CN107294899A - Communication means and equipment for downlink multiuser superposed transmission - Google Patents
Communication means and equipment for downlink multiuser superposed transmission Download PDFInfo
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- CN107294899A CN107294899A CN201610200805.XA CN201610200805A CN107294899A CN 107294899 A CN107294899 A CN 107294899A CN 201610200805 A CN201610200805 A CN 201610200805A CN 107294899 A CN107294899 A CN 107294899A
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- user equipment
- antenna ports
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- information
- superposition
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Classifications
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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
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
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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
- H04L27/345—Modifications of the signal space to allow the transmission of additional information
- H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
Abstract
Embodiment of the disclosure is related to a kind of communication means and equipment for downlink multiuser superposed transmission.In one embodiment, received at the first user equipment from base station for reducing the network-assist information and superposed signal of interference.Based on network-assist information, detection is directed to the signal of the second user equipment, the first user equipment and second user device pairing from superposed signal.Offset interference of the signal for being directed to second user equipment to the first user equipment.By using in accordance with an embodiment of the present disclosure, the interference between user equipment can be reduced.
Description
Technical field
Embodiment of the disclosure is related to the communication technology, more specifically, is related to for downlink
The communication means and equipment of multi-user's superposed transmission.
Background technology
Recent 3GPP have approved downlink (DL) multi-user superposed transmission (MUST)
Working group (WI).Purpose is to specify for arriving user equipment using from base station (eNB)
(UE) the auxiliary information on intra-cell interference come realize LTE support be directed to physical down
Mechanism in the DL cells of shared channel (PDSCH) needed for multi-user's superposed transmission.For
DL MUST transmission needs to consider following three kinds of situations：1) identical transmission plan and phase are used
The PDSCH of same spatial pre-coding vector transmission superposition；2) using identical transmission diversity side
The PDSCH of case transmission superposition；And 3) using identical transmission plan but using different
The PDSCH of spatial pre-coding vector transmission superposition.
In 3GPP TR 36.859, " Study on Downlink Multiuser Superposition
In Transmission (MUST) for LTE ", 3GPP discusses and examined two kinds of MUST biographies
Defeated structure, i.e. MUST classifications 1 (non-gray mapping) and classification 2 (gray mappings).
The example of MUST classifications 1 is in fig. 5 it is shown that be wherein directed to two UE transmission block (TB)
(such as TB1And TB2) be coded separately in frame 512 and 522, rate-matched (RM)
And scrambling, modulation mapping is then inherited in frame 514 and 524.Two signals after modulation
Then power distribution is carried out in the block 530, and ultimately forms the superposition letter launched by eNB
Number.Figure 6 illustrates wherein for two UE transmission block for the example of MUST classifications 2
(TB) (such as TB1And TB2) be coded separately in frame 612 and 622, rate-matched
(RM) combined modulation gray mappings and power distribution then and scrambling, are carried out in frame 630,
And ultimately form the superposed signal launched by eNB.
In traditional downlink multiuser superposed transmission scheme, for the interference between UE
In the presence of further room for improvement.
The content of the invention
In general, embodiment of the disclosure is related to for downlink multiuser superposed transmission
Communication means and equipment.
Downlink multiuser superposed transmission is used for there is provided one kind according to an aspect of this disclosure
Communication means, including：Received at the first user equipment from base station for reducing the net of interference
Network auxiliary information and superposed signal；Based on the network-assist information, from the superposed signal
Detection is directed to the signal of the second user equipment, and first user equipment is used with described second
Family device pairing；And the signal for the second user equipment is offset to described first
The interference of user equipment.
In certain embodiments, first user equipment and the second user equipment are respectively provided with
Two antenna ports, and receive the network-assist information and include：Receive and used described first
In power allocation information between family equipment and the second user equipment and the planisphere of superposition
At least one.
In certain embodiments, methods described also includes：In response to determining that first user sets
Standby have four antenna ports and the second user equipment has two COM1s, it is determined that
First user equipment, two antenna ports corresponding two with the second user equipment
Individual antenna port.
In certain embodiments, receiving the network-assist information includes：Receive described first
The planisphere of power allocation information and superposition between user equipment and the second user equipment
In at least one.
In certain embodiments, first user equipment and the second user equipment are respectively provided with
Four antenna ports, and receive the network-assist information and include：Precoding index is received,
Precoding index is with being directed to matching somebody with somebody for first paired device and the second user equipment
Precoding to selection is associated；And receive in first user equipment and second use
Power allocation information between the equipment of family and at least one in the planisphere of superposition.
