CN103701569B - The method and device of transformat combination instruction TFCI decodings in TD SCDMA - Google Patents
The method and device of transformat combination instruction TFCI decodings in TD SCDMA Download PDFInfo
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Abstract
The invention provides a kind of method and device of transformat combination instruction TFCI decodings in TD SCDMA, methods described includes：Receiving step, receive radio frames；The radio frames include strange subframe and even subframe；Calculation procedure, signal to noise ratio corresponding to the strange subframe and even subframe is calculated respectively；Extraction step, the transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively；Whether judgment step, the number for the radio frames for judging to receive reach preset threshold value；If so, selecting step is then performed, if it is not, then returning to receiving step；Selecting step, choose the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；Combining step, the TFCI in the strange subframe and even subframe is spliced；Decoding procedure, row decoding is entered to the radio frames using spliced TFCI.The present invention decodes reliability and success rate under conditions of deterioration of eating dishes without rice or wine, to improve TFCI.
Description
Technical field
The present invention relates to the technical field of mobile communication, is indicated more particularly to transformat combination in a kind of TD-SCDMA
The method of TFCI decodings, and, the device of transformat combination instruction TFCI decodings in a kind of TD-SCDMA.
Background technology
At present, in TD-SCDMA (Time Division-Synchronous Code Division Multiple
Access, TD SDMA) in, UE (User Equipment, user equipment) passes through DCH (Dedicated
Channel, dedicated channel) sent out to UTRAN (Umts Terrestrial Radio Access Network, wireless access network)
Upstream data or control information are sent, when UE transmits DCH to UTRAN, is handled by bit-level and DCH data is mapped in DPCH
(Dedicated Physical Channel, DPCH), DPCH data are obtained after carrying out spectrum-spreading and scrambling, UE leads to again
Cross antenna and DPCH data are sent to UTRAN.When the DPCH data that UE is sent in UTRAN capture wireless environments, descrambling solution is carried out
DPCH data are obtained after expansion, UTRAN handles to obtain original DCH numbers to the obtained reverse bit-level of DPCH data progress afterwards
According to, and then the upstream data or control information wherein carried.
Wherein, when UTRAN carries out reverse bit-level processing to DPCH data, it is necessary first to know that UE sends DCH data
Transformat, and UTRAN passes through TFCI (the Transport Format that are carried in the DPCH data that are sent to UE
Combination Indicator, transformat combination instruction) the DCH data transmission formats that UE is sent are obtained, because TFCI is
The requisite information of reverse bit-level processing, once therefore TFCI translate mistake, the DCH data that UE is sent will be unable to correctly translate.
Therefore, one of the problem of those skilled in the art are in the urgent need to address is, proposes a kind of TFCI reliabilities decoding
Method, and, the device of a kind of TFCI reliabilities decoding, under conditions of deterioration of eating dishes without rice or wine, to improve TFCI decodings
Reliability and success rate.
The content of the invention
The technical problems to be solved by the invention are to provide transformat combination instruction TFCI decodings in a kind of TD-SCDMA
Method, and, in a kind of TD-SCDMA transformat combination instruction TFCI decoding device, in deterioration of eating dishes without rice or wine
Under conditions of, improve TFCI decoding reliabilities and success rate.
In order to solve the above problems, the invention discloses transformat combination instruction TFCI decodings in a kind of TD-SCDMA
Method, including：
Receiving step, receive radio frames；The radio frames include strange subframe and even subframe；
Calculation procedure, signal to noise ratio corresponding to the strange subframe and even subframe is calculated respectively；
Extraction step, the transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively；
Whether judgment step, the number for the radio frames for judging to receive reach preset threshold value；Step is chosen if so, then performing
Suddenly, if it is not, then returning to receiving step；
Selecting step, choose the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
Combining step, the TFCI in the strange subframe and even subframe is spliced；
Decoding procedure, row decoding is entered to the radio frames using spliced TFCI.
Preferably, the extraction step includes：
The transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively；
The TFCI in the strange subframe and even subframe is preserved to the first buffer area buffer1 and the second buffer area respectively
buffer2。
Preferably, before judgment step, in addition to：
Start counter Ntti；The counter Ntti is used for the number for calculating the radio frames received.
Preferably, the judgment step includes：
Judge whether the number for the radio frames that the counter Ntti is received exceedes preset threshold value；
If so, the number for the radio frames for then judging to receive reaches preset threshold value；
If it is not, the number for the radio frames for then judging to receive is not reaching to preset threshold value.
Preferably, the selecting step includes：
Sub-step S11, the TFCI in the strange subframe of signal to noise ratio highest is selected from the buffer1；
Sub-step S12, calculate signal to noise ratio corresponding to the TFCI in the buffer1 other strange subframes and highest signal to noise ratio
Difference；
Sub-step S13, judges whether the difference is less than preset threshold P_snr；If so, sub-step S14 is then performed, if
It is no, then perform sub-step S15；
Sub-step S14, the TFCI of other strange subframes and the TFCI of the strange subframe of signal to noise ratio highest are closed
And；
Sub-step S15, judge whether to have traveled through the TFCI of strange subframe in the buffer1；If so, then perform sub-step
S16, if it is not, then returning to sub-step S12；
Sub-step S16, end loop.
Preferably, the selecting step includes：
Sub-step S21, the TFCI of signal to noise ratio highest idol subframe is selected from the buffer2；
Sub-step S22, calculate signal to noise ratio corresponding to the TFCI in the buffer2 other even subframes and highest signal to noise ratio
Difference；
Sub-step S23, judges whether the difference is less than preset threshold P_snr；If so, sub-step S24 is then performed, if
It is no, then perform sub-step S25；
Sub-step S24, the TFCI of other even subframes and the TFCI of the signal to noise ratio highest idol subframe are closed
And；
Sub-step S25, judge whether to have traveled through the TFCI of even subframe in the buffer2；If so, then perform sub-step
S26, if it is not, then returning to sub-step S22；
Sub-step S26, end loop.
Preferably, the preset threshold P_snr is 2db.
The embodiment of the present invention additionally provides a kind of device of transformat combination instruction TFCI decodings in TD-SCDMA, bag
Include：
Receiving module, for receiving radio frames；The radio frames include strange subframe and even subframe；
Computing module, for calculating signal to noise ratio corresponding to the strange subframe and even subframe respectively；
Extraction module, TFCI is indicated for extracting the transformat combination in the strange subframe and even subframe respectively；
Whether judge module, the number of the radio frames for judging to receive reach preset threshold value；Chosen if so, then calling
Module, if it is not, then returning to receiving module；
Module is chosen, for choosing the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
Merging module, for the TFCI in the strange subframe and even subframe to be spliced；
Decoding module, for entering row decoding to the radio frames using spliced TFCI.
Preferably, the extraction module includes：
Extracting sub-module, TFCI is indicated for extracting the transformat combination in the strange subframe and even subframe respectively；
Submodule is preserved, for respectively preserving the TFCI in the strange subframe and even subframe to the first buffer area
Buffer1 and the second buffer area buffer2.
Preferably, described device also includes：
Starting module, for starting counter Ntti；The counter Ntti is used for for calculating the radio frames received
Number.
Preferably, the judge module includes：
Number judging submodule, whether the number of the radio frames received for judging the counter Ntti is more than preset
Threshold value；If so, the first decision sub-module is then called, if it is not, then calling the second decision sub-module；
First decision sub-module, the number of the radio frames for judging to receive reach preset threshold value；
Second decision sub-module, the number of the radio frames for judging to receive are not reaching to preset threshold value.
Preferably, the selection module includes：
Strange subframe highest signal to noise ratio chooses module, for selecting the strange subframe of signal to noise ratio highest from the buffer1
In TFCI；
Strange subframe mathematic interpolation submodule, for calculating noise corresponding to the TFCI in the buffer1 other strange subframes
Than the difference with highest signal to noise ratio；
Strange subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then
Strange subframe is called to merge submodule, if it is not, then calling strange subframe traversal submodule；
Strange subframe merges submodule, for by the TFCI of other strange subframes and the strange subframe of signal to noise ratio highest
TFCI is merged；
Strange subframe traversal submodule, for judging whether to have traveled through the TFCI of strange subframe in the buffer1；If so, then
Strange subframe end loop submodule is called, if it is not, then calling strange subframe mathematic interpolation submodule；
Strange subframe end loop submodule, for end loop.
