CN103327532A - Method and device for downlink multi-cell multi-user combined transmission - Google Patents
Method and device for downlink multi-cell multi-user combined transmission Download PDFInfo
- Publication number
- CN103327532A CN103327532A CN201310169018XA CN201310169018A CN103327532A CN 103327532 A CN103327532 A CN 103327532A CN 201310169018X A CN201310169018X A CN 201310169018XA CN 201310169018 A CN201310169018 A CN 201310169018A CN 103327532 A CN103327532 A CN 103327532A
- Authority
- CN
- China
- Prior art keywords
- user
- data
- users
- transmission
- residential quarters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method and device for downlink multi-cell multi-user combined transmission. According to the method, in the downlink transmission, multiple cells simultaneously serve a specific user in a combination mode, and in some cells, other users needing service also exist. At a transmitting end, base stations perform matching on the specific user and other users needing the service in the cells, and by the adoption of the superposition modulation technology, data of the matched users are transmitted in a common-frequency and one-timeslot mode. By the adoption of the method of power distribution, service quality requirements of the users are simultaneously met. Correspondingly, at a receiving end, each user obtains own data information through a corresponding receiving process algorithm. According to the method and device, on the basis of the utilization of the combined transmission technology, other users needing the service in the cells are considered, and the potential problem that under the conditions that loads are high, and radio resources are limited, due to the fact that the cells serve the specific user simultaneously in the combination mode, system capacity is decreased is solved. The system capacity is increased.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method and apparatus of many residential quarters multi-user association transmission of down link, combine simultaneously the superposition modulated technology in the radio communication.
Background technology
In the existing mobile communication multi-antenna technology scheme, the basic configuration of base station end number of antennas is 1,2 or 4, and the terminal antenna number is 1 or 2, and transmission capacity is limited, in some cases, some user, the user performance that especially is in cell edge is very poor.Along with the development of wireless access technology in the radio communication, multipoint cooperative the spaced antenna technology of antenna number appearred increasing by increasing new site, i.e..In the downlink transmission scheme of physical layer, make a plurality of residential quarters serve simultaneously the multipoint cooperative mode of same Cell Edge User by employing, reduce or the control presence of intercell interference, improve the signal strength signal intensity of uplink downlink, improve the performance of Cell Edge User.
The coordinated multipoint transmission technology is counted as the raising community marginal user performance, one of important technology of establishment presence of intercell interference.At present, this coordinated multipoint transmission technology mainly contains two schemes:
(1) joint transmission
(2) cooperative scheduling/beam shaping
Whether the main distinction of two schemes is between the base station data message of sharing users.In the joint transmission scheme, share all channel information and user data informations between a plurality of transfer points, after processing by certain signal, unite simultaneously and send data to the user, like this, serve a user by multipoint cooperative, just improved user's performance.The joint transmission scheme that a lot of optimizations are arranged at present wherein has the joint transmission scheme based on precoding technique, has based on the joint transmission scheme that sends diversity, and the joint transmission scheme based on spatial reuse is arranged; In cooperative scheduling/beam shaping scheme, shared channel information between a plurality of transfer points is carried out packet scheduling by certain algorithm to the user, to reduce inter-user interference, improves simultaneously user's performance.Participate between the base station of cooperation the not data message of sharing users, only have user's main serving BS and user to carry out data communication, shared each user's channel information, distributed intelligence etc. between each cooperative base station, and carry out combined dispatching based on these information.Because the beam shaping technology is to improve the cell edge availability of frequency spectrum, reduces the important technology of presence of intercell interference, the beam shaping scheme that so-called collision is hidden therefore each cooperative base station is carried out wave beam based on the user profile of sharing combined dispatching appearred, i.e..
Yet, the transmission of this multipoint cooperative has also brought certain drawback simultaneously, namely under the limited condition of residential quarter multi-load and Radio Resource, the problem that has caused potential cell capacity to descend, other users that need to serve in the residential quarter can't be taken into account in the residential quarter that is under the joint transmission pattern.