In certain embodiments, first user equipment is also matched with the 3rd user equipment, institute
The first user equipment is stated with four antenna ports, the second user equipment has two antennas
Port, the 3rd user equipment has two antenna ports, receives the network-assist information
Including：Receive for determining two with the second user equipment in first user equipment
Corresponding two antenna ports of individual antenna port and for determining first user equipment
In the corresponding another two antenna port with two antenna ports of the 3rd user equipment
Information.
In certain embodiments, receiving the network-assist information also includes：Receive described the
Two antenna ports of one user equipment and two antenna ports of the second user equipment it
Between power allocation information or superposition planisphere；And receive in first user equipment
Two other antenna port and the 3rd user equipment two antenna ports between work(
Rate distributes the planisphere of information or superposition.
Downlink multiuser superposed transmission is used for there is provided one kind according to the second aspect of the disclosure
Communication means, including：Superposed signal and network-assist information are sent to the first user equipment,
The network-assist information is used to detect in the superposed signal at first user equipment
For the signal for the second user equipment matched with first user equipment so that described first
User equipment offsets the signal for the second user equipment based on the network-assist information
Interference to first user equipment.
Downlink multiuser superposed transmission is used for there is provided one kind according to the third aspect of the disclosure
User equipment, including：Reception device, is configured to receive for reducing interference from base station
Network-assist information and superposed signal；Detection means, is configured to based on network assistance letter
Breath, detection is for the signal of the second user equipment, the user from the superposed signal
Equipment and the second user device pairing；And countermeasure set is offset, it is configured to offset pin
Interference to the signal of the second user equipment to the user equipment.
Downlink multiuser superposed transmission is used for there is provided one kind according to the fourth aspect of the disclosure
Base station, including：Dispensing device, be configured to the first user equipment send superposed signal and
Network-assist information, the network-assist information is used at first user equipment detect institute
The signal that the second user equipment matched with first user equipment is directed in superposed signal is stated,
So that first user equipment is based on the network-assist information and offset for the described second use
The interference of the signal of family equipment.
It is appreciated that this part is not intended as the crucial or important spy of mark embodiment of the disclosure
Levy, be also not intended to be used to limit the scope of the present disclosure.The further feature of the disclosure will be by following
Description be easy to understand.
Brief description of the drawings
Pass through the more detailed description of some embodiments of the present disclosure in appended accompanying drawing, sheet
Disclosed above and other advantage, feature and target will become more apparent, wherein：
Fig. 1 is that embodiment of the disclosure can be embodied in environment schematic therein；
Fig. 2 is folded for downlink multiuser according to the embodiment of an aspect of this disclosure
Plus the flow chart of the communication means of transmission；
Fig. 3 is folded for downlink multiuser according to the embodiment of another aspect of the present disclosure
Plus the flow chart of the communication means of transmission；
Fig. 4 is UE in Fig. 1 in accordance with an embodiment of the present disclosure and eNB structured flowchart；
Fig. 5 is the schematic diagram of the example of MUST classifications 1；And
Fig. 6 is the schematic diagram of the example of MUST classifications 2.
In all of the figs, same or similar reference numeral represents same or similar element.
Embodiment
The principle of the disclosure is described referring now to some example embodiments.It is appreciated that these
Embodiment merely for illustrate and help it will be understood by those skilled in the art that with the embodiment disclosure
Purpose and describe, rather than suggestion scope of this disclosure any limitation.Described here
Disclosure can be implemented in the various modes outside mode described below.
As described herein, term " comprising " and its various variants are construed as open
Term, it means that " including but is not limited to ".Term "based" is construed as " extremely
It is at least partly based on ".Term " one embodiment " is construed as " at least one implementation
Example ".Term " another embodiment " is construed as " at least one other embodiment ".
Currently there are ten kinds of different transmission modes (TM) for Long Term Evolution (LTE).This
A little TM assume that it (is respectively specific cell to be used for demodulation in antenna mapping, what reference signal
Reference signal (CRS) or demodulated reference signal (DM-RS)) and terminal how to obtain letter
Channel state information (CSI) and how to feed back to network facet different.In TM1 extremely
In TM6 situation, CRS is used for channel estimation, therefore they are also referred to as based on CRS
TM.