Preferably, the selection module includes：
Even subframe highest signal to noise ratio chooses submodule, for selecting the even son of signal to noise ratio highest from the buffer2
The TFCI of frame；
Even subframe mathematic interpolation submodule, for calculating noise corresponding to the TFCI in the buffer2 other even subframes
Than the difference with highest signal to noise ratio；
Even subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then
Even subframe is called to merge submodule, if it is not, then calling even subframe traversal submodule；
Even subframe merges submodule, for by the TFCI of other even subframes and the signal to noise ratio highest idol subframe
TFCI is merged；
Even subframe travels through submodule, for judging whether to have traveled through the TFCI of even subframe in the buffer2；If so, then
Even subframe end loop submodule is called, if it is not, then calling even subframe mathematic interpolation submodule；
Even subframe end loop submodule, for end loop.
Compared with prior art, the present invention includes advantages below：
In embodiments of the present invention, by collecting the TFCI of the strange subframe of radio frames and even subframe in certain time, and root
It is believed that the higher strange subframe of taking-up reliability is you can well imagine in score of making an uproar and the TFCI of even subframe is merged, then the strange subframe by merging
Spliced with the TFCI of even subframe, obtain complete TFCI, finally further radio frames are carried out using the complete TFCI
Decoding.Due to being that the signal to noise ratio according to corresponding to radio frames chooses the higher TFCI of reliability to participate in embodiments of the present invention
Decoding, has excluded the relatively low TFCI of reliability, simple easily to realize, under conditions of deterioration of eating dishes without rice or wine, can improve TFCI
Decode reliability and success rate.
Brief description of the drawings
Fig. 1 be prior art a kind of TD-SCDMA in radio frames form schematic diagram；
Fig. 2 is a kind of schematic diagram of TFCI positions in radio frames of prior art；
The step of Fig. 3 is the embodiment of the method for transformat combination instruction TFCI decodings in a kind of TD-SCDMA of the present invention is flowed
Cheng Tu；
Fig. 4 is a kind of step flow chart of TFCI interpretation methods of the present invention；
Fig. 5 is the structural frames of the device embodiment of transformat combination instruction TFCI decodings in a kind of TD-SCDMA of the present invention
Figure.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
The schematic diagram of the form of radio frames in a kind of TD-SCDMA of prior art shown in reference picture 1, in TD-SCDMA
In, a 10ms radio frames (radio frame) includes two structure identical subframes (subframe), i.e., strange subframe and even son
Frame.Each sub-frame duration 5ms, each subframe include 7 business time-slots (timeslot) and 3 special time slots, wherein, institute
State the DwPTS (Downlink that 3 special time slots are respectively SYNC DL (Synchronous Downlink, down-going synchronous) code
Pilot Time Slot, descending pilot frequency time slot), send SYNC UL (Synchronous Uplink, uplink synchronous) code
UpPTS (Uplink Pilot Time Slot, uplink pilot time slot) and GP (protection time slot).
The TTI (Transmission Time Interval, transmission time interval) that UE sends DCH data can be included such as
Under several classes：10ms、20ms、40ms、80ms.UE, which is sent in TTI in each radio frames in DCH data, can carry TFCI.
The schematic diagram of a kind of TFCI positions in radio frames of prior art shown in reference picture 2, in the radio frames
Subframe includes data symbols (data symbol), midamble (intermediate code) respectively, wherein, the correlation of the TFCI in radio frames
Bit is divided into 4 parts, has been individually placed in two subframes of 10ms radio frames, therefore only needs to collect 4 part in radio frames
TFCI, you can row decoding is entered to radio frames.
At present, carrying out decoding scheme to radio frames using TFCI is：
When reaching TTI boundaries, when collecting a current 10ms radio frames, i.e., radio frames are carried out using TFCI
Decoding, also, in this, as the TFCI of follow-up whole DCH data decodings.
