of frame.Similarly, 4 work song frames are being received
4, after the pilot frequency information in 7, No. 11 OFDM symbols, 1~No. 4,5~No. 7,8~No. 11 OFDM of 4 work song frames can be calculated respectively
The channel matrix of symbol, and after receiving the pilot frequency information of No. 0 OFDM symbol of 5 work song frames, 4 work song frames can be calculated
12, the channel matrix of No. 13 OFDM symbols.So far, all channel informations have all obtained on 4 work song frames, are then believed using channel
Breath demodulates the entire subframe of subframe 4, is descrambled, being decoded.It can be seen from the above content that the data on 4 work song frames are in 5 work songs
No. 0 OFDM symbol of frame receives post-processing, that is to say, that the data of any one subframe are accorded in No. 0 OFDM of next subframe
Number receive post-processing.
Wherein, the digital signal processing function that the wireless receiver based on GPP can realize high-performance hardware passes through soft
The method of part programming realized with GPP, by GPP and USRP (Universal Software Radio Peripheral, it is general
Software radio peripheral hardware) connection, realize wireless receiver function.This method flexibility for realizing receiver is good, can basis
The demand of oneself configures relevant parameter；Also there is very strong scalability, can be used to verify new technical solution；Meanwhile equipment at
This reduces a lot relative to traditional hardware acceptance chance.But in the prior art, as shown in figure 3, wireless receiver presses single line
Journey mode handles data, specifically, wireless receiver serial received each subframe in chronological order, receives same when current subframe
When the upper subframe of processing data, each sub-frame data must handle completion in 1ms, otherwise cause wireless receiver can not be just
Often operation, which greatly limits the scenes of system application.
As it can be seen that how the wireless receiver that the FDD system based on GPP is constituted, promote radio machine handling capacity, be one urgently
Problem to be solved.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of data processing method and device applied to wireless receiver, with
The processing speed of wireless receiver is improved, and then improves the handling capacity of wireless receiver.Specific technical solution is as follows:
In a first aspect, the embodiment of the invention provides a kind of data processing methods applied to wireless receiver, comprising:
When receiving the subframe in wireless data frame, the subframe numbers of received subframe are obtained；
Thread corresponding with the subframe numbers is called, to locate by subframe described in the corresponding thread process
During reason, the first time slot of the subframe, the second time slot and the decoding slot added for the subframe are handled successively to solve
The data in corresponding time slot are adjusted to utilize first of next subframe corresponding to the subframe when handling the decoding slot
The pilot frequency information of a OFDM symbol demodulates the data not being demodulated on second time slot；Wherein, thread and subframe numbers have only
One correspondence, second time slot after first time slot and before the decoding slot, the decoding slot when
The difference for the unit duration corresponding to the whole duration and each subframe of wireless data frame of failing to grow up；
After the data in the subframe are demodulated out, the data demodulated are descrambled and are decoded, obtain pair
The original bit stream answered.
Optionally, described to call thread corresponding with the subframe numbers, to pass through the corresponding thread process institute
State subframe, comprising:
Data in the subframe are written in the correlated variables of thread corresponding with the subframe numbers, start with it is described
The corresponding thread of subframe numbers.
Optionally, the process of the first time slot described in the corresponding thread process includes:
The content of physical downlink control channel PDCCH is demodulated, to obtain Downlink Control Information DCI；According to obtained DCI
Information demodulates the data of user UE on physical down Traffic Channel PDSCH in first time slot；
Optionally, the process of the second time slot described in the corresponding thread process includes:
According to the DCI information demodulated on first time slot, UE on the PDSCH is demodulated in second time slot
Data.
Optionally, a kind of data processing method applied to wireless receiver provided in an embodiment of the present invention, further includes:
When the thread successively handles the first time slot of the subframe, the second time slot and the decoding added for the subframe
Before gap is to demodulate the data in corresponding time slot, decoding slot also is added for the subframe.
Optionally, a length of 10ms when the entirety of the wireless data frame, when unit corresponding to each subframe a length of 1ms；
Correspondingly, the duration of the decoding slot is not more than 9ms.