Summary of the invention
The invention provides the method and apparatus of a kind of descending many residential quarters multi-user association transmission, take into account again the performance of other users in the residential quarter when having realized to improve a certain specific user's performance, be applied in descending many residential quarters multi-user's the joint transmission, effectively avoided in the situation that the problem that the limited potential power system capacity that causes of residential quarter multi-load and Radio Resource descends has improved power system capacity.
The embodiment of the invention provides the sending method of a kind of descending many residential quarters multi-user association transmission, comprising:
Obtain a plurality of users' channel information and data message, determine that a certain specific user is the joint transmission pattern;
Other users and this specific user to the needs service match;
Pairing user's data are carried out superposition modulated;
Co-frequency co-time slot sends pairing user's data.
The embodiment of the invention also provides the method for reseptance of a kind of descending many residential quarters multi-user association transmission, comprising:
Receive user data;
Demodulation;
Information merges.
The embodiment of the invention also provides a kind of transmitting terminal, comprising:
Acquiring unit is for the channel information and the data message that obtain multi-user in current a plurality of residential quarter;
Scheduling unit is used for the specific user under definite joint transmission pattern, and carries out multi-user's pairing;
Modulating unit is for a plurality of pairing of superposition modulated users' data;
Transmitting element is used for sending multi-user data.
The embodiment of the invention also provides a kind of receiving terminal, comprising:
Receiving element is for the data that receive the user.
Demodulating unit is for the information that demodulates each user.
Merge cells is for the information that merges the specific user.
Beneficial effect of the present invention is as follows:
The method and apparatus of a kind of descending many residential quarters provided by the invention multi-user association transmission, transmitting terminal obtains a plurality of users' channel information and data message, determines that a certain specific user is the joint transmission pattern; Other users and this specific user to the needs service match; Pairing user's data are carried out superposition modulated; Send pairing user's data at co-frequency co-time slot.Correspondingly, receiving terminal receives user data; Demodulation; Information merges.Adopt method provided by the invention, in the situation that high capacity and Radio Resource are limited, match neatly according to the loading condition of residential quarter and user's the operation quality requirement user to other needs services in some specific users and the residential quarter base station, reach the purpose of balance user performance by power division, then adopt the superposition modulated mode that a plurality of pairing users' data stack is modulated at together, send the problem that the potential cell capacity that federated service is brought in some specific users when having solved owing to multiple sectors at same descends at co-frequency co-time slot.
Description of drawings
The system schematic of the method and apparatus that a kind of descending many residential quarters multi-user association that Fig. 1 provides for the embodiment of the invention transmits.
The sending method flow chart that a kind of descending many residential quarters multi-user association that Fig. 2 provides for the embodiment of the invention transmits;
The method of reseptance flow chart that a kind of descending many residential quarters multi-user association that Fig. 3 provides for the embodiment of the invention transmits;
A kind of sending end structure schematic diagram that Fig. 4 provides for the embodiment of the invention.
A kind of receiving terminal structural representation that Fig. 5 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides the method and apparatus of a kind of descending many residential quarters multi-user association transmission, when having realized under descending multi-plot joint transmission mode a certain specific user served, there are other users that need service in some residential quarter, match to other users in this specific user and the residential quarter according to the loading condition of residential quarter and user's operation quality requirement the base station, business demand and channel status according to different user, by the pairing user is carried out suitable power division, adopt the superposition modulated technology, send simultaneously pairing user's data at co-frequency co-time slot, correspondingly, receiving terminal adopts Multiuser Detection or interference cancellation techniques, eliminate multi-user interference, obtain the data of each user side, carry out demodulation according to corresponding demodulation method, obtain each user's information, and the specific user of associating under the transmission mode information merged, obtain diversity gain, this has just realized under the limited condition of residential quarter high capacity and Radio Resource, in the time of the some specific user's data of a plurality of residential quarters while joint transmission, taking into account needs other users of serving in the residential quarter, improved power system capacity.
Below in conjunction with accompanying drawing said method of the present invention and device are described in detail.
