CN102227896A - Signal transmission method, transmission end and reception end - Google Patents
Signal transmission method, transmission end and reception end Download PDFInfo
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- CN102227896A CN102227896A CN2009801464570A CN200980146457A CN102227896A CN 102227896 A CN102227896 A CN 102227896A CN 2009801464570 A CN2009801464570 A CN 2009801464570A CN 200980146457 A CN200980146457 A CN 200980146457A CN 102227896 A CN102227896 A CN 102227896A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
Abstract
A signal transmission method, transmission end and reception end are provided, which can give consideration to the efficiency of data transmission and the accuracy of data modulation and demodulation. The signal transmission method includes: at the time or frequency position close to a reference signal, data is modulated with high order modulation mode, and at the time or frequency position away from the reference signal, data is modulated with low order modulation mode (S21); and the reference signal and the modulated data are transmitted (S22). The signal transmission method can give consideration to the efficiency of data transmission and the accuracy of data modulation and demodulation.
Description
A kind of method for transmitting signals, transmitting terminal and receiving terminal technical field
The present invention relates to communication technical field, more particularly to a kind of method for transmitting signals, transmitting terminal and receiving terminal.
Background technology
Wireless communication resources can be with resource unit（Resource Element, RE) it is unit, a RE needs to occupy certain bandwidth（The bandwidth is typically a subcarrier）With the period.For OFDM (Orthogonal Frequency Division Multiplexing, OFDM) communication system, multiple RE on the same period may make up an OFDM symbol；Similarly for SC-FDMA (Single Carrier Frequency Division Multiple Access, single-carrier frequency division multiple access) communication system, multiple RE on the same period may make up a SC-FDM symbol.Multiple OFDM symbols or SC-FDM symbols may make up a subframe（Sub-Frame ) .Fig. 1 is a kind of schematic diagram of typical subframe.In Fig. 1, transverse axis represents time-domain, and the longitudinal axis then represents frequency domain, and each grid represents a RE.The subframe includes 14 SC-FDM symbols, and these SC-FDM symbols are represented with Al, A2 A14 respectively, wherein each SC-FDM symbols include 12 RE, all RE occupy period and the bandwidth of formed objects.Communication system can realize the transmission of information using these RE.
The information of wireless communication system transmission can be divided into data（) and reference information Data（Reference Signal, RS ) .Data are practical information of the transmitting terminal actual transmissions to receiving terminal, and reference information is then the information that transmitting terminal and receiving terminal are both known about, for carrying out channel estimation.Because reference signal can not carry useful information, the redundancy of system is which increased（Overhead), the efficiency of system is reduced, so the density of reference signal can not be too high；But it is due to that wireless channel is all continually changing on time-domain and frequency-domain, under certain conditions, the change of channel may quite acutely, if so reference signal density is too low, the accuracy of receiving terminal channel estimation can be affected, so as to influence the accuracy that data are demodulated.Therefore, prior art makes receiving terminal obtain the channel estimation of reference signal position, and obtain the channel estimation results in whole time domain or frequency domain using interpolation method every certain time interval or frequency interval insertion reference signal.
At least there is problems with prior art：It is lower away from the channel estimation accuracy on the remote position of reference signal no matter in time domain or frequency domain for receiving terminal, cause receiving terminal relatively low in the degree of accuracy for obtaining data away from demodulation on reference signal position；If reducing data order of modulation simply to improve the modulation /demodulation degree of accuracy, data transmission efficiency can be caused low.
The content of the invention
The embodiment of the present invention provides a kind of method for transmitting signals, transmitting terminal and receiving terminal, to take into account the modulation /demodulation accuracy of data transmission efficiency and data.
The embodiment of the present invention provides a kind of method for transmitting signals, including：
Data are modulated using high-order modulating on the time of reference signal or frequency location, data are modulated using low-order-modulated mode on the time away from reference signal or frequency location；Send the data after the reference signal and modulation.The embodiment of the present invention also provides a kind of method for transmitting signals, including：
Reference signal and data that receiving end/sending end is sent；
Use high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and use low order demodulation mode to be demodulated to data with the data after being demodulated on the time away from reference signal or frequency location.