Second aspect, the embodiment of the invention also provides a kind of data processing equipments applied to wireless receiver, comprising:
Frame number obtains module, for when receiving the subframe in wireless data frame, obtaining received subframe
Subframe numbers；
Data burst processing module, for calling thread corresponding with the subframe numbers, by described corresponding
Subframe described in thread process, during processing, the thread successively handle the first time slot of the subframe, the second time slot and
The decoding slot added for the subframe is to demodulate the data in corresponding time slot, when handling the decoding slot, the thread
Using the pilot frequency information of first OFDM symbol of next subframe corresponding to the subframe, demodulate on second time slot not
The data being demodulated；Wherein, thread and subframe numbers have unique correspondence, second time slot after first time slot and
Before the decoding slot, the duration of the decoding slot is right no more than the whole duration of wireless data frame and each subframe institute
The difference for the unit duration answered；
Data recovery module, for being solved to the data demodulated after the data in the subframe are demodulated out
It disturbs and decodes, obtain corresponding original bit stream.
Optionally, the data burst processing module, is specifically used for:
Data in the subframe are written in the correlated variables of thread corresponding with the subframe numbers, start with it is described
The corresponding thread of subframe numbers.
Optionally, the process of the first time slot described in the corresponding thread process includes:
The content of physical downlink control channel PDCCH is demodulated, to obtain Downlink Control Information DCI；According to obtained DCI
Information demodulates the data of user UE on physical down Traffic Channel PDSCH in first time slot；
Optionally, the process of the second time slot described in the corresponding thread process includes:
According to the DCI information demodulated on first time slot, UE on the PDSCH is demodulated in second time slot
Data.
Optionally, the thread successively handles the first time slot of the subframe, the second time slot and adds for the subframe
Decoding slot to demodulate the data in corresponding time slot before, also add decoding slot for the subframe.
Optionally, a length of 10ms when the entirety of the wireless data frame, when unit corresponding to each subframe a length of 1ms；
Correspondingly, the duration of the decoding slot is not more than 9ms.
In scheme provided in an embodiment of the present invention, additionally increase a time slot when handling each subframe, by multi-thread
Journey handles corresponding subframe respectively, realizes the parallel processing of each subframe, therefore, can be improved the handling capacity of wireless receiver,
Increase the bandwidth of wireless receiver, and then improve the utilization rate of wireless receiver, saves message processing time.Further,
A kind of data processing method and device applied to wireless receiver provided by the embodiment of the present invention is based on software realization, reduces
The cost of wireless receiver exploitation, improves the compatibility of wireless receiver.It is emphasized that implementing any of the invention
Product or method must be not necessarily required to reach all the above advantage simultaneously.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the frame structure diagram of the wireless data frame of FDD；
Fig. 2 is the frame structure diagram of the subframe in the wireless data frame of FDD；
Fig. 3 is that wireless receiver utilizes the schematic illustration of the method for single thread processing data in the prior art；
Fig. 4 is the system model schematic diagram of FDD system applied by the embodiment of the present invention；
Fig. 5 is a kind of flow chart of the data processing method applied to wireless receiver provided by the embodiment of the present invention；
Fig. 6 is utilizes the execution step schematic diagram of the wireless receiver of institute of embodiment of the present invention providing method；
Fig. 7 is the processing schematic of wireless data frame in the embodiment of the present invention；
Fig. 8 is a kind of structural representation of the data processing equipment applied to wireless receiver provided by the embodiment of the present invention
Figure；
Fig. 9 is the planisphere of the signal under 20MHz bandwidth using QPSK modulation；
Figure 10 is the planisphere of the signal under 20MHz bandwidth using 16-QAM modulation；
Figure 11 is the planisphere of the signal under 20MHz bandwidth using 64-QAM modulation；
Figure 12 is the throughput comparison diagram that receiver uses Different treatments.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention is designed to provide a kind of data processing method and device applied to wireless receiver, with
The processing speed of receiver is improved, and then improves the handling capacity of wireless receiver.
It is provided for the embodiments of the invention a kind of data processing method progress applied to wireless receiver first below
It introduces.
