CN103067327B - Method for transmitting signals and signal transmitting apparatus - Google Patents
Method for transmitting signals and signal transmitting apparatus Download PDFInfo
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- CN103067327B CN103067327B CN201110325126.2A CN201110325126A CN103067327B CN 103067327 B CN103067327 B CN 103067327B CN 201110325126 A CN201110325126 A CN 201110325126A CN 103067327 B CN103067327 B CN 103067327B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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Abstract
The embodiment of the present invention provides a kind of communication means and communicator.This communication means includes: generating transmission signal, this transmission signal includes at least one symbol；Repeating to send symbol, the symbol wherein repeating to send has at least two phase place, repeats the number of times sent with designated symbol.The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol to repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
Description
Technical field
The present embodiments relate to wireless communication field, and more particularly, to method for transmitting signals and
Signal transmitting apparatus.
Background technology
For common WLAN, general covering radius only has about 100-200m, and IEEE
(Institute of Electrical and Electronics Engineers, Institute of Electrical and Electric Engineers)
The design requirement of 802.11ah agreement is so that maximal cover radius reaches 1km, and this will be conventional wireless office
The covering radius of territory net is greatly improved, and needs to introduce new characteristic the most in every respect wider array of to support simultaneously
Cover.
With OFDM (Orthogonal frequency-division multiplexing, OFDM) it is
As a example by system, high-speed data-flow is divided into several low rate data streams by this system, and by these several low speed datas
Stream is modulated on several orthogonal subcarrier transmission simultaneously.Therefore, OFDM belongs to overloading
Ripple (multi-carrier) transmission technology, so-called Multicarrier Transmission Technology refers to available spectrum imaging
Become multiple subcarrier, each subcarrier can carry a low rate data streams.Due to each subcarrier bandwidth relatively
Little, closer to coherence bandwidth, therefore the selectivity that can be effective against frequency is weak.
The resource of ofdm system has the concept of time-frequency domain two dimension, and the least unit of frequency domain is generally subcarrier,
The least unit of time domain is generally the time of an OFDM symbol.
Owing to wider array of covering supported by needs, a kind of simple way is to repeat OFDM symbol,
To increase its reception power.If be repeated once, the reception power that can double, if repeating N
Secondary, then can improve the reception power (N is positive integer) of N times.But, owing to repeating so that a frame number
Elongated according to duration, the corresponding step-down of spectrum utilization efficiency.
Prior art is to carry out OFDM symbol by the way of directly repeating or repeat to add frequency domain switching
Repeat.Number of repetition in IEEE 802.15 is fixing, therefore need not explicit instruction.But,
Fixing number of repetition underaction.If using unfixed number of repetition, by emitter and reception
Signalling exchange between machine determines number of repetition, then need the signaling consumption of increase system, and change
Frequency can not be too fast, the same underaction of such scheme.
Summary of the invention
The embodiment of the present invention provides a kind of method for transmitting signals and signal transmitting apparatus, it is possible to solve existing skill
The problem of the determination mode underaction of symbol number of repetition in art.
On the one hand, it is provided that a kind of method for transmitting signals, including: generate transmission signal, this transmission signal
Including at least one symbol；Repeating to send symbol, the symbol wherein repeating to send has at least two phase place,
The number of times sent is repeated with designated symbol.
On the other hand, it is provided that a kind of method for transmitting signals, including: receive and transmit signal, this transmission letter
Number include using at least one symbol repeating transmission mode；According to repeat send symbol had to
Few two kinds of phase places, determine that symbol repeats the number of times sent.
On the other hand, it is provided that a kind of signal transmitting apparatus, including: signal generating unit, it is used for generating transmission
Signal, this transmission signal includes at least one symbol；Transmitting element, is used for repeating to send above-mentioned generation list
Symbol included in the transmission signal that unit generates, the symbol that wherein this transmitting element repeats to send have to
Few two kinds of phase places, repeat the number of times sent with designated symbol.
On the other hand, it is provided that a kind of signal transmitting apparatus, including: reception unit, it is used for receiving transmission
Signal, this transmission signal includes using at least one symbol repeating transmission mode；Determine unit, be used for
At least two phase being had according to the symbol repeating to send in the transmission signal that above-mentioned reception unit receives
Position, determines that symbol repeats the number of times sent.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to embodiment or existing skill
In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property work on the premise of, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method for transmitting signals of one embodiment of the invention.
Fig. 2 is the flow chart of the method for transmitting signals of one embodiment of the invention.
Fig. 3 is the flow chart of the method for transmitting signals of another embodiment of the present invention.
Fig. 4 is the schematic diagram repeating transmission mode of one embodiment of the invention.
Fig. 5 is the schematic diagram repeating transmission mode of another embodiment of the present invention.
Fig. 6 is the schematic diagram repeating transmission mode of another embodiment of the present invention.
Fig. 7 is the schematic diagram repeating transmission mode of another embodiment of the present invention.
Fig. 8 is the schematic diagram repeating transmission mode of another embodiment of the present invention.
Fig. 9 is the schematic diagram repeating transmission mode of another embodiment of the present invention.
Figure 10 is the block diagram of the signal transmitting apparatus of one embodiment of the invention.
Figure 11 is the block diagram of the signal transmitting apparatus of another embodiment of the present invention.
Figure 12 is the block diagram of the signal transmitting apparatus of another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment be a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the property made work premise, broadly falls into the scope of protection of the invention.