The embodiment of the present invention also provides a kind of transmitting terminal, including：
Data, for being modulated on the time of reference signal or frequency location using high-order modulating to data, are modulated by modulating unit on the time away from reference signal or frequency location using low-order-modulated mode；
Transmitting element, for sending the data after the reference signal and modulation.
The embodiment of the present invention also provides a kind of receiving terminal, including：
Receiving unit, the reference signal and data sent for receiving end/sending end；
Demodulating unit, for using high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and on the time away from reference signal or frequency location
Low order demodulation mode is used to be demodulated to data with the data after being demodulated.
From such scheme, the embodiment of the present invention is being modulated to data using high-order modulating on the time of reference signal or frequency location, demodulated, to improve data transmission efficiency；Data are modulated using low-order-modulated mode on the time away from reference signal or frequency location, demodulated, antijamming capability can be improved, increase data modulation, the accuracy of demodulation, so as to take into account the accuracy of the modulation /demodulation of data transmission efficiency and data.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of typical subframe；
Fig. 2 is a kind of schematic diagram of method for transmitting signals provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another method for transmitting signals provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of typical reference signal design rule；
Fig. 5 is the schematic diagram of another method for transmitting signals provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that a kind of data modem mode provided in an embodiment of the present invention is distributed in time domain；
Fig. 7 is the schematic diagram that a kind of data modem mode provided in an embodiment of the present invention is distributed in time domain and frequency domain；
Fig. 8 is a kind of schematic diagram of transmitting terminal provided in an embodiment of the present invention；
Fig. 9 is a kind of schematic diagram of receiving terminal provided in an embodiment of the present invention；
Figure 10 is a kind of modulation system allocative decision provided in an embodiment of the present invention under Normal CP patterns；
Figure 11 is a kind of modulation system allocative decision provided in an embodiment of the present invention under Extended CP patterns.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described in detail.It should be noted that with
Lower embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment of the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Fig. 2 is a kind of schematic diagram of method for transmitting signals provided in an embodiment of the present invention, and the method for transmitting signals includes：
S21 :Data are modulated using high-order modulating on the time of reference signal or frequency location, data are modulated using low-order-modulated mode on the time away from reference signal or frequency location；
S22:Send the data after the reference signal and modulation.
The embodiment of the present invention is modulated on the time of reference signal or frequency location using high-order modulating to data, to improve data transmission efficiency；Data are modulated using low-order-modulated mode on the time away from reference signal or frequency location, antijamming capability can be improved, increase the correctness of data modulation, so as to overcome to a certain extent by the larger caused data transmission error of channel estimation errors.Specifically, away from reference signal time or the time or frequency location of frequency location and close reference signal is which type of position can be determined by those skilled in the art according to actual conditions in time domain or frequency domain actually.In embodiments of the present invention, a position away from reference signal distance it is remote, be closely relative concept；Equally, the high and low of the order of modulation is also relative concept.As long as a certain position A than another location B distance references signal closer to, in position, A can use the order of modulation higher than position B, with the coordination data efficiency of transmission between diverse location and modulation accuracy, so as to take into account the modulation accuracy of data transmission efficiency and data, good data transfer effect can reach.In the present embodiment, the modulation system of use includes but is not limited to QPSK (Quadrature Phase Shift Keying, QPSK）Modulation, 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation）, 64QAM modulation etc. modulation system.For the various modulation systems of data, the more high then corresponding data transmission efficiency of exponent number of modulation is higher, but antijamming capability can be reduced；Conversely, the exponent number of modulation is lower, corresponding data transmission efficiency is lower, but antijamming capability is higher.
Further, it is described close to reference signal time or frequency location on using high-order modulating data are modulated including：Data are modulated using high-order modulating on the resource unit of reference signal over time or over frequency；Correspondingly, it is described away from reference signal time or frequency location on using low-order-modulated mode data are modulated including：Data are modulated using low-order-modulated mode on the resource unit away from reference signal over time or over frequency.
Because practical communication system may be in units of resource unit, some resource units are used in transmission of reference signals, and other resource units are used in transmission data, data transmission efficiency can increased using high-order modulating on the resource unit of reference signal, and antijamming capability can be increased using low-order-modulated mode on the resource unit away from reference signal, improve modulation accuracy.
Further, the present embodiment may also include：The modulation system used is notified to receiving terminal.Fig. 3 is the schematic diagram of another method for transmitting signals provided in an embodiment of the present invention, and the method for transmitting signals includes：
S31 :Reference signal and data that receiving end/sending end is sent；
S32:Use high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and use low order demodulation mode to be demodulated to data with the data after being demodulated on the time away from reference signal or frequency location.
The present embodiment is demodulated on the time of reference signal or frequency location using high-order modulating to data, to improve data transmission efficiency；Data are demodulated using low-order-modulated mode on the time away from reference signal or frequency location, demodulation accuracy can be improved, so as to overcome to a certain extent by the larger caused data transmission error of channel estimation errors.This method can take into account the demodulation accuracy of data transmission efficiency and data.
Further, it is described close to reference signal time or frequency location on using high-order demodulation mode data are demodulated including：Data are demodulated using high-order demodulation mode on the resource unit of reference signal over time or over frequency；Correspondingly, it is described away from reference signal time or frequency location on using low order demodulation mode data are demodulated including：Resource unit away from reference signal over time or over frequency
Upper use low order demodulation mode is demodulated to data.
Further, methods described may also include：Obtained from transmitting terminal and be demodulated required demodulation mode.For ease of understanding the present invention, now reference signal design rule is briefly described.Fig. 4 is a kind of schematic diagram of typical reference signal design rule.In Fig. 4, resource unit（RE) represented with grid, transverse axis represents the time, the longitudinal axis then represents frequency, and Fig. 4 includes the resource unit for transmission of reference signals（Represented in figure with black box）With the resource unit for transmitting data（Represented in figure with white boxes；), there is certain time interval T in time domain between the resource unit for transmission of reference signals, there is certain frequency interval F on frequency domain.It can be seen that, include 14 SC-FDM symbols or OFDM symbol in Fig. 4 in time domain altogether.
Fig. 5 is the schematic diagram of another method for transmitting signals provided in an embodiment of the present invention, and the method for transmitting signals includes：
S51 :Transmitting terminal notifies the data modulation used to receiving terminal.
It is appreciated that process S51 can be performed in data dispatch or data transmission procedure, the order of the present embodiment is not used in the restriction present invention.It is appreciated that, this process of S51 nor perform necessary during signal transmission every time, that is, transmitting terminal need not be before transmission signal every time by modulation system notice receiving terminal, receiving terminal can all use the modulation system after the modulation system is known in subsequent multiple signal transmission.The data modulation can just be set in advance.In one kind in the specific implementation, could dictate that a modulation coding mode（Modulation Coding Scheme) table so that transmitting terminal and receiving terminal carry out data modulation using the modulation system in table.
In a kind of concrete application, if transmitting terminal or receiving terminal are under high motion scenes, high speed, high carrier frequency will cause high-doppler frequency deviation, and this scene hereafter is referred to as into high-doppler frequency deviation scene.Under high-doppler frequency deviation scene, the change of channel may very acutely, and system is very big to the channel estimation bias on part resource unit, and the data modulation on respective resources unit, demodulation performance decline obvious.Now, it can increase in modulation coding mode table or replace some specific modulation coding modes to adapt to the modulation demand of the data under special scenes.These increases or the modulation coding mode replaced aim at high-doppler frequency deviation Scenario Design,
That is, the modulation coding mode table used under high-doppler frequency deviation scene can be referred to as high-doppler frequency deviation meter by the modulation coding mode table that transmitting terminal is used with receiving terminal under high-doppler frequency deviation scene different from common scenarios.For different high-doppler frequency deviation scenes, transmitting terminal and receiving terminal can possess multiple different high-doppler frequency deviation meters.After application scenarios change, if transmitting terminal needs to convert modulation system, need to notify receiving terminal modulation system to change, the mode of notice includes but is not limited to following three kinds：
Mode one：Pass through PDCCH (Physical downlink control channel, Physical Downlink Control Channel）Signaling is realized.Can be by increasing configured information in schedule information, to identify specifically used modulation coding mode table.Base station only can just carry this information when the modulation coding mode table needed to use changes, and the information can also be carried in schedule information each time.
Mode two：Pass through MAC (Medium Access Control, medium education）Control (controls）IE (Information Element, information unit）Realize.When scene changes residing for transmitting terminal judges receiving terminal, receiving terminal can be notified to need to change used modulation coding mode table by MAC control IE, here a brand-new MAC control IE can be redesigned, can also be increased on the basis of original MAC control IE or father changes.
Mode three：Related modulation coding mode is carried by user data.When scene changes residing for transmitting terminal judges receiving terminal, associated modulation coding information can be carried by user data and be sent to receiving terminal, used modulation coding mode table is changed to notify receiving terminal to need, present embodiment can be increased or be changed on the basis of original user data package form, user data package is carried associated modulation coding information.
Mode four：Pass through RRC (Radio Resource Control, wireless heterogeneous networks）Signaling (signalings）Realize.When scene changes residing for transmitting terminal judges receiving terminal, receiving terminal can be notified to need to change used modulation coding mode table by RRC signaling, for example, can indicate the modulation coding mode table used by increasing IE in RRC Connection Reconfiguration (wireless resource control connection reconfiguration) message.
It is appreciated that UE can start to enable the modulation system corresponding to corresponding scene after the information that application scenarios change is known after several subframes as defined in agreement.
The change of above-mentioned modulation coding mode table and data modulation, it can apply on all component carriers, although sending the process notified to realize on some specific carrier wave, but the modulation system can be applied the changes to all component carriers in actual applications, be not limited solely to send the component carrier notified.The modulation system changing process is equally applicable to CoMP (Coordinated multi-point, coordinated multipoint transmission）Scene, when receiving terminal possesses multiple cells, as long as have wherein any one cell notify receiving terminal change modulation coding mode table, then other cells of receiving terminal can also carry out the change of corresponding modulation coding mode table.In order to ensure to be also required to the change for notifying modulation coding mode mutually between the unification between base station and terminal, the cell of coordinated multipoint transmission, specifically this process can be realized using the X2 interface or the signaling of other interfaces between cell.It is appreciated that the change of modulation system can also be determined by receiving terminal, and by receiving terminal by made change notification transmitting terminal.
Below with regard to the embodiment of the present invention to LTE (Long Term Evolution, Long Term Evolution）Or LTE-A (LTE-Advanced, LTE evolution）The influence of middle forward error correction coding is illustrated.By taking LTE as an example, coding transmission is that, using subframe as base unit, encoder can select certain information bit to be encoded according to the information obtained from descending control signaling first, and the information bit numbers after coding are typically more than before coding.Then code check adaptation can calculate the bit numbers that present sub-frame can be transmitted altogether, if the bit numbers that can be transmitted are more than the information bit numbers after coding, then the information after coding is all transmitted, and a part of information bit is transmitted in repetition, until the bit numbers that can transmit present sub-frame are exhausted；If the bit numbers that can be transmitted are less than the information bit numbers after coding, a part is intercepted from the information bit after coding, the bit numbers that present sub-frame is transmitted can be just finished by enabling this partial information of interception.For the embodiment of the present invention, the calculation for the information bit numbers that each subframe can be transmitted understands some changes, the RE that can transmit information can be classified according to different modulating mode, the bit numbers that present sub-frame can be transmitted altogether are then calculated according to the modulation system used on each RE.For example, after statistics, it is found that a RE is modulated using QPSK（Each RE can pass 2bit),2Individual 1 ￡ is modulated using 16QAM（Each RE can pass 4bit),3Individual RE is modulated using 64QAM（Each RE can pass 6bit), then the bit numbers that present sub-frame can be transmitted altogether are 2+4n2 + 6n3。
It will be understood by those skilled in the art that transmitting terminal and receiving terminal can need not safeguard multiple modulation coding mode tables, both sides can directly pass through the change of signaled other side's data modulation.In one implementation, transmitting terminal can notify receiving terminal modulation coding mode to be taken in down control channel.Illustrated by taking cellular communications system as an example, UE (User Equipment, user equipment）The corresponding coded system of base station can be known by system message, base station can know UE coded system by UE abilities etc..
S52:Transmitting terminal is modulated on the resource unit of reference signal using high-order modulating to data over time or over frequency, and data are modulated using low-order-modulated mode on the resource unit away from reference signal over time or over frequency.
S53:Data after the reference signal and modulation are sent to the receiving terminal by the transmitting terminal. S54:Receiving terminal is demodulated on the resource unit of reference signal using high-order demodulation mode to the data after modulation over time or over frequency, and the data after modulation are demodulated using low order demodulation mode on the resource unit away from reference signal over time or over frequency, the data after being demodulated.
Fig. 6 is the schematic diagram that a kind of data modem mode provided in an embodiment of the present invention is distributed in time domain.Each grid represents a resource unit in Fig. 6, and figure includes 14 OFDM symbols in terms of time-domain, is represented with al, a2 al4.Each OFDM symbol includes 12 resource units on frequency domain, and wherein OFDM symbol a2 and alO is used for transmission of reference signals, and other OFDM symbols are used to transmit data.And the OFDM symbol of 7 transmission data is spaced between the OFDM symbol of transmission of reference signals, i.e. a3 to a9.Because a3 and a9 are closer to the distance away from reference signal, the channel estimation of these positions is more accurate, to ensure data transmission efficiency, therefore can use high-order modulating, such as 64QAM modulation systems；Conversely, a6 is distant away from reference signal, precision of channel estimation is poor, to improve anti-interference, it is ensured that data transfer accuracy, should use low-order-modulated mode, such as QPSK modulation systems.Reference signal is sent in this Fig. 6 in units of OFDM symbol, it is possible to understand that actual reference signal design can be very flexible, it is for instance possible to use the design rule shown in Fig. 4.But no matter how reference signal design rule does not affect the implementation of the present embodiment.
It is appreciated that above-mentioned not only include the distance in time domain away from reference signal distance, or frequency
Distance on domain.The data modulation of higher order can be used in frequency or position near away from reference signal on the time.Fig. 7 is the schematic diagram that a kind of data modem mode provided in an embodiment of the present invention is distributed in time domain and frequency domain.The grid of each in figure is a resource unit, and one of resource unit is used for transmission of reference signals, in the resource unit with reference signal close proximity（In figure by taking the resource unit nearest away from reference signal as an example）On can use 64QAM modulation systems；At a distance of slightly remote resource unit（It is the resource unit with one resource unit in reference signal interval in figure）Using 16QAM modulation systems；At a distance of farther resource unit（It is the resource unit with 2 resource units in reference signal interval in figure）Using QPSK modulation systems.It is appreciated that according to away from reference signal distance, from the near to the remote, the order of modulation that resource unit is used can increase successively.Certainly specific data order of modulation needs determine that those skilled in the art can determine the modulation system for needing to use by basic simulation calculation according to the actual requirements according to the difference of practical application scene.
Fig. 8 is a kind of schematic diagram of transmitting terminal provided in an embodiment of the present invention, and the transmitting terminal includes：Data, for being modulated on the time of reference signal or frequency location using high-order modulating to data, are modulated by modulating unit 81 on the time away from reference signal or frequency location using low-order-modulated mode；
Transmitting element 82, for sending the data after the reference signal and modulation.
The transmitting terminal pair of the present embodiment position different from the distance of reference signal is modulated using the modulation system of different rank, can take into account the accuracy of the modulation of data transmission efficiency and data.
Further, the transmitting terminal may also include：Notification unit, for the modulation system used to be notified to receiving terminal.
Fig. 9 is a kind of schematic diagram of receiving terminal provided in an embodiment of the present invention, and the receiving terminal includes：Receiving unit 91, the reference signal and data sent for receiving end/sending end；
Demodulating unit 92, for using high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and low order demodulation mode is used to be demodulated to data with the data after being demodulated on the time away from reference signal or frequency location.
The receiving terminal pair of the present embodiment position different from the distance of reference signal uses the demodulation of different rank
Mode is demodulated, and can take into account the accuracy of the demodulation of data transmission efficiency and data.
Further, methods described may also include：Acquiring unit, required demodulation mode is demodulated for being obtained from transmitting terminal.
Transmitting terminal in the various embodiments described above can be applied to various wireless communication fields with receiving terminal, the LTE that is particularly suitable for use in (Long Term Evolution, Long Term Evolution）System and LTE-A (LTE-Advanced, LTE evolution）System.For lte-a system, the transmitting terminal can include but is not limited to the equipment such as base station, terminal with receiving terminal.
The LTE system it should be noted that method and transmitting terminal, receiving device described in the embodiment of the present invention are particularly suitable for use in.Illustrated below by taking the uplink signal transmissions in LTE system as an example, Figure 10 is provided in an embodiment of the present invention in Normal CP (Normal Cyclic Prefix, general cyclic prefix）A kind of modulation system allocative decision under pattern.Under Normal CP patterns, each sub-frame of uplink can include 14 SC-FDM symbols.It can be seen that, on time-axis direction, the 4th in sub-frame of uplink, 11 SC-FDM symbols be used for transmission of reference signals, 2nd, 3,5,6,9,10,12,13 SC-FDM symbolic distance reference signals are closely located to, using the 16QAM modulation systems of relative high-order, and the 1st, 7,8,14 SC-FDM symbolic distance reference signals positions it is remote, channel estimation accuracy is poor, using relative low order
Prefix, extended cyclic prefix）A kind of modulation system allocative decision under pattern.Under Extended CP patterns, each sub-frame of uplink includes 12 SC-FDM symbols, now on time-axis direction, the 3rd in sub-frame of uplink, 9 SC-FDM symbols be used for transmission of reference signals, 1st, 2,4,5,7,8,10,11 SC-FDM symbolic distance reference signals are closely located to, using the 16QAM modulation systems of relative high-order, and the 6th, 12 SC-FDM symbolic distance reference signals positions are remote, channel estimation accuracy is poor, using the QPSK modulation systems of relative low order.
It should be noted that in embodiments of the present invention, a position is away from the remote, near of reference signal distance, or the high and low of order of modulation is all relative concept.Those skilled in the art may decide which kind of uses on the diverse location of time domain or frequency domain according to this specification embodiment disclosure with reference to concrete application demand
Modulation system.For example in Fig. 10, each sub-frame of uplink, using 16QAM modulation on away from 2 nearest SC-FDM symbols of reference signal, can be modulated comprising 14 SC-FDM symbols on remaining SC-FDM symbol using QPSK in.If it is assumed that each sub-frame of uplink can include N number of SC-FDM symbols, reference signal is located on the 1st and n-th SC-FDM symbols, then can be in 1, the 2 M (Ms nearest away from reference signal<0.5 (N -2)) on individual SC-FDM symbols using 16QAM modulation, modulated on remaining SC-FDM symbol using QPSK.How far distance of the specific modulation system and SC-FDM symbols away from reference signal be without of the invention in limiting.As long as some SC-FDM symbols A than another SC-FDM symbols B away from reference signal closer to, to SC-FDM symbols A can use than another SC-FDM symbol B higher order modulation system.Because SC-FDM symbols A is relative closer to channel estimation errors are relatively shorter than SC-FDM symbol B, and relatively higher order of modulation can be used to improve data transmission efficiency away from reference signal；SC-FDM symbols B channel estimation errors are bigger relative to SC-FDM symbols A, can use relatively lower order of modulation to improve modulation, demodulation accuracy.Purpose of the embodiment of the present invention is to trade off considerations to data transmission efficiency and modulation accuracy, with the coordination data efficiency of transmission on different time or frequency location and modulates accuracy relation between the two.For different concrete application scenes and modulation system setting rule, the beneficial effect that this method reaches there may be difference, but as long as not departing from the spirit and essence of the present invention, as long as determining the modulation system that diverse location is used according to the distance with reference signal, the beneficial effect of coordination data efficiency of transmission and modulation accuracy relation between the two can be just played, data transmission efficiency and the modulation accuracy relatively in more distant positions in relative closer proximity is improved.
One of ordinary skill in the art will appreciate that all or part of flow in above method embodiment, computer program is can be by instruct related hardware completion, described program can be stored in a computer read/write memory medium, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, CD, read-only memory（Read-Only Memory, ROM) or deposit oneself at random and recall body (Random Access Memory, RAM) etc..
Described above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, and under the premise without departing from the principles of the invention, above-described embodiment can also make some change
Enter and modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (10)
- Claims1st, a kind of method for transmitting signals, it is characterised in that including：Data are modulated using high-order modulating on the time of reference signal or frequency location, data are modulated using low-order-modulated mode on the time away from reference signal or frequency location；Send the data after the reference signal and modulation.2nd, according to the method described in claim 1, it is characterised in that it is described close to reference signal time or frequency location on using high-order modulating data are modulated including：Data are modulated using high-order modulating on the resource unit of reference signal over time or over frequency；Correspondingly, it is described away from reference signal time or frequency location on using low-order-modulated mode data are modulated including：Data are modulated using low-order-modulated mode on the resource unit away from reference signal over time or over frequency.3rd, method according to claim 1 or 2, it is characterised in that also include：The modulation system used is notified to receiving terminal.4th, a kind of method for transmitting signals, it is characterised in that including：Reference signal and data that receiving end/sending end is sent；Use high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and use low order demodulation mode to be demodulated to data with the data after being demodulated on the time away from reference signal or frequency location.5th, method according to claim 4, it is characterised in that it is described close to reference signal time or frequency location on using high-order demodulation mode data are demodulated including：Data are demodulated using high-order demodulation mode on the resource unit of reference signal over time or over frequency；Correspondingly, it is described away from reference signal time or frequency location on using low order demodulation mode data are demodulated including：Data are demodulated using low order demodulation mode on the resource unit away from reference signal over time or over frequency.6th, the method according to claim 4 or 5, it is characterised in that also include： Obtained from transmitting terminal and be demodulated required demodulation mode.7th, a kind of transmitting terminal, it is characterised in that including：Data, for being modulated on the time of reference signal or frequency location using high-order modulating to data, are modulated by modulating unit on the time away from reference signal or frequency location using low-order-modulated mode；Transmitting element, for sending the data after the reference signal and modulation.8th, transmitting terminal according to claim 7, it is characterised in that also include：Notification unit, for the modulation system used to be notified to receiving terminal.9th, a kind of receiving terminal, it is characterised in that including：Receiving unit, the reference signal and data sent for receiving end/sending end；Demodulating unit, for using high-order demodulation mode to be demodulated to data with the data after being demodulated on the time of reference signal or frequency location, and low order demodulation mode is used to be demodulated to data with the data after being demodulated on the time away from reference signal or frequency location.10th, receiving terminal according to claim 9, it is characterised in that also include：Acquiring unit, required demodulation mode is demodulated for being obtained from transmitting terminal.
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|---|---|---|---|---|
| CN1340262A (en) * | 1999-02-09 | 2002-03-13 | 朗迅科技公司 | Termination of coded or uncoded modulation with path-oriented decoder |
| CN1771680A (en) * | 2003-04-08 | 2006-05-10 | 摩托罗拉公司 | Method and apparatus for transmission and reception of data |
-
2009
- 2009-09-24 WO PCT/CN2009/074196 patent/WO2011035472A1/en active Application Filing
- 2009-09-24 CN CN2009801464570A patent/CN102227896A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340262A (en) * | 1999-02-09 | 2002-03-13 | 朗迅科技公司 | Termination of coded or uncoded modulation with path-oriented decoder |
| CN1771680A (en) * | 2003-04-08 | 2006-05-10 | 摩托罗拉公司 | Method and apparatus for transmission and reception of data |
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| WO2011035472A1 (en) | 2011-03-31 |
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