It is emphasized that the communication system that method provided by the embodiment of the present invention is based on is FDD system, wherein
It include: wireless transmitter and wireless receiver in the FDD system.Specifically, including: the first GPP in wireless transmitter
(General Purpose Processor, general processor) and the first USRP (Universal Software Radio
Peripheral, general software radio peripheral hardware), the first GPP runs eNB (evolved Node B, evolved base station)
Program, wherein the first GPP, which is used to generate according to agreement, sends data, and the first USRP is written in data to be sent,
First USRP is connected to the first GPP, the first USRP complete Digital Up Convert (DUC), digital-to-analogue conversion (DAC) with
And radiofrequency signal is sent.Specifically, include: the second general processor GPP and the second common software in the wireless receiver without
Line electricity peripheral hardware USRP, the 2nd GPP run UE (User Experience, user experience) program, wherein described second
USRP is connected to the 2nd GPP, and the 2nd USRP completes rf signal reception, Digital Down Convert (DDC) and modulus and turns
It changes (ADC), the 2nd GPP reads data by the 2nd USRP, then parses to data.Institute of the embodiment of the present invention
The communication system that the method for offer is based on is that the system model of FDD system is referred to shown in Fig. 4.
Explanation is needed further exist for, the executing subject of this method is the 2nd GPP in wireless receiver.In addition, this hair
" second " in " first " and " the 2nd GPP " in " the first GPP " mentioned in bright embodiment is used only for from the upper area of name
Divide the GPP in wireless transmitter and wireless receiver, and does not have any limiting meaning；Similar, in " the first USRP " " the
One " is used only for " second " in " the 2nd USRP " from the USRP distinguished in wireless transmitter and wireless receiver in name,
And do not have any limiting meaning.
It is understood that wireless data frame handles institute to the radiofrequency signal that wireless transmitter is sent for above-mentioned 2nd USRP
Digital baseband signal data, radiofrequency signal as above-mentioned wireless transmitter the first USRP to caused by above-mentioned first GPP
Obtained by original bit stream process.
It, can be with as shown in figure 5, a kind of data processing method applied to wireless receiver provided by the embodiment of the present invention
Include the following steps:
S101: when receiving the subframe in wireless data frame, the subframe numbers of received subframe are obtained；
Wherein, the frame synchronization that subframe numbers first have to accomplish receiver and transmitter is obtained.The basic principle of Frame Synchronization Test
Be using local sequence to receive signal and synchronize related, and then obtain desired peak value, synchronous letter judged according to peak value
Number position.The detection of Domain Synchronous applied by the embodiment of the present invention is divided into two steps: first step is the main synchronous letter of detection
Number, after detecting primary synchronization signal, according to the fixed relationship between primary synchronization signal and secondary synchronization signal, carry out second step
Rapid detection, i.e. detection secondary synchronization signal.After completion synchronizes, the subframe numbers of data are got.For example, each data wireless data frame
Including 10 subframes, respectively marked as the 0th work song frame~the 9th work song frame.
It is emphasized that the subframe that the embodiment of the present invention is previously mentioned is any subframe in wireless data frame, that is,
It says, although introducing method provided by the embodiment of the present invention in the embodiment of the present invention with the treatment process to a subframe,
It is that, when receiving any subframe in wireless data frame, can execute data processing side provided by the embodiment of the present invention
Method, to demodulate original bit stream corresponding to the subframe.
S102 calls thread corresponding with the subframe numbers, to locate by subframe described in corresponding thread process
During reason, the thread successively handles the first time slot, the second time slot and the decoding added for the subframe of the subframe
Time slot is to demodulate the data in corresponding time slot, and when handling the decoding slot, the thread is using corresponding to the subframe
The pilot frequency information of first OFDM symbol of next subframe demodulates the data not being demodulated on second time slot；
Wherein, thread and subframe numbers have unique correspondence, and second time slot is after first time slot and in institute
Before stating decoding slot, corresponding to whole duration and each subframe of the duration no more than wireless data frame of the decoding slot
The difference of unit duration.It is emphasized that the first time slot is existing No. 0 time slot, when the second time slot is existing No. 1
Gap.It will be appreciated by persons skilled in the art that thread described in the present embodiment utilizes next height corresponding to the subframe
The pilot frequency information of first OFDM symbol of frame, demodulate the specific implementations of the data not being demodulated on second time slot with
For single thread using the pilot frequency information of first OFDM symbol of next subframe corresponding to a subframe, demodulation should in the prior art
The specific implementation for the data not being demodulated on second time slot of subframe is identical, and this will not be repeated here.
It is emphasized that wherein each thread corresponds to a subframe there are multiple above-mentioned threads.For example, it deposits
In 10 threads, marked as No. 0 thread~No. 9 thread respectively corresponds the 0th work song frame~the 9th work song frame, above-mentioned 10 lines
Corresponding 10 subframes of journey parallel processing, as shown in Figure 6, wherein after the USRP in wireless receiver receives data, obtain son
Frame number enters corresponding thread process data, and each thread handles son according to the sequence of No. 0 time slot, No. 1 time slot, decoding slot
Frame exits processing after each thread process finishes corresponding subframe.Due to each subframe lengths be 1ms, it can be deduced that be
It is 10ms by the wireless data frame length that 10 subframes form, then to subframe parallel processing, as long as each thread
Guarantee the complete current subframe of pre-treatment of the data arrival of same subframe number in next wireless data frame, wireless receiver can be just
Often work, therefore, each thread are 10ms to the maximum process limited of corresponding subframe.
During processing, above-mentioned thread successively handles the first time slot of subframe, the second time slot and adds for subframe
Decoding slot, to demodulate the data in corresponding time slot.
Specifically, the process of the first time slot includes: to demodulate the content of PDCCH in subframe described in corresponding thread process,
To obtain DCI information；According to obtained information, the data of user UE on above-mentioned first time slot PDSCH are demodulated；
The process of the second time slot includes: in subframe described in corresponding thread process
According to the DCI information demodulated on above-mentioned first time slot, the number of UE on PDSCH in above-mentioned second time slot is demodulated
According to.
When the decoding slot in the subframe described in the corresponding thread process, what which was stored using decoding slot
The pilot frequency information of first OFDM symbol of next subframe corresponding to current subframe is demodulated and is not solved on second time slot
The data of tune.For example, wireless receiver receives the pilot frequency information in first OFDM symbol of 4 work song frames, i.e., No. 0
Pilot frequency information in OFDM symbol, according to the pilot frequency information and 4 work song frames in No. 11 OFDM symbols on 3 the second time slots of work song frame
The pilot frequency information of No. 0 OFDM symbol channel estimation is done by interpolation, 12,13 of the second time slot on 3 work song frames are calculated
Channel matrix corresponding to number OFDM symbol and No. 0 OFDM symbol of 4 work song frames.The rest may be inferred, when wireless receiver receives
Pilot frequency information onto first OFDM symbol of 9 work song frames, i.e. pilot frequency information in No. 0 OFDM symbol, according to 8 work song frames
The pilot frequency information of No. 0 OFDM symbol of the pilot frequency information and 9 work song frames in No. 11 OFDM symbols on two time slots by interpolation come
Channel estimation is done, 12, No. 13 OFDM symbols of the second time slot on 8 work song frames and No. 0 OFDM symbol of 9 work song frames is calculated
Channel matrix；In addition, it is necessary to, it is emphasized that and the 12nd, No. 13 OFDM symbol of 9 work song frames of current wireless data frame, then
Channel estimation is done according to first pilot frequency information of 0 work song frame of next data frame.
It requires emphasis, thread and subframe numbers have unique correspondence, and the function of thread is identical, i.e., each thread is pressed
According to the sequence of the first time slot, the second time slot, decoding slot, subframe of setting each other off is handled simultaneously respectively.It should be understood that as schemed
Shown in 7, the second time slot after the first slot, before decoding slot.
Further, corresponding to whole duration and each subframe of the duration of decoding slot no more than wireless data frame
The difference of unit duration, i.e. decoding slot are no more than the reservation process time in Fig. 7.For example, the length of each wireless data frame
For 10ms, the length of each subframe is 1ms, then the length of decoding slot is not more than 9ms.
It is emphasized that when the first time slot in the embodiment of the present invention in any corresponding subframe of thread process and second
The process of gap handles the first time slot (i.e. No. 0 time slot) and the second time slot (i.e. 1 in each subframe with single thread in the prior art
Number time slot) process it is similar.