Fig. 1 is the flow chart of the method for transmitting signals of one embodiment of the invention.The method of Fig. 1 is by signal
Transmitting terminal (such as emitter) perform.
101, generate transmission signal, this transmission signal includes at least one symbol.
Such as, for OFDM transmission signal, at least one symbol above-mentioned can be OFDM symbol,
Can include controlling signaling symbols, data symbol and other symbols etc..In order to make it easy to understand, hereinafter with
It is described as a example by ofdm system, but the embodiment of the present invention is not limited to this.Repeat to send symbol at needs
System in, all can apply the technology of the embodiment of the present invention.
Additionally, the embodiment of the present invention does not limits for the mode generating transmission signal, can be according to any existing
Some modes generate the transmission signal including at least one symbol.
102, repeat to send this symbol when symbol uses and repeats transmission mode, wherein repeat the symbol sent
There is at least two phase place, the number of times sent to indicate this symbol to repeat.
Alternatively, as an embodiment, the first modulation system and the second modulation system can be used to repeat to send out
Giving this symbol, wherein the first modulation system has 90 degree or the phase place of 270 degree relative to the second modulation system
Rotate.Or, use the first modulation system or the second modulation system that symbol is modulated, after modulation
Symbol carry out spreading with produce have at least two phase place for repeating the symbol sent.Both sides
Formula all can make the symbol repeating to send have different phase places.Such as, above-mentioned first modulation system is
BPSK (Binary Phase Shift Keying, binary phase shift keying), the second modulation system is QBPSK
(Quadrature Binary Phase Shift Keying, orthogonal binary phase-shift keying (PSK))；Vice versa.
Alternatively, as an embodiment, send out using the first modulation system and the second modulation system to repeat
In the case of sending symbol, the first modulation system can be used for each symbol when sending for the first time,
Follow-up repetition uses the second modulation system when sending.
Such as, for each symbol, the transmission of above-mentioned first time can be carried out continuously and follow-up repetition sends, i.e.
After having sent each symbol and repeated version thereof, retransmit next symbol.Or, carry out institute
After the first time having symbol sends, the follow-up repetition carrying out all symbols sends, and is i.e. distributing all symbols
After number (such as, all symbols corresponding to frame data), retransmit the entirety of above-mentioned all symbols
Repeated version.
Alternatively, as another embodiment, at least one symbol above-mentioned can include the first control signaling symbols,
Second controls signaling symbols and data symbol.In a step 102, the first control signaling symbols can be first
Secondary transmission and follow-up n times repeat all to use the first modulation system when sending；Second controls signaling symbols the
Once sending and repeat for follow-up M time to use when sending the second modulation system, second controls signaling in residue
Repeat for N-M time to use the first modulation system when sending；Data symbol repeats to send M after sending for the first time
Secondary.Wherein N and M is positive integer.
The most also will be in conjunction with object lesson, describe the embodiment of the present invention in detail repeats transmission mode.This
Outward, repeat transmission mode and can include at least one in the following manner: time domain repeats, frequency domain repeats, level
Connection repetition coder.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
Fig. 2 is the flow chart of the method for transmitting signals of one embodiment of the invention.The method of Fig. 2 is by signal
Receiving terminal (such as, receiver) perform, and corresponding with the method for Fig. 1, therefore will suitably save
Slightly repetitive description.
201, receive transmission signal, this transmission signal includes using at least one symbol repeating transmission mode.
Such as, for OFDM transmission signal, at least one symbol above-mentioned can be OFDM symbol,
Can include controlling signaling symbols, data symbol and other symbols etc..In order to make it easy to understand, hereinafter with
It is described as a example by ofdm system, but the embodiment of the present invention is not limited to this.Repeat to send symbol at needs
System in, all can apply the technology of the embodiment of the present invention.
202, at least two phase place being had according to the symbol repeating to send, determine that this symbol repeats to send
Number of times.
Alternatively, as an embodiment, can be come really by the real part energy of detection symbol and imaginary part energy
Determine the phase place of symbol.Specifically, for repeating each symbol sent, when the real part energy of symbol deducts
When the difference of imaginary part energy is higher than (or being not less than) threshold value A, determine that this symbol has first phase, and
And when the real part energy of symbol deducts the difference of imaginary part energy less than (or being not higher than)-A, determine this symbol
There is second phase.Wherein A is positive number.Then occurrence can be gone out according to first phase and/or second phase
Number, determines that symbol repeats the number of times sent.Here, as a nonrestrictive example, first phase
The phase place rotation of 90 degree or 270 degree can be had relative to second phase.
Alternatively, as another embodiment, follow-up determining that each symbol is carried out after sending for the first time
In the case of repeating, when sending, there is second phase, the occurrence number of second phase (is such as designated as N, N
For positive integer) add that the result of 1 gained repeats the number of times (i.e. N+1) sent as this symbol.As for often
The phase place that the first time of individual symbol sends, can be default value (such as, first phase), it is also possible to according to
Above-mentioned identical energy measuring mode judges phase place when this symbol sends for the first time.
Alternatively, as another embodiment, at least one symbol above-mentioned include the first control signaling symbols,
Second controls signaling symbols and data symbol.In the case, in step 202., it may be determined that the first control
Occurrence number N+1 of the first phase of signaling symbols processed, determines the second phase of the second control signaling symbols
Occurrence number M+1, then can determine that control signaling symbols is the according to occurrence number N+1 and M+1
Repeat after once sending to send n times, determine that data symbol repeats to send M time after sending for the first time, its
Middle N and M is positive integer.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
Fig. 3 is the flow chart of the method for transmitting signals of another embodiment of the present invention.The method of Fig. 3 is by signal
Receiving terminal (such as, receiver) perform.The difference of Fig. 3 with Fig. 2 is, the method for Fig. 3
Also include:
203, according to first phase and second phase, the symbol that counterweight recurrence is sent is demodulated.
