CN106209329B - A kind of transmission method and device of descending multi-user superposition - Google Patents
A kind of transmission method and device of descending multi-user superposition Download PDFInfo
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- CN106209329B CN106209329B CN201510214584.7A CN201510214584A CN106209329B CN 106209329 B CN106209329 B CN 106209329B CN 201510214584 A CN201510214584 A CN 201510214584A CN 106209329 B CN106209329 B CN 106209329B
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Abstract
The invention discloses the transmission methods and device of a kind of superposition of descending multi-user.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 includes the first modulation symbol of positive integer, and second wireless singal includes the second modulation symbol of positive integer.For first modulation symbol multiplied by being mapped on L resource units after characteristic sequence, the length of the characteristic sequence is L, and the second modulation symbol occupies 1 resource units.The present invention can inhibit the wireless signal for nearly UE to interference brought by remote UE, and ambient noise and the downlink signal of other cells is inhibited to interfere brought by remote UE.
Description
Technical field
The present invention relates to the transmission plans in wireless communication system, more particularly to based on long term evolution (LTE-Long
Term Evolution) for multi-user be superimposed (Superposition) control signaling method and apparatus.
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 lower transmission power for the first signal of nearly user, while being higher for the distribution of the second signal of remote user
Transmission power.Remote user directly demodulates second signal (the first signal work as noise processed), and closely user demodulates the first
Binary 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 influence that second signal is removed in the collection of letters number obtains residual signal, decodes to residual signal and obtains the first signal, here it is SIC
(Successive Interference Cancellation, successive interference cancellation) algorithm.
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.
Compared to traditional transmission mode, the first signal in multi-user's superposition additionally receives the interference of second signal.Cause
How this, ensure remote UE to the challenge that the reception robustness of the first signal is in multi-user transmission.
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.
Summary of the invention
First signal is by two kinds of interference: the interference of second signal and other interference.Other described interference packets
Include inter-cell interference, ambient noise etc..Inventors discovered through research that the ratio of the power of the interference of described two types can
Can change in a larger range.For example, the interference of second signal may be interfered much larger than other, or on the contrary,
The interference of second signal may be much smaller than other interference.Therefore, multi-user's overlaying scheme can should inhibit simultaneously both types
Interference.
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 includes the first modulation symbol of positive integer, and second wireless singal includes positive integer second
Modulation symbol.Multiplied by being mapped on L resource units after characteristic sequence, the length of the characteristic sequence is first modulation symbol
L, the second modulation symbol occupy 1 resource units, and the L is positive integer.
The essence of the above method is: included modulation symbol passes through OCC (Othogonal in the first wireless signal
Covering Code, orthogonal covering codes) it is mapped on multiple resource units, and modulation symbol included by second wireless singal
It then maps directly on 1 resource units.The above method can effectively inhibit the interference of described two types to the first wireless signal
Interference.
And if the second modulation symbol (as the first modulation symbol) is mapped on L resource units using OCC, the
Two wireless signals cannot be suppressed the interference of the first wireless signal.
As one embodiment, the L is 2 positive integer power.
As one embodiment, the target receiver of the first wireless signal is the first UE, and the target of second wireless singal connects
Receipts person is the 2nd UE.
As one embodiment, the target receiver of given wireless signal refers to the letter of the dispatch of given wireless signal
The terminal for enabling mark corresponding.As a sub- embodiment, the signaling mark is RNTI (Radio Network
Temporary Identity, the tentative mark of wireless network), the signaling mark is used for the CRC (Cyclic of the dispatch
Redundancy Check, cyclic redundancy check) scrambling code.
As one embodiment, the characteristic sequence is Zad-off Chu sequence.As one embodiment, the feature
Sequence is Walsh code.
As one embodiment, the occupied running time-frequency resource of the first wireless signal and the occupied time-frequency of second wireless singal
Resource is all overlapped.
As one embodiment, the first wireless signal includes whole portions of a TB (Transport Block, transmission block)
Divide information bit, second wireless singal includes all or part of information bit of a TB.
The resource units include continuous bandwidth on frequency domain, in the time domain include continuous time period.Implement as one
, the resource units in the L resource units include at least two kinds of frequency domain bandwidths.As one embodiment, the resource list
Position is a RE (Resource Element, resource particle).
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A1:
Step A1. sends the first signaling, and the first signaling indicates at least one of { L, first numerical value }.
Wherein, the first signaling is high-level signaling either physical layer signaling, the hair of first the first wireless signal of numerical value
Send the difference of the transmission power of power and second wireless singal.
As one embodiment, the unit for sending power is dBm (milli decibel).As one embodiment, the first letter
Order is the dispatch of second wireless singal.As one embodiment, the first numerical value is the EPRE (Energy of the first wireless signal
Per Resource Element, the energy of every resource particle) subtract second wireless singal EPRE difference, the first numerical value is greater than
Equal to 0.As one embodiment, the high-level signaling is RRC (Radio Resource Control, wireless heterogeneous networks) layer
Signaling.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A2:
Step A2. determines the L according to the corresponding bit number of the second modulation symbol.
As one embodiment, the second modulation symbol is generated by k bit modulation, the k power that the L is 2.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A3:
Step A3. sends third wireless signal.
Wherein, third wireless signal includes positive integer third modulation symbol, and third modulation symbol is the short of M multiplied by length
It is mapped to after sequence on M resource units, the M is less than the positive integer of the L.Third wireless signal and the first wireless communication
Number corresponding same group of transmission block.
As one embodiment, the same group of transmission block includes 1 transmission block.It is described same as one embodiment
Group transmission block includes positive integer transmission block.
As one embodiment, third wireless signal and the first wireless signal are by sharing identical dispatch.
As one embodiment, third wireless signal only includes 1 third modulation symbol.As one embodiment, the M
It is the resource units in the running time-frequency resource removed in target running time-frequency resource except the occupied resource units of the first wireless signal
Quantity, the target running time-frequency resource are running time-frequency resources scheduled in the same dispatch.
As one embodiment, the short sequence is ZC sequence or Walsh code.
As one embodiment, M third modulation symbol and M second modulation are contained in the M resource units
Symbol.
As one embodiment, the M is 1, and the short sequence is 1.
Above-mentioned aspect ensures that the target running time-frequency resource is fully occupied, even if when included in the target running time-frequency resource
The quantity of resource units when not being the integral multiple of L.Above-mentioned aspect avoids the wasting of resources.
Specifically, according to an aspect of the present invention, which is characterized in that the L resource units contain L1 first
Modulation symbol and L the second modulation symbols, the L1 is positive integer.
As one embodiment, the L1 is no more than the positive integer of L, and the L1 the first modulation symbols are respectively corresponding
The characteristic sequence be pairwise orthogonal.
As one embodiment, the mapping of at least one the second modulation symbol is used in the L the second modulation symbols
First planisphere, the mapping of at least one the second modulation symbol uses the second planisphere in the L the second modulation symbols.Make
For a sub- embodiment, the first planisphere is xQAM, and the second planisphere is that the first planisphere rotates clockwise first angle and obtains
It arrives, first angle is greater than 0 degree (degree) less than 90 degree, and the x is 4 positive integer power.The embodiment can further with
Machine second wireless singal interferes the first wireless signal bring.
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.
Wherein, the first wireless signal includes the first modulation symbol of positive integer.After first modulation symbol is multiplied by characteristic sequence
It is mapped on L resource units, the length of the characteristic sequence is L, and the L is positive integer, occupied by the first wireless signal
Running time-frequency resource and the occupied running time-frequency resource of second wireless singal be overlapped in whole or in part, second wireless singal include it is just whole
Several second modulation symbols, the second modulation symbol occupy 1 resource units.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A0:
Step A0. receives second wireless singal.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A1:
Step A1. receives the first signaling, and the first signaling indicates at least one of { L, first numerical value }.
Wherein, the first signaling is high-level signaling either physical layer signaling, the hair of first the first wireless signal of numerical value
Send the difference of the transmission power of power and second wireless singal.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A2:
Step A2. determines the L according to the corresponding bit number of the second modulation symbol.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps A3:
Step A3. receives third wireless signal.