S103 is descrambled and is decoded to the data demodulated, obtained after the data in the subframe are demodulated out
Corresponding original bit stream.
Specifically, demodulating process of the thread to the data on time slot are as follows: transported using the channel matrix estimated
It calculates to complete；After the data in the subframe are demodulated out, the data demodulated are descrambled and decoded, institute is obtained
Corresponding original bit stream.
It will be appreciated by persons skilled in the art that after the data in the subframe are demodulated out, it can be using existing
There is any specific implementation of technology to be descrambled to the data demodulated and be decoded to obtain corresponding original ratio
Spy's stream, it is not limited here.
It is understood that a kind of data processing method applied to wireless receiver provided by the embodiment of the present invention,
Additionally increase a time slot when handling each subframe, to handle corresponding subframe respectively by multithreading, realizes each subframe
Parallel processing therefore can be improved the handling capacity of wireless receiver, increase the bandwidth of wireless receiver, and then improve wireless
The utilization rate of receiver saves message processing time.Further, one kind provided by the embodiment of the present invention is applied to wireless
The data processing method of receiver and it is installed on software realization, reduces the cost of wireless receiver exploitation, improve and wirelessly connect
The compatibility of receipts machine.
Corresponding to above method embodiment, as shown in figure 8, the embodiment of the invention also provides one kind to be applied to wireless receiving
The data processing equipment of machine, the apparatus may include:
Frame number obtains module 810, for when receiving the subframe in wireless data frame, obtaining received son
The subframe numbers of frame；
Data burst processing module 820, for calling thread corresponding with the subframe numbers, by described corresponding
Thread process described in subframe, during processing, the thread successively handle the first time slot of the subframe, the second time slot with
And be decoding slot that the subframe is added to demodulate the data in corresponding time slot, when handling the decoding slot, the line
The pilot frequency information of first OFDM symbol of next subframe corresponding to subframe described in Cheng Liyong demodulates on second time slot
The data not being demodulated；
The data burst processing module, is specifically used for:
Data in the subframe are written in the correlated variables of thread corresponding with the subframe numbers, start with it is described
The corresponding thread of subframe numbers.
Wherein, thread and subframe numbers have unique correspondence, and second time slot is after first time slot and in institute
Before stating decoding slot, corresponding to whole duration and each subframe of the duration no more than wireless data frame of the decoding slot
The difference of unit duration；
Specifically, the process of the first time slot described in the corresponding thread process includes:
The content of physical downlink control channel PDCCH is demodulated, to obtain downlink control channel information DCI；According to acquired
DCI information, demodulate the data of user UE on physical down Traffic Channel PDSCH in first time slot；
Specifically, the process of the second time slot described in the corresponding thread process includes:
According to the DCI information demodulated on first time slot, UE on the PDSCH is demodulated in second time slot
Data.
Specifically, the thread successively handles the first time slot of the subframe, the second time slot and adds for the subframe
Decoding slot to demodulate the data in corresponding time slot before, also add decoding slot for the subframe.
Specifically, a length of 10ms when the entirety of the wireless data frame, when unit corresponding to each subframe a length of 1ms；
Correspondingly, the duration of the decoding slot is not more than 9ms.
Data recovery module 830, for being carried out to the data demodulated after the data in the subframe are demodulated out
Descrambling and decoding, obtain corresponding original bit stream.
It is understood that a kind of data processing equipment applied to wireless receiver provided by the embodiment of the present invention,
Data burst processing module additionally increases a time slot when handling each subframe, to handle corresponding son respectively by multithreading
Frame realizes the parallel processing of each subframe, therefore, can be improved the handling capacity of wireless receiver, increases the band of wireless receiver
Width, and then the utilization rate of wireless receiver is improved, save message processing time.Further, the embodiment of the present invention is provided
A kind of data processing method applied to wireless receiver and be installed on software realization, reduce wireless receiver exploitation at
This, improves the compatibility of wireless receiver.
It is described below and is handled using the wireless receiver and traditional wireless receiver of the provided scheme of the embodiment of the present invention
The performance comparison of data:
There is very strong flexibility and scalability, later period using the wireless receiver of the provided scheme of the embodiment of the present invention
It can be on the basis of the wireless receiver by increasing software module, it is easy to increase new function.With communication system
Development, new technology can continuously emerge, and the wireless receiver is potential to provide possibility for research, verifying new technology.The present invention is implemented
The method that multiple threads are opened according to frame structure and Transmission Time Interval that example proposes, so that wireless receiver is capable of handling
The time of signal increases, and improves the rate that can handle signal, improves system bandwidth.Meanwhile the wireless receiver can be located
The increase of reason signal time is added in such a system after being also and more multi-functional provides possibility.
In order to prove that the wireless receiver using the provided scheme of the embodiment of the present invention can be improved system bandwidth and can expand
The strong feature of malleability, has carried out following test by taking FDD system as an example:
Test scene: test carries out under scene as shown in Figure 4, wherein wireless transmitter is by the first GPP and first
USRP is constituted, and wireless receiver is made of the 2nd GPP and the 2nd USRP, wherein the 2nd GPP in wireless receiver executes this hair
Data processing method provided by bright embodiment.Specific system configuration is as shown in Table 1.
Table 1
Test method: the first GPP is made to distinguish transmission bandwidth 5MHz, 10MHz, 20MHz, modulation system QPSK
(Quadrature Phase Shift Keyin, quadrature phase shift keying), 16QAM (Quadrature Amplitude
Modulation, quadrature amplitude modulation, 16OAM are the quadrature amplitude modulation of 16 kinds of symbols), the LTE signal of 64QAM, (1) is surveyed
Measure the time used in wireless receiver processing signal；(2) wireless receiver treated signal is stored in file, makes planisphere；(3)
Count the throughput of wireless receiver in all cases and the Comparative result with single thread processing.
Test result: as shown in Table 2.
Table 2
When system bandwidth is promoted and uses high-order modulating, the time needed for wireless receiver processing data can increase
Add.When handle signal used in the time be more than 1ms when, traditional receiver can not work normally, and application institute of the embodiment of the present invention
The wireless receiver of offer scheme using three time slot of multiple threads and every thread process by the way of make wireless receiver pair
It is promoted in the processing time that every subframe allows.Wherein, Fig. 9 is that QPSK modulation system is used under 20MHz bandwidth, and signal is by balanced
Planisphere after device, Figure 10 are that 16-QAM modulation system is used under 20MHz bandwidth, planisphere of the signal after balanced device, figure
11 be that 64-QAM modulation system, planisphere of the signal after balanced device are used under 20MHz bandwidth.
Even if thus the available system bandwidth of planisphere is 20MHz, using 64QAM modulation system, it is applied to the present invention
The wireless receiver of the provided scheme of embodiment can still work normally, the time used in the data of wireless receiver processing at this time
For 2.688ms, this with proposition method of the present invention processing time upper limit 10ms compared to also very big reserved space, after being conducive to
Function is added in this system, there is good scalability.
Also, the wireless receiver that as seen from Figure 12, existing single thread processing is realized is in bandwidth 10MHz MCS
(Modulation and Coding Scheme, modulation and coding strategy) index value is greater than 20, bandwidth 20MHz MCS index value
Just since time-out can not work normally after greater than 10.Using the wireless receiver of multithread processing method proposed by the present invention
Throughput identical with existing receiver can be reached in data volume hour, when existing receiver can not work normally, still
Good performance can be shown, the throughput of receiver is improved.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of data processing method applied to wireless receiver characterized by comprising
When receiving the subframe in wireless data frame, the subframe numbers of received subframe are obtained；
Corresponding with subframe numbers thread is called, with by subframe described in thread process corresponding with the subframe numbers,
During processing, the first time slot, the second time slot and the subframe that the thread successively handles the subframe are added
Decoding slot is to demodulate the data in corresponding time slot, and when handling the decoding slot, the thread is right using the subframe
The pilot frequency information of first OFDM symbol of the next subframe answered demodulates the data not being demodulated on second time slot；Its
In, thread and subframe numbers have unique correspondence, and second time slot is after first time slot and in the decoding slot
Before, the duration of the decoding slot no more than wireless data frame whole duration and each subframe corresponding to unit duration it
Difference；
After the data in the subframe are demodulated out, the data demodulated are descrambled and decoded, is obtained corresponding
Original bit stream.
2. the method according to claim 1, wherein described call corresponding with subframe numbers thread, with
Pass through subframe described in the corresponding thread process, comprising:
Data in the subframe are written in the correlated variables of thread corresponding with the subframe numbers, starting and the subframe
Number corresponding thread.
3. the method according to claim 1, wherein described in the thread process corresponding with the subframe numbers
The process of first time slot includes:
The content of physical downlink control channel PDCCH is demodulated, to obtain Downlink Control Information DCI；Believed according to obtained DCI
Breath demodulates the data of user UE on physical down Traffic Channel PDSCH in first time slot；
The process of second time slot described in the thread process corresponding with the subframe numbers includes:
According to the DCI information demodulated on first time slot, the number of UE on the PDSCH in second time slot is demodulated
According to.
4. the method according to claim 1, wherein the thread successively handle the subframe the first time slot,
It is also that the subframe increases before second time slot and the decoding slot added for the subframe are to demodulate the data in corresponding time slot
If decoding slot.
5. method according to claim 1-4, which is characterized in that a length of when the entirety of the wireless data frame
10ms, when unit corresponding to each subframe a length of 1ms；
Correspondingly, the duration of the decoding slot is not more than 9ms.
6. a kind of data processing equipment applied to wireless receiver characterized by comprising
Frame number obtains module, for when receiving the subframe in wireless data frame, obtaining the son of received subframe
Frame number；
Data burst processing module, for calling thread corresponding with the subframe numbers, by opposite with the subframe numbers
Subframe described in the thread process answered, during processing, the thread successively handle the first time slot of the subframe, the second time slot
And be decoding slot that the subframe is added to demodulate the data in corresponding time slot, it is described when handling the decoding slot
Thread demodulates second time slot using the pilot frequency information of first OFDM symbol of next subframe corresponding to the subframe
On the data that are not demodulated；Wherein, thread and subframe numbers have unique correspondence, second time slot first time slot it
Afterwards and before the decoding slot, the duration of the decoding slot is not more than the whole duration and each subframe of wireless data frame
The difference of corresponding unit duration；
Data recovery module, for after the data in the subframe are demodulated out, to the data demodulated carry out descrambling with
Decoding obtains corresponding original bit stream.
7. device according to claim 6, which is characterized in that the data burst processing module is specifically used for:
Data in the subframe are written in the correlated variables of thread corresponding with the subframe numbers, starting and the subframe
Number corresponding thread.
8. device according to claim 6, which is characterized in that described in the thread process corresponding with the subframe numbers
The process of first time slot includes:
The content of physical downlink control channel PDCCH is demodulated, to obtain Downlink Control Information DCI；Believed according to obtained DCI
Breath demodulates the data of user UE on physical down Traffic Channel PDSCH in first time slot；
The process of second time slot described in the corresponding thread process includes:
According to the DCI information demodulated on first time slot, the number of UE on the PDSCH in second time slot is demodulated
According to.
9. device according to claim 6, which is characterized in that the thread successively handle the subframe the first time slot,
It is also that the subframe increases before second time slot and the decoding slot added for the subframe are to demodulate the data in corresponding time slot
If decoding slot.
10. according to the described in any item devices of claim 6-9, which is characterized in that a length of when the entirety of the wireless data frame
10ms, when unit corresponding to each subframe a length of 1ms；
Correspondingly, the duration of the decoding slot is not more than 9ms.
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| CN102624466A (en) * | 2011-01-26 | 2012-08-01 | 高通股份有限公司 | Method and apparatus for conducting reference signal measurement in the TDD-LTE system from TD-SCDMA system |
| CN105009627A (en) * | 2013-03-13 | 2015-10-28 | 高通股份有限公司 | Reducing frequency of measurement of stationary UE |
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| CN102624466A (en) * | 2011-01-26 | 2012-08-01 | 高通股份有限公司 | Method and apparatus for conducting reference signal measurement in the TDD-LTE system from TD-SCDMA system |
| CN105009627A (en) * | 2013-03-13 | 2015-10-28 | 高通股份有限公司 | Reducing frequency of measurement of stationary UE |
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