CN106301718B - A kind of constellation point method and apparatus of multi-user's superposition - Google Patents
A kind of constellation point method and apparatus of multi-user's superposition Download PDFInfo
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- CN106301718B CN106301718B CN201510246238.7A CN201510246238A CN106301718B CN 106301718 B CN106301718 B CN 106301718B CN 201510246238 A CN201510246238 A CN 201510246238A CN 106301718 B CN106301718 B CN 106301718B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
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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
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3444—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power by applying a certain rotation to regular constellations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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Abstract
The invention discloses a kind of constellation point method and apparatus of multi-user superposition.Base station sends the first wireless signal and second wireless singal in step 1.Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal are overlapped in whole or in part.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system is xQAM, and the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is the yQAM rotation obtained planisphere of first angle, and first angle is greater than 0 less than 90 degree, and the y is 4 positive integer power.The present invention increases the minimum ED for the wireless signal of remote user and then reduces BER under the premise of not changing the transmission power for remote user.
Description
Technical field
The present invention relates to the transmission plans in wireless communication system, are superimposed more particularly to multi-user
(Superposition) method and apparatus of constellation point.
Background technique
Traditional 3GPP (3rd Generation Partner Project, third generation cooperative partner program) cellular system
In, the downstream wireless signals of multi-user are by { TDM (Time Division Multiplexing, time division multiplexing), FDM
(Frequency Division Multiplexing, frequency division multiplexing), CDM (Code Division Multiplexing, code
Point multiplexing) } one or more of mode realize.A new research is introduced in 3GPP R (Release, version) 13
Project (RP-150496)-descending multi-user superposition, that is, utilize the downlink wireless communication for two users of different instructions for sending power
Number.Described two users generally include nearly user's (i.e. close apart from base station) and remote user's (i.e. remote apart from base station), base
It stands to distribute higher transmission power for the first signal of remote user, while being lower for the distribution of the second signal of nearly user
Transmission power.Remote user directly demodulates the first signal (second signal work as noise processed), and closely user demodulates the first
One signal (a possibility that user has lower path loss, successfully decoded farther out in view of nearly user is very high), then from connecing
The interference that the first signal is removed in the collection of letters number obtains residual signal, decodes to residual signal and obtains second signal, here it is SIC
(Successive Interference Cancellation, successive interference cancellation) algorithm.In order to execute SIC, nearly user is needed
Obtain the scheduling information-of the first signal and the second signal and remote user only may need to obtain the scheduling information of the first signal.
It should be noted that the specific implementation of above-mentioned SIC algorithm is by UE (User Equipment, user equipment) factory
Quotient voluntarily determines.And perhaps the nearly UE of additional project (or remote UE) can use IRC to the substitution as a kind of SIC
(Interference Rejection Combining, AF panel merge) algorithm carries out albefaction behaviour to the wireless signal of superposition
Make, to improve receptivity.IRC algorithm does not require UE correct decoding to interfere wireless signal, it is only necessary to estimation interference wireless signal
Channel parameter.
For multi-user be superimposed, one need the problem of inquiring into be how for be overlapped mutually two wireless signals selection close
Suitable modulation system, such as 3GPP manuscript R1-151425 and R1-151848 are described possible solution respectively.It is existing
Solution is that the modulation system-QAM, 16QAM, 64QAM etc. of selection criteria are distinguished for two wireless signals being overlapped mutually.
Summary of the invention
Inventors discovered through research that the transmission power for the wireless signal being overlapped mutually is unfixed.Further, above-mentioned
The modulation system of standard cannot maximize between the constellation point (Constellation) of the second signal most after superimposing
Small ED (Eucl idean Distance, theorem in Euclid space away from).And it is well known that minimum theorem in Euclid space is away from smaller, BER (Bit
Error Rate, bit error rate) it is higher.
In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen
The feature in the embodiment and embodiment in UE please can be applied in base station, and vice versa.Further, do not conflicting
In the case of, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
The invention discloses a kind of methods in base station for supporting multi-user to be superimposed, wherein includes the following steps:
Step A. sends the first wireless signal and second wireless singal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system is corresponding second planisphere (Constellation), the second star
Seat figure is the yQAM rotation obtained planisphere of first angle, and first angle is greater than 0 less than 90 degree, and the y is 4 positive integer time
Power.
It is compared with conventional method, the above method ensures the first modulation system and the corresponding minimum ED of the second modulation system
It remains unchanged, but by selecting suitable first angle to increase the signal of (the first wireless signal and second wireless singal) superposition
Corresponding minimum ED.In addition, transmission power of the phase rotation without increase second wireless singal itself, the i.e. above method are complete
Being obtained by constellation G- Design reduces BER (Bit Error Rate, bit error rate).4QAM in the present invention is usually abbreviated
At QAM or QPSK.The planisphere in the present invention refers to the pattern that constellation point is constituted, do not include constellation point and bit it
Between mapping relations.
As one embodiment, the target receiver of the first wireless signal is that (i.e. the first wireless signal is for by the first UE
It is useful signal for the high level of one UE), the target receiver of second wireless singal is the 2nd UE.As a sub- embodiment,
RNTI (Radio Network Temporary Identity, the tentative mark of wireless network of the dispatch of first wireless signal
Know) it is configured to the first UE, the RNTI of the dispatch of second wireless singal is configured to the 2nd UE.
As one embodiment, the rotation first angle is rotated clockwise centered on origin.As one
Embodiment, the rotation first angle is rotated counterclockwise centered on origin.It is wireless as one embodiment, first
The target receiver of signal is the first UE, and the target receiver of second wireless singal is the 2nd UE.As one embodiment, first
Less than 45 degree of angle (Degree).As one embodiment, the first wireless signal and second wireless singal are all in PDSCH
It is transmitted on (Physical Downl ink Shared Channel, Physical Downlink Shared Channel).As one embodiment, institute
In wireless signal modulation symbol is stated to be mapped in a RE (Resource Element, resource particle).
As one embodiment, the UE decodes second wireless singal using Viterbi algorithm according to the second planisphere.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. sends the first signaling, and the first signaling indicates at least one of { first angle, first numerical value }.
Wherein, the difference of the transmission power for sending power and second wireless singal of first the first wireless signal of numerical value
Value.
As one embodiment, the first signaling is physical layer signaling.As one embodiment, the first signaling is high-rise letter
It enables.As one embodiment, the first signaling is the dispatch of second wireless singal.As one embodiment, the transmission function
The unit of rate is dBm (milli decibel).As one embodiment, the first numerical value is EPRE (the Energy Per of the first wireless signal
Resource Element, the energy of every resource particle) subtract second wireless singal EPRE difference, the first numerical value is more than or equal to
0。
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. receives the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake
Step C. sends third wireless signal.
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block,
Third wireless signal uses third modulation system, and third modulation system is zQAM, and described is 4 positive integer power in z.
The essence of above-mentioned aspect is that the re-transmission signal of second wireless singal may use (i.e. irrotational) constellation of standard
Figure.As one embodiment, the base station only sends third wireless signal on the occupied running time-frequency resource of third wireless signal
(other wireless signals of getting along well are superimposed).As one embodiment, the dispatch of third wireless signal does not include for auxiliary
(i.e. the target UE of third wireless signal is not executed the information for helping SIC to operate on the occupied running time-frequency resource of third wireless signal
SIC operation).
As one embodiment, the second signaling is in PUCCH (Physical Upl ink Control Channel, physics
Uplink control channel) on transmit, the second signaling by second wireless singal target receiver send.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. sends downlink RS (Reference Signal, reference signal).
Wherein, the first wireless signal, second wireless singal and the downlink RS are sent by identical P antenna port, institute
Stating P is positive integer.
As one embodiment, the downlink RS is the URS in LTE (Long Term Evolution, long term evolution)
(UE-specific RS, UE specific reference signals).
Specifically, according to an aspect of the present invention, which is characterized in that the rotation is to rotate clockwise or described
Rotation is to rotate counterclockwise.Less than 45 degree, first angle reduces first angle with the increase of the first numerical value.
As one embodiment, the inverse of the corresponding linear value of the first numerical value of quadratic sum of the sine function of first angle
At linear dependence, the corresponding slope of the linear dependence is related with the x and the y.As a sub- embodiment, the x
It is 4, the y is 16, and the slope of the linear dependence is 9/16.As a sub- embodiment, the x is 16, and the y is 4, institute
The slope for stating linear dependence is 1/9.As a sub- embodiment, the x is equal to the y, the sine function of first angle
Square be equal to the corresponding linear value of the first numerical value inverse multiplied by 1/4.
The invention discloses a kind of methods in UE for supporting multi-user to be superimposed, wherein includes the following steps:
Step A. receives the first wireless signal and second wireless singal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.
As one embodiment, the UE decodes the first nothing according to the transmission power and xQAM planisphere of the first wireless signal
Line signal (does not use the planisphere of superposition) when decoding the first wireless signal.The advantages of above-described embodiment be have it is good
Backwards compatibility.
As one embodiment, described receive includes channel equalization, channel decoding.As one embodiment, the reception
(globular decoding or MMSE-IRC) is received including MIMO, channel decoding.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. receives the first signaling, and the first signaling indicates at least one of { first angle, first numerical value }.
Wherein, the difference of the transmission power for sending power and second wireless singal of first the first wireless signal of numerical value
Value.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Step B. sends the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake
Step C. receives third wireless signal.
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block,
Third wireless signal uses third modulation system, and third modulation system is zQAM, and described is 4 positive integer power in z.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. receives downlink RS.
Wherein, the first wireless signal, second wireless singal and the downlink RS are sent by identical P antenna port, institute
Stating P is positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the rotation is to rotate clockwise or described
Rotation is to rotate counterclockwise.Less than 45 degree, first angle reduces first angle with the increase of the first numerical value.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A3. decodes the first wireless signal, from the interference for eliminating the first wireless signal in signal is received, decodes second
Wireless signal.
The invention discloses a kind of methods in UE for supporting multi-user to be superimposed, wherein includes the following steps:
Step A. receives the first signaling, receives the first wireless signal, wireless using the planisphere decoding first of superposed signal
Signal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal.
As one embodiment, the UE is the remote UE in multi-user's superposition.
One embodiment of the first wireless signal is decoded as the planisphere using superposed signal, the UE is right first
It receives signal and executes channel equalization operations, Viterbi decoded operation-then is executed to soft bit and wherein gives soft bit to first
Euclid (Euclid) distance of constellation point is that given soft bit is superimposed the second star by the first constellation point into superposition planisphere
Seat figure is formed by the average value of the Euclidean distance of all constellation points, and the first constellation point is the first modulation system constellation
Any one constellation point in figure.
The invention discloses a kind of base station equipments for supporting multi-user to be superimposed, wherein including following module:
First module: for sending the first wireless signal and second wireless singal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.
The invention discloses a kind of user equipmenies for supporting multi-user to be superimposed, wherein including following module:
First module: for receiving the first wireless signal and second wireless singal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.
The invention discloses a kind of user equipmenies for supporting multi-user to be superimposed, wherein including following module:
First module: for receiving the first signaling, the first wireless signal is received, the planisphere decoding the of superposed signal is utilized
One wireless signal.
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal all or
Person partly overlaps.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system
It is xQAM, the x is 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal.
Compared to existing public technology, the present invention has following technical advantage:
- increases the minimum of the wireless signal for remote user under the premise of not changing the transmission power for remote user
ED reduces BER.Or it is equivalent, under the premise of the BER of the wireless signal for remote user is constant, reduces and be directed to nearly user
Wireless signal BER.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the transmission flow figure of descending multi-user superposition according to an embodiment of the invention；
Fig. 2 shows the superposition constellations of the first wireless signal according to an embodiment of the invention and second wireless singal
Figure；
Fig. 3 shows the superposition star of the first wireless signal and second wireless singal according to still another embodiment of the invention
Seat figure；
Fig. 4 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Fig. 5 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the transmission flow figure of descending multi-user superposition, as shown in Fig. 1.In attached drawing 1, base station N1 is
The maintenance base station of the serving cell of UE U2 and UE U3, wherein the step in box F1 is optional step.
ForBase station N1, the first signaling is sent in step s 11, and the first signaling indicates the first numerical value.It sends out in step s 12
Send the first wireless signal and second wireless singal.In step s 13, the second signaling is received, the second signaling indicates the second wireless communication
Transmission block corresponding to number is decoded by mistake.In step S14, third wireless signal is sent.
ForUE U2, the first signaling is received in the step s 21, and the first numerical value and first angle are determined according to the first signaling.
The first wireless signal and second wireless singal are received in step S22.The second signaling is sent in step S23.In step s 24
Receive third wireless signal.
ForUE U3, the first signaling is received in step S31, and the first numerical value and first angle are determined according to the first signaling.
The first wireless signal is received in step s 32.
In embodiment 1, the transmission power of the transmission power and second wireless singal of first the first wireless signal of numerical value
Difference.The occupied running time-frequency resource of first wireless signal and the occupied running time-frequency resource of second wireless singal are all or part of
Overlapping.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system is
XQAM, the x are 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation first
The obtained planisphere of angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.Second signaling is physics
Layer signaling, second wireless singal and third wireless signal correspond to the same transmission block, and third wireless signal uses third modulation methods
Formula, third modulation system are zQAM, and described is 4 positive integer power in z.
As the sub- embodiment 1 of embodiment 1, the mark RNTI of the dispatch of the first wireless signal is assigned to UE U3,
The mark RNTI of the dispatch of second wireless singal is assigned to UE U2.
As the sub- embodiment 2 of embodiment 1, the transmission function for sending power and being greater than second wireless singal of the first wireless signal
Rate, i.e. the first numerical value are greater than 0dB.
As the sub- embodiment 3 of embodiment 1, the first wireless signal and second wireless singal share identical URS antenna end
Mouthful.
As the sub- embodiment 4 of embodiment 1, the second planisphere is that yQAM rotates clockwise or rotate counterclockwise first jiao
Obtained planisphere is spent, first angle is greater than 0 less than 45 degree.
As the sub- embodiment 5 of embodiment 1, the first signaling indicates the first numerical value, and UE U2 and UE U3 are according to the first numerical value
Determine first angle (i.e. there are predefined mapping relations for the first numerical value and first angle).
Embodiment 2
Embodiment 2 illustrates the superposition planisphere of the first wireless signal and second wireless singal, as shown in Fig. 2.Attached drawing 2
In, the constellation point of the modulated signal of corresponding first wireless signal of five-pointed star, four realities being centered around around a given five-pointed star
Heart dot is the constellation point in the second planisphere, and the origin of the second planisphere is the given five-pointed star, the I axis of the second planisphere
It is consistent respectively with Q axis direction with the I axis and Q axis direction of the superposition planisphere.
In embodiment 2, the modulation system of the first wireless signal is 4QAM, and the second planisphere is that the corresponding planisphere of 4QAM is inverse
Hour hands rotate first angle.The mould (absolute value of amplitude) of first wireless signal is a (linear value), and the mould of second wireless singal is
1 (linear value), the sine function of first angle square be equal to the corresponding linear value of the first numerical value inverse multiplied by 1/4, i.e.,
The sine function of first angle is equal to 1/2, i.e. θ=0.5 asin multiplied by the square root of the corresponding linear value of the first numerical value.Its
Middle θ is first angle, and the first numerical value is square corresponding decibel value of a.
The above-mentioned relation of first angle and the first numerical value maximizes in the minimum ED-i.e. attached drawing 2 in superimposed planisphere
The distance between two constellation points of double arrowed line d1 connection be equal between two constellation points of double arrowed line d2 connection away from
From.
Embodiment 3
Embodiment 3 illustrates the superposition planisphere of another first wireless signal and second wireless singal, such as 3 institute of attached drawing
Show.In attached drawing 3, the constellation point of the modulated signal of corresponding first wireless signal of five-pointed star is centered around around a given five-pointed star
16 black circles form the second planisphere, the origin of the second planisphere is the given five-pointed star, the I axis of the second planisphere
It is consistent respectively with Q axis direction with the I axis and Q axis direction of the superposition planisphere.
In embodiment 3, the modulation system of the first wireless signal is 4QAM, and the second planisphere is the corresponding planisphere of 16QAM
Rotate clockwise first angle.The power of first wireless signal is square (the linear value) of a, the mean power of second wireless singal
For 1 (linear value), the sine function of first angle square is equal to the reciprocal multiplied by 9/16 of the corresponding linear value of the first numerical value,
I.e. the sine function of first angle multiplied by the corresponding linear value of the first numerical value square root be equal to 0.75, i.e. asin θ=
0.75.Wherein θ is first angle, and the first numerical value is square corresponding decibel value of a.
The above-mentioned relation of first angle and the first numerical value maximizes in the minimum ED-i.e. attached drawing 3 in superimposed planisphere
The distance between two constellation points of double arrowed line d1 connection be equal between two constellation points of double arrowed line d2 connection away from
From.
Embodiment 4
Embodiment 4 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 4.In attached drawing 4, base station
Processing unit 300 is mainly made of sending module 301, receiving module 302 and sending module 303, is wherein identified in dotted line frame
Receiving module 302 and sending module 303 are optional.
Sending module 301 is for sending the first wireless signal and second wireless singal and sending downlink RS.Receiving module
302 for receiving the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake.Sending module
303 for sending third wireless signal.
In embodiment 4, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal
All overlappings.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system is
XQAM, the x are 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is that yQAM revolves clockwise
Turn or the rotation obtained planisphere of first angle, first angle are greater than 0 less than 45 degree counterclockwise, the y is 4 positive integer
Power.First wireless signal, second wireless singal and the downlink RS are sent that (i.e. UE is according to institute by identical P antenna port
State the parameter of downlink RS estimation the first wireless signal and second wireless singal wireless channel experienced), the P is positive integer.
Second signaling is transmitted on PUCCH, and second wireless singal and third wireless signal correspond to the same transmission block, third wireless signal
Using third modulation system, third modulation system is zQAM, and described is 4 positive integer power in z.First angle is with the first number
The increase of value and reduce.The P antenna port is P in antenna port { 7,8,9,10,11,12,13,14 } in LTE.
As the sub- embodiment 1 of embodiment 4, the P is 1.
Embodiment 5
Embodiment 5 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 5.In attached drawing 5, UE processing
Device 400 is mainly made of receiving module 401, sending module 402 and receiving module 403, the transmission wherein identified in dotted line frame
Module 402 and receiving module 403 are optional.
Receiving module 401 is for receiving the first signaling and the first wireless signal.The instruction of first signaling first angle, first
At least one of numerical value }.
In embodiment 5, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal
All overlappings.First wireless signal uses the first modulation system, and second wirelessly uses the second modulation system.First modulation system is
XQAM, the x are 4 positive integer power.Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation first
The obtained planisphere of angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power.First numerical value
The difference of the transmission power for sending power and second wireless singal of one wireless signal.
As the sub- embodiment 1 of embodiment 5, receiving module 401 is also used to decode the first wireless signal, from reception signal
The interference for eliminating the first wireless signal receives and decodes second wireless singal.
As the sub- embodiment 2 of embodiment 5, sending module 402 indicates the second nothing for sending the second signaling, the second signaling
Transmission block corresponding to line signal is decoded by mistake.Receiving module 403 is for receiving third wireless signal.Wherein, the second signaling
It is physical layer signaling, second wireless singal and third wireless signal correspond to the same transmission block, and third wireless signal uses third
Modulation system, third modulation system are zQAM, and described is 4 positive integer power in z.
As the sub- embodiment 3 of embodiment 5, the first signaling is in PDCCH (Physical Downlink Control
Channel, Physical Downlink Control Channel) or EPDCCH (Enhanced PDCCH, the Physical Downlink Control Channel of enhancing) on
Transmission.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE or terminal in the present invention include but not
It is limited to mobile phone, tablet computer, notebook, card of surfing Internet, the wireless telecom equipments such as automobile.Base station in the present invention includes but is not limited to
Macrocell base stations, microcell base station, Home eNodeB, the wireless telecom equipments such as relay base station.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (13)
1. a kind of method in base station for supporting multi-user to be superimposed, wherein include the following steps:
Step A. sends the first wireless signal and second wireless singal；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；
Step B. receives the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Step C. sends third wireless signal；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
2. the method according to claim 1, wherein the step A further includes following steps:
Step A1. sends the first signaling, and the first signaling indicates at least one of { first angle, first numerical value }；
Wherein, the difference of the transmission power for sending power and second wireless singal of first the first wireless signal of numerical value.
3. the method according to claim 1, wherein the step A further includes following steps:
Step A2. sends downlink RS；
Wherein, the first wireless signal, second wireless singal and the downlink RS are sent by identical P antenna port, and the P is
Positive integer.
4. the method according to claim 1, wherein it is described rotation be rotate clockwise or it is described rotation be
Rotation counterclockwise；Less than 45 degree, first angle reduces first angle with the increase of the first numerical value.
5. a kind of method in UE for supporting multi-user to be superimposed, wherein include the following steps:
Step A. receives the first wireless signal and second wireless singal；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；
Step B. sends the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Step C. receives third wireless signal；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
6. according to the method described in claim 5, it is characterized in that, the step A further includes following steps:
Step A1. receives the first signaling, and the first signaling indicates at least one of { first angle, first numerical value }；
Wherein, the difference of the transmission power for sending power and second wireless singal of first the first wireless signal of numerical value.
7. according to the method described in claim 5, it is characterized in that, the step A further includes following steps:
Step A2. receives downlink RS；
Wherein, the first wireless signal, second wireless singal and the downlink RS are sent by identical P antenna port, and the P is
Positive integer.
8. according to the method described in claim 5, it is characterized in that, it is described rotation be rotate clockwise or it is described rotation be
Rotation counterclockwise；Less than 45 degree, first angle reduces first angle with the increase of the first numerical value.
9. according to the method described in claim 5, it is characterized in that, the step A further includes following steps:
Step A3. decodes the first wireless signal, and from the interference for eliminating the first wireless signal in signal is received, decoding second is wireless
Signal.
10. a kind of method in UE for supporting multi-user to be superimposed, wherein include the following steps:
Step A. receives the first signaling, receives the first wireless signal, decodes the first wireless communication using the planisphere of superposed signal
Number；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal；
Second module: sending the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Third module: third wireless signal is received；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
11. a kind of base station equipment for supporting multi-user to be superimposed, wherein including following module:
First module: for sending the first wireless signal and second wireless singal；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal；
Second module: receiving the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Third module: third wireless signal is sent；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
12. a kind of user equipment for supporting multi-user to be superimposed, wherein including following module:
First module: for receiving the first wireless signal and second wireless singal；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal；
Second module: sending the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Third module: third wireless signal is received；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
13. a kind of user equipment for supporting multi-user to be superimposed, wherein including following module:
First module: for receiving the first signaling, the first wireless signal is received, decodes the first nothing using the planisphere of superposed signal
Line signal；
Wherein, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource whole of second wireless singal or portion
Divide overlapping；First wireless signal uses the first modulation system, and second wireless singal uses the second modulation system；First modulation system
It is xQAM, the x is 4 positive integer power；Second modulation system corresponds to the second planisphere, and the second planisphere is yQAM rotation the
The obtained planisphere of one angle, first angle are greater than 0 less than 90 degree, and the y is 4 positive integer power；The instruction of first signaling
At least one of { first angle, first numerical value }, the transmission power of first the first wireless signal of numerical value and second is wirelessly
The difference of the transmission power of signal；
Second module: sending the second signaling, and the second signaling indicates that transmission block corresponding to second wireless singal is decoded by mistake；
Third module: third wireless signal is received；
Wherein, the second signaling is physical layer signaling, and second wireless singal and third wireless signal correspond to the same transmission block, third
Wireless signal uses third modulation system, and third modulation system is zQAM, and the z is 4 positive integer power.
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| CN109274458A (en) * | 2017-07-17 | 2019-01-25 | 深圳市中兴微电子技术有限公司 | A kind of method and device for realizing decoding processing |
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