Due to the scheme for different TM, indicated for power distribution and related tune
System and demodulating process will be dramatically different.Embodiment of the disclosure is focused primarily on for TM3's
Scheme.TM3 is also referred to as big delay loop delay diversity (CDD) scheme.
For in 3GPP 36.213, " 3rd Generation Partnership Project；
Technical Specification Group Radio Access Network；Evolved
Universal Terrestrial Radio Access(E-UTRA)；Physical layer procedures”
For the big delay CDD of middle restriction scheme, by CDD precodings Ying Yongyu will not sent out
The signal penetrated, therefore eNB generally assigns different precodings to different transmitting vectors.Example
Such as, per v vector using a different precoding, wherein v represents the feelings in spatial reuse
The number of transport layer in shape.
Herein, the UE of the pairing in multi-user's superposed transmission means in identical resource
The UE of identical transmission plan is used on element (RE).In embodiment of the disclosure,
Identical transmission plan can be big delay CDD.There are two and four antenna ports in UE
Situation in, for pairing UE selection precoding and on different antenna ports
Proximally and distally UE pairing will be different.Further, since the He of MUST classifications 1
Superposed signal in MUST classifications 2 has what is obtained from the different operating at emitter respectively
Non-gray mapping is combined planisphere and gray mappings are combined planisphere, therefore for the two classifications
Detect that distal end UE signals would also vary from near-end UE.
Herein, term " user equipment " (UE) is refer to communicate with BS any
Equipment.As an example, UE can include terminal, mobile terminal (MT), subscriber stations (SS),
Portable subscriber platform (PSS), mobile station (MS) or access terminal (AT).Especially
Ground, in the context of the disclosure, near-end UE refers in the UE matched on geographical position
From base station closer to UE, and distal end UE refer to pairing UE on geographical position from base station
Farther UE.
Term " base station " (BS) as used herein can represent node B (NodeB or
NB), enode b (eNodeB or eNB), remote radio unit (RRU),
Radio-frequency maser (RH), far end radio frequency head (RRH), repeater, low power nodes, such as
Femto base station, femto base station etc..
Fig. 1 shows that embodiment of the disclosure can be embodied in environment schematic therein.Fig. 1
In UE 110 can be that near-end UE, UE 120 can be distal end UE.Compared to UE 120
For, UE 110 from base station 105 closer to.It will be appreciated that though illustrate only in Fig. 1
Two UE, but can essentially have the UE of any number of pairing.For example below will
In some embodiments to be described, can also there is what is matched with UE 110 in environment 100
Other one or more UE, etc..The scope of the present disclosure is not limited in this respect.
In MUST TM3 situation, for UE 110 TB1May be by for UE
120 TB2Interference effect because UE 120 be in cell edge and TB2Quilt
Bigger transimission power is distributed to ensure that the signal for UE 120 can be transferred to UE 120.
UE 110 with more advanced receiver decode first for UE 120 signal and then
For example moved using some auxiliary informations for being provided to UE 110 from the superposed signal received
Except the signal for UE 120.UE 110 then decodes the PDSCH data of its own.Cause
This, if the interference caused by the signal for UE 120 can be eliminated and eliminate how many dry
Disturb that to decode its own data for UE 110 particularly important.
In order to solve above-mentioned and other potential problems, according to some embodiments of the present disclosure,
In big delay CDD schemes with two and four antenna ports, it can send for MUST
The network-assist information of classification 1 and classification 2.So, (the first UE, for example, scheme near-end UE
UE 100 in 1) network-assist information can be used to correctly decode for distal end UE (
UE of two UE 120 or unshowned 3rd, etc.) signal and from superposed signal remove
The signal is so as to be correctly decoded the signal for its own.By using the implementation according to the disclosure
Example, near-end UE can eliminate interference of the signal to near-end UE for distal end UE.At this
Wen Zhong, offsets or eliminates interference and mean at least partly counteracting or with eliminating interference and maximum probability complete
It is complete to offset or eliminate interference, though and be not excluded for performing scheme in accordance with an embodiment of the present disclosure because
The inapparent example of counteracting or elimination interference caused by other factorses.
Fig. 2 shows multi-purpose for downlink according to the embodiment of an aspect of this disclosure
The flow chart of the communication means 200 of family superposed transmission.In certain embodiments, method 200
It can such as be implemented by the UE 110 in Fig. 1.Sent out to the UE 110 and 120 of pairing base station 105
Send wireless signal.For example, as described above, base station 105 will be according to MUST classifications 1 or classification
Superposed signal after 2 modulation is sent to UE 110.For the sake of for convenience of description, UE 110 can claim
For " the first UE ", UE 120 can be described as " the 2nd UE ".
In step 202, UE 110 receives the network assistance letter for reducing interference from base station 105
Breath and superposed signal.After network-assist information and superposed signal is received, UE 110 exists
Network-assist information is based in step 204, letter of the detection for UE 120 from superposed signal
Number.
Next, UE 110 after the signal for UE 120 is detected at step 206
Interference of the signal for being directed to UE 120 to UE 110 is offset, for example, passes through and is moved from superposed signal
Except the signal for UE 120.After the signal for UE 120 is removed, 110 couples of UE
Decoded for the signal of its own, so as to obtain interference-free signal.
Fig. 3 shows multi-purpose for downlink according to the embodiment of an aspect of this disclosure
The flow chart of the communication means 300 of family superposed transmission.In certain embodiments, method 200
It can such as be implemented by the base station 105 in Fig. 1.Base station 105 UE 110 from step 302 to pairing
The superposed signal after for example being modulated according to MUST classifications 1 or classification 2 is sent with 120.
In TM3, base station 105 knows UE 110 and 120 antenna port number, for example
2 or 4.Therefore, base station 105 can be according to UE 110 and 120 antenna port number
Mesh Configuration network auxiliary information.For the MUST transmission with big delay CDD, deposit
In the situation of following four antenna configuration：(1) UE 110 and UE 120 are respectively provided with two days
Line end mouthful；(2) UE 110 has four antenna ports, and UE 120 has two antennas
Port, UE 110 is only matched with UE 120；(3) UE 110 and UE 120 are respectively provided with four
Individual antenna port；And (4) UE 110 has four antenna ports, UE 120 has two
Antenna port, UE 110 except with UE 120 match in addition to also with the 3rd UE (in Fig. 1 not
Show, distal end UE) pairing.Illustrate network by being configured for different antenna ports below
The example of auxiliary information.
There are two antenna ports for UE 110 and UE 120 is with two antenna ports
Speech, because only one precoding is chosen in TM3, therefore UE 110 and UE 120 will
Use identical precoding.How precoding is selected defined in 3GPP TS36.211.
Shown in table 1 for the transmission on antenna port { 0,1 } and for based on antenna port { 0,1 }
Or the code book of the CSI report of { 15,16 }, wherein v represent correspond to precoding index for 0 it is pre-
Encoder matrix.
Table 1 be used on antenna port { 0,1 } transmission and for based on antenna port { 0,1 } or
{ 15,16 } code book of CSI report.
Table 1
Therefore, only has a possibility in the big delay CDD schemes with two antenna ports
Precoding it is available.For MUST classifications 1, near-end UE 110 and distal end UE
120 TB is coded separately and modulated, and is then folded with the compound planisphere of non-gray mapping
Plus.In order to detect and offset the signal of the distal end UE 120 at near-end UE 110, base station
105 can indicate the power distribution between the UE of pairing with proximally UE 110.
For MUST classifications 2, near-end UE 110 and distal end UE 120 signal quilt
It is separately encoded, but uses gray mappings to be combined planisphere combined modulation.The signal of combined modulation
It is pre-coded before transmission using the code symbol that prelists.In one embodiment, the planisphere of superposition
(gray mappings are combined the information of planisphere) is sent to UE 110.If the constellation of superposition
Map number is limited, if can then use kilo byte notify UE 110 be superimposed planisphere and
Power divider information between the UE of pairing.
In another embodiment, accurate power allocation information and for combined modulation UE 110
Operation with UE 120 signal is directly indicated to UE 110.By using the network assistance
Information, can correctly detect UE 120 signal at UE 110.
In the case of UE 110 has four ports, according to 3GPP 36.213, " 3rd
Generation Partnership Project；Technical Specification Group Radio
Access Network；Evolved Universal Terrestrial Radio Access(E-UTRA)；
Physical layer procedures ", UE assume that eNB in the shared letter of physical down link
Circulation assigns different precodings to different transmission vectors on road.One is changed per v vector
Different precodings, wherein v represent the number of the transport layer in the situation of spatial reuse.Tool
For body, according to W (i)=CkSelect precoding, wherein k represent byGive
The precoding index gone out, and C1,C2,C3,C4Expression corresponds respectively to precoding index 12,13,14
With 15 pre-coding matrix, as shown in Table 2 below.
Table 2 be used for transmission on antenna port { 0,1,2,3 } and for based on antenna port { 0,1,2,3 } or
{ 15,16,17,18 } code book of CSI report
Table 2
If UE 110 is only matched with UE 120, UE 110 has four antenna ports, simultaneously
And UE 120 has two antenna ports, UE 110 is determined by the interference blind check of itself
Two antenna ports pair of two antenna ports and UE 120 in 110 4 antenna ports of UE
Should or it match.In the case of transmission due to the signal in UE 120 by two antenna ports
A precoding is only selected in TM3.Therefore, for the detection at UE 110 and counteracting UE 120
Signal interference, the network-assist information sent from base station 105 to UE 110 can include
Power allocation information between the UE of pairing and at least one in the planisphere information of superposition.
This situation with can above for UE 110 and UE 120 situation for being respectively provided with two antenna ports
With similar.
In the case of UE 110 and UE 120 are respectively provided with four antenna ports, from base station 105
The precoding that the network-assist information sent to UE 110 can include UE 120 is indexed, and
The network-assist information can also be included in power allocation information and the constellation information being superimposed extremely
One item missing.
If UE 110 not only matches with UE 120, also with other one or more UE (not
Show, be referred to as " the 3rd UE ") pairing, UE 110 is with four antenna ports, UE 120
In the case of there is two antenna ports with the 3rd UE, sent from base station 105 to UE 110
Network-assist information can include and match somebody with somebody on UE 110 any two antenna ports with UE 120
Pair and UE 110 two other antenna port and the 3rd UE pairing signaling.At one
In embodiment, the signaling can be represented by four element vectors.For example, [1 10 0] mean UE
110 the first two layer (antenna port) and UE 120 match and with two antenna port
Correspondence, and latter two layer is matched with the 3rd UE and corresponding with two antenna port.The net
Network auxiliary information can also include power allocation information, the UE between UE 110 and UE 120
110 and the 3rd power allocation information between UE.In addition, the network-assist information can be with
The superposition planisphere information of superposition planisphere information and the 3rd UE including UE 120.
Fig. 4 shows UE 110 and base station 105 in Fig. 1 in accordance with an embodiment of the present disclosure
Structured flowchart.UE 110 includes reception device 1102, detection means 1104 and offsets interference
Device 1106.Base station 105 includes dispensing device 1052.Reception device 1102, which is received, comes from base
Stand 105 dispensing device send TM3 patterns under superposed signal and network-assist information.
After superposed signal and network-assist information is received, UE 110 detection means 1104
The signal for UE 120 is detected according to the network-assist information received.Detecting to be directed to
After UE 120 signal, countermeasure set 1106 is offset for example by being removed from superposed signal
For UE 120 signal, so as to offset interference of pin UE 120 signal to UE 110.
These devices shown in Fig. 4 can partially or entirely be embodied as hardware module, soft
Part module, firmware module or its any combination.Especially, in certain embodiments, above
Flow, method or the process of description can be realized by the hardware in UE or base station.For example,
UE can be realized using its transmitter, receiver, transceiver and/or processor or controller
Method 200, and base station can be using its transceiver and/or processor or controller come implementation method
300。
It should be appreciated that the various embodiments of the disclosure can be currently known or in the future exploitation
Various mechanism, standard or environment for downlink multiuser superposed transmission.For example, this hair
Bright embodiment can apply to shown in non-gray mapping modulation scheme and/or Fig. 6 shown in Fig. 5
Gray mappings modulation scheme.
In general, the various embodiments of the disclosure can with hardware or special circuit, software,
Logic or its any combination are implemented.Some aspects can be implemented with hardware, and some other aspect
Can with firmware or software implementation, the firmware or software can by controller, microprocessor or its
Its computing device.Although the various aspects of the disclosure are shown and described as block diagram, flow
Figure is represented using some other drawing, but it is understood that frame described herein, equipment, being
System, techniques or methods can be in a non limiting manner with hardware, software, firmware, Special electrics
Road or logic, common hardware or controller or other computing devices or some of combination are implemented.
In addition, although operation is described with particular order, but this is understood not to require this kind of
Operation is performed or performed with generic sequence in the order shown, or requires all shown behaviour
It is performed to realize expected result.In some cases, multitask or parallel processing can be
Favourable.Similarly, although wrapped in the superincumbent discussion of details of some specific implementations
Contain, but these are not necessarily to be construed as any limitation of scope of this disclosure, but feature
Description is only to be directed to specific embodiment.Some features described in some embodiments of separation
Can in combination it be performed in single embodiment.Mutually oppose, it is each described in single embodiment
Planting feature can also be implemented separately or with any suitable sub-portfolio in various embodiments
Mode implement.
Although the disclosure is described with specific structural features and/or method action, but it is understood that
The disclosure limited in the dependent claims is not necessarily limited to above-mentioned specific features or dynamic
Make.Above-mentioned specific features and action are merely disclosed as implementing the exemplary forms of claim.
Claims (24)
1. a kind of communication means for downlink multiuser superposed transmission, including：
At the first user equipment from base station receive for reduce interference network-assist information and
Superposed signal；
Based on the network-assist information, detection is used for described second from the superposed signal
The signal of family equipment, first user equipment and the second user device pairing；And
The signal for the second user equipment is offset to first user equipment
Interference.
2. according to the method described in claim 1, wherein first user equipment and described
Two user equipmenies are respectively provided with two antenna ports, and receive the network-assist information and include：
Receive the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
3. according to the method described in claim 1, methods described also includes：
In response to determining that first user equipment has four antenna ports and described second
User equipment has two COM1s, determine first user equipment, with described second
Two antenna ports of two antenna ports superposition pairing of user equipment.
4. method according to claim 3, wherein receiving the network-assist information includes：
Receive the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
5. according to the method described in claim 1, wherein first user equipment and described
Two user equipmenies are respectively provided with four antenna ports, and receive the network-assist information and include：
Precoding index is received, the precoding index is with being directed to first paired device and institute
Stating the precoding for matching selection of second user equipment is associated；And
Receive the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
6. according to the method described in claim 1, wherein first user equipment is also with the 3rd
User equipment is matched, and first user equipment has four antenna ports, the second user
Equipment has two antenna ports, and the 3rd user equipment has two antenna ports, receives
The network-assist information includes：
Receive for determining two with the second user equipment in first user equipment
Corresponding two antenna ports of individual antenna port and for determining first user equipment
In the corresponding another two antenna port with two antenna ports of the 3rd user equipment
Information.
7. method according to claim 6, is also wrapped wherein receiving the network-assist information
Include：
Receive two antenna ports and the second user equipment in first user equipment
Two antenna ports between power allocation information or superposition planisphere；And
Receive two other antenna port in first user equipment and the 3rd user
The planisphere of power allocation information or superposition between two antenna ports of equipment.
8. a kind of communication means for downlink multiuser superposed transmission, including：
Superposed signal and network-assist information, the network assistance letter are sent to the first user equipment
Cease and be directed to and described first for being detected at first user equipment in the superposed signal
The signal of the second user equipment of user equipment pairing so that first user equipment is based on institute
State network-assist information and offset the signal for the second user equipment to first user
The interference of equipment.
9. method according to claim 8, wherein first user equipment has two
Or four antenna ports and the second user equipment have two antenna ports, and send
The network-assist information includes：
It is sent in the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
10. method according to claim 8, wherein first user equipment and described
Second user equipment is respectively provided with four antenna ports, and sends the network-assist information and include：
Precoding index is sent, the precoding index is with being directed to first paired device and institute
Stating the precoding for matching selection of second user equipment is associated；And
It is sent in the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
11. method according to claim 8, wherein first user equipment is also with
Three user equipmenies are matched, and first user equipment has four antenna ports, and described second uses
Family equipment has two antenna ports, and the 3rd user equipment has two antenna ports, and
And the transmission network-assist information includes：
Send for determining two with the second user equipment in first user equipment
Corresponding two antenna ports of individual antenna port and for determining first user equipment
In the corresponding another two antenna port with two antenna ports of the 3rd user equipment
Information.
12. method according to claim 11, wherein sending the network-assist information also
Including：
It is sent in two antenna ports and the second user equipment of first user equipment
Two antenna ports between power allocation information or superposition planisphere；And
It is sent in two other antenna port of first user equipment and the 3rd user
The planisphere of power allocation information or superposition between two antenna ports of equipment.
13. a kind of user equipment for downlink multiuser superposed transmission, including：
Reception device, be configured to from base station receive for reduce interference network-assist information and
Superposed signal；
Detection means, is configured to be based on the network-assist information, from the superposed signal
Detection is directed to the signal of the second user equipment, and the user equipment is set with the second user
Standby pairing；And
Countermeasure set is offset, is configured to offset the signal for the second user equipment
Interference to the user equipment.
14. user equipment according to claim 13, wherein the user equipment and described
Second user equipment is respectively provided with two antenna ports, and the reception device is configured to receive
Power allocation information and superposition between the user equipment and the second user equipment
At least one in planisphere.
15. user equipment according to claim 13, the user equipment also includes：
Determining device, is configured in response to determine that the user equipment has four antenna ports
And the second user equipment has that two COM1s determine the user equipment and institute
State corresponding two antenna ports of two antenna ports of second user equipment.
16. user equipment according to claim 15, wherein the reception device also by with
It is set to the power allocation information received between the user equipment and the second user equipment
Or at least one in the planisphere of superposition.
17. user equipment according to claim 13, wherein the user equipment and described
Second user equipment is respectively provided with four antenna ports, and the reception device is configured to：
Precoding index is received, the precoding index is with being directed to first paired device and institute
Stating the precoding for matching selection of second user equipment is associated；And
Receive the power allocation information between the user equipment and the second user equipment
With at least one in the planisphere of superposition.
18. user equipment according to claim 13, wherein the user equipment is also with
Three user equipmenies are matched, and the user equipment has four antenna ports, and the second user is set
Standby to have two antenna ports, the 3rd user equipment has two antenna ports, described to connect
Receiving apparatus is configured to：
Receive for determining two days with the second user equipment in the user equipment
Corresponding two antenna ports of line end mouthful and for determine in the user equipment with institute
State the information of the corresponding another two antenna port of two antenna ports of the 3rd user equipment.
19. user equipment according to claim 18, wherein the reception device also by with
It is set to：
Receive the user equipment two antenna ports and the second user equipment two
The planisphere of power allocation information or superposition between individual antenna port；And
Receive two other antenna port and the 3rd user equipment in the user equipment
Two antenna ports between power allocation information or superposition planisphere.
20. a kind of base station for downlink multiuser superposed transmission, including：
Dispensing device, is configured to send superposed signal and network assistance letter to the first user equipment
Breath, the network-assist information is used at first user equipment detect the superposed signal
In be directed to the signal of the second user equipment matched with first user equipment so that described the
One user equipment offsets the letter for the second user equipment based on the network-assist information
Number interference.
21. base station according to claim 20, wherein first user equipment has two
Individual or four antenna ports and the second user equipment have two antenna ports, and institute
Dispensing device is stated to be configured to：
Sending the network-assist information includes being sent in first user equipment and described the
Power allocation information between two user equipmenies and at least one in the planisphere of superposition.
22. base station according to claim 20, wherein first user equipment and described
Second user equipment is respectively provided with four antenna ports, and the dispensing device is configured to：
Precoding index is sent, the precoding index is with being directed to first paired device and institute
Stating the precoding for matching selection of second user equipment is associated；And
It is sent in the power distribution between first user equipment and the second user equipment
Information and at least one in the planisphere of superposition.
23. base station according to claim 20, wherein first user equipment is also with
Three user equipmenies are matched, and first user equipment has four antenna ports, and described second uses
Family equipment has two antenna ports, and the 3rd user equipment has two antenna ports, and
And the dispensing device is configured to：
Send for determining two with the second user equipment in first user equipment
Corresponding two antenna ports of individual antenna port and for determining first user equipment
In the corresponding another two antenna port with two antenna ports of the 3rd user equipment
Information.
24. base station according to claim 23, wherein the dispensing device is further configured to：
It is sent in two antenna ports and the second user equipment of first user equipment
Two antenna ports between power allocation information or superposition planisphere；And
It is sent in two other antenna port of first user equipment and the 3rd user
The planisphere of power allocation information or superposition between two antenna ports of equipment.
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| CN201610200805.XA CN107294899B (en) | 2016-03-31 | 2016-03-31 | Communication method and apparatus for downlink multi-user superposition transmission |
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| CN201610200805.XA CN107294899B (en) | 2016-03-31 | 2016-03-31 | Communication method and apparatus for downlink multi-user superposition transmission |
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| CN107294899B (en) | 2021-09-03 |
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