Wherein, third wireless signal includes positive integer third modulation symbol, and third modulation symbol is the short of M multiplied by length
It is mapped to after sequence on M resource units, the M is less than the positive integer of the L.Third wireless signal and the first wireless communication
Number corresponding same group of transmission block.
Specifically, according to an aspect of the present invention, which is characterized in that the L resource units contain L1 first
Modulation symbol and L the second modulation symbols, the L1 is positive integer.
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 includes the first modulation symbol of positive integer, and second wireless singal includes positive integer second
Modulation symbol.Multiplied by being mapped on L resource units after characteristic sequence, the length of the characteristic sequence is first modulation symbol
L, the second modulation symbol occupy 1 resource units, and the L is positive integer.
As one embodiment, above-mentioned base station equipment is characterized in that, the first module is also used to send third wireless signal.
Wherein, third wireless signal includes positive integer third modulation symbol, and third modulation symbol is multiplied by quilt after the short sequence that length is M
It is mapped on M resource units, the M is less than the positive integer of the L.Third wireless signal and the first wireless signal are corresponding same
One group of transmission block.
As one embodiment, above-mentioned base station equipment is characterized in that, the L resource units contain L1 first and adjust
Symbol and L processed the second modulation symbol, the L1 is positive integer.
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.
Wherein, the first wireless signal includes the first modulation symbol of positive integer.After first modulation symbol is multiplied by characteristic sequence
It is mapped on L resource units, the length of the characteristic sequence is L, and the L is positive integer, occupied by the first wireless signal
Running time-frequency resource and the occupied running time-frequency resource of second wireless singal be overlapped in whole or in part, second wireless singal include it is just whole
Several second modulation symbols, the second modulation symbol occupy 1 resource units.
As one embodiment, above-mentioned user equipment is characterized in that, the first module is also used to receive second wireless singal.
As one embodiment, above-mentioned user equipment is characterized in that, the first module is also used to following one:
- receives the first signaling, and the first signaling indicates at least one of { L, first numerical value }.Wherein, the first signaling
It is high-level signaling either physical layer signaling, first the first wireless signal of numerical value sends power and second wireless singal
Send the difference of power.
- determines the L according to the corresponding bit number of the second modulation symbol.
Compared to existing public technology, the present invention has following technical advantage:
- inhibits the wireless signal for nearly UE to interfere brought by remote UE
- inhibits ambient noise and the downlink signal of other cells to interfere brought by remote UE
- supports the target running time-frequency resource of arbitrary dimension, avoids waste interface-free resources.
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 PRB according to an embodiment of the invention (Physical Resource Block, physical resources
Block) internal resource allocation schematic diagram；
Fig. 3 shows the schematic diagram that L according to an embodiment of the invention is 4；
Fig. 4 shows the schematic diagram of the first planisphere and the second planisphere according to an embodiment of the invention；
Fig. 5 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Fig. 6 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, the step in box F2
It is optional step, the step in step and box F2 in box F1 does not occur simultaneously.
ForBase station N1, the first wireless signal and second wireless singal are sent in step s 12.
ForUE U2, the first wireless signal and second wireless singal are received in step S22.
ForUE U3, the first wireless signal is received in step S31.
In embodiment 1, the occupied running time-frequency resource of the first wireless signal and the occupied running time-frequency resource of second wireless singal
All or part of overlapping.First wireless signal includes the first modulation symbol of positive integer, and second wireless singal includes positive integer
A second modulation symbol.First modulation symbol multiplied by being mapped to after characteristic sequence on L resource units, the characteristic sequence
Length is L, and the second modulation symbol occupies 1 resource units, and the L is positive integer.The target UE of first wireless signal is UE
U3, the target UE of second wireless singal are UE U2.
As the sub- embodiment 1 of embodiment 1, base station N1 sends the first signaling in step slo, and UE U2 is in step S20
Receive the first signaling.First signaling indicates at least one of { L, first numerical value }.Wherein, the first signaling is high-level signaling
Either physical layer signaling, the transmission power for sending power and second wireless singal of first the first wireless signal of numerical value
Difference, the unit for sending power is dBm.
As the sub- embodiment 2 of embodiment 1, base station N1 is in step s 11 according to the corresponding bit number of the second modulation symbol
Determine the L.UE U2 determines the L according to the corresponding bit number of the second modulation symbol in the step s 21.As embodiment 1
One sub- embodiment of sub- embodiment 2, the corresponding bit number of the second modulation symbol is more, and the L is smaller.As embodiment 1
The bit number of the another sub- embodiment of sub- embodiment 2, the first wireless signal accommodated in the L resource units keeps perseverance
It is fixed.
As the sub- embodiment 3 of embodiment 1, UE U2 will decode the resulting information ratio of second wireless singal in step S22
Spy passes to high level, abandons the decoding resulting information bit of the first wireless signal.
Embodiment 2
The resource allocation that embodiment 2 illustrates inside the PRB of a common CP (Cyclic Prefix, cyclic prefix) is shown
It is intended to, as shown in Fig. 2.In attached drawing 2, the lattice that thick collimation mark is known is for CRS (Cell Reference Signal, cell
Reference signal) RE, the lattice of oblique line mark is for CSI-RS (Channel Status Information
Reference Signal, channel state information reference signals) RE, the lattice of cross spider mark is for DMRS
The RE of (Demodulation Reference Signal, demodulated reference signal).
In embodiment 2, the L resource units are according to time domain first, and then the mode of frequency domain is mapped to the first wireless communication
On number occupied PRB, the resource units are RE.Above-mentioned mapping method can be avoided as far as possible since the characteristic of channel is on frequency domain
Variation caused by interference between multiple first mapping symbols (is accommodated) in the L resource units.
In embodiment 2, the L in the present invention is 16.Be filled with same numbers 16 lattices belong to one group described in L
A resource units, i.e. first modulation symbol, which can only be mapped to, to be filled in 16 RE of same numbers.
In attached drawing 2,12 lattices for being filled with E are that complete the L can not be accommodated in current PRB pair (Pair)
The surplus resources of resource units.
As the sub- embodiment 1 of embodiment 2, the first wireless signal occupies multiple PRB pairs in frequency domain, described to be filled with E
12 lattices and other PRB pairs in 4 RE collectively constituted one group described in L resource units.
As the sub- embodiment 2 of embodiment 2, the first wireless signal occupies in 1 PRB pair or attached drawing 2 in frequency domain
PRB pair is first modulation symbol mapped the last one PRB pair that the first wireless signal includes, 12 for being filled with E
Lattice is used to accommodate the third modulation symbol in the third wireless signal in the present invention, the length of the short sequence in the present invention
Spending (i.e. M) is 12.
As the sub- embodiment 3 of embodiment 2, the first wireless signal occupies in 1 PRB pair or attached drawing 2 in frequency domain
PRB pair is first modulation symbol mapped the last one PRB pair that the first wireless signal includes, 12 for being filled with E
Lattice is used to accommodate the third modulation symbol in the third wireless signal in the present invention, the length of the short sequence in the present invention
Spending (i.e. M) is 1- i.e. in 12 lattices, and the first wireless signal does not use OCC.
Embodiment 3
Embodiment 3 illustrates the schematic diagram that L is 4, as shown in Fig. 3.
The L resource units in the present invention are as shown in the resource units # { 0,1,2,3 } in attached drawing 3.The L money
4 the first modulation symbols and 4 the second modulation symbols are contained in the unit of source, wherein the first modulation symbol is mapped by OCC code
Onto 4 resource units, 4 second modulation symbols are respectively mapped on resource units # { 0,1,2,3 }.
4 first modulation symbols are ti, i=0,1,2,3,4 second modulation symbols are sj, j=0,1,2,3,
First modulation symbol tiThe OCC code that corresponding length is 4 isHair in base station side, resource units #j
Penetrating signal is (j is respectively { 0,1,2,3 }):
As the sub- embodiment 1 of embodiment 3, UE receives the first wireless signal with the following method: UE is first by L resource
The wireless signal received in unit and L element dot product of OCC demodulation code are simultaneously added, and UE is using signal after being added as institute
State the reception signal of corresponding first modulation symbol of OCC demodulation code.It is recovered using above-mentioned dot product and the method for addition, UE
The reception signal of the first modulation symbol in all first wireless signals, and carry out decoded operation.The OCC demodulation code is OCC
The conjugation that the conjugation of code, i.e. each element in OCC demodulation code are OCC code corresponding element.
As the sub- embodiment 2 of embodiment 3, UE receives second wireless singal with the following method: UE correct decoding first
First wireless signal (determines that decoding is correct according to CRC), then from the interference for eliminating the first wireless signal in signal is received, uses
(after the interference for eliminating the first wireless signal) residual signal on each resource units connects as second wireless singal
The collection of letters number carries out decoded operation to second wireless singal.
Sub- embodiment 3, C as embodiment 30=[1 11 1], C1=[1 1-1-1], C2=[1-1 1-1],
C3=[1-1-1 1], the OCC demodulation code are equal to corresponding OCC code.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the first planisphere and the second planisphere, as shown in Fig. 4.
In embodiment 4, in the L resource units in the present invention, the second modulation symbol in L/2 resource units is adopted
With the first planisphere, the second modulation symbol in L/2 resource units uses the second planisphere.First planisphere corresponds to 4QAM
(i.e. QAM), the second planisphere are to rotate clockwise 45 degree by the first planisphere to obtain, and the L is even number.
Planisphere in embodiment 4 only includes the position of constellation point, does not include mapping relations of the constellation point to bit.
Embodiment 5
Embodiment 5 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 5.In attached drawing 5, base station
Processing unit 300 is mainly made of sending module 301.
Sending module 301 is for sending the first wireless signal and second wireless singal.Wherein, occupied by the first wireless signal
Running time-frequency resource and the occupied running time-frequency resource of second wireless singal be all overlapped.First wireless signal includes positive integer first
Modulation symbol, second wireless singal include the second modulation symbol of positive integer.First modulation symbol is reflected multiplied by after characteristic sequence
It is mapped on L resource units, the length of the characteristic sequence is L, and the second modulation symbol occupies 1 resource units, and the L is just
Integer.The L resource units contain L the first modulation symbols and L the second modulation symbols.
As the sub- embodiment 1 of embodiment 5, the transmission function for sending power and being greater than second wireless singal of the first wireless signal
Rate, the L are 2 positive integer power.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 6.In attached drawing 6, UE processing
Device 400 is mainly made of receiving module 401.
Receiving module 401 is for receiving the first wireless signal and second wireless singal.Wherein, the first wireless signal includes just
The first modulation symbol of integer.First modulation symbol after characteristic sequence multiplied by being mapped on L resource units, the feature sequence
The length of column is L, and the L is positive integer, and the occupied running time-frequency resource of the first wireless signal and second wireless singal are occupied
Running time-frequency resource is all overlapped, and second wireless singal includes the second modulation symbol of positive integer, and the second modulation symbol occupies 1 resource
Unit.
As the sub- embodiment 1 of embodiment 6, the target receiver of second wireless singal is the UE, the first wireless signal
Target receiver be UE except the UE, the characteristic sequence is pseudo-random sequence.
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 in the present invention includes but is not limited to mobile phone,
Tablet computer, notebook, the wireless telecom equipments such as card of surfing Internet.Base station in the present invention includes but is not limited to macrocell base stations, micro-
Cellular 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 (14)
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 includes the first modulation symbol of positive integer, and second wireless singal includes the second modulation of positive integer
Symbol；For first modulation symbol multiplied by being mapped on L resource units after characteristic sequence, the length of the characteristic sequence is L, the
Two modulation symbols occupy 1 resource units, and the L is positive integer；
First wireless signal is high power signals, and second wireless singal is low-power signal.
2. the method according to claim 1, wherein the step A further includes following steps A1:
Step A1. sends the first signaling, and the first signaling indicates at least one of { L, first numerical value }；
Wherein, the first signaling is high-level signaling either physical layer signaling, the transmission function of first the first wireless signal of numerical value
The difference of the transmission power of rate and second wireless singal.
3. the method according to claim 1, wherein the step A further includes following steps A2:
Step A2. determines the L according to the corresponding bit number of the second modulation symbol.
4. method according to claim 1 to 3, which is characterized in that the step A further includes following steps A3:
Step A3. sends third wireless signal；
Wherein, third wireless signal includes positive integer third modulation symbol, the short sequence that third modulation symbol is M multiplied by length
After be mapped on M resource units, the M is less than the positive integer of the L；Third wireless signal and the first wireless signal pair
Answer same group of transmission block.
5. method according to claim 1 to 3, which is characterized in that the L resource units contain L1
First modulation symbol and L the second modulation symbols, the L1 is positive integer.
6. 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；
Wherein, the first wireless signal includes the first modulation symbol of positive integer；First modulation symbol is reflected multiplied by after characteristic sequence
It is mapped on L resource units, the length of the characteristic sequence is L, and the L is positive integer, when the first wireless signal is occupied
Frequency resource and the occupied running time-frequency resource of second wireless singal are overlapped in whole or in part, and second wireless singal includes positive integer
Second modulation symbol, the second modulation symbol occupy 1 resource units；
First wireless signal is high power signals, and second wireless singal is low-power signal.
7. according to the method described in claim 6, it is characterized in that, the step A further includes following steps A0:
Step A0. receives second wireless singal.
8. method according to claim 6 or 7, which is characterized in that the step A further includes following steps A1:
Step A1. receives the first signaling, and the first signaling indicates at least one of { L, first numerical value }；
Wherein, the first signaling is high-level signaling either physical layer signaling, the transmission function of first the first wireless signal of numerical value
The difference of the transmission power of rate and second wireless singal.
9. method according to claim 6 or 7, which is characterized in that the step A further includes following steps A2:
Step A2. determines the L according to the corresponding bit number of the second modulation symbol.
10. method according to claim 6 or 7, which is characterized in that the step A further includes following steps A3:
Step A3. receives third wireless signal；
Wherein, third wireless signal includes positive integer third modulation symbol, the short sequence that third modulation symbol is M multiplied by length
After be mapped on M resource units, the M is less than the positive integer of the L；Third wireless signal and the first wireless signal pair
Answer same group of transmission block.
11. method according to claim 6 or 7, which is characterized in that the L resource units contain L1 first and adjust
Symbol and L processed the second modulation symbol, the L1 is positive integer.
12. 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 includes the first modulation symbol of positive integer, and second wireless singal includes the second modulation of positive integer
Symbol；For first modulation symbol multiplied by being mapped on L resource units after characteristic sequence, the length of the characteristic sequence is L, the
Two modulation symbols occupy 1 resource units, and the L is positive integer；
First wireless signal is high power signals, and second wireless singal is low-power signal.
13. a kind of user equipment for supporting multi-user to be superimposed, wherein including following module:
First module: for receiving the first wireless signal；
Wherein, the first wireless signal includes the first modulation symbol of positive integer；First modulation symbol is reflected multiplied by after characteristic sequence
It is mapped on L resource units, the length of the characteristic sequence is L, and the L is positive integer, when the first wireless signal is occupied
Frequency resource and the occupied running time-frequency resource of second wireless singal are overlapped in whole or in part, and second wireless singal includes positive integer
Second modulation symbol, the second modulation symbol occupy 1 resource units；
First wireless signal is high power signals, and second wireless singal is low-power signal.
14. equipment according to claim 13, it is characterised in that:
First module is also used to receive second wireless singal.
Priority Applications (2)
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| US10721114B2 (en) * | 2017-11-23 | 2020-07-21 | Huawei Technologies Co., Ltd. | Method and system for symbol sequence generation and transmission for non-orthogonal multiple access transmission |
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| CN102652402A (en) * | 2009-12-10 | 2012-08-29 | 阿尔卡特朗讯 | A method for downlink communication by means of a downlink superimposed radio signal, a base station and a user terminal therefor |
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| CN102652402A (en) * | 2009-12-10 | 2012-08-29 | 阿尔卡特朗讯 | A method for downlink communication by means of a downlink superimposed radio signal, a base station and a user terminal therefor |
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