CN106470495B - A kind of dispatching method and device - Google Patents
A kind of dispatching method and device Download PDFInfo
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- CN106470495B CN106470495B CN201510502455.8A CN201510502455A CN106470495B CN 106470495 B CN106470495 B CN 106470495B CN 201510502455 A CN201510502455 A CN 201510502455A CN 106470495 B CN106470495 B CN 106470495B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
Abstract
The invention discloses a kind of dispatching method and devices.The present invention includes: to determine that descending control signaling, the downlink data include one or two transmission block according to downlink data to be transmitted；The descending control signaling is sent, the descending control signaling is used to indicate the scrambling code configuration of the corresponding DMRS port of the downlink data and each DMRS port, and a DMRS port corresponds to a data flow in the downlink data；Wherein, when the number of data streams for a dispatching user facility is one of 1 to 4, there are two types of selections for the scrambling code configuration of corresponding DMRS port, and when the number of data streams for a dispatching user facility is one of 5 to 8, the scrambling code of corresponding DMRS port is configured with a kind of selection.The transmitting and scheduling of most 8 flow datas can be achieved in the present invention.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of dispatching methods and device.
Background technique
MU-MIMO (Multi-User Multiple-Input Multiple-Output, multi-user's multiple-input and multiple-output)
System is one of the important technology of current various wireless communication system.LTE (Long Term Evolution, long term evolution) system
System supports MU-MIMO technology since Rel.9.MU-MIMO technology includes downlink MU-MIMO technology and uplink MU-MIMO technology.
In downlink MU-MIMO technology, base station uses different wave beams to the data of different UE (User Equipment, user equipment)
Figuration matrix carries out figuration, is then superimposed upon on identical frequency and time resource and sends.
For the data using MU-MIMO technical transmission, demodulation is based on DMRS (Demodulation Reference
Symbol, demodulated reference signal), wherein DMRS is alternatively referred to as DRS (Dedicated reference signal, dedicated reference
Signal) or URS (UE-specific reference signal, user-specific reference signal).DMRS includes orthogonal DMRS
With nonopiate DMRS.In existing LTE system, two orthogonal DMRS ports are can be used in the user dispatched in MU-MIMO, this
Two DMRS ports are respectively DMRS port 7 (DMRS port 7) and DMRS port 8 (DMRS port 8).One DMRS port
One at least two DMRS scramble sequences can be used, if two UE are scheduled in a DMRS port but use
Different DMRS scramble sequences still can then distinguish the signal of two UE in the side UE.Two scrambler sequences pass through a sequence
Generator is generated using two different initial ID, which is known as SCID (scrambling sequence ID, scrambling code sequence
Column mark), SCID=(0or 1).The SCID and DMRS port that each UE is used notify UE by downlink signaling.
MU-MIMO transmission has the following characteristics that
DMRS port 7 and DMRS port 8 are equal to 2 orthogonal code (Orthogonal Cover Code, OCC) using length
It is orthogonal to carry out code point；
Each DMRS port is supported at least two non-orthogonal DMRS scramble sequences (scrambling sequence)
One；
- one UE can only receive a DMRS scramble sequence in a period, such as a subframe (subframe)；
- one UE can receive a data flow (rank-1) or 2 data flows (rank-2)；
Base station can at most send four flow datas to different UE simultaneously, pass for example, the UE of two rank-2 is matched
It is defeated, or the UE of UE and two rank-1 of a rank-2 is matched into transmission, four flow data be dispensed on two it is orthogonal
In DMRS port and distribute there are two nonopiate scrambler sequence.
In order to guarantee that the side UE can correctly demodulate, need to lead to the quantity of DMRS port, DMRS SCID and data flow
It crosses descending control signaling and is sent to UE in each subframe.
In the prior art, when being scheduled, DMRS port and SCID configuration are still not perfect, and are constituted and are limited to transmitting and scheduling
System.
Summary of the invention
The embodiment of the invention provides a kind of dispatching method and devices, to improve transmitting and scheduling process.
Dispatching method provided in an embodiment of the present invention, comprising:
Determine that descending control signaling, the downlink data include one or two transmission according to downlink data to be transmitted
Block；
The descending control signaling is sent, the descending control signaling is used to indicate the corresponding demodulation ginseng of the downlink data
The scrambling code configuration of signal DMRS port and each DMRS port is examined, a DMRS port corresponds to one in the downlink data
Data flow；Wherein, when the number of data streams for a dispatching user facility is one of 1 to 4, corresponding DMRS port
Scrambling code configuration is corresponding when the number of data streams for a dispatching user facility is one of 5 to 8 there are two types of selection
The scrambling code of DMRS port is configured with a kind of selection.
Dispatching device provided in an embodiment of the present invention, comprising:
Determining module, for determining that descending control signaling, the downlink data include one according to downlink data to be transmitted
A or two transmission blocks；
Sending module, for sending the descending control signaling, the descending control signaling is used to indicate the lower line number
According to the scrambling code of corresponding demodulated reference signal DMRS port and each DMRS port configure, a DMRS port correspond to it is described under
A data flow in row data；Wherein, right when the number of data streams for a dispatching user facility is one of 1 to 4
There are two types of selections for the scrambling code configuration for the DMRS port answered, when the number of data streams for a dispatching user facility is one in 5 to 8
When kind, the scrambling code of corresponding DMRS port is configured with a kind of selection.