But can often occur the problem of bursty interference in wireless environments, therefore the different radio frame in a TTI
Signal to noise ratio can transmit TFCI it is possible that saltus step in each radio frames, if only with first radio frames in TTI
Entrained TFCI enters row decoding, in the case of by very strong bursty interference, it is likely that TFCI decoding errors occurs, causes
Whole DCH data are made not decode, and the situation for ultimately resulting in frame losing occurs.
Exactly inventor herein has found the seriousness of this problem, creatively proposes the core structure of the embodiment of the present invention
One of think to be, collect the TFCI and signal to noise ratio of the subframe of radio frames within a certain period of time, reliability is obtained according to signal to noise ratio
Merged again after higher TFCI, row decoding finally entered to radio frames using TFCI, so as to improve TFCI decoding success rates and
Reliability.
Reference picture 3, show that the method for transformat combination instruction TFCI decodings in a kind of TD-SCDMA of the present invention is implemented
The step flow chart of example, specifically may include steps of：
Receiving step 101, receive radio frames；The radio frames include strange subframe and even subframe；
In the specific implementation, demodulating end of eating dishes without rice or wine be in units of subframe acquisition data, every 10ms receive once send
By the baseband signal for eating dishes without rice or wine to send, the radio frames received are the data after transmitting terminal is modulated to baseband signal, are at end
Data after being encrypted according to certain format.Wherein, radio frames include two structure identical subframes (subframe), i.e.,
Strange subframe and even subframe.
Calculation procedure 102, signal to noise ratio corresponding to the strange subframe and even subframe is calculated respectively；
In actual applications, SNR (Signal to Noise Ratio, signal to noise ratio), also known as signal to noise ratio, signal to noise ratio number
Value is higher, and noise is smaller, and equipment antijamming capability is high.In the present invention is implemented, during SNR is collected, while can be with
The special measurement data of other radio frames are collected, for example, RSCP (Received Signal Code Power, reception signal
Code power).
Extraction step 103, the transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively；
In one preferred embodiment of the invention, the extraction step 103 can include following sub-step：
Step 103-1, the transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively；
Step 103-2, the TFCI in the strange subframe and even subframe is preserved to the first buffer area buffer1 and the respectively
Two buffer area buffer2.
In embodiments of the present invention, for the radio frames being collected into, respectively by the strange subframe of the radio frames and even subframe
TFCI corresponding bit is stored respectively in buffer1 and buffer2, and calculates and record the letter of strange subframe and even subframe respectively
Make an uproar ratio.
In one preferred embodiment of the invention, methods described can also comprise the following steps：
Start counter Ntti；The counter Ntti is used for the number for calculating the radio frames received.
In the specific implementation, being typically to collect the radio frames in a TTI, because the duration of a radio frames is
10ms, i.e., the numbers of the radio frames received in a TTI are fixed, therefore, judge whether to collect wireless in neat TTI
Frame, directly it can be judged by calculating the number of the radio frames received.Specifically, in embodiments of the present invention can be with
When starting to receive radio frames, counter Ntti is opened to calculate the number of radio frames, one whether is collected into count with this
Radio frames in TTI.
Whether judgment step 104, the number for the radio frames for judging to receive reach preset threshold value；If so, then perform selection
Step 105, if it is not, then returning to receiving step 101；
In one preferred embodiment of the invention, the judgment step 104 can include following sub-step：
Step 104-1, judges whether the number for the radio frames that the counter Ntti is received exceedes preset threshold value；If
It is then to perform step 104-2, if it is not, then performing step 104-3；
Step 104-2, the number for the radio frames for judging to receive reach preset threshold value；
Step 104-3, the number for the radio frames for judging to receive are not reaching to preset threshold value.
Specifically, when counter Ntti is added to the number for the radio frames that DCH data are a TTI, it is believed that
Complete the collection process of current radio frames.
Certainly, in actual applications preset threshold value can as the case may be depending on, such as could be arranged to two or
The number of the radio frames received in three TTI, the embodiment of the present invention are not restricted to this.
