CN106488562A - For transmitting device and the system of multiuser MIMO control information - Google Patents
For transmitting device and the system of multiuser MIMO control information Download PDFInfo
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- CN106488562A CN106488562A CN201510549088.7A CN201510549088A CN106488562A CN 106488562 A CN106488562 A CN 106488562A CN 201510549088 A CN201510549088 A CN 201510549088A CN 106488562 A CN106488562 A CN 106488562A
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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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes the device of the control information of the multiuser MIMO for sending supercomposed coding, and dispensing device includes：Transmitting element, for sending notice signaling to the UE at least two user equipment (UE)s being overlapped coding, carries the specific identification information of other UE in described at least two UE in described notice signaling；Described transmitting element is additionally operable to send Downlink Control Information DCI to described at least two UE, the at least Data scheduling information of this UE is comprised, the specific identifier that cyclic redundancy check information CRC of the DCI of described each UE is respectively adopted each UE is scrambled in the DCI of described each UE.Present invention achieves application in LTE system for the supercomposed coding, the systematic function of existing MU-MIMO can be lifted, and less to prior art and protocol impact.
Description
Technical field
The present invention relates to wireless communication field, more particularly, to transmission multiuser MIMO control information
Device and system.
Background technology
With the further evolution of LTE, the performance of MU-MIMO is still had large improvement space.Even if
Precoding of making a start is non-fully orthogonal, simultaneously from making a start and receiving end carries out combined optimization, such as using adaptive point
Join transmit power and CW-IC receiver, comprise non-orthogonal multiple and access NOMA, also can improve
MUMIMO systematic function.A kind of method is based on supercomposed coding (Superposition Coding, SC)
Technology is a kind of hierarchical coding modulation technique, its basic thought be system according to different target transmission speed,
Channel status is quantified as the grade of different channels quality, each channel quantitative grade corresponds to a determination
Target transmission speed.The higher referred to as nearly user of the corresponding transfer rate of matter measured channel quantitative grade, matter
The relatively low referred to as remote user of the corresponding transfer rate of channel quantitative grade of amount difference.Two groups of signals are pressed respectively difference
Targeted rate independently encoded, and be mapped on corresponding planisphere, then again it folded
Plus.When remote user receives, nearly user data is considered as noise, is directly processed.Nearly user is first by oneself
Signal is considered as the remote user data of noise solution, more remote subscriber signal is removed from receipt signal, to solve oneself number
According to available symbol level is other to disturb elimination or the interference of codeword level to eliminate.
PDCCH carries up-downgoing control information (DCI), and the PDCCH information of different user is passed through to correspond to
RNTI data separation, that is, the CRC of its DCI scrambled by RNTI.
The SI (RP-150496) of the new project verification of 3GPP at present, supercomposed coding is used for improving LTE system by research
Descending multi-user MIMO performance in system.Because nearly user needs to solve remote user data, so nearly user
The C-RNTI of remote user and Downlink Control Information known to needs, such as block length, modulation system, HARQ process
Etc. information, but how to obtain above- mentioned information, thus nearly user carries out SIC operation and also do not discuss.
Content of the invention
For the problems referred to above, the present invention proposes a kind of control of the multiuser MIMO for sending supercomposed coding
The device of information processed, including：Transmitting element, at least two user equipmenies being overlapped coding
A UE in UE sends notice signaling, carries its in described at least two UE in described notice signaling
The specific identification information of his UE；Described transmitting element is additionally operable to send descending control to described at least two UE
Information DCI processed, comprises at least Data scheduling information of this UE in the DCI of described each UE, described each
The specific identifier that cyclic redundancy check information CRC of the DCI of UE is respectively adopted each UE is scrambled.
Further, described transmitting element includes：
First transmission subelement, for sending radio resource control RRC signaling, institute to a described UE
State the specific identifier carrying other UE described in RRC signaling；Or,
Second transmission subelement, for sending RRC signaling to a described UE, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, to a described UE
Send DCI, in described DCI, comprise the index information of the specific identifier of other UE described.
Further, described transmitting element be sent in the DCI of a described UE also include described at least two
The power ratio information of individual UE.
Further, described power ratio information indicates that nearly user is accounted for the power ratio of remote user, nearly user
The ratio of general power or remote user account for the ratio of general power；And/or described power ratio information takies 1 bit or 2
Bit.
Further, described device further includes：Scheduling unit, is carried out for being determined according to dispatching algorithm
At least two user equipment (UE)s of supercomposed coding, specifically include：
First scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
The identical UE in direction is as at least two UE of the described supercomposed coding carrying out；Or,
Second scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
Direction identical and make the maximum UE of metric of debugging algorithm as the described supercomposed coding carrying out at least
Two UE.
Based on identical design, the present invention also proposes one kind and is used for receiving supercomposed coding multiuser MIMO control
The device of information processed, including：Receiving unit, for receiving the notice signaling of base station transmission, described notice letter
The specific identification information of other UE at least two user equipment (UE)s carrying out supercomposed coding is carried in order；
Described receiving unit is also used for the specific identifier of other UE described and the specific identifier blind check thing of this UE
Reason down control channel PDCCH, receives each UE Downlink Control Information DCI that base station sends, and obtains institute
State the Data scheduling information of at least each UE oneself comprising in each DCI.
Further, described receiving unit includes：
First receiving subelement, for receiving the radio resource control RRC signaling that described base station sends, obtains
Take the specific identifier of other UE described carrying in described RRC signaling；Or,
Second receiving subelement, for receiving the RRC signaling that described base station sends, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, using the spy of this UE
The DCI receiving the transmission of described base station is known in calibration, obtains the specific of other UE described comprising in described DCI
The index information of mark, thus finally obtain the specific identifier of other UE described.
Further, described in also including in the DCI that described receiving unit is received using this UE specific identifier extremely
The power ratio information of few two UE.
Further, described power ratio information indicates that nearly user is accounted for the power ratio of remote user, nearly user
The ratio of general power or remote user account for the ratio of general power；And/or described power ratio information takies 1 bit or 2
Bit.
Further, described device further includes：
Demodulating unit, for the specific identifier data schedule information using other UE described, receives descending
The user data of other UE described on Physical Downlink Shared Channel PDSCH；From total receipt signal
Except the user data of other UE described, obtain the user data of this UE.
Finally, the present invention also propose a kind of for transmit supercomposed coding multiuser MIMO control information be
System, described system includes base station and at least two user's set UE, and described base station includes as above any one
Described device, described UE includes the as above device described in any one.
The present invention makes nearly user can obtain the Downlink Control Information of remote user, carries out interference elimination last solution and obtains
The data message of oneself, it is achieved that application in LTE system for the supercomposed coding, can be lifted existing
The systematic function of MU-MIMO, and less to prior art and protocol impact.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below will be real to the present invention
The technical scheme applied in example is clearly and completely described.
One embodiment of the present of invention proposes a kind of control of the multiuser MIMO for sending supercomposed coding
The device of information, including：
Transmitting element, for sending out to the UE at least two user equipment (UE)s being overlapped coding
Send notice signaling, in described notice signaling, carry the specific identifier of other UE in described at least two UE
Information；
Described transmitting element is additionally operable to send Downlink Control Information DCI to described at least two UE, described each
At least Data scheduling information of this UE, the cyclic redundancy of the DCI of described each UE is comprised in the DCI of UE
The specific identifier that check information CRC is respectively adopted each UE is scrambled.
In one alternate embodiment, transmitting element includes：
First transmission subelement, for sending radio resource control RRC signaling, institute to a described UE
State the specific identifier carrying other UE described in RRC signaling；Or,
Second transmission subelement, for sending RRC signaling to a described UE, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, to a described UE
Send DCI, in described DCI, comprise the index information of the specific identifier of other UE described.
In one alternate embodiment, transmitting element be sent in the DCI of a described UE also include described
The power ratio information of at least two UE.
In one alternate embodiment, power ratio information indicates the power ratio of nearly user and remote user, near
User accounts for the ratio of general power or remote user accounts for the ratio of general power；And/or described power ratio information takies 1
Bit or 2 bits.
In one alternate embodiment, specific identifier includes：C-RNTI or SPS-RNTI.
In one alternate embodiment, device further includes：
Scheduling unit, at least two user equipment (UE)s being overlapped encoding are determined according to dispatching algorithm,
Specifically include：
First scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
The identical UE in direction is as at least two UE of the described supercomposed coding carrying out；Or,
Second scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
Direction identical and make the maximum UE of metric of debugging algorithm as the described supercomposed coding carrying out at least
Two UE.
Based on identical design, one embodiment of the present of invention also propose one kind be used for receiving supercomposed coding multiplex
The device of family MIMO control information, including：
Receiving unit, for receiving the notice signaling of base station transmission, carries in described notice signaling and is overlapped
The specific identification information of other UE at least two user equipment (UE)s of coding；
The specific identifier that described receiving unit is also used for other UE described is blind with the specific identifier of this UE
Inspection physical downlink control channel PDCCH, receives each UE Downlink Control Information DCI that base station sends, obtains
Take the Data scheduling information of at least each UE oneself comprising in described each DCI.
In one alternate embodiment, receiving unit includes：
First receiving subelement, for receiving the radio resource control RRC signaling that described base station sends, obtains
Take the specific identifier of other UE described carrying in described RRC signaling；Or,
Second receiving subelement, for receiving the RRC signaling that described base station sends, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, using the spy of this UE
The DCI receiving the transmission of described base station is known in calibration, obtains the specific of other UE described comprising in described DCI
The index information of mark, thus finally obtain the specific identifier of other UE described.
In one alternate embodiment, also include in the DCI that receiving unit is received using this UE specific identifier
The power ratio information of described at least two UE.
In one alternate embodiment, power ratio information indicates the power ratio of nearly user and remote user, near
User accounts for the ratio of general power or remote user accounts for the ratio of general power；And/or described power ratio information takies 1
Bit or 2 bits.
In one alternate embodiment, device further includes：
Demodulating unit, for the specific identifier data schedule information using other UE described, receives descending
The user data of other UE described on Physical Downlink Shared Channel PDSCH；From total receipt signal
Except the user data of other UE described, obtain the user data of this UE.
In one alternate embodiment, specific identifier includes：C-RNTI or SPS-RNTI.
One embodiment of the present of invention also proposes one kind and is used for transmitting supercomposed coding multiuser MIMO control letter
The system of breath, this system includes base station and at least two user's set UE, and described base station includes as above arbitrary
Dispensing device described in embodiment, described UE includes as above arbitrary described reception device.
The present invention makes nearly user can obtain the Downlink Control Information of remote user, carries out interference elimination last solution and obtains
The data message of oneself, it is achieved that application in LTE system for the supercomposed coding, can be lifted existing
The systematic function of MU-MIMO, and less to prior art and protocol impact.
Embodiment 1
In the present embodiment, remote user C-RNTI and Downlink Control Information are handed down to nearly user by base station, closely
User first solves remote subscriber control information, then utilizes interference cancellation techniques, obtains the nearly user PDSCH of oneself
Information.
Base station side：
The nearly user and remote user being overlapped encoding is determined according to dispatching algorithm, determines that criterion includes：Wave beam
Shape identical with precoding direction, condition can also be increased：Make the metric of debugging algorithm maximum.
Send the notice signaling carrying remote user C-RNTI to nearly user, notice signaling can be RRC letter
Make (referring to embodiment 2), can also be RRC signaling+DCI (referring to embodiment 3)；
Send Downlink Control Information DCI, in the DCI of each user, include at least the data dispatch letter of this user
Breath, also comprises the power ratio information (referring to embodiment 4) of remote user and nearly user in the DCI of this user.
UE side：
Receive the notice signaling carrying remote user C-RNTI；
Using the C-RNTI blind check PDCCH of remote user C-RTNI and this UE, comprise in acquisition DCI
Data scheduling information；
Using remote user's C-RNTI data schedule information, receive remote user data, from total receipt signal
Remove remote user data, obtain this user data.
Example 2：Issue and receive remote user C-RNTI by RRC signaling
To the UE being in connected state, eNB is determined by its channel condition information can be using supercomposed coding pairing
Remote user, the criterion of judgement is：Beam shaping/precoding direction is identical, and makes the metric of debugging algorithm
(as total downstream rate) maximum user is as the remote user of this UE；
UE connects reallocation message by RRC and obtains the remote user C-RNTI that base station issues, that is, in RRC even
Connect and in reallocation message, increase remote user's C-RNTI field, length is 16bit；
After UE obtains remote user C-RNTI, can be used for solving remote user data, thus from total receipt signal
Middle remove the interference of remote user data, obtain the descending PDSCH of this UE.
Embodiment 3：Base station connects reallocation message by RRC and notifies one group remote user's C-RNTI information list
To nearly user, the DCI then being carried by PDCCH dynamically issues the remote user C-RNTI of current superposition
Index.Specifically include：
To the UE being in connected state, eNB is joined using supercomposed coding by the decision of its channel condition information is some
To remote user's group；Judge criterion be：Select beam shaping/precoding direction identical user as this
Remote user's candidate set of UE.
UE connects, by RRC, the C-RNTI list that reallocation message obtains remote user's candidate set, that is, in RRC
Connect and in reallocation message, increase by one group remote user's C-RNTI list, the length of each C-RNTI is 16bit.
After UE obtains remote user's C-RNTI list, each downlink data dispatching eNB all can pass through
PDCCH therefrom indicates that one or more remote user C-RNTI being overlapped encoding with this UE index,
UE obtains the C-RNTI of remote user according to index from list；UE can use the remote user of this C-RNTI blind check
Downlink Control Information so that demodulate remote user data, after interference elimination treatment, finally give this
The descending PDSCH of UE.
Example 4：The form of power ratio field can be following any one.
The ratio of nearly user and remote user power
When being represented with 1bit
| Index | The ratio of nearly user and remote user power |
| 0 | 1/9 |
| 1 | 3/17 |
When being represented with 2bit
| Index | The ratio of nearly user and remote user power |
| 0 | 1/19 |
| 1 | 1/9 |
| 2 | 3/17 |
| 3 | 1/4 |
Nearly user accounts for the ratio of general power
When being represented with 1bit
| Index | Nearly user accounts for the ratio of general power |
| 0 | 1/10 |
| 1 | 3/20 |
When being represented with 2bit
| Index | Nearly user accounts for the ratio of general power |
| 0 | 1/20 |
| 1 | 1/10 |
| 2 | 3/20 |
| 3 | 1/5 |
Can also be：Remote user accounts for the ratio of general power.
Finally it should be noted that：Above example is only in order to illustrating technical scheme, rather than it is limited
System；Although being described in detail to the present invention with reference to the foregoing embodiments, those of ordinary skill in the art
It should be understood that：It still can be modified to the technical scheme described in foregoing embodiments, or to it
Middle some technical characteristics carry out equivalent；And these modifications or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a kind of device of the control information of the multiuser MIMO for sending supercomposed coding, its feature exists
In, including：
Transmitting element, for sending out to the UE at least two user equipment (UE)s being overlapped coding
Send notice signaling, in described notice signaling, carry the specific identifier of other UE in described at least two UE
Information；
Described transmitting element is additionally operable to send Downlink Control Information DCI to described at least two UE, described each
At least Data scheduling information of this UE, the cyclic redundancy of the DCI of described each UE is comprised in the DCI of UE
The specific identifier that check information CRC is respectively adopted each UE is scrambled.
2. device according to claim 1 is it is characterised in that described transmitting element includes：
First transmission subelement, for sending radio resource control RRC signaling, institute to a described UE
State the specific identifier carrying other UE described in RRC signaling；Or,
Second transmission subelement, for sending RRC signaling to a described UE, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, to a described UE
Send DCI, in described DCI, comprise the index information of the specific identifier of other UE described.
3. device according to claim 1 it is characterised in that described transmitting element be sent to described
The power ratio information of described at least two UE is also included in the DCI of the first UE.
4. device according to claim 3 is it is characterised in that the instruction of described power ratio information is near
The power ratio of user and remote user, nearly user account for the ratio of general power or remote user accounts for the ratio of general power；With
/ or described power ratio information occupancy 1 bit or 2 bits.
5. device according to claim 1 is it is characterised in that described device further includes：
Scheduling unit, at least two user equipment (UE)s being overlapped encoding are determined according to dispatching algorithm,
Specifically include：
First scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
The identical UE in direction is as at least two UE of the described supercomposed coding carrying out；Or,
Second scheduling subelement, for the channel condition information according to UE, selects beam shaping and precoding
Direction identical and make the maximum UE of metric of debugging algorithm as the described supercomposed coding carrying out at least
Two UE.
6. a kind of device for receiving supercomposed coding multiuser MIMO control information it is characterised in that
Including：
Receiving unit, for receiving the notice signaling of base station transmission, carries in described notice signaling and is overlapped
The specific identification information of other UE at least two user equipment (UE)s of coding；
The specific identifier that described receiving unit is also used for other UE described is blind with the specific identifier of this UE
Inspection physical downlink control channel PDCCH, receives each UE Downlink Control Information DCI that base station sends, obtains
Take the Data scheduling information of at least each UE oneself comprising in described each DCI.
7. device according to claim 6 is it is characterised in that described receiving unit includes：
First receiving subelement, for receiving the radio resource control RRC signaling that described base station sends, obtains
Take the specific identifier of other UE described carrying in described RRC signaling；Or,
Second receiving subelement, for receiving the RRC signaling that described base station sends, in described RRC signaling
Carrying package contains one group of specific identifier list of the specific identification information of other UE described, using the spy of this UE
The DCI receiving the transmission of described base station is known in calibration, obtains the specific of other UE described comprising in described DCI
The index information of mark, thus finally obtain the specific identifier of other UE described.
8. device according to claim 6 is it is characterised in that described receiving unit uses this UE
The power ratio information of described at least two UE is also included in the DCI that specific identifier receives.
9. device according to claim 8 is it is characterised in that the instruction of described power ratio information is near
The power ratio of user and remote user, nearly user account for the ratio of general power or remote user accounts for the ratio of general power；With
/ or described power ratio information occupancy 1 bit or 2 bits.
10. device according to claim 6 is it is characterised in that described device further includes：
Demodulating unit, for the specific identifier data schedule information using other UE described, receives descending
The user data of other UE described on Physical Downlink Shared Channel PDSCH；From total receipt signal
Except the user data of other UE described, obtain the user data of this UE.
A kind of 11. systems for transmitting supercomposed coding multiuser MIMO control information it is characterised in that
Described system includes base station and at least two user's set UE, and described base station is included if claim 1 is to power
Profit requires the device described in any one in 5, and described UE is included as claim 6 to claim 10
Device described in middle any one.
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| CN201510549088.7A CN106488562A (en) | 2015-08-31 | 2015-08-31 | For transmitting device and the system of multiuser MIMO control information |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510549088.7A CN106488562A (en) | 2015-08-31 | 2015-08-31 | For transmitting device and the system of multiuser MIMO control information |
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| CN102301819A (en) * | 2008-11-21 | 2011-12-28 | 皮恩-汉·霍 | System, Method, And Computer Program For Superposition Coded Multicast With A Single Modulation Scheme |
| CN103095444A (en) * | 2011-11-07 | 2013-05-08 | 上海贝尔股份有限公司 | Method and equipment sending and receiving downlink control information based on multi-user multi-input multi-output (MIMO) transmission |
| WO2014179953A1 (en) * | 2013-05-08 | 2014-11-13 | 华为技术有限公司 | Superposition coding method, apparatus and system |
| WO2015024227A1 (en) * | 2013-08-22 | 2015-02-26 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for performing downlink mu-mimo transmission |
-
2015
- 2015-08-31 CN CN201510549088.7A patent/CN106488562A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301819A (en) * | 2008-11-21 | 2011-12-28 | 皮恩-汉·霍 | System, Method, And Computer Program For Superposition Coded Multicast With A Single Modulation Scheme |
| CN103095444A (en) * | 2011-11-07 | 2013-05-08 | 上海贝尔股份有限公司 | Method and equipment sending and receiving downlink control information based on multi-user multi-input multi-output (MIMO) transmission |
| WO2014179953A1 (en) * | 2013-05-08 | 2014-11-13 | 华为技术有限公司 | Superposition coding method, apparatus and system |
| WO2015024227A1 (en) * | 2013-08-22 | 2015-02-26 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for performing downlink mu-mimo transmission |
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