It include the feelings of a transmission block or two transport block transmissions for downlink data in the above embodiment of the present invention
Condition, by the various combinations of DMRS port distribution and scrambling code configuration, it can be achieved that the transmitting and scheduling of most 8 flow datas, perfect existing
There is the transmitting and scheduling scheme in technology.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is scheduling flow schematic diagram provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of dispatching device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of base station provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Base station in the embodiment of the present invention, can be in LTE system evolved base station (Evolutional Node B,
Referred to as eNB or e-NodeB), macro base station, micro-base station (also referred to as " small base station "), femto base station, access website (Access
Point, referred to as AP) or transmission website (Transmission Point, referred to as TP) etc., the present invention does not limit this.
User equipment in the embodiment of the present invention can be referred to as terminal (Terminal), mobile station (Mobile
Station, referred to as MS), mobile terminal (Mobile Terminal), MTC terminal etc., which can wirelessly be connect
Networking (Radio Access Network, referred to as RAN) is communicated with one or more core nets.
For convenience of description, following embodiments will be illustrated by taking base station and user equipment as an example.
The embodiment of the present invention proposes under the hypothesis of following restrictive condition.It may be noted that design parameter here can become
Dynamic, the content that the embodiment of the present invention proposes is stood good using other parameters numerical value, is not repeated here.These are false
If condition includes:
- one user equipment at most receives 8 flow datas, uses 8 DMRS ports；That is, at most can be a use
Family equipment distributes 8 DMRS ports, dispatches 8 data flows, wherein each DMRS port corresponds to a data flow.One user sets
For when being scheduled in MU-MIMO transmission in a subframe, N (such as 1≤N≤4) flow data at most can receive.
System one shares LportA (such as 8) orthogonal DMRS port, is labeled as port 7 to port 14 here, wherein
LportIndicate the quantity of orthogonal DMRS port.
It should be noted that the name of DMRS port and mark can be using other modes, for example port definition is end
Mouthful 0 to port to 7, and the embodiment of the present invention is also applied for the notation methods of other DMRS ports, is not limited to above to port
Notation methods do not repeat here.
Correspondingly, the case where DMRS port configuration of the embodiment of the present invention is also applied for other port permutation and combination.For example,
Arrange { 7,8,9,10,11,12,13,14 } corresponding to DMRS port, can newly define a kind of corresponding DMRS port arrangement 7,8,
11,13,8,9,12,14 }, the content of the embodiment of the present invention can be applicable under the arrangement of new corresponding DMRS port, here not
It repeats again.
From base station angle, MU-MIMO supports most LmaxStream (such as 8 streams) data transmission.Base station at most sends L simultaneouslymax
Flow data, it (is in this case SU-MIMO biography that the target UE for the data flow that base station is sent, which can be a user equipment,
It is defeated) it is also possible to multiple user equipmenies (being in this case MU-MIMO transmission).MU-MIMO can pass throughIt is a orthogonal
DMRS port and NSCIDA scrambler sequence is realized.As an example, Lmax=8, NSCID=2 (i.e. 2 kinds of scrambling code configurations), support 4
A orthogonal DMRS port and two nonopiate scrambler sequences.Wherein, LmaxIndicate the maximum number for the data flow that MU-MIMO is supported
Amount, NSCIDIndicate the quantity for the scrambler sequence that an orthogonal DMRS port uses.
- one user equipment can only receive a DMRS scramble sequence configuration in a subframe, so downlink signaling is not
It needs in a subframe to the SCID that a user device configuration is different.The case where more than one SCID is configured can simply push away
It leads and obtains, the embodiment of the present invention repeats no more.
Below based on above-mentioned hypothesis restrictive condition, the embodiment of the present invention is described in detail in conjunction with attached drawing.
It is scheduling flow schematic diagram provided in an embodiment of the present invention referring to Fig. 1, which can be executed by dispatching device, institute
Stating dispatching device can be base station, be also possible to be built in the device of base station or module.
As shown in Figure 1, the process can include:
Step 101: determining that descending control signaling, the downlink data include one or two according to downlink data to be transmitted
A transmission block (Transport Block, referred to as TB, alternatively referred to as Codeword, code word).
Wherein, user equipment can receive a transmission block or two transmission blocks, if the I of a transmission blockMCS=0
And rvidx=1, then the transmission block is not present, otherwise the transmission block exists.Wherein, IMCSAnd rvidxLead in respectively different signaling
Know, according to IMCSAnd rvidxIt can determine the quantity of transmission block, IMCSIndicate modulation and coding strategy (Modulation and
Coding Scheme, MCS) index value, rvidxIndicate redundancy versions (Redundancy Version, RV) value of the transmission block.
Step 102: sending the descending control signaling, the descending control signaling is used to indicate the corresponding end DMRS of the downlink data
Mouth and the configuration of the scrambling code of each DMRS port, a DMRS port correspond to a data flow in the downlink data.Specifically
Ground, by the combination of descending control signaling notifying user equipment { DMRS port, SCID }, user equipment can be controlled according to the downlink
Signaling carries out data receiver.
Wherein.(Single-User Multiple-Input Multiple-Output, is applied alone by MU-MIMO and SU-MIMO
Family multiple-input and multiple-output) it is dispatched jointly using the same downlink signaling.
In downlink transfer, further, before step 101, it may also include the steps of that (step is not shown in figure
Out): base station determines downlink data to be transmitted.When it is implemented, base station can be according to resource allocation conditions, the downlink of user equipment
The information such as data volume, the ability of user equipment, are scheduled user equipment, for example, determining that scheduling which or which user sets
It is standby, the scheduled number of data streams of each user equipment, if to scheduled user equipment using MU-MIMO transmission etc..Phase
Ying Di, base station further send downlink data to be transmitted.
Wherein, when the number of data streams for a dispatching user facility is one of 1 to 4, corresponding DMRS port
Scrambling code configuration there are two types of selection, when the number of data streams dispatched for a UE is one of 5 to 8, the corresponding end DMRS
The scrambling code of mouth is configured with a kind of selection.
Preferably, when the number of data streams for a dispatching user facility is one of 1 to 4, for the user equipment
The DMRS port of distribution is one group of port in first port set, and the first port set expression is { N1, N2, N3, N4 },
When the number of data streams for a dispatching user facility is one of 5 to 8, the DMRS port for user equipment distribution is
One group of port in second port set, the second port set expression are { N1, N2, N3, N4, N5, N6, N7, N8 }.Its
In, N1 to N8 respectively indicates a DMRS port.
According to above-mentioned DMRS port and scrambling code equipping rules, in some embodiments of the invention, DMRS port or port
Combination and scrambling code configuring condition may include one of following or multiple combinations:
When the number of data streams for a dispatching user facility is 1, for the user equipment distribution DMRS port be on
State the either port in first port set；
When the number of data streams for a dispatching user facility is 2, the DMRS port for user equipment distribution is institute
The port combination { N1, N2 } or port combination { N3, N4 } in first port set are stated, scrambling code is configured to nSCID=0 or nSCID=1,
Wherein, nSCIDIndicate scrambler sequence mark；Alternatively, the DMRS port for being user equipment distribution is in the first port set
Port combination { N1, N2 } or port combination { N3, N4 } or port combination { N2, N3 }, scrambling code is configured to nSCID=0 or nSCID
=1；
When the number of data streams for a dispatching user facility is 3, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3 } in first port set is stated, scrambling code is configured to nSCID=0 or nSCID=1；
When the number of data streams for a dispatching user facility is 4, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3, N4 } in first port set is stated, scrambling code is configured to nSCID=0 or nSCID=1.
It, can in the manner described above, from second port collection when being more than 4 for the number of data streams of a dispatching user facility
Select the port assignment of respective numbers to the user equipment in conjunction.The DMRS port for distributing to the user equipment can continuously may be used
With discontinuous.In the embodiment of the present invention, it is preferable that in the case where being more than 4 for the number of data streams of a dispatching user facility,
It is transmitted using SU-MIMO mode, more preferably selects continuous DMRS port to be allocated in this case, specifically may include following
Situation:
When the number of data streams for a dispatching user facility is 5, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3, N4, N5 } in second port set is stated, scrambling code is configured to nSCID=0；
When the number of data streams for a dispatching user facility is 6, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3, N4, N5, N6 } in second port set is stated, scrambling code is configured to nSCID=0；
When the number of data streams for a dispatching user facility is 7, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3, N4, N5, N6, N7 } in second port set is stated, scrambling code is configured to nSCID=0；
When the number of data streams for a dispatching user facility is 8, the DMRS port for user equipment distribution is institute
The port combination { N1, N2, N3, N4, N5, N6, N7, N8 } in second port set is stated, scrambling code is configured to nSCID=0.
For example, first port collection is combined into { 7,8,9,10 }, second port collection is combined into { 7,8,9,10,11,12,13,14 }, should
Digital representation DMRS port number in set, this kind of set expression method are equally applicable to other port collection in the embodiment of the present invention
It closes.
By taking above-mentioned first port set and second port set as an example, for low rank (such as rank-1 to rank-4),
Preferably, the DMRS port that can be used selection from port set { 7,8,9,10 }.If the DMRS port that can be dispatched can
With continuously can also be discontinuous, then the possible DMRS port combination selected from port set { 7,8,9,10 } can include:
It, then can be available there are four types of possible port combination if a dispatching user facility rank-1 data:
{7},{8},{9},{10}；
If a dispatching user facility rank-2 data, then have 6 kinds of possible port combinations available: { 7,8 },
{7,9},{7,10},{8,10},{9,10},{8,9}；
If a dispatching user facility rank-3 data, then have 4 kinds of possible ports available: { 7,8,9 }, 7,
9,10},{8,9,10},{7,8,10}；
If a dispatching user facility rank-4 data, then there is the combination of 1 middle port available: { 7,8,9,10 }.
As can be seen that if one shares 15 kinds when the number of data streams that a user equipment is scheduled is one of 1 to 4
The permutation and combination of orthogonal port is available.
By taking above-mentioned first port set and second port set as an example, for high rank (such as rank-5 to rank-8),
Preferably, the DMRS port that can be used selection from port set { 7,8,9,10,11,12,13,14 }, and can dispatch
DMRS port is continuous, then the possible DMRS port combination selected from port set { 7,8,9,10 } can include:
If a dispatching user facility rank-5 data, then port combination is { 7,8,9,10,11 }；
If a dispatching user facility rank-6 data, then port combination is { 7,8,9,10,11,12 }；
If a dispatching user facility rank-7 data, then port combination is { 7,8,9,10,11,12,13 }；
If a dispatching user facility rank-8 data, then port combination is { 7,8,9,10,11,12,13,14 }.