Alternatively, as an embodiment, when symbol has first phase, the first modulation methods can be used
This symbol is demodulated by formula.When symbol has second phase, the second modulation system can be used symbol
It is demodulated.Such as, above-mentioned first modulation system can be BPSK, and the second modulation system can be
QBPSK；Vice versa.
Additionally, when the real part energy of symbol deducts the difference of imaginary part energy (comprise or do not wrap between-A and A
Containing critical value) time, use blind Detecting mode to be demodulated.So-called blind Detecting, i.e. receiver according to
Do not repeat, be repeated once, be repeated twice and gradually carry out attempting demodulation, merging and decode, and carry out CRC
(cyclic redundancy check, CRC) verifies, if CRC check is passed through, thinks
Detection is correct, stops next step action；If CRC check is not passed through, then continue to assume more weight
Attempt again, until reaching the maximum number of repetitions of receiving-transmitting sides agreement.
Alternatively, as another embodiment, use a kind of modulation system (the most above-mentioned in a step 102
First modulation system or the second modulation system) symbol is modulated, then make to repeat to send out by spread spectrum
In the case of the symbol sent has different phase places, the receiver of the embodiment of the present invention can first counterweight multiple connection
The symbol received carries out despreading process, then uses above-mentioned modulation system (the most above-mentioned first modulation system
Or second modulation system) be demodulated processing.
So, the embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates
This symbol repeats the number of times sent such that it is able to determines number of repetition neatly, and does not increase signaling consumption.
Meanwhile, the embodiment of the present invention can determine corresponding demodulation mode according to phase information.
Below, in conjunction with object lesson, it is described more fully some embodiments of the present invention.Should be understood that
Embodiment given here is to preferably help skilled in the art to understand the present invention, rather than incite somebody to action this
Invention is limited to these concrete forms.
Additionally, in the following embodiments, if the number of times that each symbol repeats is identical, then can only examine
Survey the number of repetition of one of them symbol, or detect the number of repetition of each symbol in multiple symbol
To improve the degree of accuracy of detection.It is described in case of the number of times that repeats by each symbol below is identical,
Therefore to succinct, depict only the repetition sender of two symbols (symbol 1 and symbol 2) in the drawings
Formula.But the embodiment of the present invention is not limited to this.Those skilled in the art's teaching according to embodiments of the present invention can
To clearly understand that, the principle of the embodiment of the present invention can be applied equally to each symbol and repeats not homogeneous
Number scene, and/or the symbol being applied to more than 2 repeat transmission scene.Such application each falls within
In the scope of the present invention.
Fig. 4 is the schematic diagram repeating transmission mode of one embodiment of the invention.In the fig. 4 embodiment,
Conventional letter is to control signaling symbols or data symbol, and number of repetition is N+1 time, when sending for the first time
Modulation system be BPSK, follow-up repeat send n times time modulation system be QBPSK (BPSK
Rotate plus the phase places of 90 degree).But the embodiment of the present invention is not limited to above-mentioned concrete modulation system.
As shown in Figure 4, at transmitting terminal, first BPSK is used to modulate symbol 1, then for symbol
The repeating part of 1 all uses QBPSK to modulate.Then, BPSK is used to modulate symbol 2, then
Repeating part for symbol 2 all uses QBPSK to modulate.Although not display in Fig. 4, but such as
There is more symbol in fruit, such as symbol 3,4 ..., then uses identical method to process.
At receiving terminal, first, the docking collection of letters number carries out the reception such as OFDM demodulation, equilibrium process, to solution
Signal before tune carries out energy measuring.First symbol received is symbol 1, and acquiescence one is set to BPSK,
So from second sign-on, may be the repetition of symbol 1, it is also possible to for next symbol (as
Symbol 2).Therefore from second sign-on, by energy measuring judge this modulation symbol be BPSK also
Being QBPSK, concrete determination methods is:
Arranging an energy threshold A, A is positive number.
If the data signal real part energy of this symbol is more than (or being not less than) A with the difference of imaginary part energy,
Then judge that this symbol is BPSK modulation.If the data signal real part energy of this symbol and imaginary part energy it
Difference less than (or being not higher than)-A, then judges that this symbol is QBPSK modulation.
Therefore, if this symbol is QBPSK, then it is assumed that this symbol is replicator, can be this symbol
Directly Soft Inform ation merging is carried out with symbol above after being soft demodulated.And if the modulation system of this symbol
For BPSK, then it is assumed that this symbol is next new symbol.In the case, can be according to QBPSK's
Occurrence number (i.e. n times) determines that this symbol repeats to have sent N+1 time altogether.
It is, however, possible in the case of signal to noise ratio (SNR, Signal to Noise Ratio) is relatively low, demodulation
There is obvious residual phase-noise in front planisphere, may be such that the bpsk signal constellation before demodulation
The real imaginary part energy of figure judges inaccurate, and now the data signal real part of this symbol and the difference of imaginary part energy are at-A
Between A, then judge that this symbol is not the most neither QBPSK as BPSK.Now receiver is thought and is passed through
Whether repeating of modulation system implicit expression instruction is inaccurate, it will use the mode of blind Detecting to be demodulated.