Selecting step 105, choose the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
In one preferred embodiment of the invention, the selecting step 105 can include following sub-step：
Sub-step S11, the TFCI in the strange subframe of signal to noise ratio highest is selected from the buffer1；
Sub-step S12, calculate signal to noise ratio corresponding to the TFCI in the buffer1 other strange subframes and highest signal to noise ratio
Difference；
Sub-step S13, judges whether the difference is less than preset threshold P_snr；If so, sub-step S14 is then performed, if
It is no, then perform sub-step S15；
Sub-step S14, the TFCI of other strange subframes and the TFCI of the strange subframe of signal to noise ratio highest are closed
And；
Sub-step S15, judge whether to have traveled through the TFCI of strange subframe in the buffer1；If so, then perform sub-step
S16, if it is not, then returning to sub-step S12；
Sub-step S16, end loop.
In one preferred embodiment of the invention, the selecting step 105 can include following sub-step：
Sub-step S21, the TFCI of signal to noise ratio highest idol subframe is selected from the buffer2；
Sub-step S22, calculate signal to noise ratio corresponding to the TFCI in the buffer2 other even subframes and highest signal to noise ratio
Difference；
Sub-step S23, judges whether the difference is less than preset threshold P_snr；If so, sub-step S24 is then performed, if
It is no, then perform sub-step S25；
Sub-step S24, the TFCI of other even subframes and the TFCI of the signal to noise ratio highest idol subframe are closed
And；
Sub-step S25, judge whether to have traveled through the TFCI of even subframe in the buffer2；If so, then perform sub-step
S26, if it is not, then returning to sub-step S22；
Sub-step S26, end loop.
In embodiments of the present invention, with reference to the strange subframe and the signal to noise ratio of even subframe for calculating and recording, respectively in buffer1
With TFCI corresponding to the strange subframe of signal to noise ratio highest and even subframe is found in buffer2.Wherein, for strange subframe：Calculate one by one
Other strange signal to noise ratio of subframe and the difference of highest signal to noise ratio, if being less than threshold value P_snr, by it with extracting before most
TFCI bits corresponding to the strange subframe of high s/n ratio carry out soft merging；For even subframe：The noise of other even subframes is calculated one by one
Than the difference with highest signal to noise ratio, if being less than threshold value P_snr, by itself and the even subframe of the highest signal to noise ratio extracted before
Corresponding TFCI bits carry out soft merging, the like, until by all strange subframes in buffer1 and buffer2 and even son
The TFCI of frame, which is traveled through, to be finished.
It should be noted that the merging process of strange subframe and even subframe can be carried out simultaneously in embodiments of the present invention,
This can be restricted with asynchronous progress, the embodiment of the present invention.In addition, signal to noise ratio can also be used out in embodiments of the present invention
Outside other radio frames basis for estimation of the related measurement data as reliability, such as RSCP, the embodiment of the present invention be same
This is not restricted.
Combining step 106, the TFCI in the strange subframe and even subframe is spliced；
Decoding procedure 107, row decoding is entered to the radio frames using spliced TFCI.
, then can be by strange subframe and even subframe in the specific implementation, when the merging process of strange subframe and even subframe terminates
TFCI is stitched together, and forming a complete TFCI can be to the decoding of radio frames.
In order that those skilled in the art further appreciate that the embodiment of the present invention, below using a specific example for
Bright TFCI decoding processes of the invention.
A kind of step flow chart of TFCI interpretation methods of the invention shown in reference picture 4, in embodiments of the present invention, can
So that P_snr is set as into 2db, specifically may include steps of：
Step S1, the wireless frame data eated dishes without rice or wine is received, received once per 10ms；
Step S2, the signal to noise ratio of strange subframe and even subframe is calculated and calculated respectively；
Step S3, extract the TFCI corresponding bits of strange subframe and even subframe and be stored respectively in buffer1 and buffer2
In；
Step S4, Ntti counter adds 1；、
Step S5, judges whether Ntti counters are added to TTI corresponding to DCH data；If so, step S6 is then performed, step
Rapid S7, and, step S12, if it is not, performing step S1；
Step S6, Ntti counter O reset；
Step S7, the strange subframe TFCI soft bits of signal to noise ratio highest in strange subframe are extracted in buffer1；
Step S8, calculate the difference of other strange subframe signal to noise ratio and highest signal to noise ratio in buffer1；
Step S9, judges whether the difference is less than thresholding P_snr；If so, step S10 is then performed, if it is not, performing step
S11；
Step S10, by the corresponding bit of this strange subframe and the carry out soft merging of highest signal to noise ratio；
Step S11, judge whether by the TFCI of all strange subframes in buffer1 and to finish；If so, then perform step
S17, if it is not, performing step S8；
Step S12, the strange subframe TFCI soft bits of signal to noise ratio highest in even subframe are extracted in buffer2；
Step S13, calculate the difference of other even subframe signal to noise ratio and highest signal to noise ratio in buffer2；
Step S14, judges whether the difference is less than thresholding P_snr；If so, step S15 is then performed, if it is not, performing step
Rapid S16；
Step S15, by the corresponding bit of this even subframe and the carry out soft merging of highest signal to noise ratio；
Step S16, judge whether by the TFCI of all even subframes in buffer2 and to finish；If so, then perform step
S17, if it is not, performing step S13；
Step S17, the strange subframe after soft merging and the TFCI corresponding bits of even subframe are combined；
Step S18, row decoding is entered to wireless frame data of eating dishes without rice or wine using TFCI.
Wherein, receiving terminal decoding process is that wireless frame data is first demodulated to soft bit, such as from -32, -31 ... 31,
32, this 64 number represents the probability between 0,1.This 64 numbers illustrate the possibility that this bit is 0 or 1, such as -32 tables
0 possibility maximum is shown as, 31 are expressed as 1 possibility maximum, and the rest may be inferred by analogy for it.Correspondingly, soft merging then refers to use soft ratio
Special form merges.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as to a series of action group
Close, but those skilled in the art should know, the application is not limited by described sequence of movement, because according to this Shen
Please, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know, specification
Described in embodiment belong to preferred embodiment, necessary to involved action not necessarily the application.
The device of transformat combination instruction TFCI decodings in a kind of TD-SCDMA of the invention shown in reference picture 5
Structured flowchart, it can specifically include following module：
Receiving module 201, for receiving radio frames；The radio frames include strange subframe and even subframe；
Computing module 202, for calculating signal to noise ratio corresponding to the strange subframe and even subframe respectively；
Extraction module 203, TFCI is indicated for extracting the transformat combination in the strange subframe and even subframe respectively；
In one preferred embodiment of the invention, the extraction module 203 can include：
Extracting sub-module, TFCI is indicated for extracting the transformat combination in the strange subframe and even subframe respectively；
Submodule is preserved, for respectively preserving the TFCI in the strange subframe and even subframe to the first buffer area
Buffer1 and the second buffer area buffer2.
In one preferred embodiment of the invention, described device can also include：
Starting module, for starting counter Ntti；The counter Ntti is used for for calculating the radio frames received
Number.
Whether judge module 204, the number of the radio frames for judging to receive reach preset threshold value；If so, then call
Module 205 is chosen, if it is not, then returning to receiving module 201；
In one preferred embodiment of the invention, the judge module 204 can include：
Number judging submodule, whether the number of the radio frames received for judging the counter Ntti is more than preset
Threshold value；If so, the first decision sub-module is then called, if it is not, then calling the second decision sub-module；
First decision sub-module, the number of the radio frames for judging to receive reach preset threshold value；
Second decision sub-module, the number of the radio frames for judging to receive are not reaching to preset threshold value.
Module 205 is chosen, for choosing the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
Merging module 206, for the TFCI in the strange subframe and even subframe to be spliced；
Decoding module 207, for entering row decoding to the radio frames using spliced TFCI.
In one preferred embodiment of the invention, the selection module 205 can include：
Strange subframe highest signal to noise ratio chooses module, for selecting the strange subframe of signal to noise ratio highest from the buffer1
In TFCI；
Strange subframe mathematic interpolation submodule, for calculating noise corresponding to the TFCI in the buffer1 other strange subframes
Than the difference with highest signal to noise ratio；
Strange subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then
Strange subframe is called to merge submodule, if it is not, then calling strange subframe traversal submodule；
Strange subframe merges submodule, for by the TFCI of other strange subframes and the strange subframe of signal to noise ratio highest
TFCI is merged；
Strange subframe traversal submodule, for judging whether to have traveled through the TFCI of strange subframe in the buffer1；If so, then
Strange subframe end loop submodule is called, if it is not, then calling strange subframe mathematic interpolation submodule；
Strange subframe end loop submodule, for end loop.
In one preferred embodiment of the invention, the selection module 205 can include：
Even subframe highest signal to noise ratio chooses submodule, for selecting the even son of signal to noise ratio highest from the buffer2
The TFCI of frame；
Even subframe mathematic interpolation submodule, for calculating noise corresponding to the TFCI in the buffer2 other even subframes
Than the difference with highest signal to noise ratio；
Even subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then
Even subframe is called to merge submodule, if it is not, then calling even subframe traversal submodule；
Even subframe merges submodule, for by the TFCI of other even subframes and the signal to noise ratio highest idol subframe
TFCI is merged；
Even subframe travels through submodule, for judging whether to have traveled through the TFCI of even subframe in the buffer2；If so, then
Even subframe end loop submodule is called, if it is not, then calling even subframe mathematic interpolation submodule；
Even subframe end loop submodule, for end loop.
For device embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, apparatus or computer program
Product.Therefore, the application can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the application scope.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
The method for indicating transformat combination in a kind of TD-SCDMA provided by the present invention TFCI decodings above, with
And in a kind of TD-SCDMA transformat combination instruction TFCI decodings device, be described in detail, tool used herein
Body example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands this hair
Bright method and its core concept；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, specific real
There will be changes in mode and application are applied, in summary, this specification content should not be construed as the limit to the present invention
System.
Claims (7)
1. a kind of method of transformat combination instruction TFCI decodings in TD-SCDMA, it is characterised in that including：
Receiving step, radio frames are received under conditions of deterioration of eating dishes without rice or wine；The radio frames include strange subframe and even subframe；
Calculation procedure, signal to noise ratio corresponding to the strange subframe and even subframe is calculated respectively；
Extraction step, the transformat combination instruction TFCI in the strange subframe and even subframe is extracted respectively, by the strange son of extraction
TFCI in frame is stored in the first buffer area buffer1, and, the TFCI in the even subframe of the extraction is stored in second and delayed
Deposit area buffer2；
Whether judgment step, the number for the radio frames for judging to receive reach preset threshold value；If so, selecting step is then performed, if
It is no, then return to receiving step；
Selecting step, choose the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
Wherein, the selecting step includes：
Sub-step S11, the TFCI in the strange subframe of signal to noise ratio highest is selected from the buffer1；
Sub-step S12, calculate the difference of signal to noise ratio and highest signal to noise ratio corresponding to the TFCI in the buffer1 other strange subframes
Value；
Sub-step S13, judges whether the difference is less than preset threshold P_snr；If so, sub-step S14 is then performed, if it is not,
Then perform sub-step S15；
Sub-step S14, the TFCI of other strange subframes and the TFCI of the strange subframe of signal to noise ratio highest are merged；
Sub-step S15, judge whether to have traveled through the TFCI of strange subframe in the buffer1；If so, sub-step S16 is then performed, if
It is no, then return to sub-step S12；
Sub-step S16, end loop；
The selecting step also includes：
Sub-step S21, the TFCI of signal to noise ratio highest idol subframe is selected from the buffer2；
Sub-step S22, calculate the difference of signal to noise ratio and highest signal to noise ratio corresponding to the TFCI in the buffer2 other even subframes
Value；
Sub-step S23, judges whether the difference is less than preset threshold P_snr；If so, sub-step S24 is then performed, if it is not,
Then perform sub-step S25；
Sub-step S24, the TFCI of other even subframes and the TFCI of the signal to noise ratio highest idol subframe are merged；
Sub-step S25, judge whether to have traveled through the TFCI of even subframe in the buffer2；If so, sub-step S26 is then performed, if
It is no, then return to sub-step S22；
Sub-step S26, end loop；
Combining step, the TFCI in strange subframe and even subframe selected in the selecting step is spliced；
Decoding procedure, row decoding is entered to the radio frames using spliced TFCI.
2. according to the method for claim 1, it is characterised in that before judgment step, in addition to：
Start counter Ntti；The counter Ntti is used for the number for calculating the radio frames received.
3. according to the method for claim 2, it is characterised in that the judgment step includes：
Judge whether the number for the radio frames that the counter Ntti is received exceedes preset threshold value；
If so, the number for the radio frames for then judging to receive reaches preset threshold value；
If it is not, the number for the radio frames for then judging to receive is not reaching to preset threshold value.
4. according to the method for claim 1, it is characterised in that the preset threshold P_snr is 2db.
A kind of 5. device of transformat combination instruction TFCI decodings in TD-SCDMA, it is characterised in that including：
Receiving module, for receiving radio frames under conditions of deterioration of eating dishes without rice or wine；The radio frames include strange subframe and even son
Frame；
Computing module, for calculating signal to noise ratio corresponding to the strange subframe and even subframe respectively；
Extraction module, TFCI is indicated for extracting the transformat combination in the strange subframe and even subframe respectively, is carried described
TFCI in the strange subframe taken is stored in the first buffer area buffer1, and, the TFCI in the even subframe of the extraction is preserved
In the second buffer area buffer2；
Whether judge module, the number of the radio frames for judging to receive reach preset threshold value；Mould is chosen if so, then calling
Block, if it is not, then returning to receiving module；
Module is chosen, for choosing the TFCI in the strange subframe and even subframe according to the signal to noise ratio respectively；
Wherein, the selection module includes：
Strange subframe highest signal to noise ratio chooses module, for being selected from the buffer1 in the strange subframe of signal to noise ratio highest
TFCI；
Strange subframe mathematic interpolation submodule, for calculate signal to noise ratio corresponding to the TFCI in the buffer1 other strange subframes with
The difference of highest signal to noise ratio；
Strange subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then call
Strange subframe merges submodule, if it is not, then calling strange subframe traversal submodule；
Strange subframe merges submodule, for by the TFCI of other strange subframes and the strange subframe of signal to noise ratio highest TFCI
Merge；
Strange subframe traversal submodule, for judging whether to have traveled through the TFCI of strange subframe in the buffer1；If so, then call
Strange subframe end loop submodule, if it is not, then calling strange subframe mathematic interpolation submodule；
Strange subframe end loop submodule, for end loop；
The selection module also includes：
Even subframe highest signal to noise ratio chooses submodule, for selecting signal to noise ratio highest idol subframe from the buffer2
TFCI；
Even subframe mathematic interpolation submodule, for calculate signal to noise ratio corresponding to the TFCI in the buffer2 other even subframes with
The difference of highest signal to noise ratio；
Even subframe difference judging submodule, for judging whether the difference is less than preset threshold P_snr；If so, then call
Even subframe merges submodule, if it is not, then calling even subframe traversal submodule；
Even subframe merges submodule, for by the TFCI of other even subframes and the signal to noise ratio highest idol subframe TFCI
Merge；
Even subframe travels through submodule, for judging whether to have traveled through the TFCI of even subframe in the buffer2；If so, then call
Even subframe end loop submodule, if it is not, then calling even subframe mathematic interpolation submodule；
Even subframe end loop submodule, for end loop；
Merging module, for the TFCI in strange subframe and even subframe selected in the selection module to be spliced；
Decoding module, for entering row decoding to the radio frames using spliced TFCI.
6. device according to claim 5, it is characterised in that also include：
Starting module, for starting counter Ntti；The counter Ntti is used for the number for calculating the radio frames received.
7. device according to claim 6, it is characterised in that the judge module includes：
Whether number judging submodule, the number of the radio frames received for judging the counter Ntti exceed preset threshold
Value；If so, the first decision sub-module is then called, if it is not, then calling the second decision sub-module；
First decision sub-module, the number of the radio frames for judging to receive reach preset threshold value；
Second decision sub-module, the number of the radio frames for judging to receive are not reaching to preset threshold value.
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| CN1878030A (en) * | 2005-06-08 | 2006-12-13 | 大唐移动通信设备有限公司 | Transmission format group indicated decoding method |
| CN101179290A (en) * | 2006-11-09 | 2008-05-14 | 大唐移动通信设备有限公司 | Wireless frame transmission method in time division-synchronization code division multiple access system |
| CN101873141A (en) * | 2009-04-22 | 2010-10-27 | 联芯科技有限公司 | TFCI (Transport Format Combination Inductor) decoding method and mobile terminal |
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