It is further preferred that one group of low rank (such as rank-1 SU-MIMO can be scheduled in rank-4) can also
It is transmitted with being scheduled in MU-MIMO, supports more than one nonopiate SCID.Remaining high rank (such as rank-5 to rank-
8) it may only dispatch and be transmitted in SU-MIMO, only support a SCID.This is because low rank is suitable for SU-MIMO or MU-
MIMO transmission, high rank are only applicable to SU-MIMO transmission, and the DMRS port distribution of low rank and high rank (continuously or do not connect
It is continuous), it can support four kinds of schemes:
Scheme 1: the low port rank is discontinuous, and the high port rank is discontinuous；
Scheme 2: the low port rank is discontinuous, and the high port rank is continuous；
Scheme 3: the low port rank is continuous, and the high port rank is discontinuous；
Scheme 4: the low port rank is continuous, and the high port rank is continuous.
Because high rank is transmitted corresponding to SU-MIMO, port continuous dispensing is more reasonable, so above scheme 2 and side
Case 4 is comparatively more reasonable.
Above-mentioned is in the case that the number of data streams of a dispatching user facility is 2,3 or 4, it is preferable that if a use
The downlink data of family equipment scheduling only includes a transmission block, then scrambling code corresponding to the DMRS port for user equipment distribution
It is configured to nSCID=0 and do not support nSCID=1.
In the embodiment of the present invention, in the descending control signaling include a control information field, for carry DMRS port,
The information such as scrambling code configuration.The bearing mode of these configuration informations can there are many selections, for example will distribute for user equipment
The information such as DMRS port number, SCID are carried in the control information field.
In some embodiments, in descending control signaling, the corresponding control information field of a user equipment may include port
Instructions field and scrambling code configuration instruction domain.
For low rank, the information bearing mode of port instructions field may include following two:
Mode 1: from the combination of all possible DMRS port, one particular port combination of notifying user equipment, the port
The amount of bits of instructions field is log2 (15)=4, and a kind of number of port combination is carried in a port instructions field；
Mode 2: using the bitmap (bit map) of 4 bit lengths, each bit corresponding ports set L1, L2,
L3, L4 } in a port, such as can port in corresponding ports set { 7,8,9,10 }, a bit is in bitmap
Bit=0 indicates that corresponding ports are not scheduled, and bit=1 indicates that corresponding ports are scheduled.
As extension, if the quantity of the SCID of configuration is greater than 1, can be scheduled in low rank, specifically can be used with
Lower two kinds of control information bearing schemes:
Scheme 1:SCID and DMRS are encoded separately, and DMRS indicates the end DMRS that field notice is distributed by the port of 4 bits
Mouthful, SCID can pass through Log2(N) scrambling code of a bit indicates field notice, and wherein N indicates the quantity of assignable SCID, this two
Information in kind information field is separately encoded, and signaling overheads so in total is 4+Log2(N) a bit；
Scheme 2:DMRS port assignment information and SCID configuration information combined coding.
For high rank, the bearing mode of DMRS port and scrambling code configuration information in descending control signaling can have more
Kind selection.For example, the advice method of above-mentioned low rank can be equally applicable to high rank, the DMRS port of user equipment is distributed to
Can be continuously be also possible to it is discontinuous.But for SU-MIMO (high rank) transmission, the contiguous port method of salary distribution
More rationally.The scheme that possible DMRS port and scrambling code configuration information carry in descending control signaling includes:
Scheme 1: high rank is indicated by downlink transfer stream instruction (transmission rank indicator, TRI)
The DMRS port and scrambling code distribution condition of user equipment.The DMRS port of TRI arbitrary for one, distribution are pre- corresponding to one group
The port first set, these ports can arrange in systems, be pre-configured with also by semi-static signaling to user equipment.Than
Such as, network can specify that in TRI=5, and corresponding DMRS port combines { 7,8,9,10,11 }.
Scheme 2: high rank user equipment is indicated by TRI and minimum (or highest) DMRS port number
DMRS port and scrambling code distribution condition, user equipment assumes that the port of scheduling is continuously, to derive corresponding port at this time.Than
Such as, the corresponding TRI=3 of a user equipment in descending control signaling, minimum port numbers are 8, then user equipment can be derived point
Its port of dispensing is { 8,9,10 }.
Table 1 shows the case where a kind of low rank and high rank is encoded together, and DMRS port and SCID are encoded jointly
(jointly encoded), coding result can be carried on the control information field of down control channel, a user equipment corresponding one
The control information field of a 6 bit.
Table 1
Serial number in table 1 indicates that control signaling number of state indexes, the serial number meaning in below table are identical with this, no longer superfluous
It states.
If requiring port continuous when DMRS port is distributed, can obtain on the basis of above-mentioned table 1 such as the following table 2.
Table 2
It is highly preferred that table 2 can be advanced optimized, specifically it is reflected as removing some unnecessary rows, such as:
In two-port distribution, the case where port combination { 8,9 }, can be removed.Distribute the possible application of port combination { 8,9 }
Only include some cases:
The first: 3 data flows of scheduling, wherein distribute port 7 for UE 1, distribute port combination { 8,9 } for UE 2；
Second: 4 data flows of scheduling, wherein distribute port 7 for UE 1, distribute port combination { 8,9 } for UE 2, be
UE 3 distributes port 10；
Both dispatch situations can be realized by other port assignment mode, such as:
In the case where dispatching 3 data flows, port combination { 7,8 } are distributed for UE 2, distribute port 9 for UE 1；
In the case where dispatching 4 data flows, port combination { 7,9 } are distributed for UE 2, distribute port 7 for UE 1, are UE 3
Distribute port 10.
It does not need, can not be supported in descending control signaling this in this way, the port assignment in table 2 combines { 8,9 }
Distribution reduces descending control signaling expense.Similar, port assignment combination { 8,9,10 } can also delete, and pass through port assignment
{ 7,8,9 } it realizes.The signaling chart accordingly modified can be as shown in table 3:
Table 3
Further, in conjunction with the quantity of transmission block (transmission block or two transmission blocks), be described below DMRS port,
SCID } and codeword enable/disabling combined coding mode.
Transmission block (enabled codeword) existing for one, at least rank-1 and rank-2 should be supported
's.For rank-1, one shares 4 DMRS ports it can be selected that such as { 7,8,9,10 }.For rank-2, can distribute
Whether DMRS port number of combinations depends on port can be continuous.If the DMRS port of rank-2 can be discontinuous, deposit
In 6 kinds of port combinations, such rank-1 and rank-2 mono- share 10 kinds of port assignments possibility.If the DMRS port of rank-2 must
It must continuously, then such rank-1 and rank-2 mono- share 7 kinds of port assignments possibility there are 3 kinds of port combinations.
It is that some can distribute to user equipment { DMRS port, SCID } are combined below, corresponding rank-1, rank-2,
Rank-3, rank-4 refer to following table 4, table 5a, table 5b, table 6a, table 6b, table 7.
Table 4
(SCID 0/1 is supported rank=1；Or only support SCID=0, remove the option of SCID=1)
Table 5a
Rank=2, (SCID 0/1 is supported discontinuous DMRS port；Or only support SCID=0, remove the choosing of SCID=1
)
Table 5b
Rank=2, (SCID 0/1 is supported continuous DMRS port；Or only support SCID=0, remove the choosing of SCID=1
)
Further, similar in table 5a and table 5b, port assignment { 8, the 9 } property of can choose is deleted.
Table 6a
Rank=3, (SCID 0/1 is supported discontinuous DMRS port；Or only support SCID=0, remove the choosing of SCID=1
)
Table 6b
Rank=3, (SCID 0/1 is supported continuous DMRS port；Or only support SCID=0, remove the choosing of SCID=1
)
Further, similar in table 6a and table 6b, port assignment { 8,9, the 10 } property of can choose is deleted.
Table 7
Rank=4, (SCID 0/1 is supported continuous DMRS port；Or only support SCID=0, remove the choosing of SCID=1
)
All or part of row in above-mentioned table 4 and/or table 5a/5b and/or table 6a/6b and/or table 7, can be together
Constitute the content of the control information field in descending control signaling, the feelings of a corresponding transmission block (one codeword enabled)
Condition.Example such as table 8a, table 8b.
Table 8a
Continuous DMRS port distribution (4-bits overhead)
Table 8b
Discontinuous DMRS port distribution (5-bits overhead)
The case where to two transmission blocks (enable codeword), it is some possible support schemes below, refers to table
9a to table 9d.
Table 9a
Rank-2, two CW enabled do not contact DMRS port distribution
Table 9b
Rank-2, two CW enabled, continuous DMRS port distribution
Table 9c
Rank-3, two CW enabled, continuous DMRS port distribution
Table 9d
Rank-3, two CW enabled, discontinuous DMRS port distribution
Rank-2 to the case where rank-8 is combined, then the control information of two enabled codeword can be with
Using following possible embodiment, table 10 is referred to.
Table 10: continuous DMRS port distribution
Whole in the above enable codeword and the corresponding table of two enable codeword is either
Part row, may be constructed a big table to carry out the coding of { DMRS, scrambling }.Descending control signaling is opened at this time
Pin is log2(N) a bit, { DMRS, SCID } may group when N=max (N1, N2), N1 are one enable codeword
The quantity of conjunction, the quantity that { DMRS, SCID } may be combined when N2 is two enable codeword.One example such as table 11a
Or the signaling overheads shown in table 11b, corresponding to 4 bits.That is, the corresponding control information length of field of a user equipment
For 4 bits, for carrying a control signaling number of state indexes, a control signaling number of state indexes identifies a kind of DMRS port and matches
It sets, the combination of scrambling code configuration and number of data streams.
Table 11a: continuous DMRS port distribution, 4-bit overhead
Table 11b: continuous DMRS port distribution, 4-bit overhead
The implementation of another possibility such as table 11c.Here from being eliminated in table 11b under one enable codeword
Some scheduling combination the case where (such as 3,4layer corresponds to SCID=1) in face.Reason for this is that one enabled
In codeword rank >=3MU-MIMO scene correspond only to rank > 5SU-MIMO after the failed transmission from pass scene
(HARQ retransmission).If system does not need the MU-MIMO of retransmission scene, then downlink control is believed
Order does not need to support these dispatch situations.
Table 11c:4-bit overhead
Further, some port combination distribution conditions, such as port assignment combination can also be removed on the basis of table 11c
{ 8,9 } obtain table 11d.
Table 11d:4-bit overhead
It include the feelings of a transmission block or two transport block transmissions for downlink data in the above embodiment of the present invention
Condition, by the various combinations of DMRS port distribution and scrambling code configuration, it can be achieved that the transmitting and scheduling of most 8 flow datas.
Based on the same technical idea, the embodiment of the invention also provides a kind of dispatching device, which may be implemented this
The above-mentioned scheduling flow of inventive embodiments.
It referring to fig. 2, is the structural schematic diagram of dispatching device provided in an embodiment of the present invention, the device can include: determine mould
Block 201, sending module 202, in which:
Determining module 201, for determining that descending control signaling, the downlink data include according to downlink data to be transmitted
One or two transmission block；
Sending module 202, for sending the descending control signaling, the descending control signaling is used to indicate the downlink
The configuration of the scrambling code of the corresponding DMRS port of data and each DMRS port, a DMRS port correspond in the downlink data
One data flow；Wherein, when the number of data streams for a dispatching user facility is one of 1 to 4, the corresponding end DMRS
There are two types of selections for the scrambling code configuration of mouth, corresponding when the number of data streams for a dispatching user facility is one of 5 to 8
DMRS port scrambling code be configured with a kind of selection.
Preferably, when the number of data streams for a dispatching user facility is one of 1 to 4, for the user equipment
The DMRS port of distribution is one group of port in first port set, and the first port set expression is { N1, N2, N3, N4 }；
When the number of data streams for a dispatching user facility is one of 5 to 8, the DMRS port for user equipment distribution is
One group of port in second port set, the second port set expression are { N1, N2, N3, N4, N5, N6, N7, N8 }；Its
In, N1 to N8 respectively indicates a DMRS port.
It is further preferred that when the number of data streams for a dispatching user facility is 1, for user equipment distribution
DMRS port is the either port in the first port set.
Preferably, when the number of data streams for a dispatching user facility is 2, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2 } or port combination { N3, N4 } in the first port set, and scrambling code is configured to nSCID=0 or
nSCID=1, wherein nSCIDIndicate scrambler sequence mark；Alternatively, when the number of data streams for a dispatching user facility is 2,
DMRS port for user equipment distribution be port combination { N1, N2 } in the first port set or port combination N3,
N4 } or port combination { N2, N3 }, scrambling code is configured to nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
Preferably, when the number of data streams for a dispatching user facility is 3, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2, N3 } in the first port set, and scrambling code is configured to nSCID=0 or nSCID=1, wherein
nSCIDIndicate scrambler sequence mark.
Preferably, when the number of data streams for a dispatching user facility is 4, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2, N3, N4 } in the first port set, and scrambling code is configured to nSCID=0 or nSCID=1, wherein
nSCIDIndicate scrambler sequence mark.
Preferably, when the downlink data for a dispatching user facility only includes a transmission block, for the user equipment
Scrambling code corresponding to the DMRS port of distribution is configured to nSCID=0 and do not support nSCID=1.
Preferably, the port in the first port set is successively are as follows: port 7 to port 10, the second port set
In port be followed successively by port 7 to port 14；Alternatively, the port in the first port set is successively are as follows: port 7, port 8,
Port 11, port 13, the port in the second port set be followed successively by port 7, port 8, port 11, port 13, port 9,
Port 10, port 12, port 14.
Based on the same technical idea, the embodiment of the invention also provides a kind of base station, which may be implemented the present invention
The above-mentioned scheduling flow of embodiment.
It is the structural schematic diagram of base station provided in an embodiment of the present invention, the base station referring to Fig. 3 can include: processor 301,
Memory 302, transceiver 303 and bus interface.
Processor 301, which is responsible for management bus architecture and common processing, memory 302, can store processor 301 and is holding
Used data when row operation.Transceiver 303 is for sending and receiving data under the control of processor 301.
Bus architecture may include the bus and bridge of any number of interconnection, specifically represented by processor 301 one or
The various circuits for the memory that multiple processors and memory 302 represent link together.Bus architecture can also will be such as outer
Various other circuits of peripheral equipment, voltage-stablizer and management circuit or the like link together, these are all that this field institute is public
Know, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 303 can be multiple members
Part includes transmitter and transceiver, provides the unit for communicating over a transmission medium with various other devices.Processor
301 are responsible for management bus architecture and common processing, and memory 302 can store processor 301 and be used when executing operation
Data.
The scheduling flow for the user equipment side that the embodiment of the present invention discloses, can be applied in processor 301, or by
Device 301 is managed to realize.During realization, each step of data transmission stream journey can pass through the integrated of the hardware in processor 301
The instruction of logic circuit or software form is completed.Processor 301 can be general processor, digital signal processor, dedicated
It is integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete
Hardware component may be implemented or execute disclosed each method, step and logic diagram in the embodiment of the present invention.General procedure
Device can be microprocessor or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be with
Be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.Software
Module can be located at random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable storage
In the storage medium of this fields such as device, register maturation.The storage medium is located at memory 302, and processor 301 reads memory
Information in 302, in conjunction with the step of its hardware completion scheduling flow.
Specifically, processor 301 execute following process for reading the program in memory 302:
Determine that descending control signaling, the downlink data include one or two transmission according to downlink data to be transmitted
Block；
The descending control signaling is sent, the descending control signaling is used to indicate the corresponding end DMRS of the downlink data
Mouth and the configuration of the scrambling code of each DMRS port, a DMRS port correspond to a data flow in the downlink data；Wherein,
When the number of data streams for a dispatching user facility is one of 1 to 4, the scrambling code of corresponding DMRS port is configured with two
Kind selection, when the number of data streams for a dispatching user facility is one of 5 to 8, the scrambling code of corresponding DMRS port
Configured with a kind of selection.
Preferably, when the number of data streams for a dispatching user facility is one of 1 to 4, for the user equipment
The DMRS port of distribution is one group of port in first port set, and the first port set expression is { N1, N2, N3, N4 }；
When the number of data streams for a dispatching user facility is one of 5 to 8, the DMRS port for user equipment distribution is
One group of port in second port set, the second port set expression are { N1, N2, N3, N4, N5, N6, N7, N8 }；Its
In, N1 to N8 respectively indicates a DMRS port.
It is further preferred that when the number of data streams for a dispatching user facility is 1, for user equipment distribution
DMRS port is the either port in the first port set.
Preferably, when the number of data streams for a dispatching user facility is 2, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2 } or port combination { N3, N4 } in the first port set, and scrambling code is configured to nSCID=0 or
nSCID=1, wherein nSCIDIndicate scrambler sequence mark；Alternatively, when the number of data streams for a dispatching user facility is 2,
DMRS port for user equipment distribution be port combination { N1, N2 } in the first port set or port combination N3,
N4 } or port combination { N2, N3 }, scrambling code is configured to nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
Preferably, when the number of data streams for a dispatching user facility is 3, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2, N3 } in the first port set, and scrambling code is configured to nSCID=0 or nSCID=1, wherein
nSCIDIndicate scrambler sequence mark.
Preferably, when the number of data streams for a dispatching user facility is 4, for the end DMRS of user equipment distribution
Mouth is the port combination { N1, N2, N3, N4 } in the first port set, and scrambling code is configured to nSCID=0 or nSCID=1, wherein
nSCIDIndicate scrambler sequence mark.
Preferably, when the downlink data for a dispatching user facility only includes a transmission block, for the user equipment
Scrambling code corresponding to the DMRS port of distribution is configured to nSCID=0 and do not support nSCID=1.
Preferably, the port in the first port set is successively are as follows: port 7 to port 10, the second port set
In port be followed successively by port 7 to port 14；Alternatively, the port in the first port set is successively are as follows: port 7, port 8,
Port 11, port 13, the port in the second port set be followed successively by port 7, port 8, port 11, port 13, port 9,
Port 10, port 12, port 14.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (17)
1. a kind of dispatching method characterized by comprising
Determine that descending control signaling, the downlink data include one or two transmission block according to downlink data to be transmitted；
The descending control signaling is sent, the descending control signaling is used to indicate the corresponding demodulation reference letter of the downlink data
The configuration of the scrambling code of number DMRS port and each DMRS port, a DMRS port correspond to a data in the downlink data
Stream；Wherein, when the number of data streams for a dispatching user facility is one of 1 to 4, the scrambling code of corresponding DMRS port
There are two types of selections for configuration, when the number of data streams for a dispatching user facility is one of 5 to 8, the corresponding end DMRS
The scrambling code of mouth is configured with a kind of selection.
2. the method as described in claim 1, which is characterized in that
When the number of data streams for a dispatching user facility is one of 1 to 4, for the end DMRS of user equipment distribution
Mouth is one group of port in first port set, and the first port set expression is { N1, N2, N3, N4 }；
When the number of data streams for a dispatching user facility is one of 5 to 8, for the end DMRS of user equipment distribution
Mouth is one group of port in second port set, and the second port set expression is { N1, N2, N3, N4, N5, N6, N7, N8 }；
Wherein, N1 to N8 is port-mark, and corresponding 8 different positive integers respectively indicate a DMRS port.
3. method according to claim 2, which is characterized in that when the number of data streams for a dispatching user facility is 1,
DMRS port for user equipment distribution is the either port in the first port set.
4. method according to claim 2, which is characterized in that
When the number of data streams for a dispatching user facility is 2, the DMRS port for user equipment distribution is described the
Port combination { N1, N2 } or port combination { N3, N4 } in Single port set, scrambling code is configured to nSCID=0 or nSCID=1,
In, nSCIDIndicate scrambler sequence mark；Alternatively,
When the number of data streams for a dispatching user facility is 2, the DMRS port for user equipment distribution is described the
Port combination { N1, N2 } or port combination { N3, N4 } or port combination { N2, N3 } in Single port set, scrambling code is configured to
nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
5. method according to claim 2, which is characterized in that when the number of data streams for a dispatching user facility is 3,
DMRS port for user equipment distribution is the port combination { N1, N2, N3 } in the first port set, and scrambling code is configured to
nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
6. method according to claim 2, which is characterized in that when the number of data streams for a dispatching user facility is 4,
DMRS port for user equipment distribution is the port combination { N1, N2, N3, N4 } in the first port set, and scrambling code is matched
It is set to nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
7. the method as described in any one of claim 4 to 6, which is characterized in that when for the downlink of a dispatching user facility
When data only include a transmission block, scrambling code corresponding to the DMRS port for user equipment distribution is configured to nSCID=0 and
Do not support nSCID=1.
8. method according to claim 2, which is characterized in that the port in the first port set is successively are as follows: port 7 to
Port 10, the port in the second port set are followed successively by port 7 to port 14；Alternatively,
Port in the first port set is successively are as follows: port 7, port 8, port 11, port 13, the second port set
In port be followed successively by port 7, port 8, port 11, port 13, port 9, port 10, port 12, port 14.
9. the method as described in any one of claim 1 to 6,8, which is characterized in that include 4 ratios in the descending control signaling
The control information field of bit length, the information field are used to carry 14 control signaling state sequences in the case of a transmission of data blocks
One in 12 control signaling number of state indexes in the case of one in number, or two transmission of data blocks of carrying, each control
Signaling status serial number processed identifies the combination of a kind of configuration of DMRS port, scrambling code configuration and number of data streams；Alternatively,
It include the control information field of 4 bit lengths in the descending control signaling, the information field is for carrying a data block
12 controls in the case of one in 11 control signaling number of state indexes in the case of transmission, or two transmission of data blocks of carrying
One in signaling status serial number processed, each control signaling number of state indexes identifies a kind of configuration of DMRS port, scrambling code configuration sum number
According to the combination of stream quantity.
10. a kind of dispatching device characterized by comprising
Determining module, for determining descending control signaling according to downlink data to be transmitted, the downlink data include one or
Two transmission blocks；
Sending module, for sending the descending control signaling, the descending control signaling is used to indicate the downlink data pair
The scrambling code of the demodulated reference signal DMRS port and each DMRS port answered configures, and a DMRS port corresponds to the lower line number
A data flow in；Wherein, corresponding when the number of data streams for a dispatching user facility is one of 1 to 4
There are two types of selections for the scrambling code configuration of DMRS port, when the number of data streams for a dispatching user facility is one of 5 to 8
When, the scrambling code of corresponding DMRS port is configured with a kind of selection.
11. device as claimed in claim 10, which is characterized in that
When the number of data streams for a dispatching user facility is one of 1 to 4, for the end DMRS of user equipment distribution
Mouth is one group of port in first port set, and the first port set expression is { N1, N2, N3, N4 }；
When the number of data streams for a dispatching user facility is one of 5 to 8, for the end DMRS of user equipment distribution
Mouth is one group of port in second port set, and the second port set expression is { N1, N2, N3, N4, N5, N6, N7, N8 }；
Wherein, N1 to N8 respectively indicates a DMRS port.
12. device as claimed in claim 11, which is characterized in that when the number of data streams for a dispatching user facility is 1
When, the DMRS port for user equipment distribution is the either port in the first port set.
13. device as claimed in claim 11, which is characterized in that
When the number of data streams for a dispatching user facility is 2, the DMRS port for user equipment distribution is described the
Port combination { N1, N2 } or port combination { N3, N4 } in Single port set, scrambling code is configured to nSCID=0 or nSCID=1,
In, nSCIDIndicate scrambler sequence mark；Alternatively,
When the number of data streams for a dispatching user facility is 2, the DMRS port for user equipment distribution is described the
Port combination { N1, N2 } or port combination { N3, N4 } or port combination { N2, N3 } in Single port set, scrambling code is configured to
nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
14. device as claimed in claim 11, which is characterized in that when the number of data streams for a dispatching user facility is 3
When, the DMRS port for user equipment distribution is the port combination { N1, N2, N3 } in the first port set, and scrambling code is matched
It is set to nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
15. device as claimed in claim 11, which is characterized in that when the number of data streams for a dispatching user facility is 4
When, the DMRS port for user equipment distribution is the port combination { N1, N2, N3, N4 } in the first port set, scrambling code
It is configured to nSCID=0 or nSCID=1, wherein nSCIDIndicate scrambler sequence mark.
16. the device as described in any one of claim 13 to 15, which is characterized in that under for a dispatching user facility
When row data only include a transmission block, scrambling code corresponding to the DMRS port for user equipment distribution is configured to nSCID=0
And do not support nSCID=1.
17. device as claimed in claim 13, which is characterized in that the port in the first port set is successively are as follows: port 7
To port 10, the port in the second port set is followed successively by port 7 to port 14；Alternatively,
Port in the first port set is successively are as follows: port 7, port 8, port 11, port 13, the second port set
In port be followed successively by port 7, port 8, port 11, port 13, port 9, port 10, port 12, port 14.
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| CN108631998B (en) * | 2017-03-24 | 2020-07-28 | 华为技术有限公司 | Reference signal mapping method, network equipment and terminal equipment |
| CN109150433B (en) * | 2017-06-16 | 2022-02-01 | 展讯通信（上海）有限公司 | DMRS port scheduling and receiving setting method, base station, terminal and readable medium |
| CN108111207B (en) * | 2017-11-10 | 2021-04-23 | 北京邮电大学 | Information transmission method and device |
| JP7040615B2 (en) * | 2017-11-13 | 2022-03-23 | 日本電気株式会社 | Terminals, network devices, and methods |
| CN110620643B (en) * | 2018-06-20 | 2022-05-31 | 中兴通讯股份有限公司 | DMRS pilot frequency scrambling code configuration information distribution method, device, equipment and storage medium |
| EP3633904A4 (en) | 2018-06-22 | 2020-08-05 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for determining size of demodulation reference signal indication information, device, and storage medium |
| CN110855330B (en) | 2018-08-20 | 2022-05-03 | 大唐移动通信设备有限公司 | Transmission method and device |
| CN111801906B (en) * | 2018-10-10 | 2022-01-25 | Oppo广东移动通信有限公司 | Wireless communication method and terminal device |
| CN111193581B (en) * | 2018-11-14 | 2021-12-03 | 华为技术有限公司 | Method for transmitting and receiving physical downlink control channel and communication device |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210531 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |