CN106488573A - The control information method of sending and receiving of the multiuser MIMO of supercomposed coding - Google Patents
The control information method of sending and receiving of the multiuser MIMO of supercomposed coding Download PDFInfo
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- CN106488573A CN106488573A CN201510549086.8A CN201510549086A CN106488573A CN 106488573 A CN106488573 A CN 106488573A CN 201510549086 A CN201510549086 A CN 201510549086A CN 106488573 A CN106488573 A CN 106488573A
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- information
- dci
- specific identifier
- rrc signaling
- control information
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
The present invention proposes a kind of control information sending method of the multiuser MIMO of supercomposed coding, adds the Data scheduling information of other UE in described at least two UE in the Downlink Control Information DCI of the UE at least two user equipment (UE)s being overlapped encoding；Send Downlink Control Information DCI to described at least two UE, the specific identifier that cyclic redundancy check information CRC of the DCI of described each UE is respectively adopted each UE is scrambled.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 the control letter of the multiuser MIMO of wireless communication field, more particularly, to supercomposed coding
Breath method of sending and receiving.
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 information sending method of multiuser MIMO, bag
Include：
The Downlink Control Information of the UE at least two user equipment (UE)s being overlapped encoding
Add the Data scheduling information of other UE in described at least two UE in DCI；
Send Downlink Control Information DCI to described at least two UE, the circulation of the DCI of described each UE is superfluous
The specific identifier that remaining check information CRC is respectively adopted each UE is scrambled.
Further, also include sending notice signaling to a described UE, in described notice signaling, carry institute
State the specific identification information of other UE, specifically include：
Send radio resource control RRC signaling to a described UE, carry described in described RRC signaling
The specific identifier of other UE；Or,
Send RRC signaling to a described UE, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and to described first UE send DCI, described DCI
In comprise other UE described specific identifier index information.
Further, described specific identifier includes：C-RNTI or SPS-RNTI.
Further, also include determining, according to dispatching algorithm, at least two user equipmenies being overlapped encoding
UE, specially：
According to the channel condition information of UE, select beam shaping UE identical with precoding direction as described
At least two UE of the supercomposed coding carrying out；Or,
According to the channel condition information of UE, select beam shaping identical with precoding direction and make debugging algorithm
The maximum UE of metric as the described supercomposed coding carrying out at least two UE.
Further, comprise in the DCI sending to a described UE：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
Based on identical design, the present invention also goes out a kind of control information of the multiuser MIMO of supercomposed coding
Method of reseptance, including：Specific identifier blind check Physical Downlink Control Channel using this user equipment (UE)
PDCCH；Receive the Downlink Control Information DCI that base station sends, what acquisition wherein comprised is overlapped encoding
At least two UE in other UE Data scheduling information.
Further, also include receive base station send notice signaling, obtain wherein carry described other
The specific identification information of UE, specifically includes：
Receive the radio resource control RRC signaling that described base station sends, obtain in described RRC signaling and carry
Other UE described specific identifier；Or,
Receive the RRC signaling that described base station sends, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and using this UE specific identifier receive described base station
The DCI sending, obtains the index information of the specific identifier of other UE described comprising in described DCI, from
And finally obtain the specific identifier of other UE described.
Further, also include：Using the specific identifier data schedule information of other UE described, receive
The user data of other UE described on downlink physical DSCH Downlink Shared Channel PDSCH；From total receipt signal
The middle user data removing other UE described, obtains the user data of this UE.
Further, described specific identifier includes：C-RNTI or SPS-RNTI.
Further, comprise in the described DCI receiving：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
The method of the present invention makes nearly user can obtain the Downlink Control Information of remote user, carries out interference and eliminates
Solve the data message of oneself eventually 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.
Brief description
Fig. 1 is the basic handling block diagram of the embodiment of the present invention 1.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention.
One embodiment of the present of invention proposes a kind of control information sending method of multiuser MIMO, including：
In the Downlink Control Information DCI of the UE at least two user equipment (UE)s being overlapped encoding
Add the Data scheduling information of other UE in described at least two UE；Send out to described at least two UE
Send Downlink Control Information DCI, cyclic redundancy check information CRC of the DCI of described each UE is respectively adopted
The specific identifier of each UE is scrambled.
In one alternate embodiment, also include sending notice signaling, described notice letter to a described UE
Carry the specific identification information of other UE described in order, specifically include：
Send radio resource control RRC signaling to a described UE, carry described in described RRC signaling
The specific identifier of other UE；Or,
Send RRC signaling to a described UE, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and to described first UE send DCI, described DCI
In comprise other UE described specific identifier index information.
In one alternate embodiment, specific identifier includes：C-RNTI or SPS-RNTI.
In one alternate embodiment, also include determining, according to dispatching algorithm, be overlapped encoding at least two
User equipment (UE), specially：
According to the channel condition information of UE, select beam shaping UE identical with precoding direction as described
At least two UE of the supercomposed coding carrying out；Or,
According to the channel condition information of UE, select beam shaping identical with precoding direction and make debugging algorithm
The maximum UE of metric as the described supercomposed coding carrying out at least two UE.
In one alternate embodiment, comprise in the DCI sending to a described UE：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
Based on identical design, one embodiment of the present of invention also goes out a kind of multiuser MIMO of supercomposed coding
Control information method of reseptance, including：Specific identifier blind check physical down control using this user equipment (UE)
Channel PDCCH processed；Receive the Downlink Control Information DCI that base station sends, obtain the carrying out wherein comprising and fold
Plus the Data scheduling information of other UE at least two UE of coding.
In one alternate embodiment, also include receiving the notice signaling that base station sends, acquisition wherein carries
The specific identification information of other UE described, specifically includes：
Receive the radio resource control RRC signaling that described base station sends, obtain in described RRC signaling and carry
Other UE described specific identifier；Or,
Receive the RRC signaling that described base station sends, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and using this UE specific identifier receive described base station
The DCI sending, obtains the index information of the specific identifier of other UE described comprising in described DCI, from
And finally obtain the specific identifier of other UE described.
In one alternate embodiment, also include：Specific identifier data scheduling using other UE described
Information, receives the user data of other UE described on downlink physical DSCH Downlink Shared Channel PDSCH；From
Remove the user data of other UE described in total receipt signal, obtain the user data of this UE.
In one alternate embodiment, described specific identifier includes：C-RNTI or SPS-RNTI.
In one alternate embodiment, comprise in the described DCI receiving：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
The method of the present invention makes nearly user can obtain the Downlink Control Information of remote user, thus solving remote user
User data carry out interference eliminate last solution obtain the data message of oneself it is achieved that supercomposed coding is in LTE
Application in system, can lift the systematic function of existing MU-MIMO, and to prior art and agreement
Impact is less.
Embodiment 1
In the present embodiment, the control information of remote user is added in the Downlink Control Information of nearly user for base station
It is handed down to nearly user, nearly user blind check PDCCH, solve DCI and therefrom obtain remote scheduling user data information,
Then utilize interference cancellation techniques, obtain the PDSCH information of nearly user oneself.Refer to Fig. 1, process
Process comprises the steps.
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)；
Add the Data scheduling information of remote user in the Downlink Control Information of nearly user；
Send Downlink Control Information DCI, be sent in the DCI of nearly user and can include power ratio and remote use
The contents such as family schedule information (referring to embodiment 4 and embodiment 5).
UE side：
C-RNTI blind check PDCCH using this UE；
Obtain the remote scheduling user data information comprising in DCI；
Receive the notice signaling carrying remote user C-RNTI；
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：Remote user only just passes and just adopts supercomposed coding, in the Downlink Control Information DCI of nearly user
Following information can be comprised：
Remote user, the power ratio of nearly user
The modulation of remote user and coded system, 5bit represents
RV version, 1bit represents
Example 5：Pass at the beginning of remote user and retransmit all using supercomposed coding, can in nearly user Downlink Control Information DCI
To comprise following information：
Remote user, the power ratio of nearly user
The modulation of remote user and coded system, 5bit represents
RV version, 1bit represents
The new data instruction of remote user
The HARQ process number of remote user
One of ordinary skill in the art will appreciate that：The all or part of step realizing said method embodiment can
Completed with the hardware related by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit
In storage media, this program upon execution, executes the step including said method embodiment；And aforesaid storage
Medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
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 (10)
1. a kind of control information sending method of the multiuser MIMO of supercomposed coding is it is characterised in that wrap
Include：
The Downlink Control Information of the UE at least two user equipment (UE)s being overlapped encoding
Add the Data scheduling information of other UE in described at least two UE in DCI；
Send Downlink Control Information DCI to described at least two UE, the circulation of the DCI of described each UE is superfluous
The specific identifier that remaining check information CRC is respectively adopted each UE is scrambled.
2. method according to claim 1 is it is characterised in that also include sending out to a described UE
Send notice signaling, carry the specific identification information of other UE described in described notice signaling, specifically include：
Send radio resource control RRC signaling to a described UE, carry described in described RRC signaling
The specific identifier of other UE；Or,
Send RRC signaling to a described UE, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and to described first UE send DCI, described DCI
In comprise other UE described specific identifier index information.
3. method according to claim 2 is it is characterised in that described specific identifier includes：C-RNTI
Or SPS-RNTI.
4. method according to claim 1 is it is characterised in that also include being determined according to dispatching algorithm
It is overlapped at least two user equipment (UE)s encoding, specially：
According to the channel condition information of UE, select beam shaping UE identical with precoding direction as described
At least two UE of the supercomposed coding carrying out；Or,
According to the channel condition information of UE, select beam shaping identical with precoding direction and make debugging algorithm
The maximum UE of metric as the described supercomposed coding carrying out at least two UE.
5. method according to claim 1 it is characterised in that to described first UE send DCI
In comprise：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
6. a kind of control information method of reseptance of the multiuser MIMO of supercomposed coding is it is characterised in that wrap
Include：
Specific identifier blind check physical downlink control channel PDCCH using this user equipment (UE)；
Receive the Downlink Control Information DCI that base station sends, what acquisition wherein comprised is overlapped coding at least
The Data scheduling information of other UE in two UE.
7. method according to claim 6 is it is characterised in that also include receiving the logical of base station transmission
Know signaling, obtain the specific identification information of other UE described wherein carrying, specifically include：
Receive the radio resource control RRC signaling that described base station sends, obtain in described RRC signaling and carry
Other UE described specific identifier；Or,
Receive the RRC signaling that described base station sends, in described RRC signaling, carrying package contains other UE described
Specific identification information one group of specific identifier list, and using this UE specific identifier receive described base station
The DCI sending, obtains the index information of the specific identifier of other UE described comprising in described DCI, from
And finally obtain the specific identifier of other UE described.
8. method according to claim 7 is it is characterised in that also include：
Using the specific identifier data schedule information of other UE described, receive the descending shared letter of downlink physical
The user data of other UE described on road PDSCH；Other UE described are removed from total receipt signal
User data, obtain the user data of this UE.
9. method according to claim 7 is it is characterised in that described specific identifier includes：C-RNTI
Or SPS-RNTI.
10. method according to claim 6 is it is characterised in that comprise in the described DCI receiving：
The power ratio information of described at least two UE, the modulation/coding mode of other UE described and RV
Version information；Or
The power ratio information of described at least two UE, the modulation/coding mode of other UE described, RV
Version information, the new data instruction of other UE described and the hybrid automatic repeat-request of other UE described
HARQ process number.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510549086.8A CN106488573A (en) | 2015-08-31 | 2015-08-31 | The control information method of sending and receiving of the multiuser MIMO of supercomposed coding |
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| CN201510549086.8A CN106488573A (en) | 2015-08-31 | 2015-08-31 | The control information method of sending and receiving of the multiuser MIMO of supercomposed coding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111213425A (en) * | 2018-02-11 | 2020-05-29 | 索尼公司 | Apparatus and method in wireless communication system, computer readable storage medium |
| CN111972024A (en) * | 2018-08-10 | 2020-11-20 | Oppo广东移动通信有限公司 | Channel state information reporting method, terminal equipment and network equipment |
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| 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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2015
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Patent Citations (4)
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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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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