The embodiment of the invention provides the special case of the method and apparatus of a kind of descending many residential quarters multi-user associations transmission, i.e. the method and apparatus of two the user's joint transmission in descending two residential quarters as shown in Figure 1, comprising:
In the down link of mobile communication physical layer, there are some specific user UE1 poor-performings, thereby the data of two residential quarter cell1 and cell2 while this specific user UE1 of joint transmission are arranged to reach the purpose that improves the UE1 performance, simultaneously, the user who in cell1, does not have other to serve, other users that need to serve are arranged in cell2, in cell2, select UE2 and UE1 to match by dispatching algorithm.If also there are other users that need to serve among the cell1, corresponding pairing, the same cell2 of processing procedure.
The method and apparatus of a kind of descending many residential quarters multi-user association transmission that corresponding embodiment provides, the embodiment of the invention provides the sending method of a kind of descending many residential quarters multi-user association transmission, as shown in Figure 2, comprising:
Step S201, the channel information that obtains a plurality of users and data message determine that a certain specific user is the joint transmission pattern.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially the base station BS 1 of two residential quarter cell1, cell2, channel information and the data message that BS2 obtains respectively all users in this residential quarter, BS1 and BS2 share the user profile of a plurality of poor-performings each other, determine poor-performing and be in cell1 and the UE1 at cell2 edge is specific user under the joint transmission pattern, BS1 and BS2 share the data message that is in the UE1 under the joint transmission pattern, and federated service is in UE1.
This step can also comprise that the base station judges the performance of each UE by the received signal to noise ratio that obtains UE, and concrete grammar is the UE feedback channel information obtains UE according to the reciprocity of up-downgoing channel to BS or BS channel information or received signal to noise ratio.
Step S202, other users and this specific user of needs service matched.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially the business demand according to loading condition and the different user of this residential quarter, BS1 only serves UE1, and BS2 matches the user UE2 that needs among specific user UE1 and the cell2 to serve.
Step S203, user's the data of will matching are carried out superposition modulated.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially BS2 the data of UE1 and UE2 is modulated in a low-order-modulated mode respectively, after carrying out suitable power division according to the business demand of UE1 and UE2 and channel status, the stacked data of UE1 and UE2 is added together, finishes the superposition modulated process.
Step S204, send pairing user's data at co-frequency co-time slot.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially the data that BS1 sends UE1, BS2 sends UE1 and UE2 superposition modulated data together at co-frequency co-time slot, wherein, BS1 and BS2 are under the joint transmission pattern, service specific user UE1, simultaneously, BS2 tells other user UE2 among the cell2 that a part of resource service need to serve when sending.
The method and apparatus of a kind of descending many residential quarters multi-user association transmission that corresponding embodiment provides, the embodiment of the invention provides the method for reseptance of a kind of descending many residential quarters multi-user association transmission, as shown in Figure 3, comprising:
Step S301, reception user data.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially by Multiuser Detection or interference cancellation techniques, eliminates inter-user interference, obtains the data message of each user side.Being in specific user UE1 under the joint transmission pattern receives from the data of BS1 and BS2 (wherein, the data that receive from BS1 only comprise the data of UE1, the data that receive from BS2 comprise the data that UE1 and UE2 transmit later on through superposition modulated), UE2 receives the data (data that wherein, receive from BS2 comprise the data that UE1 and UE2 transmit later on through superposition modulated) from BS2.
Step S302, demodulation.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step is specially at UE1 end and UE2 end, for the data that receive from BS2, by showing that signaling or implicit expression pilot design distinguish the pairing user and organize the different pieces of information of interior UE1 and UE2, and adopt corresponding demodulation method to demodulate separately data message; Simultaneously, at the UE1 end, for the data that receive from BS1, directly carry out demodulation.
Step S303, information merge.
The method and apparatus of two the user's joint transmission in descending two residential quarters in the corresponding diagram 1, this step are specially at UE1 end, and data that will receive from BS1 and merge according to certain merge algorithm from the data that BS2 receives obtain diversity gain.
Based on same inventive concept, the sending method that a kind of descending many residential quarters multi-user association that provides according to the above embodiment of the present invention transmits, correspondingly, the embodiment of the invention provides a kind of transmitting terminal, and structural representation specifically comprises as shown in Figure 4:
Acquiring unit 401 is for the channel information and the data message that obtain multi-user in current a plurality of residential quarter;
Modulating unit 403 is for a plurality of pairing of superposition modulated users' data;
Transmitting element 404 is used for sending multi-user data.
The channel information that above-mentioned acquiring unit 401 obtains can also comprise multi-user's received signal to noise ratio.
The method of reseptance that a kind of descending many residential quarters multi-user association that provides according to the above embodiment of the present invention transmits, correspondingly, the embodiment of the invention also provides a kind of receiving terminal, and structural representation specifically comprises as shown in Figure 5:
Receiving element 501 is for the data that receive the user.
Demodulating unit 502 is for the information that demodulates each user.
Merge cells 503 is for the information that merges the specific user.
In sum, the scheme that the embodiment of the invention provides, when having realized under descending multi-plot joint transmission mode a certain specific user served, there are other users that need service in some residential quarter, match to other users in this specific user and the residential quarter according to the loading condition of residential quarter and user's operation quality requirement the base station, business demand and channel status according to different user, by the pairing user is carried out suitable power division, adopt the superposition modulated technology, send simultaneously pairing user's data at co-frequency co-time slot, correspondingly, receiving terminal adopts Multiuser Detection or interference cancellation techniques, eliminate multi-user interference, obtain the data of each user side, carry out demodulation according to corresponding demodulation method, obtain each user's information, and the specific user of associating under the transmission mode information merged, obtain diversity gain, this has just realized under the limited condition of residential quarter high capacity and Radio Resource, in the time of the some specific user's data of a plurality of residential quarters while joint transmission, taking into account needs other users of serving in the residential quarter, improved power system capacity.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1. the method for reseptance of descending many residential quarters multi-user association transmission is characterized in that, comprising:
Receive user data;
Demodulation;
Information merges.
2. the method for reseptance of descending many residential quarters according to claim 1 multi-user association transmission is characterized in that:
The described user data that receives is by Multiuser Detection or interference cancellation techniques, eliminates inter-user interference, obtains the data message of each user side, and this data message comprises that the pairing user organizes interior all users' data message.
3. according to claim 1 to the method for reseptance of 2 each described descending many residential quarters multi-user association transmission, it is characterized in that:
Described demodulation is by adopting corresponding demodulation method to demodulate superposition modulated each user's together data message.Wherein, distinguish the data that the pairing user organizes interior different user by showing signaling or implicit expression pilot design, can efficient solution access each user's information.
4. according to claim 1 to the method for reseptance of 3 each described descending many residential quarters multi-user association transmission, it is characterized in that:
Described information merges, and is a certain specific user for a plurality of community associated transmission, by the data of folding merging from different districts, obtains diversity gain.
5. a receiving terminal is characterized in that, comprising:
Receiving element for the data that receive the user, namely by Multiuser Detection or interference cancellation techniques, is eliminated inter-user interference, obtains the data message of each user side.
Demodulating unit for the information that demodulates each user, namely demodulates superposition modulated each user's together data message by corresponding demodulation method.
Merge cells for the information that merges the specific user, namely for a certain specific user of a plurality of community associated transmission, by the data of folding merging from different districts, obtains diversity gain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169018XA CN103327532A (en) | 2009-09-24 | 2009-09-24 | Method and device for downlink multi-cell multi-user combined transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169018XA CN103327532A (en) | 2009-09-24 | 2009-09-24 | Method and device for downlink multi-cell multi-user combined transmission |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100932560A Division CN101931436A (en) | 2009-09-24 | 2009-09-24 | Method and device for joint transmission of downlink multiple cells and multiple users |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103327532A true CN103327532A (en) | 2013-09-25 |
Family
ID=49196007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310169018XA Pending CN103327532A (en) | 2009-09-24 | 2009-09-24 | Method and device for downlink multi-cell multi-user combined transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103327532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685583A (en) * | 2015-11-07 | 2017-05-17 | 中兴通讯股份有限公司 | Multiuser superposition transmission method and multiuser superposition transmission device |
| CN108352888A (en) * | 2015-11-01 | 2018-07-31 | Lg电子株式会社 | The method and its device of the control information for MUST transmission are sent in a wireless communication system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106800A (en) * | 2006-07-11 | 2008-01-16 | 信息产业部电信传输研究所 | A resource scheduling method for uplink interlacing multi-address system |
| CN101505182A (en) * | 2009-03-18 | 2009-08-12 | 北京邮电大学 | Data transmission method and base station based on wave beam forming in multi-antenna system |
-
2009
- 2009-09-24 CN CN201310169018XA patent/CN103327532A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106800A (en) * | 2006-07-11 | 2008-01-16 | 信息产业部电信传输研究所 | A resource scheduling method for uplink interlacing multi-address system |
| CN101505182A (en) * | 2009-03-18 | 2009-08-12 | 北京邮电大学 | Data transmission method and base station based on wave beam forming in multi-antenna system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108352888A (en) * | 2015-11-01 | 2018-07-31 | Lg电子株式会社 | The method and its device of the control information for MUST transmission are sent in a wireless communication system |
| CN108352888B (en) * | 2015-11-01 | 2021-06-29 | Lg电子株式会社 | Method for transmitting control information for MUST transmission in wireless communication system and apparatus therefor |
| US11290993B2 (en) | 2015-11-01 | 2022-03-29 | Lg Electronics Inc. | Method for transmitting control information for MUST transmission in wireless communication system and device therefor |
| CN106685583A (en) * | 2015-11-07 | 2017-05-17 | 中兴通讯股份有限公司 | Multiuser superposition transmission method and multiuser superposition transmission device |
| CN106685583B (en) * | 2015-11-07 | 2020-07-07 | 中兴通讯股份有限公司 | Multi-user superposition transmission method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | Energy-efficient NOMA enabled heterogeneous cloud radio access networks | |
| Gazestani et al. | A survey on implementation and applications of full duplex wireless communications | |
| Feng et al. | Device-to-device communications in cellular networks | |
| CN101483873B (en) | Uplink multipoint collaboration implementing method combining inter-cell interference coordination | |
| CN103781050B (en) | A kind of resource allocation methods of cell edge D2D user | |
| CN104115419A (en) | Methods and apparatus to enhance reliability in millimeter wave wideband communications | |
| CN103209415A (en) | Full duplex interference processing method and device | |
| CN105917732B (en) | Baseband processing unit, radio remote unit and communication method | |
| CN102804656A (en) | OFDMA cellular network and method for mitigating interference | |
| CN103731900A (en) | User access mode selecting method under cell heterogeneous network | |
| CN103181095A (en) | System and method for cooperative heterogeneous communications systems | |
| CN102883451A (en) | Cross layer design method of up resources of shared system by terminal direction connection technology | |
| CN104954975A (en) | D2D (device-to-device) cooperative communication method for harvesting energy in OFDM (orthogonal frequency division multiplexing) cellular network | |
| CN102271352B (en) | Method for transmitting downlink data between relay node and UE | |
| Do et al. | Enabling full-duplex and energy harvesting in uplink and downlink of small-cell network relying on power domain based multiple access | |
| Xu et al. | Performance of D2D aided uplink coordinated direct and relay transmission using NOMA | |
| CN102820954A (en) | Method for reducing inter-cell interference of heterogeneous network | |
| CN102438250B (en) | Method for employing cooperation analog network coding technology to inhibit inter-cell interference | |
| CN103379502A (en) | Spectrum resource distribution method for introducing D2D technology in cellular network | |
| Zhou et al. | Performance analysis of cooperative NOMA with dynamic decode-and-forward relaying | |
| CN104244265A (en) | Communication method and system with D2D communication and cellular communication coexisting in multi-antenna scene | |
| EP2599350B1 (en) | Bi-directional communication method in a cellular mobile telecommunication network and relative telecommunication network | |
| Le et al. | Outage performance of full-duplex overlay CR-NOMA networks with SWIPT | |
| CN101931436A (en) | Method and device for joint transmission of downlink multiple cells and multiple users | |
| Srivastava et al. | Enhanced Distributed Resource Selection and Power Control for High Frequency NR V2X Sidelink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |