CN108377571A - For multi-user's superposed transmission（MUST）Method and apparatus - Google Patents
For multi-user's superposed transmission（MUST）Method and apparatus Download PDFInfo
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- CN108377571A CN108377571A CN201610986875.2A CN201610986875A CN108377571A CN 108377571 A CN108377571 A CN 108377571A CN 201610986875 A CN201610986875 A CN 201610986875A CN 108377571 A CN108377571 A CN 108377571A
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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Abstract
This disclosure relates to the method and apparatus for multi-user's superposed transmission (MUST), the communication means and the network equipment and terminal device of multi-user's superposed transmission being based especially on DMRS transmission, implementing at the network equipment and terminal device.By using the signaling schemes that the DMRS port for the terminal device being paired and scrambling code identifier are only sent to target terminal equipment, a large amount of possible pairing selections of all possible configuration corresponding to target terminal equipment are avoided, and significantly reduce the signaling overheads in transmission process.
Description
Technical field
Embodiment of the disclosure relates generally to wireless communication technique, more particularly, to it is being transmitted based on DMRS, in net
The communication means and the network equipment and terminal device for the multi-user's superposed transmission (MUST) implemented at network equipment and terminal device.
Background technology
Currently, long term evolution (LTE) system of being directed to, it has been proposed that a kind of downlink (DL) multi-user's superposed transmission
(MUST) technology.Using the technology, with from serving BS to user equipment about they intra-cell interference auxiliary
In the case of information, it can realize in the cell on such as physical down link sharing channel (PDSCH) and be mostly used in LTE system
Family superposed transmission.For DL MUST, following three kinds of realities have been proposed in third generation cooperative partner program (3GPP) standardization body
Existing mode：(1) PDSCH of superposition is transmitted using identical transmission plan and identical spatial pre-coding vector；(2) it uses
Identical transmission diversity scheme transmits the PDSCH of superposition；And (3) are using identical transmission plan but to be different space pre-
Coded vector transmits the PDSCH of superposition.
In RAN1#86 meetings, it is supported for the third realization method (CASE3) based on the DMRS MUST transmitted.
Unlike the pairing scene in the first realization method (CASE1) and second of realization method (CASE2) of MUST,
The terminal device being paired in the third realization method of MUST uses different spaces precoding, and the different spatial pre-coding
It is transmitted in identical transmission plan.Therefore, the work(for the terminal device being paired in the third realization method of MUST
Rate distribution is not limited to a case where terminal device is significantly more than other terminal devices, this is because the PDSCH of superposition
It separates and not only relies on the MUST of the pairing nearby power-balance between terminal device and MUST faraway terminals equipment.This
Outside, the first and second of the realization method compared to MUST, the terminal being paired in the third realization method of MUST are set
Standby order of modulation is not limited to QPSK (quadrature phase shift keying).Therefore, approved for supporting in 3GPP standards before
The signaling schemes of the transmission of the first and second of the realization method of MUST may not be used directly for supporting the of MUST
The transmission of three kinds of realization methods.In addition to this, it is contemplated that encode OCC=2 or OCC in orthogonal superposition in the transmission based on DMRS
In the case of=4, corresponds to a large amount of possible pairing selections of all possible configuration of terminal device, how to indicate to be paired
Terminal device DMRS port and scrambling code identifier (nSCID) signaling be using blind examination it is extremely complex,
And then need the signaling of instruction terminal equipment.
Invention content
Generally, embodiment of the disclosure propose transmit based on DMRS, at the network equipment and terminal device implementation
The communication means and the network equipment and terminal device of multi-user's superposed transmission (MUST).
In a first aspect, embodiment of the disclosure provide it is a kind of for the multi-purpose of first terminal equipment and second terminal equipment
The communication means of family superposed transmission (MUST).The first terminal equipment is than the second terminal equipment apart from the network equipment
Closer to.The method includes at the network equipment, receive upper from the first terminal equipment and the second terminal equipment
Downlink control information；The uplink control based on the first terminal equipment and the second terminal equipment that are received
Information processed matches the first terminal equipment and the second terminal equipment；It is sent to the first terminal equipment specific
In the down link control information and combined coding of the first terminal equipment, the combined coding only indicates and described first
The DMRS port and scrambling code identifier of the second terminal equipment of terminal device pairing.
In second aspect, embodiment of the disclosure provides a kind of for the multi-purpose of first terminal equipment and second terminal equipment
The communication means of family superposed transmission (MUST).The first terminal equipment is than the second terminal equipment apart from the network equipment
Closer to.The method includes at the first terminal equipment, being received specific to the first terminal equipment from the network equipment
Down link control information and combined coding, the combined coding only indicates described with the first terminal device pairing
The DMRS port and scrambling code identifier of second terminal equipment；And based on receiving specific under the first terminal equipment
Downlink control information is decoded with the DMRS port of the determination second terminal equipment and institute the combined coding
State scrambling code identifier.
In the third aspect, embodiment of the disclosure provides a kind of network equipment, supports first terminal equipment and second terminal
Multi-user's superposed transmission (MUST) of equipment.The first terminal equipment is than the second terminal equipment apart from the network equipment
Closer to.The equipment includes：Transceiver is configured as receiving from the first terminal equipment and the second terminal equipment
Uplink control information；Controller is configured as setting based on the first terminal equipment received and the second terminal
The standby uplink control information matches the first terminal equipment and the second terminal equipment；The transmitting-receiving
Device be additionally configured to the first terminal equipment send specific to the first terminal equipment down link control information with
And combined coding, the combined coding only indicate and the ends DMRS of the second terminal equipment of the first terminal device pairing
Mouth and scrambling code identifier.
In fourth aspect, embodiment of the disclosure provides a kind of terminal device, can be mostly used with another terminal device
Family superposed transmission (MUST), the terminal device is than the second terminal equipment range network device closer to the terminal device
Including：：Transceiver, be configured as from the network equipment receive specific to the terminal device down link control information and
Combined coding, the combined coding only indicate the DMRS port for the second terminal equipment matched with the terminal device and disturb
Code identifier；And controller, it is configured as based on the down link control information specific to the terminal device received,
The combined coding is decoded with the DMRS port of the determination second terminal equipment and the scrambling code identifier.
It will be understood that by being described below, by using only by the DMRS port for the terminal device being paired and scrambler mark
Know symbol and be sent to target terminal equipment, a large amount of of all possible configuration avoided corresponding to target terminal equipment possible match
To selection, and significantly reduce the signaling overheads in transmission process.
It should be appreciated that the content described in Summary is not intended to limit the key or again of the embodiment of the present disclosure
Feature is wanted, it is also non-for limiting the scope of the present disclosure.Other features of the disclosure will be easy to understand by description below.
Description of the drawings
It refers to the following detailed description in conjunction with the accompanying drawings, the above and other feature, advantage and aspect of each embodiment of the disclosure
It will be apparent.In the accompanying drawings, same or analogous reference numeral indicates same or analogous element, wherein：
Fig. 1 shows the example communication network that embodiment of the disclosure can be implemented within；
Fig. 2 shows the flow charts according to the exemplary communication methods of some embodiments of the disclosure；
Fig. 3 shows the flow chart of the exemplary communication method of certain other embodiments according to the disclosure；
Fig. 4 shows the block diagram of the device of some embodiments according to the disclosure；
Fig. 5 shows the block diagram of the device of certain other embodiments according to the disclosure；And
Fig. 6 shows the block diagram of the equipment of some embodiments according to the disclosure.
Specific implementation mode
Embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the certain of the disclosure in attached drawing
Embodiment, it should be understood that, the disclosure can be realized by various forms, and should not be construed as being limited to this
In the embodiment that illustrates, it is in order to more thorough and be fully understood by the disclosure to provide these embodiments on the contrary.It should be understood that
It is that being given for example only property of the accompanying drawings and embodiments effect of the disclosure is not intended to limit the protection domain of the disclosure.
Term " network equipment " as used herein refers to other realities with specific function in base station or communication network
Body or node." base station " (BS) can indicate node B (NodeB either NB), evolution node B (eNodeB or eNB), long-range nothing
Line electric unit (RRU), radio-frequency maser (RH), remote radio heads (RRH), repeater or such as femto base station, femto base
The low power nodes etc. stood etc..In the context of the disclosure, for the purpose for discussing convenient, term " network equipment " and " base
Stand " it may be used interchangeably, and may be mainly using eNB as the example of the network equipment.
Term " terminal device " as used herein or " user equipment " (UE) be refer between base station or each other it
Between any terminal device for carrying out wireless communication.As an example, terminal device may include mobile terminal (MT), subscriber stations
(SS), portable subscriber platform (PSS), mobile station (MS) or access terminal (AT) and vehicle-mounted above equipment.In the disclosure
Context in, to discuss convenient purpose, term " terminal device " and " user equipment " may be used interchangeably.
Term " downlink multiuser superposed transmission " (either DL MUST) as used herein or abbreviation MUST refer to base
Standing will together transmit to the DL Signal averagings of multiple terminal devices (or combination).In this case, terminal device is from base station
The signal received both include oneself signal (either useful signal) and also including other-end equipment signal (or interfere
Signal).
Term " comprising " as used herein and its deformation are that opening includes, i.e., " include but not limited to ".Term "based"
It is " being based at least partially on ".Term " one embodiment " expression " at least one embodiment "；Term " another embodiment " indicates
" at least one other embodiment ".The related definition of other terms provides in will be described below.
As described above, in the third realization method based on the MUST under DMRS transmission modes, it has been proposed that can be with
The auxiliary signaling of the terminal device of pairing including OCC, DMRS port and scrambling code identifier is all sent to target
Terminal device interferes for eliminating.However, being set due to there is the terminal being largely paired corresponding to the target terminal equipment
Standby possible configuration selection can cause huge signaling to be held once these configuration selections are all sent to target terminal equipment
Pin.Orthogonal in view of the MU-MIMO using OCC2 and OCC4 is at least propped up in the third realization method of MUST with correspondence
Hold, without other auxiliary signaling, therefore, in the third realization method of MUST target terminal equipment and interference
Terminal device, the DMRS port of configuration and the combination of scrambling code identifier can be by using the connection of the signaling overheads with reduction
Code is compiled in collaboration with to indicate.Therefore, in the disclosure, propose using joint coding method come by the letter of DMRS port and scrambling code identifier
The terminal device for being sent to MUST is enabled, signaling overheads significantly can be reduced to 2 by this.
Therefore, it is necessary to a kind of DMRS port of effective terminal device for being used to indicate pairing and scrambling code identifiers
Signaling schemes, enabling target terminal of the auxiliary in the third realization method based on the MUST under DMRS transmission modes is set
The necessary information of the standby terminal device for obtaining its pairing.This can be used for eliminating the third realization method for MUST
Interference at the target terminal equipment of transmission.
In order to solve these and other potential problems, embodiment of the disclosure provides a kind of be superimposed for multi-user and passes
The communication means of defeated (MUST).According to this method, enable two terminal devices (be referred to as " proximal terminal equipment " and
" distance terminal equipment ") in the case of, two terminal devices can be made into MUST pairs or MUST group, the network equipment by the network equipment
Proximally terminal device send specific to proximal terminal equipment DCI and combined coding, the combined coding can only indicate with
The DMRS port and scrambling code identifier of the distance terminal equipment of this terminal device pairing.
By this method, first terminal equipment can by using specific to its own traditional DCI and together with the DCI mono-
The combined coding sent is acted, to know DMRS port and scrambling code identification with the second terminal equipment of first terminal device pairing
Symbol sets to eliminate the first terminal transmitted in the third realization method for MUST in the case where saving signaling overheads
The interference at standby place.
Fig. 1 shows the example communication network 100 that embodiment of the disclosure can be implemented within.Communication network 100 wraps
Include the network equipment 130 and two terminal devices, that is, first terminal equipment 110, second terminal equipment 120.The network equipment 130
It can be communicated with two terminal devices 110 to 120.Correspondingly, two terminal devices 110 to 120 can pass through the network equipment 130
It communicates with one another.It should be understood that the number of the network equipment shown in FIG. 1 and terminal device has no intention merely for the sake of illustration purpose
Limitation.Network 100 may include the arbitrary an appropriate number of network equipment and terminal device.
As shown, in this example, 110 range network device 130 of first terminal equipment is relatively close, and second terminal equipment
120 range network devices 130 are farther out.That is, in this case, if described using 3GPP terminals term, the
One terminal device 110 is the proximal ends MUST UE, and second terminal equipment 120 is the distal ends MUST UE.
In certain embodiments, the network equipment 130 can be received from the first terminal equipment 110 and second terminal equipment
120 UCL, and in the UCL later based on the first terminal equipment 110 and second terminal equipment 120 that are received, the network equipment
First terminal equipment 110 and second terminal equipment 120 can be made into MUST pairs by 130, to carry out DL MUST.It should be understood that in addition to
Except first terminal equipment 110 and second terminal equipment 120 are matched, the network equipment 130 can also be by first terminal equipment 110
It is made into MUST pairs or MUST group with any number of other-end equipment in network 100.
Communication in network 100 can be implemented according to any communication protocol appropriate, including but not limited to, the first generation
The cellular communication protocols such as (1G), the second generation (2G), the third generation (3G), forth generation (4G) and the 5th generation (5G), such as electrically with electricity
The wireless LAN communication agreement of sub- Association of Engineers (IEEE) 802.11 etc., and/or times for being currently known or developing in the future
What his agreement.Moreover, the communication uses arbitrary appropriate wireless communication technique, including but not limited to, CDMA (CDMA), frequency
Point multiple access (FDMA), time division multiple acess (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple-input and multiple-output (MIMO), just
Any other technology for handing over frequency division multiple access (OFDM), and/or being currently known or developing in the future.
In certain embodiments, first terminal equipment 110 and second terminal equipment 120 are being made into MUST to later, net
Network equipment 130 can will be sent to first terminal equipment 110 specific to the DCI of the first terminal equipment 110, at the same time, should
The network equipment 130 can additionally will be specific to the combined coding for the second terminal equipment 120 matched with first terminal equipment 110
It is sent to first terminal equipment 110.This combined coding indicates the second terminal matched with first terminal equipment 110 and sets
Standby 120 DMRS port and scrambling code identifier.
As described above, in this example, it is assumed that first terminal equipment 110 is proximal terminal equipment, and second terminal equipment
120 be distance terminal equipment.In this case, as described above, in order to fight path loss, the network equipment 130 would generally be
The power of bigger is distributed as the second terminal equipment 120 of distal end, thus can be produced at the first terminal equipment 110 as proximal end
The interference of raw bigger.The network equipment 130 sends above-mentioned combined coding to the first terminal equipment 110 as proximal end, so that it may with more
Add and effectively eliminate interference, improves system performance.
Below in conjunction with Fig. 2 to Fig. 5 respectively from the angle of the network equipment 130 and first terminal equipment 110, to the disclosure
Principle and specific embodiment are described in detail.First refering to fig. 2, it illustrates the examples according to some embodiments of the disclosure
The flow chart of communication means 200.It is appreciated that method 200 can be implemented for example at the network equipment 130 as shown in Figure 1.For
Description is convenient, and method 200 is described with reference to Fig. 1.
As shown, 205, the network equipment 130 is received from first terminal equipment 110 and second terminal equipment 120
Uplink control information.It should be noted that instruction of the uplink control information here for example including channel quality, order
Instruction and pre-coding matrix instruction at least one of.
210, uplink of the network equipment 130 based on the first terminal equipment 110 and second terminal equipment 120 that are received
Road control information matches first terminal equipment 110 and second terminal equipment 120.
215, the network equipment 130 sends the downlink specific to first terminal equipment 110 to first terminal equipment 110
Control information and combined coding, the combined coding can only indicate the second terminal equipment matched with first terminal equipment 110
120 DMRS port and scrambling code identifier.
In certain embodiments, the network equipment 130 be sent to first terminal equipment 110 specific to first terminal equipment
110 down link control information may include orthogonal superposition code (OCC), DMRS port and scrambling code identifier.In addition, network is set
Can also include for the down link control information specific to first terminal equipment 110 that 130 are sent to first terminal equipment 110
The instruction of order, the number of plies of data Layer of the instruction for showing the downlink multiuser superposed transmission.
Fig. 3 shows the flow chart of the exemplary communication method 300 of certain other embodiments according to the disclosure.It can manage
Solution, method 300 can be implemented for example at the network equipment 130 as shown in Figure 1.For convenience of description, with reference to Fig. 1 to method
300 are described.
305, first terminal equipment 110 receives the downlink of specific first terminal equipment 110 from the network equipment 130
Information and combined coding are controlled, which only indicates the second terminal equipment matched with first terminal equipment 110
120 DMRS port and scrambling code identifier.In this manner it is possible to will significantly be used to indicate the configuration information of second terminal equipment
Signaling overheads be reduced to 2.
310, first terminal equipment 110 is controlled based on the downlink specific to first terminal equipment 110 received
Information is decoded combined coding to determine the DMRS port and scrambling code identifier of second terminal equipment 120.
It should be noted that the downlink control specific to first terminal equipment 110 that first terminal equipment 110 is received
Information processed includes orthogonal superposition code, DMRS port and scrambling code identifier.In addition, first terminal equipment 110 received specific to
The down link control information of first terminal equipment 110 further includes the instruction of order, and the instruction is more for showing the downlink
The number of plies of the data Layer of user's superposed transmission.
In certain embodiments, method 300 further includes that first terminal equipment 110 sends first to the network equipment 130
The uplink control information of terminal device 110, so that the network equipment 130 determines the institute matched with first terminal equipment 110
State second terminal equipment 120.It should be noted that the uplink control information of first terminal equipment 110 includes channel quality
Instruction, the instruction of order and the instruction of pre-coding matrix at least one of.
In certain embodiments, first terminal equipment 110 is decoded including the use of first received combined coding
The second terminal equipment 120 that the uplink control information inquiry of terminal device 110 is matched with first terminal equipment 110
Predefined mapping, to determine the DMRS port and scrambling code identifier of second terminal equipment 120.Hereinafter in connection with Tables 1 and 2
The predefined mapping for the second terminal equipment 120 that inquiry and first terminal equipment 110 are matched is further described to determine the
The example of the DMRS port and scrambling code identifier of two terminal devices 120.
Because the configuration of the terminal device of the third realization method for MUST in being transmitted based on DMRS can be by
It is limited to order=2 and in most 4 DMRS ports, that is, port 7,8,11 and 13 (in the case of OCC=4), this
Lead to the signaling overheads of 12 resource elements of each Physical Resource Block.At the same time, different terminal devices is identical
DMRS port on have different scrambling code identifiers, therefore, corresponding to the possibility of the terminal device in being transmitted based on DMRS
The total amount of selection of possible pairing of configuration be very big.
For the third embodiment of the MUST based on DMRS, using combined coding to send DMRS port and scrambling code identification
Signaling, signaling overheads be 2.In view of using multi-user-multiple-input and multiple-output (MU-MIMO) of OCC 2 and OCC 4 just
Mating is to being at least supported and need not further assist in the third embodiment of MUST, therefore, for target end
For end equipment and the terminal device of the pairing in MUST third embodiments, the DMRS port that is configured and scrambling code identifier
It combines with some relevances and can be indicated by using the combined coding with the signaling overheads reduced.
Once target terminal equipment obtains the value and scrambler of the DMRS port of its own from the traditional DCI of itself
The configuration of identifier, the DMRS port of the terminal device of the value instruction pairing of combined coding and the specific configuration of scrambler, this energy
It is enough that signaling overheads is significantly reduced to 2.Therefore, at most one layer interference can the third embodiment of MUST it is non-just
Mating is eliminated in the case of.
Hereinafter, for the purpose of explanation and demonstration, it will be in conjunction with the explanation of table 1 in the case where order (rank) is equal to 1, with target
The possibility situation of the configuration information of the terminal device of the corresponding pairing of configuration information of terminal device.It should be pointed out that in table 1
" target terminal equipment " may refer to first terminal equipment 110 described here, and " terminal device of pairing " may refer to
Second terminal equipment 120 described here.In the following description, still the first and second terminal devices 110 and 120 will be used to make
For example.All 12 kinds of configuring conditions of first terminal equipment 110 are listed on the left side of table 1, and are listed on the right side of table 1
Corresponding to the predefined mapping of the configuring condition of the terminal device of the pairing of each configuring condition of first terminal equipment 110.
Table 1
In the case where the order of first terminal equipment 110 is equal to 1, the layer of the data Layer of downlink multiuser superposed transmission
Number is 1 layer.It is equal to 1 first terminal equipment 110 for order, in the case of OCC=2, DMRS port can be selected from 7 and 8
It selects, and in the case of OCC=4, DMRS port can be selected from 7,8,11 and 13, and scrambling code identifier nSCIDCan be
0 or 1.In view of above-mentioned condition, for 110 a total of 12 kinds of configuring conditions of first terminal equipment.
From table 1 it follows that for each transmitting scene of first terminal equipment 110, in the third embodiment party of MUST
At most there are 3 kinds of possible pairing selections in formula.For example, the case where being 4 corresponding to numerical value, first terminal is shown in the left side of table 1
Equipment 110 received from down link control information its be configured to " 1 layer, DMRS port 7, nSCID=0, (OCC=4) ", then
It can be that is, right in table 1 by inquiring the predefined mapping with the second terminal equipment 120 of the pairing of first terminal equipment 110
The possible configuration of the corresponding pairing terminal device in side is selected as numerical value 0,1 and 2, respectively represents possible configuring condition " 1
Layer, DMRS port 8, nSCID=1 ", " 1 layer, DMRS port 11, nSCID=1 " and " 1 layer, DMRS port 13, nSCID=1 ".With
This mode, first terminal equipment 110 can determine the DMRS port and scrambling code identifier of second terminal equipment 120.
Thus, it is only required to want additional 2 DMRS ports and scrambling code identifier come the terminal device for indicating pairing.It is additional
The DMRS port and n of 2 terminal devices with instruction pairingSCID, so that first terminal equipment 110 understand that pairing
Whether terminal device is terminal device for the pairing of MUST third embodiments.If so, knowing that the terminal of the pairing is set
It is standby in which DMRS port and the n of the terminal device of the pairingSCID.First terminal equipment 110 is able to carry out interference later
It eliminates.Therefore, it is possible to the interference at this layer in the case of the upper nonopiate pairing for eliminating MUST third embodiments.
Similarly with table 1, the explanation of table 2 is in the case where order (rank) is equal to 2, with first terminal equipment 110 with confidence
Cease the possibility situation of the configuration information of the terminal device of corresponding pairing.Likewise, " the target terminal equipment " in table 2 can refer to
For first terminal equipment 110 described here, and " terminal device of pairing " may refer to second terminal equipment described here
120.In the following description, the first and second terminal devices 110 and 120 will still be used to be used as example..In the left-hand column of table 2
All 6 kinds of configuring conditions of first terminal equipment 110 are gone out, and have been listed corresponding to first terminal equipment 110 on the right side of table 2
Each configuring condition pairing terminal device configuring condition predefined mapping.
Table 2
In the case where the order of first terminal equipment 110 is equal to 2, the layer of the data Layer of downlink multiuser superposed transmission
Number is 2 layers.It is equal to 2 first terminal equipment 110 for order, in the case of OCC=2, DMRS port can be selected from 7 and 8
It selects, and in the case of OCC=4, DMRS port can be selected from 7,8,11 and 13, and scrambling code identifier nSCIDCan be
0 or 1.In view of above-mentioned condition, for 110 a total of 6 kinds of configuring conditions of first terminal equipment.
From Table 2, it can be seen that for each transmitting scene of first terminal equipment 110, in the third embodiment party of MUST
At most there are 4 kinds of possible pairing selections in formula.For example, the case where being 2 corresponding to numerical value, first terminal is shown in the left side of table 2
Equipment 110 received from down link control information its be configured to " 2 layers, DMRS port 7＆8, nSCID=0 (OCC=4) ", then
It can be that is, right in table 2 by inquiring the predefined mapping with the second terminal equipment 120 of the pairing of first terminal equipment 110
The possible configuration of the corresponding pairing terminal device in side is selected as numerical value 0,1,2 and 3, respectively represents possible configuring condition
" 1 layer, DMRS port 7, nSCID=1 ", " 1 layer, DMRS port 8, nSCID=1 ", " 1 layer, DMRS port 11, nSCID=1 " and " 1
Layer, DMRS port 13, nSCID=1 ".Herein it should be noted that in the case where the order of first terminal equipment 110 is equal to 2,
Even if the number of plies of the data Layer of downlink multiuser superposed transmission is 2 layers, first terminal equipment 110 is in embodiment of the disclosure
In be intended to eliminate wherein one layer above interference.
Thus, it is only required to want additional 2 DMRS ports and scrambling code identifier come the terminal device for indicating pairing.It is additional
The DMRS port and n of 2 terminal devices with instruction pairingSCID, so that first terminal equipment 110 understand that pairing
Whether terminal device is terminal device for the pairing of MUST third embodiments.If so, knowing that the terminal of the pairing is set
It is standby in which DMRS port and the n of the terminal device of the pairingSCID.First terminal equipment 110 is able to carry out interference later
It eliminates.Therefore, it is possible to be eliminated at most one layer of interference in the case of the nonopiate pairing of MUST third embodiments.
Pass through the description of the above-mentioned example for predefined mapping, it is possible to understand that first terminal equipment 110 can be by looking into
The mode of inquiry determines the DMRS port and scrambling code identifier of second terminal equipment 120.Tables 1 and 2 can be pre-stored in network
At equipment 130 and first terminal equipment 110.In this manner it is possible to significantly by be used to indicate second terminal equipment match confidence
The signaling overheads of breath is reduced to 2.
Fig. 4 shows the block diagram of the device 400 according to some embodiments of the disclosure.It is appreciated that device 400 can be real
Apply 130 side of the network equipment shown in Fig. 1.As shown in figure 4, device 400 (such as network equipment 130) includes：Receiving unit
405, it is configured as receiving the uplink control information from first terminal equipment 110 and second terminal equipment 120；Matching is single
Member 410 is configured as the uplink control based on the first terminal equipment 110 and second terminal equipment 120 received
Information matches first terminal equipment 110 and second terminal equipment 120；And transmission unit 415, it is configured as to first
Terminal device 110 sends the down link control information and combined coding of specific first terminal equipment 110, the combined coding
The DMRS port and scrambling code identifier for the second terminal equipment 120 that only instruction is matched with first terminal equipment 110.
In certain embodiments, receiving unit 405 further includes the first receiving unit, is configured as receiving following at least one
：The instruction of channel quality, the instruction of order and the instruction of pre-coding matrix.
In certain embodiments, transmission unit 415 further includes the first transmission unit, is configured as to first terminal equipment
110 send orthogonal superposition code, DMRS port and the scrambling code identifier of first terminal equipment 110.
In certain embodiments, the first transmission unit is additionally configured to also send the instruction of order to first terminal equipment 110,
The number of plies of data Layer of the instruction for showing downlink multiuser superposed transmission.
Fig. 5 shows the block diagram of the device 500 according to some embodiments of the disclosure.It is appreciated that device 500 can be real
Apply 110 side of first terminal equipment shown in Fig. 1.As shown in figure 5, device 500 (such as first terminal equipment 110) includes：It connects
Receive unit 505, be configured as from the network equipment 140 receive specific to the terminal device 110 down link control information with
And combined coding, combined coding only indicate the DMRS port and scrambler with the second terminal equipment 120 of the terminal device 110 pairing
Identifier；And decoding apparatus 510, it is configured as controlling based on the downlink specific to the terminal device 110 received
Information is decoded combined coding to determine the DMRS port and scrambling code identifier of second terminal equipment 120.
In certain embodiments, device 500 further includes transmission unit, is configured as sending first eventually to the network equipment 130
The uplink control information of end equipment 110, so that the network equipment 130 determines 120 the matched with first terminal equipment 110
Two terminal devices.
In certain embodiments, transmission unit further includes the first transmission unit, is configured as sending at least one of following：Letter
The instruction of road quality, the instruction of order and the instruction of pre-coding matrix.
In certain embodiments, receiving unit 505 further includes the first receiving unit, is configured as receiving first terminal equipment
110 orthogonal superposition code, DMRS port and scrambling code identifier.
In certain embodiments, the first receiving unit is additionally configured to also receive the instruction of order, under the instruction is for showing
The number of plies of the data Layer of uplink multi-user superposed transmission.
In certain embodiments, decoding unit 510 further includes the first decoding unit, is configured as utilizing first received
The second terminal equipment 120 that the uplink control information inquiry of terminal device 110 is matched with first terminal equipment 110 makes a reservation for
Benefit film showing is penetrated, with the DMRS port and scrambling code identifier of the determination second terminal equipment 120.
It should be appreciated that device 400 and each unit described in device 500 respectively with the method that describes referring to figs. 1 to Fig. 3
Each step in 200 and 300 is corresponding.Therefore, it is equally applicable to fill above in association with Fig. 1 to Fig. 3 operations described and feature
400 and device 500 and unit wherein included are set, and is had same effect, detail repeats no more.
Note that unit included in device 400 and/or 500 can profit realize in various manners, including it is software, hard
Part, firmware or its arbitrary combination.In one embodiment, one or more units can be realized using software and/or firmware,
Such as store machine-executable instruction on a storage medium.Other than machine-executable instruction or alternatively, part
Or all these units can be realized by one or more hardware logic components at least partly.As example rather than limit
System, the hardware logic component for the exemplary type that can be used includes field programmable gate array (FPGA), application-specific integrated circuit
(ASIC), application specific standard product (ASSP), system on chip (SOC), Complex Programmable Logic Devices (CPLD), etc..
These units shown in Fig. 4 and Fig. 5 can partially or entirely be embodied as hardware module, software module, consolidate
Part module or its arbitrary combination.Particularly, in certain embodiments, above-described flow, method or process can be by nets
Hardware in network equipment or terminal device is realized.For example, the network equipment or terminal device can utilize its transmitter, connect
It receives device, transceiver and/or processor or controller carrys out implementation method 200 and 300.
Fig. 6 shows the block diagram for the equipment 600 for being suitable for realizing embodiment of the disclosure.Equipment 600 can be used for realizing
The network equipment, such as the network equipment 130 shown in Fig. 1；And/or for realizing terminal device, such as first shown in Fig. 1
Terminal device 110.
As shown, equipment 600 includes controller 610.The operation of 610 control device 600 of controller and function.For example,
In certain embodiments, controller 610 can be executed by means of the instruction 630 stored in coupled memory 620
Various operations.Memory 620 can be any suitable type suitable for local technical environment, and can utilize any conjunction
Suitable data storage technology realizes that the memory device, magnetic memory device and system, light including but not limited to based on semiconductor deposit
Memory device and system.Although illustrate only a memory cell in Fig. 6, there can be multiple physics in equipment 600
Different memory cells.
Controller 610 can be any suitable type suitable for local technical environment, and may include but unlimited
In all-purpose computer, special purpose computer, microcontroller, digital signal controller (DSP) and based on controller multinuclear control
One or more of device framework is multiple.Equipment 600 can also include multiple controllers 610.Controller 610 and transceiver 640
Coupling, transceiver 640 can realize sending and receiving for information by means of one or more antennas 650 and/or other component.
Note that transceiver 640 can be individual device, can also include the individual devices for being respectively used to send and receive.
When equipment 600 serves as the network equipment 130, controller 610 and transceiver 640 can be with compounding practices, in realization
The method 200 that literary reference chart 2 describes.When equipment 600 serves as first terminal equipment 110, controller 610 and transceiver 640
Such as can under the control of the instruction 630 in memory 620 compounding practice, to realize the method 300 that is described above with reference to Fig. 3.
For example, transceiver 640 may be implemented reception with data/information and/or send related operation, and controller 610 executes or
Person's triggering is to the processing of data, operation and/or other operations.It is suitable for above with reference to all features described in Fig. 2 and Fig. 3
Equipment 600, details are not described herein.
In general, the various example embodiments of the disclosure can hardware or special circuit, software, logic or its
What implements in combining.Some aspects can be implemented within hardware, and other aspects can by controller, microprocessor or
Implement in the firmware or software that other computing devices execute.When the various aspects of embodiment of the disclosure are illustrated or described as frame
When figure, flow chart or other certain graphical representations of use, it will be understood that box described herein, device, system, techniques or methods can
Using in terms of as unrestricted example in hardware, software, firmware, special circuit or logic, common hardware or controller or other
It calculates and implements in equipment or its certain combination.
As an example, embodiment of the disclosure can be described in the context of machine-executable instruction, machine can be held
Row instruction such as includes in the program module executed in device on the true or virtual processor of target.In general,
Program module includes routine, program, library, object, class, component, data structure etc., executes specific task or realizes specific
Abstract data structure.In embodiments, the function of program module can merge between described program module or
Segmentation.Machine-executable instruction for program module can execute in local or distributed apparatus.In distributed apparatus
In, program module can be located locally in remote medium storage the two.
The computer program code of method used to implement the present disclosure can be write with one or more programming languages.These
Computer program code can be supplied to the processing of all-purpose computer, special purpose computer or other programmable data processing units
Device so that program code by computer or other programmable data processing units execution when, cause flow chart and/
Or function/operation specified in block diagram is carried out.Program code can completely on computers, part on computers, conduct
Independent software package, part are on computers and part is held on a remote computer or server on the remote computer or completely
Row.
In the context of the disclosure, machine readable media can be include or storage be used for or about instruction execution system
Any tangible medium of the program of system, device or equipment.Machine readable media can be that machine-readable signal medium or machine can
Read storage medium.Machine readable media can include but is not limited to electronics, magnetic, it is optical, electromagnetism, infrared or partly lead
Body system, device or equipment equipment or its any appropriate combination.The more detailed example of machine readable storage medium includes carrying one
Or the electrical connection of multiple conducting wires, portable computer diskette, hard disk, random access memories (RAM), read-only memory
(ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), light storage device, magnetic storage apparatus or its is any appropriate
Combination.
In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this generic operation to show
Particular order is completed with sequential order, or executes the operation of all diagrams to obtain expected result.In some cases, more
Task or parallel processing can be beneficial.Similarly, although discussed above contain certain specific implementation details, this is not
It should be interpreted that any invention of limitation or the scope of the claims, and should be interpreted that the specific embodiment to specific invention can be directed to
Description.Certain features in this specification described in the context of separated embodiment can also combined implementation single real
It applies in example.Conversely, various features described in the context of single embodiment can also discretely multiple embodiments or
Implement in any appropriate sub-portfolio.
Although with specific to the language description of structural features and or methods of action theme, but it is to be understood that institute
The theme limited in attached claim is not limited to above-described special characteristic or action.On the contrary, above-described specific spy
Action of seeking peace is disclosed as the exemplary forms for realizing claim.
Claims (20)
1. a kind of communication means for first terminal equipment and multi-user's superposed transmission (MUST) of second terminal equipment, described
First terminal equipment than the second terminal equipment apart from the network equipment closer to, the method includes：
At the network equipment, receives to control from the uplink of the first terminal equipment and the second terminal equipment and believe
Breath；
The uplink control information based on the first terminal equipment and the second terminal equipment that are received is to institute
It states first terminal equipment and the second terminal equipment is matched；
The down link control information and joint sent to the first terminal equipment specific to the first terminal equipment is compiled
Code, the combined coding only indicate and the DMRS port and scrambler of the second terminal equipment of the first terminal device pairing
Identifier.
2. coming from the first terminal equipment and the second terminal equipment according to the method described in claim 1, wherein receiving
Uplink control information include receive it is at least one of following：
The instruction of channel quality,
The instruction of order, and
The instruction of pre-coding matrix.
3. according to the method described in claim 1, the downlink wherein sent specific to the first terminal equipment controls letter
Breath includes：
Orthogonal superposition code, DMRS port and the scrambling code identifier of the first terminal equipment are sent to the first terminal equipment.
4. according to the method described in claim 1, the downlink wherein sent specific to the first terminal equipment controls letter
Breath further includes：
The instruction of order is sent to the first terminal equipment, the instruction is for showing the downlink multiuser superposed transmission
Data Layer the number of plies.
5. a kind of communication means for first terminal equipment and multi-user's superposed transmission (MUST) of second terminal equipment, described
First terminal equipment than the second terminal equipment apart from the network equipment closer to, the method includes：
At the first terminal equipment, the downlink received from the network equipment specific to the first terminal equipment controls
Information and combined coding, the combined coding only indicate and the second terminal equipment of the first terminal device pairing
DMRS port and scrambling code identifier；And
Based on the down link control information specific to the first terminal equipment received, the combined coding is solved
Code is with the DMRS port of the determination second terminal equipment and the scrambling code identifier.
6. according to the method described in claim 5, further including：
At the first terminal equipment, the uplink that the first terminal equipment is sent to the network equipment controls letter
Breath, so that the network equipment determines the second terminal equipment with the first terminal device pairing.
7. according to the method described in claim 6, the uplink control information for wherein sending the first terminal equipment includes
It sends at least one of following：
The instruction of channel quality,
The instruction of order, and
The instruction of pre-coding matrix.
8. according to the method described in claim 5, the downlink wherein received specific to the first terminal equipment controls letter
Breath includes：
Receive orthogonal superposition code, DMRS port and the scrambling code identifier of the first terminal equipment.
9. according to the method described in claim 8, the downlink wherein received specific to the first terminal equipment controls letter
Breath further includes：
Receive the instruction of order, the number of plies of data Layer of the instruction for showing the downlink multiuser superposed transmission.
10. according to the method described in claim 5, wherein to the combined coding be decoded including：
Uplink control information inquiry using the first terminal equipment received and the first terminal equipment
The predefined mapping of the second terminal equipment of pairing, with the DMRS port of the determination second terminal equipment and described
Scrambling code identifier.
11. a kind of network equipment supports multi-user's superposed transmission (MUST) of first terminal equipment and second terminal equipment, described
First terminal equipment is than the second terminal equipment apart from the network equipment closer to the equipment includes：
Transceiver is configured as receiving controlling from the uplink of the first terminal equipment and the second terminal equipment and believe
Breath；
Controller is configured as the uplink based on the first terminal equipment and the second terminal equipment that are received
Road control information matches the first terminal equipment and the second terminal equipment；
The transceiver is additionally configured to send the downlink chain specific to the first terminal equipment to the first terminal equipment
Road controls information and combined coding, and the combined coding only indicates and the second terminal of the first terminal device pairing
The DMRS port and scrambling code identifier of equipment.
12. the network equipment according to claim 11, wherein the transceiver is configured as at least one of reception or less：
The instruction of channel quality,
The instruction of order, and
The instruction of pre-coding matrix.
13. the network equipment according to claim 11, wherein the transceiver is configured as:
Orthogonal superposition code, DMRS port and the scrambling code identifier of the first terminal equipment are sent to the first terminal equipment.
14. the network equipment according to claim 13, wherein the transceiver is configured as：
The instruction of order is also sent to the first terminal equipment, the instruction is for showing that the downlink multiuser superposition passes
The number of plies of defeated data Layer.
15. a kind of terminal device can carry out multi-user's superposed transmission (MUST), the terminal device ratio with another terminal device
The second terminal equipment range network device is closer to the terminal device includes：
Transceiver is configured as receiving the down link control information and connection specific to the terminal device from the network equipment
Code is compiled in collaboration with, the combined coding only indicates the DMRS port and scrambler with the second terminal equipment of terminal device pairing
Identifier；And
Controller is configured as based on the down link control information specific to the terminal device received, to described
Code is compiled in collaboration with to be decoded with the DMRS port of the determination second terminal equipment and the scrambling code identifier.
16. terminal device according to claim 15, wherein the transceiver is configured to：
The uplink control information of the first terminal equipment is sent to the network equipment, so that the network equipment is true
The fixed second terminal equipment with the first terminal device pairing.
17. terminal device according to claim 16, wherein the transceiver is configured as at least one of transmission or less：
The instruction of channel quality,
The instruction of order, and
The instruction of pre-coding matrix.
18. terminal device according to claim 15, wherein the transceiver is configured as：
Receive orthogonal superposition code, DMRS port and the scrambling code identifier of the first terminal equipment.
19. terminal device according to claim 18, wherein the transceiver is configured as：
Also receive the instruction of order, the number of plies of data Layer of the instruction for showing the downlink multiuser superposed transmission.
20. terminal device according to claim 15, wherein the controller is configured as：
Uplink control information inquiry using the first terminal equipment received and the first terminal equipment
The predefined mapping of the second terminal equipment of pairing, with the DMRS port of the determination second terminal equipment and described
Scrambling code identifier.
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