So-called blind Detecting, i.e. receiver according to not repeating, be repeated once, be repeated twice gradually to carry out to attempt to demodulate,
Merge and decoding, and carry out CRC check, if CRC check is passed through, think that detection is correct, stop
Only next step action；If CRC check is not passed through, then continue to assume to repeat more frequently to attempt,
Until reaching the maximum number of repetitions of receiving-transmitting sides agreement.
Above embodiment uses two kinds of modulation systems with 90 degree of phase differences so that repeat the symbol sent
Number there is out of phase.As another implementation, can be only with a kind of modulation system, such as BPSK.
In the case, after BPSK modulates, carry out constellation rotation again, such as the signal of BPSK modulation is existed
Time domain uses following sequence to spread:
[1j], j is imaginary unit.
This sequence is multiplied with original symbol, obtains [symbol 1, j* symbol 1], the effect of above sequence
It is that first original symbol is carried out the repetition of 1 times, is then repeated 90 degree by the first of symbol
Phase place rotates (being multiplied by the effect of j).Other frequency expansion sequence, such as [1-j] is used also to be able to the effect obtaining being similar to
Really, simply original symbol has been carried out the rotation (being multiplied by-j) of 270 degree.In a word, it is all by the constellation of real axis
Point rotates in the imaginary axis.
For using the mode of spread spectrum, need sending and receiving end to make an appointment one group of frequency expansion sequence, such as repeat
Once using [1j], be repeated twice employing [1j-j], be repeated four times employing [1j-jj], the rest may be inferred.Connecing
First receiving end or judges number of repetition, then according to the spread spectrum corresponding to number of repetition by energy measuring
Sequence de-spreads.
So, the symbol also making to repeat to send has out of phase, implicitly designated symbol repeat time
Number, and do not increase signaling burden.
Fig. 5 is the schematic diagram repeating transmission mode of another embodiment of the present invention.The embodiment of Fig. 5 and figure
The embodiment of differring primarily in that of the embodiment of 4: Fig. 5 is by all original symbols (such as symbol 1
Be positive integer to symbol X, X) launched after, carry out an overall repetition later.With Fig. 4
Embodiment compare, the embodiment of Fig. 5 can utilize symbol 1 to first time of symbol X repeat all
Signal entirety carries out an energy and judges, so can improve signal to noise ratio, improve the reliable of judged result
Property, it is therefore desirable to the probability of blind check is lower.
Additionally, in the repetitive mode of Fig. 5, owing to symbol 1 and its time repeating to be separated by are longer, due to
The time-varying characteristics of wireless channel environment, also can make call sign 1 and its repeat to experience different declines, thus
Bring the diversity of time fading rise, i.e. time diversity (Time diversity) gain.
Other aspects of the embodiment of Fig. 5 are similar with Fig. 4, are not described in detail.Such as, send out for the first time
When sending symbol 1 to symbol X, BPSK is used to be modulated.When follow-up entirety repeats to send, use
QBPSK is modulated.Or according to the above-mentioned mode first modulated and spread afterwards.Two ways all makes to repeat
The symbol sent has out of phase, the number of times that implicitly designated symbol repeats, and does not increase signaling burden.
The embodiment of Fig. 4 and Fig. 5 employ time domain repeat repeat transmission mode, the embodiment of the present invention is also
Other can be applied to repeat transmission mode, such as frequency domain repetitive mode.Fig. 6 is another embodiment of the present invention
Repeat the schematic diagram of transmission mode.In the embodiment of Fig. 6, symbol is realized the repetition on frequency domain.
As shown in Figure 6, being with the difference of the embodiment of Fig. 4, now emitter is at different frequencies
Repeat in rate fragment, and receiver needs to carry out energy measuring in different frequency fragments to judge
Whether there is repetition and be repeated several times by.Concrete modulation system, energy measuring process and demodulation mode and figure
4 embodiments are similar to, and are therefore not repeated to describe.
So so that the symbol repeating to send has out of phase, the number of times that implicitly designated symbol repeats,
And do not increase signaling burden.
Fig. 7 is the schematic diagram repeating transmission mode of another embodiment of the present invention.The embodiment of Fig. 7 uses
Time domain repeats to add the mode of frequency domain switching.
It should be noted that in Fig. 7 succinct in order to draw, illustrate only 2 symbols and repeat to send the example of 2 times,
The embodiment of the present invention is not limited to this, can be equally used for more symbol and repeats to send more situation.
So so that the symbol repeating to send has out of phase, the number of times that implicitly designated symbol repeats,
And do not increase signaling burden.
Close additionally, the embodiment of Fig. 7 exchanges the mapping in subcarrier in frequency domain of the data of twice replicator
System.Due to wireless many upper sidebands when environment brings frequency domain selectivity, symbol 1 and symbol 1 to repeat
The decline that data experience is different, so can bring the diversity of frequency domain fading rise, i.e. frequency diversity
(Frequency diversity) gain.
It addition, the mode that time domain repeats and frequency domain repeats can also be applied in combination.Fig. 8 be the present invention another
The schematic diagram repeating transmission mode of embodiment.The embodiment of Fig. 8 uses time domain to repeat to add what frequency domain repeated
Mode.It should be noted that in Fig. 8 succinct in order to draw, illustrate only 2 symbols and repeat to send the example of 5 times
Son, the embodiment of the present invention is not limited to this, can be equally used for more symbol and repeats to send more times or more
The situation of few time.
According to the embodiment of Fig. 8, the symbol repeating to send also can be made to have out of phase, implicitly refer to
Show the number of times that symbol repeats, and do not increase signaling burden.
Additionally, the embodiment of the present invention can with use cascade repetition coder repeat transmission mode.At this
Under mode, repeat by cascading a repetition coder after data in encoded again.
If there is no interleaver after repeated encoding, then which with the embodiment of Fig. 4 is in result
Valency.If cascading an interleaver after repetition coder again, then with Fig. 4's in the content repeated
Embodiment is slightly distinguished.Such as: for the embodiment of Fig. 4, it is assumed that repeating to send 2 times, symbol 1 wraps
Containing bit b1, b2, b3, then symbol 1 repeat also to comprise b1, b2, b3；And friendship is added for repetition coder
Knit the situation of device, owing to interleaver may upset putting in order of bit, it may be possible to symbol 1 comprises ratio
Special b1, b2, b2, the duplicate packages of symbol 1 b1 Han bit, b3, b3.
In this case, transmitting terminal and receiving terminal need to consult a kind of interleaving mechanism in advance, it is ensured that receive
End can correctly deinterleave.The behavior of receiving terminal is substantially similar, first needs for according to energy measuring pair
Number of repetition judges, the most again the information of number of repetition is delivered to deinterleaver and decoder so that it is
Deinterleaving and decoding that can be correct.
So, the symbol enabling to equally repeat to send has out of phase, implicitly designated symbol weight
Multiple number of times, and do not increase signaling burden.Additionally, cascade repetition coder can also be with other two kinds of weights
Recurrence send mode to be applied in combination, and for avoiding repeating, repeats no more.
Fig. 9 is the schematic diagram repeating transmission mode of another embodiment of the present invention.In the embodiment of Fig. 9,
The out of phase controlling signaling symbols repeating to send, implicitly instruction is used to control the repetition of signaling symbols
Transmission times, the most implicitly indicates the repetitive mode of data symbol.
During typical reception, first pass through synchronizing sequence detection and obtain lock in time, then pass through
Pilot tone carries out channel and estimates to be demodulated control signaling, finally by pilot channel estimation and control letter
Data are carried out by the message (including the modulation coding mode of data acquisition and the length etc. of data) in order
Detection.Therefore, detecting before the detection of data symbol, so control can be used of signaling symbols is controlled
The number of repetition of the out of phase instruction data symbol of signaling symbols.Assume that each control signaling symbols repeats
Sending N+1 time, each data symbol repeats to send M+1 time.
Specifically, as shown for example in fig. 9, control signaling symbols 1 and repeat all to use BPSK
Modulation, front M+1 symbol of symbol 2 uses QBPSK to modulate, after N-M symbol remain as
BPSK modulates.
Each data symbol repeats to send M+1 time, can repeat by any means to send.Such as, repeat to send out
The data symbol sent can have identical phase place or use identical modulation system.
The purpose of do so is, receiving terminal can be by controlling signaling symbols 1 and its another modulation system
Number of repetition N, determines number of repetition N+1 controlling signaling itself.It addition, again by controlling signaling symbol
In numbers 2, the M of implicit expression instruction, determines number of repetition M+1 of subsequent data symbol.How N and M is connecing
The process that receiving end obtains is same as the previously described embodiments, repeats no more here.
Embodiment according to Fig. 9, it is possible to make the symbol repeating to send have out of phase, implicitly refer to
Show the number of times that symbol repeats, and do not increase signaling burden.Additionally, repeat the phase place of the data symbol sent
Or modulation system is without being restricted, it is achieved mode is more flexible.
Figure 10 is the block diagram of the signal transmitting apparatus of one embodiment of the invention.The signal transmission dress of Figure 10
Putting 90 is the transmitting terminal of data, such as, can be emitter, including signal generating unit 91 and transmitting element 92.
Signal generating unit 91 generates transmission signal, and this transmission signal includes at least one symbol.Transmitting element
92 repeat to send symbol included in the transmission signal that signal generating unit 91 generates, wherein transmitting element 92
The symbol repeating to send has at least two phase place, the number of times sent to indicate this symbol to repeat.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
The signal transmitting apparatus 90 of Figure 10 can realize each step of the method for Fig. 1, or can realize figure
About modulation, the various modes of transmission in the embodiment of 4 to Fig. 9, for avoiding repeating, retouch the most in detail
State.
Alternatively, as an embodiment, transmitting element 92 can use the first modulation system and the second modulation
Mode repeats to send symbol, and wherein the first modulation system has 90 degree or 270 relative to the second modulation system
The phase place of degree rotates.Or, transmitting element 92 can use the first modulation system or the second modulation system to symbol
Number be modulated, the symbol after modulation is spread with produce have at least two phase place for repeating
The symbol sent.
Alternatively, as another embodiment, transmitting element 92 can send for the first time for each symbol
Time use the first modulation system, follow-up repeat send time use the second modulation system.
Alternatively, as another embodiment, transmitting element 92 can be carried out continuously first for each symbol
Secondary transmission and follow-up repetition send (described in the embodiment of such as Fig. 4).Or, transmitting element 92 can be
After carrying out the first time transmission of all symbols, the follow-up repetition carrying out all symbols sends (such as Fig. 5
Embodiment described in).
Alternatively, as another embodiment (described in the embodiment of such as Fig. 9), at least one symbol above-mentioned
Including the first control signaling symbols, the second control signaling symbols and data symbol.Transmitting element 92 can make
First controls signaling symbols all uses the first modulation methods when sending and repeat send with follow-up n times for the first time
Formula so that second controls signaling symbols uses the second tune when sending and repeat for follow-up M time to send for the first time
Mode processed so that second controls signaling uses the first modulation system when residue repeats for N-M time and sends, with
And make data symbol repeat to send M time after sending for the first time, wherein N and M is positive integer.
Alternatively, as another embodiment, above-mentioned first modulation system is BPSK, the second modulation system
For QBPSK；Vice versa.
Alternatively, as another embodiment, transmitting element 92 can repeat in transmission mode extremely according to following
Few one repeats to send described symbol: time domain repeats, frequency domain repeats, cascade repetition coder.
Figure 11 is the block diagram of the signal transmitting apparatus of another embodiment of the present invention.The signal transmission dress of Figure 11
Putting 100 is the receiving terminal of data, such as, can be receiver, including receiving unit 11 and determining unit
12。
Receiving unit 11 and receive transmission signal, this transmission signal includes using and repeats at least the one of transmission mode
Individual symbol.Determine that unit 12 is according to receiving the symbol institute repeating to send in the transmission signal that unit 11 receives
At least two phase place having, determines that symbol repeats the number of times sent.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
Alternatively, as an embodiment, determine unit 12 can for repeating each symbol sent, when
The real part energy of symbol deduct the difference of imaginary part energy higher than or when being not less than threshold value A, determine that this symbol has
There is first phase, and when the difference that the real part energy of symbol deducts imaginary part energy is less than or is not higher than-A,
Determine that this symbol has second phase.Determine that unit 12 also can be according to first phase and/or second phase
Occurrence number, determines that symbol repeats the number of times sent.
Such as, determine that unit 12 can determine that each symbol carries out follow-up repetition after sending for the first time and sends out
In the case of there is second phase when sending, using the occurrence number of second phase plus 1 gained result as
This symbol repeats the number of times (described in the embodiment of such as Fig. 4 or Fig. 5) sent.
Alternatively, as another embodiment (described in the embodiment of such as Fig. 9), at least one symbol above-mentioned
Including the first control signaling symbols, the second control signaling symbols and data symbol.Determine that unit 12 can determine that
First occurrence number N+1 of first phase controlling signaling symbols, determines the of the second control signaling symbols
Occurrence number M+1 of two phase.It is then determined that unit 12 can be according to occurrence number N+1 and M+1, really
Surely control signaling symbols to repeat to send n times after sending for the first time, determine that data symbol sends for the first time
After repeat send M time, wherein N and M is positive integer.
Alternatively, as another embodiment, above-mentioned first phase relative to second phase have 90 degree or
The phase place of 270 degree rotates.
Figure 12 is the block diagram of the signal transmitting apparatus of another embodiment of the present invention.The signal transmission dress of Figure 12
Put all parts of 110 signal transmitting apparatus 100 including Figure 10, additionally include demodulating unit 13,
For according to first phase and second phase, the symbol that counterweight recurrence is sent is demodulated.
Such as, demodulating unit 12 may be used for, when symbol has first phase, using the first modulation system
Symbol is demodulated；When symbol has second phase, use the second modulation system that symbol is solved
Adjust；When the real part energy of symbol deduct the difference of imaginary part energy between-A and A time, use blind Detecting mode
It is demodulated.
Alternatively, as an embodiment, above-mentioned first modulation system is BPSK, the second modulation system
For QBPSK, vice versa.
The embodiment of the present invention makes the symbol repeating to send have different phase places, implicitly indicates this symbol
Repeat the number of times sent such that it is able to determine number of repetition neatly, and do not increase signaling consumption.
The signal transmitting apparatus 110 of the signal transmitting apparatus 100 and Figure 12 of Figure 11 can realize Fig. 2 or figure
Each step of the method for 3, or can realize in the embodiment of Fig. 4 to Fig. 9 secondary about receiving, repeating
Number detection and the various modes of demodulation, for avoiding repeating, be not described in detail.
Communication system according to embodiments of the present invention can include said apparatus 90,100 or 110.
Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description
The unit of example and algorithm steps, it is possible to electronic hardware or computer software and the knot of electronic hardware
Incompatible realization.These functions perform with hardware or software mode actually, depend on the spy of technical scheme
Fixed application and design constraint.Professional and technical personnel can use not Tongfang to each specifically should being used for
Method realizes described function, but this realization is it is not considered that beyond the scope of this invention.
Those skilled in the art is it can be understood that arrive, and for convenience and simplicity of description, above-mentioned retouches
The specific works process of system, device and the unit stated, is referred to the correspondence in preceding method embodiment
Process, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, device and
Method, can realize by another way.Such as, device embodiment described above is only shown
Meaning property, such as, the division of described unit, be only a kind of logic function and divide, actual can when realizing
There to be other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another
System, or some features can ignore, or do not perform.Another point, shown or discussed each other
Coupling direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit
Or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, makees
The parts shown for unit can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Can select according to the actual needs part therein or
The whole unit of person realizes the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit,
Can also be that unit is individually physically present, it is also possible to two or more unit are integrated in a list
In unit.
If described function realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, the present invention's
Part or the part of this technical scheme that prior art is contributed by technical scheme the most in other words can
Embodying with the form with software product, this computer software product is stored in a storage medium,
Including some instructions with so that computer equipment (can be personal computer, server, or
The network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And it is aforesaid
Storage medium includes: USB flash disk, portable hard drive, read-only storage (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can
To store the medium of program code.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
In this, any those familiar with the art, can be easily in the technical scope that the invention discloses
Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention
Scope should described be as the criterion with scope of the claims.
Claims (16)
1. a method for transmitting signals, it is characterised in that including:
Transmitting terminal generates transmission signal, and described transmission signal includes at least one symbol；
Described transmitting terminal repeats to send described symbol, and the described symbol wherein repeating to send has at least two
Phase place, the number of times sent to indicate described symbol to repeat；
Described transmitting terminal repeats to send described symbol, including:
Described transmitting terminal uses the first modulation system and the second modulation system to repeat to send described symbol, wherein
The phase place that described first modulation system has 90 degree or 270 degree relative to described second modulation system rotates；
Described transmitting terminal uses the first modulation system and the second modulation system to repeat to send described symbol, including:
Described transmitting terminal, for each symbol, uses the first modulation system, follow-up when sending for the first time
Repeat to use the second modulation system when sending；
Described transmitting terminal, for each symbol, uses the first modulation system, follow-up when sending for the first time
Repeat to use the second modulation system when sending, including:
Described transmitting terminal, after the first time carrying out all symbols sends, carries out the follow-up heavy of all symbols
Recurrence is sent.
2. the method for claim 1, it is characterised in that described first modulation system is binary system
Phase-shift keying (PSK) BPSK, described second modulation system is orthogonal binary phase-shift keying (PSK) QBPSK.
3. method as claimed in claim 1 or 2, it is characterised in that described transmitting terminal repeats to send institute
State symbol, repeat to send described symbol including according at least one repeated in transmission mode following: time domain
Repeat, frequency domain repeats, cascade repetition coder.
4. a method for transmitting signals, it is characterised in that including:
The transmission signal that receiving terminal receiving end/sending end sends, described transmission signal includes using repetition sender
At least one symbol of formula, described transmitting terminal, when sending described transmission signal, carries out the of all symbols
After once sending, the follow-up repetition carrying out all symbols sends；
At least two phase place that described receiving terminal is had according to the described symbol repeating to send, determines described
Symbol repeats the number of times sent；
At least two phase place that described receiving terminal is had according to the described symbol repeating to send, determines described
Symbol repeats the number of times sent, including:
Described receiving terminal is for repeating each symbol sent, when the real part energy of described symbol deducts imaginary part
When the difference of energy is higher than or is not less than threshold value A, determine that described symbol has first phase, and when symbol
Number real part energy deduct the difference of imaginary part energy less than or during not higher than-A, determine that described symbol has second
Phase place, wherein A is positive number；
Described receiving terminal, according to first phase and/or the occurrence number of second phase, determines that described symbol repeats
The number of times sent；
Described receiving terminal, according to first phase and/or the occurrence number of second phase, determines that described symbol repeats
The number of times sent, including:
Described receiving terminal determine each symbol carry out after sending for the first time follow-up repeat and send time have
In the case of second phase, the occurrence number of second phase is added, and the result of 1 gained is as described symbol
Repeat the number of times sent.
5. method as claimed in claim 4, it is characterised in that described first phase is relative to described the
Two phase has the phase place of 90 degree or 270 degree and rotates.
6. the method as described in claim 4 or 5, it is characterised in that described method also includes:
Described receiving terminal is demodulated according to described first phase and second phase, the symbol that counterweight recurrence is sent.
7. method as claimed in claim 6, it is characterised in that described receiving terminal is according to described first phase
Position and second phase, the symbol that counterweight recurrence is sent is demodulated, including:
When described symbol has first phase, described receiving terminal uses the first modulation system to described symbol
It is demodulated；
When described symbol has second phase, described receiving terminal uses the second modulation system to described symbol
It is demodulated；
When the real part energy of described symbol deduct the difference of imaginary part energy between-A and A time, described receiving terminal
Blind Detecting mode is used to be demodulated.
8. method as claimed in claim 7, it is characterised in that described first modulation system is binary system
Phase-shift keying (PSK) BPSK, described second modulation system is orthogonal binary phase-shift keying (PSK) QBPSK.
9. a signal transmitting apparatus, it is characterised in that including:
Signal generating unit, is used for generating transmission signal, and described transmission signal includes at least one symbol；
Transmitting element, is used for repeating to send symbol included in the transmission signal that described signal generating unit generates,
The described symbol that wherein said transmitting element repeats to send has at least two phase place, to indicate described symbol
Repeat the number of times sent；
Described transmitting element is described specifically for using the first modulation system and the second modulation system to repeat transmission
Symbol, wherein said first modulation system has 90 degree or 270 degree relative to described second modulation system
Phase place rotates；
Described transmitting element is specifically for for each symbol, using the first modulation methods when sending for the first time
Formula, follow-up repeat send time use the second modulation system；
After described transmitting element is specifically for sending in the first time carrying out all symbols, carry out all symbols
Number follow-up repeat send.
10. device as claimed in claim 9, it is characterised in that described first modulation system is two to enter
Phase-shift keying (PSK) BPSK processed, described second modulation system is orthogonal binary phase-shift keying (PSK) QBPSK.
11. devices as described in any one of claim 9 or 10, it is characterised in that described transmitting element
Specifically for repeating to send described symbol according at least one repeated in transmission mode following: time domain repeats,
Frequency domain repeats, cascade repetition coder.
12. 1 kinds of signal transmitting apparatus, it is characterised in that including:
Receiving unit, the transmission signal sent for receiving end/sending end, described transmission signal includes using weight
At least one symbol of mode is sent in recurrence, and described transmitting terminal, when sending described transmission signal, owns
After the first time of symbol sends, the follow-up repetition carrying out all symbols sends；
Determine unit, in the transmission signal received according to described reception unit, repeat the described symbol sent
Number at least two phase place being had, determines that described symbol repeats the number of times sent；
Described determine unit specifically for for repeat send each symbol, when the real part energy of described symbol
Amount deduct the difference of imaginary part energy higher than or when being not less than threshold value A, determine that described symbol has first phase,
And when the difference that the real part energy of symbol deducts imaginary part energy is less than or is not higher than-A, determine described symbol
Having second phase, wherein A is positive number；According to first phase and/or the occurrence number of second phase, really
Fixed described symbol repeats the number of times sent；
Described determine that unit is specifically for determining that each symbol carries out follow-up repetition after sending for the first time
In the case of there is second phase during transmission, the occurrence number of second phase is made plus the result of 1 gained
The number of times sent is repeated for described symbol.
13. devices as claimed in claim 12, it is characterised in that described first phase is relative to described
Second phase has the phase place of 90 degree or 270 degree and rotates.
14. devices as described in any one of claim 12 or 13, it is characterised in that described device is also
Including demodulating unit, for according to described first phase and second phase, the symbol that counterweight recurrence is sent is carried out
Demodulation.
15. devices as claimed in claim 14, it is characterised in that according to demodulating unit specifically for working as
When described symbol has first phase, use the first modulation system that described symbol is demodulated；When described
When symbol has second phase, use the second modulation system that described symbol is demodulated；When described symbol
Real part energy deduct the difference of imaginary part energy between-A and A time, use blind Detecting mode be demodulated.
16. devices as claimed in claim 15, it is characterised in that described first modulation system is two to enter
Phase-shift keying (PSK) BPSK processed, described second modulation system is orthogonal binary phase-shift keying (PSK) QBPSK.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110325126.2A CN103067327B (en) | 2011-10-24 | 2011-10-24 | Method for transmitting signals and signal transmitting apparatus |
| PCT/CN2012/083423 WO2013060268A1 (en) | 2011-10-24 | 2012-10-24 | Signal transmission method and signal transmission device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110325126.2A CN103067327B (en) | 2011-10-24 | 2011-10-24 | Method for transmitting signals and signal transmitting apparatus |
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| CN107113264B (en) * | 2015-01-28 | 2020-04-14 | 华为技术有限公司 | Differential signal transmission method, sending end equipment and receiving end equipment |
| CN104753846B (en) * | 2015-03-24 | 2018-10-12 | 江苏中兴微通信息科技有限公司 | A kind of method and apparatus of detection single-carrier modulated and OFDM modulation |
| CN106559368B (en) * | 2015-09-28 | 2020-10-09 | 华为技术有限公司 | Data frame identification method, data frame modulation method, related device and system |
| CN105871984A (en) * | 2015-12-11 | 2016-08-17 | 乐视网信息技术（北京）股份有限公司 | Information pushing and display method and corresponding apparatus |
| CN113839764A (en) * | 2017-03-06 | 2021-12-24 | 上海朗桦通信技术有限公司 | Method and device used in user equipment and base station for dynamic scheduling |
| CN109150377B (en) * | 2017-06-16 | 2021-01-29 | 维沃移动通信有限公司 | Information sending method, information receiving method, network side equipment and terminal equipment |
| CN109428626B (en) * | 2017-09-05 | 2021-02-12 | 华为技术有限公司 | Signal transmission method, related equipment and system |
| CN109246041B (en) * | 2018-09-17 | 2021-02-26 | 航天恒星科技有限公司 | R-CSK double-rate composite telegraph text signal broadcasting control method |
| WO2024165047A1 (en) * | 2023-02-10 | 2024-08-15 | Mediatek Inc. | Time domain symbol repetition for enhanced long range wi-fi |
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| CN1573671A (en) * | 2003-06-16 | 2005-02-02 | 株式会社华科姆 | Position pointing device |
| CN101675672A (en) * | 2007-05-02 | 2010-03-17 | 诺基亚公司 | Method, apparatus and computer program product for signaling allocation of neighbor cells |
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| CN1917383A (en) * | 2005-08-17 | 2007-02-21 | 西门子（中国）有限公司 | Method and device for sending out data in wireless mobile communication system |
| CN101162961B (en) * | 2006-10-12 | 2012-09-26 | 北京三星通信技术研究有限公司 | Method and system of preventing co-channel interference |
| WO2010069095A1 (en) * | 2008-12-19 | 2010-06-24 | 上海贝尔股份有限公司 | A self-adapting harq method, apparatus and device |
| KR101007433B1 (en) * | 2008-12-31 | 2011-01-12 | 주식회사 세아네트웍스 | Method and Apparatus for Transmitting Data Using Transmission Diversity |
| JP2010258599A (en) * | 2009-04-22 | 2010-11-11 | Sony Corp | Wireless communication apparatus, wireless communication method, computer program, and wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573671A (en) * | 2003-06-16 | 2005-02-02 | 株式会社华科姆 | Position pointing device |
| CN101675672A (en) * | 2007-05-02 | 2010-03-17 | 诺基亚公司 | Method, apparatus and computer program product for signaling allocation of neighbor cells |
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