CN102468931A - Uplink MIMO (multiple-input multiple-output) adaption method and device - Google Patents
Uplink MIMO (multiple-input multiple-output) adaption method and device Download PDFInfo
- Publication number
- CN102468931A CN102468931A CN2010105491177A CN201010549117A CN102468931A CN 102468931 A CN102468931 A CN 102468931A CN 2010105491177 A CN2010105491177 A CN 2010105491177A CN 201010549117 A CN201010549117 A CN 201010549117A CN 102468931 A CN102468931 A CN 102468931A
- Authority
- CN
- China
- Prior art keywords
- mode
- uplink data
- cycle
- packet error
- total
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses an uplink MIMO (multiple-input multiple-output) adaption method and device used in the technical field of communication. The uplink MIMO adaption method comprises the following steps: judging the current uplink data transmission mode, and carrying out uplink data transmission according to the packet error rate P, the total packet number N_Total, the uplink congestion coefficient and the channel correlation by adopting the optimal mode in the non-MIMO mode, the virtual MIMO mode, the STC (space time coding) mode or the SM (spacial multiplexing) mode. Due to the adoption of the uplink MIMO adaption method and device, the problems in the prior art that the resource in a system can not be used optimally when only the non-MIMO mode or the virtual MIMO mode is used for carrying out data transmission and the flexible data transmission mode can not be provided for the user are solved. According to the uplink MIMO adaption method and device, the data transmission mode can be selected in an adaptive way according to the packet error rate, the uplink congestion coefficient, the channel correlation and the like, and the uplink throughput of the system can be improved on the basis of guaranteeing the reliability of a link.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of Uplink MIMO adaptive approach and device.
Background technology
MIMO is one of key technology of physical layer in OFDMA (Orthogonal Frequency Division Multiple Access, the i.e. OFDM) system.In mimo system, signal source S (k) passes through wireless channel again through being launched with antenna by many behind the space-time code, accepts with antenna with many at receiving terminal, carries out recovering primary signal after the space-time decoding at receiving terminal.
The central idea of MIMO is to utilize many antennas to suppress channel fading.Implementation is with multipath antenna channel and emission, accepts to look as a whole be optimized, thereby realizes the high message capacity and the availability of frequency spectrum, is a kind of be bordering on optimum time domain combined branch collection in spatial domain and interference cancellation processing.
The MIMO technology mainly contains two kinds of application: STC (Space Time Coding, Space Time Coding; Comprise transmit diversity and receive diversity) and SM (Spatial Multiplexing, spatial reuse).
Divide collection STC technology to utilize time and space simultaneously, do not improve power system capacity, but carry high diversity and coding gain (principle is as shown in Figure 1).Can see that from schematic diagram input character (being information source) is divided into two groups, every group is two characters.In time, two characters [C1, C2] of every group are simultaneously from two antenna transmission at first character.Character late is in the time, and two characters [C1, C2] are transformed into [C2*, C1*] and send from two antennas once more.Reception antenna just can receive in the time that at two characters two kinds of two characters are multi-form like this, through the character that restores behind the decoding technique.
Spatial reuse SM techniques make use the space, transmit leg sends two characters in the time at a character simultaneously, character late two other character (as shown in Figure 2) of redispatching in the time.Data flow at a high speed is divided into parallel data flow launches simultaneously, and this moment, the emission data of every antenna were different, and it is multiplexing to carry out the space demodulation again at receiving terminal, is reassembled into highspeed serial data stream.
Up virtual MIMO when a transmit antennas is only used at the terminal, can only be realized MIMO through a plurality of terminals cooperation way, i.e. Virtual MIMO technology (as shown in Figure 3).When using VirtualMIMO; A transmit antennas is respectively used at two terminals, and uses identical running time-frequency resource, the data at each terminal and the same coding of non-MIMO pattern; Interweave; Modulation, mapping, the data subcarrier after the modulation sends to the base station according to protocol code after in pairs.The mode of two up virtualMIMO of terminal cooperation realization also is matching method; Self adaptation pairing is meant according to the suitable MS of adaptive selection someway and matches, successfully after the pairing, if channel condition worsens; Transmission is unstable, then carries out the self adaptation separation of copulating moth and handles.
In the prior art, a kind of transfer of data of carrying out in selecting above-mentioned three kinds of modes or non-MIMO mode then can only be carried out transfer of data through the mode of selecting over a period to come.But all there is certain applied defect in aforesaid way in concrete applied environment.As: when not having upstream, interference etc. then can be caused to other-end in using MIMO mode terminal, when above-mentioned situation makes transfer of data, can not optimizedly utilize the resource in the system, for the user provides data transfer mode flexibly.
Summary of the invention
The present invention provides a kind of Uplink MIMO adaptive approach and device; Be used for solving prior art and use separately any one non-MIMO mode or MIMO mode to carry out transfer of data can not optimizedly to utilize the resource in the system, for the user provides the problem of data transfer mode flexibly.
The embodiment of the invention provides a kind of Uplink MIMO adaptive approach, comprising:
The terminal confirms that the mode of current transmitting uplink data is a kind of in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or the spatial reuse SM mode;
If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
If the mode of current transmitting uplink data is the virtual MIMO mode, then detects cycle current time and whether reach the second preset transmission means switching cycle, if then count N_Total and carry out separation of copulating moth and handle according to the Packet Error Ratio P in the cycle and overall budget;
If the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
If the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
According to said method the present invention a kind of Uplink MIMO self-reacting device is provided also, comprises:
Transmitting uplink data mode determination module is used for confirming that the mode of current transmitting uplink data is a kind of of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode;
Non-MIMO mode handover module; If be used for the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
Virtual MIMO mode handover module; If being used for the mode of current transmitting uplink data is the virtual MIMO mode; Whether reach preset second transmission means switching cycle, if then count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth and handle if then detecting cycle current time;
STC mode handover module; If being used for the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
SM mode handover module; If being used for the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
Method and apparatus provided by the invention comes adaptive selection transmission of uplink data mode according to situation such as Packet Error Ratio, congested, correlations, on the basis that guarantees link reliability, improves the system uplink throughput.
Description of drawings
Fig. 1 is the sketch map of transfer of data STC mode in the prior art;
Fig. 2 is a transfer of data SM mode sketch map in the prior art;
Fig. 3 is a up virtual MIMO sketch map in the prior art;
Fig. 4 is the flow chart of a kind of MIMO adaptive approach of the embodiment of the invention;
Fig. 5 is the current non-MIMO handling process of the embodiment of the invention;
Fig. 6 is the current virtual MIMO process chart of the embodiment of the invention;
The current STC process chart of Fig. 7 embodiment of the invention;
The current SM process chart of Fig. 8 embodiment of the invention;
The structure chart of a kind of MIMO self-reacting device of Fig. 9 embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of Uplink MIMO adaptive approach, comprising: the terminal confirms that the mode of current transmitting uplink data is a kind of in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or the spatial reuse SM mode; If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle; If the mode of current transmitting uplink data is the virtual MIMO mode, then detects cycle current time and whether reach the second preset transmission means switching cycle, if then count N_Total and carry out separation of copulating moth and handle according to the Packet Error Ratio P in the cycle and overall budget; If the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle; If the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
A kind of Uplink MIMO adaptive approach as shown in Figure 4, that the embodiment of the invention provided, concrete implementation can be:
Step 401, whether the Uplink MIMO self adaptation enables, and promptly whether the terminal supports the MIMO handoff functionality, if then get into step 402, otherwise finishes.
Whether step 402 currently is in non-MIMO, is then to get into step 403, otherwise gets into step 404.
Step 403: get into current non-MIMO handling process, get into step 410.
Step 404: the current virtual MIMO that whether is in is then to get into step 405, otherwise gets into step 406.
Step 405: get into current virtual MIMO handling process, get into step 410.
Step 406: whether the mode of current transmitting uplink data is in the STC mode, is then to get into step 407, otherwise gets into step 408.
Step 407: get into current STC handling process, get into step 410.
Step 408: whether the mode of current transmitting uplink data is in the SM mode, is then to get into step 409, otherwise gets into step 410.
Step 409: get into current SM handling process, get into step 410.
Step 410: process ends.
Describe for ease, below the judgement parameter of the required use in the flow carried out detailed explanation:
The Packet Error Ratio that counts in the setting cycle is P: Packet Error Ratio is the bag and the ratio of overall budget number of error of transmission in the cycle, can reflect the channel condition that the terminal is current with Packet Error Ratio, if Packet Error Ratio is greater than threshold value necessarily then think channel conditions deteriorate.
The overall budget number is N_Total: if the overall budget number in the cycle is lower than threshold value, think that then the terminal does not have business, concrete threshold value is relevant with actual conditions.
The congested coefficient of system is M (bandwidth/bandwidth of air-interface of the actual use of M=): the operating position of congested reflection system resource, if the ratio of actual flow and bandwidth of air-interface surpasses thresholding, think that then system begins to occur congested, and ratio is big more, and system is congested more.The congestion threshold value is relevant with actual environment.
Relative coefficient is Q (eigenvalue of maximum of the minimal eigenvalue/channel matrix of channel matrix): the independence of channel relevancy reflection interchannel; Can represent that promptly the ratio of the minimal eigenvalue of channel matrix and maximum adjusted value is represented with relative coefficient.If ratio is 0, channel total correlation then, the data that arrived by each channel can't be distinguished by system; If ratio is 1, and is independent fully at channel, the data that reached by each channel can be distinguished by system.If channel is independent fully, SM can successfully decode so, and channel is can not be fully independently in the actual environment, as long as the correlation system meets some requirements, promptly greater than threshold value, SM just can successfully decode.Threshold value is relevant with actual environment.
As shown in Figure 5; When current transmission of uplink data mode is non-MIMO mode; Wherein, non-MIMO measurement period is that not have the flow decision threshold be that to transmit unstable decision threshold be that to stablize decision threshold be that P8 and the congested access door of system uplink are limited to P10 in P5, non-MIMO transmission for P1 (the overall budget number thinks there is not flow less than P1), non-MIMO for N1, non-MIMO; Then in concrete application, the current non-MIMO handling process of step 403 specifically comprises:
Step 501: add up the time cycle that current upstream data transmits through non-MIMO mode according to frame;
Step 502: judge whether the said time cycle reach non-MIMO measurement period N1, be then to get into step 503, otherwise get into step 511;
Step 503: N_Total is counted in Packet Error Ratio P and overall budget in the computing cycle;
Step 504: whether overall budget counts N_Total greater than threshold value P1, is then to get into step 505, otherwise gets into step 511;
Step 505: whether Packet Error Ratio is then to get into step 509, otherwise gets into step 506 greater than threshold value P5;
Step 506: whether the uplink congestion coefficient is then to get into step 507, otherwise gets into step 511 greater than threshold value P10;
Step 508: judge whether to find suitable terminal, do not find suitable terminal, be then to get into step 509, otherwise get into step 510;
Step 509: switch to the STA mode, get into step 511;
Step 510: triggering terminal is matched, and gets into step 511;
Step 511: process ends.
As shown in Figure 6, when current transmission of uplink data mode was the virtual MIMO mode, wherein, the virtual MIMO measurement period was that not have the flow decision threshold be that to transmit unstable decision threshold be P6 for P2, virtual MIMO for N2, virtual MIMO; Then in concrete application, the current virtual MIMO handling process of step 403 specifically comprises:
Step 601: add up the time cycle that current upstream data transmits through non-MIMO mode according to frame;
Step 602: whether the said time cycle reaches virtual MIMO measurement period N2, is then to get into step 603, otherwise gets into step 607;
Step 603: calculate Packet Error Ratio P and overall budget and count N_Total;
Step 604: judge that overall budget in the cycle counts N_Total and whether be lower than threshold value P2, be then to get into step 606, otherwise get into step 605.
Step 605: judge that Packet Error Ratio in the cycle whether greater than threshold value P6, is then to get into step 6, otherwise gets into step 607.
Step 606: carry out separation of copulating moth and handle, get into step 607.
Step 607: process ends.
As shown in Figure 7; Current transmission of uplink data mode is the STC mode; Wherein, The STC measurement period be N3, STC not have the flow decision threshold be that the relative coefficient thresholding of P3, STC transmission stablize decision threshold when being P9 and STC entering SM is P11, then in concrete application, the current STC handling process of step 407 specifically comprises:
Step 701: add up the time cycle that current upstream data transmits through non-MIMO mode according to frame;
Step 702: whether the said time cycle reaches MIMOA measurement period N3, is then to get into step 703, otherwise gets into step 709;
Step 703: N_Total is counted in Packet Error Ratio and overall budget in the measurement period;
Step 704: judge that overall budget counts N_Total and whether be lower than threshold value P3, be then to get into step 705, otherwise get into step 706.
Step 705: switch to non-MIMO, get into step 709.
Step 706: judge whether Packet Error Ratio is lower than threshold value P9, is then to get into step 707; Otherwise get into step 709.
Step 707: whether judge channel relevancy greater than P11, be then to get into step 708, otherwise get into step 709.
Step 708: switch to SM (there is the SM ability at the terminal), get into step 709.
Step 709: process ends.
As shown in Figure 8, when current transmission of uplink data mode was the SM mode, wherein, the SM measurement period was that not have the flow decision threshold be that to transmit unstable decision threshold be P7 for P4, SM for N4, SM.Then in concrete application, the concrete implementation of the current SM handling process of step 409 can be:
Step 801: add up the time cycle that current upstream data transmits through non-MIMO mode according to frame;
Step 802: judge whether the said time cycle reach MIMOB measurement period N4, be then to get into step 803, otherwise get into step 807;
Step 803: N_Total is counted in Packet Error Ratio P and overall budget in the computing cycle;
Step 804: whether the overall budget number in the cycle is lower than threshold value P4, is then to get into step 806, otherwise gets into step 805.
Step 805: whether Packet Error Ratio is then to get into step 806, otherwise gets into step 807 greater than threshold value P7.
Step 806: switch to STC, get into step 807.
Step 807: process ends.
As shown in Figure 9; The embodiment of the invention also provides a kind of Uplink MIMO self-reacting device, comprises transmitting uplink data mode determination module 901, non-MIMO mode handover module 902, virtual MIMO mode handover module 903, STC mode handover module 904 and SM mode handover module 905:
Transmitting uplink data mode determination module 901 is used for confirming that the mode of current transmitting uplink data is a kind of of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode;
Non-MIMO mode handover module 902; If be used for the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
Virtual MIMO mode handover module 903; If being used for the mode of current transmitting uplink data is the virtual MIMO mode; Whether reach preset second transmission means switching cycle, if then count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth and handle if then detecting cycle current time;
STC mode handover module 904; If being used for the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
SM mode handover module 905; If being used for the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
Said non-MIMO mode handover module 902 counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission of uplink data mode is switched to the virtual MIMO mode to the uplink congestion coefficient or Space Time Coding STC mode specifically comprises:
A1, the terminal confirms that N_Total and uplink congestion coefficient are counted in Packet Error Ratio P, the overall budget of transmitting uplink data in the cycle;
A2 judges that said overall budget counts N_Total whether greater than preset first flow judging threshold, is then to change steps A 3 over to, otherwise process ends;
A3 judges that whether Packet Error Ratio stablizes judging threshold greater than the first preset transmission, is then to change steps A 5 over to, otherwise changes steps A 4 over to;
A4, whether the uplink congestion coefficient is then to change steps A 5 over to greater than the first preset uplink congestion threshold value, otherwise process ends;
A5 judges whether to find the terminal of pairing, is then the transmission of uplink data mode to be switched to Space Time Coding STC mode, otherwise triggering terminal matches, and process ends.
Said virtual MIMO mode handover module 903 is counted N_Total according to the Packet Error Ratio P in the cycle and overall budget and is carried out separation of copulating moth and handle and specifically comprise:
B1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2 judges that overall budget in the cycle counts N_Total and whether be lower than the second preset flow judging threshold, is then to get into step B4, otherwise gets into step B3.
B3: judge that whether the Packet Error Ratio in the cycle stablizes judging threshold greater than the second preset transmission, is then to get into step B4, otherwise gets into the step process ends;
Step B4 carries out separation of copulating moth and handles process ends.
Said STC mode handover module 904 counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission of uplink data mode is switched to the SM mode to channel relevancy or non-MIMO mode comprises:
C1, the terminal confirms that N_Total is counted in the Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2 judges that overall budget counts N_Total and whether be lower than the 3rd preset flow judging threshold, is then the transmission of uplink data mode to be switched to non-MIMO mode, and process ends, otherwise gets into step C3;
C3 judges whether Packet Error Ratio is lower than the 3rd preset transmission and stablizes judging threshold, is then to get into step C4; Otherwise process ends;
C4 judges that channel relevancy whether greater than the relative coefficient threshold value, is that then the transmission of uplink data mode switches to the SM mode, otherwise process ends.
Said SM mode handover module 905 is counted N_Total according to the Packet Error Ratio P in the cycle and overall budget and the transmission of uplink data mode is switched to Space Time Coding STC mode is comprised:
D1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2 judges whether said overall budget number is lower than the 4th preset flow judging threshold, is then the transmission of uplink data mode to be switched to the STC mode, otherwise gets into step D3;
D3 judges whether Packet Error Ratio stablizes judging threshold greater than the 4th preset transmission, is that then the transmission of uplink data mode switches to the STC mode, otherwise process ends.
Let the terminal be in up non-MIMO state if the terminal does not have uplink traffic, use a transmit antennas, reduce this terminal the interference of other-end, the overall interference of reduction system.
The terminal is in up non-MIMO, if transmission is unstable or up appearance is congested and do not have suitable terminal to match, then switches to up STC state; If up appearance is congested and the transmission stable, then seek a suitable terminal and match, found and then got into up virtual MIMO state.
The terminal is in up virtual MIMO, if the terminal does not have flow or transmit unstable rule to carry out the separation of copulating moth processing.
The terminal is in up STC, if do not have up flow then switch to up non-MIMO state; If transmission is stable and correlation satisfies condition, then switch to the SM state, the system uplink throughput is provided.
The terminal is in up SM mode, if the terminal does not have flow or transmits unstable rule and to the STC state, can improve the stability of a system, reduction interference.
Method of the present invention is not limited to the embodiment described in the embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to technological innovation scope of the present invention equally.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, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a Uplink MIMO adaptive approach is characterized in that, comprising:
The terminal confirms that the mode of current transmitting uplink data is a kind of in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or the spatial reuse SM mode;
If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
If the mode of current transmitting uplink data is the virtual MIMO mode, then detects cycle current time and whether reach the second preset transmission means switching cycle, if then count N_Total and carry out separation of copulating moth and handle according to the Packet Error Ratio P in the cycle and overall budget;
If the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
If the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
2. the method for claim 1; It is characterized in that; If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, saidly count N_Total and the transmission of uplink data mode is switched to the virtual MIMO mode to the uplink congestion coefficient or Space Time Coding STC mode specifically comprises according to Packet Error Ratio P, overall budget in the cycle:
A1, the terminal confirms that N_Total and uplink congestion coefficient are counted in Packet Error Ratio P, the overall budget of transmitting uplink data in the cycle;
A2 judges that said overall budget counts N_Total whether greater than preset first flow judging threshold, is then to change steps A 3 over to, otherwise process ends;
A3 judges that whether Packet Error Ratio stablizes judging threshold greater than the first preset transmission, is then to change steps A 5 over to, otherwise changes steps A 4 over to;
A4, whether the uplink congestion coefficient is then to change steps A 5 over to greater than the first preset uplink congestion threshold value, otherwise process ends;
A5 judges whether to find the terminal of pairing, is then the transmission of uplink data mode to be switched to Space Time Coding STC mode, otherwise triggering terminal matches, and process ends.
3. the method for claim 1 is characterized in that, if the mode of current transmitting uplink data is the virtual MIMO mode, saidly counts N_Total according to the Packet Error Ratio P in the cycle and overall budget and carries out separation of copulating moth and handle and specifically comprise:
B1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2 judges that overall budget in the cycle counts N_Total and whether be lower than the second preset flow judging threshold, is then to get into step B4, otherwise gets into step B3;
B3: judge that whether the Packet Error Ratio in the cycle stablizes judging threshold greater than the second preset transmission, is then to get into step B4, otherwise gets into the step process ends;
Step B4 carries out separation of copulating moth and handles process ends.
4. the method for claim 1; It is characterized in that; If the mode of current transmitting uplink data is the STC mode, saidly count N_Total and the transmission of uplink data mode is switched to the SM mode to channel relevancy or non-MIMO mode comprises according to Packet Error Ratio P, overall budget in the cycle:
C1, the terminal confirms that N_Total is counted in the Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2 judges that overall budget counts N_Total and whether be lower than the 3rd preset flow judging threshold, is then the transmission of uplink data mode to be switched to non-MIMO mode, and process ends, otherwise gets into step C3;
C3 judges whether Packet Error Ratio is lower than the 3rd preset transmission and stablizes judging threshold, is then to get into step C4; Otherwise process ends;
C4 judges that channel relevancy whether greater than the relative coefficient threshold value, is that then the transmission of uplink data mode switches to the SM mode, otherwise process ends.
5. the method for claim 1 is characterized in that, if the mode of current transmitting uplink data is the SM mode, saidly counts N_Total according to the Packet Error Ratio P in the cycle and overall budget and the transmission of uplink data mode is switched to Space Time Coding STC mode comprises:
D1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2 judges whether said overall budget number is lower than the 4th preset flow judging threshold, is then the transmission of uplink data mode to be switched to the STC mode, otherwise gets into step D3;
D3 judges whether Packet Error Ratio stablizes judging threshold greater than the 4th preset transmission, is that then the transmission of uplink data mode switches to the STC mode, otherwise process ends.
6. a Uplink MIMO self-reacting device is characterized in that, comprising:
Transmitting uplink data mode determination module is used for confirming that the mode of current transmitting uplink data is a kind of of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode;
Non-MIMO mode handover module; If be used for the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode; Whether then detect cycle current time reaches the first preset transmission means switching cycle; If then count N_Total and the uplink congestion coefficient switches to virtual MIMO mode or Space Time Coding STC mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
Virtual MIMO mode handover module; If being used for the mode of current transmitting uplink data is the virtual MIMO mode; Whether reach preset second transmission means switching cycle, if then count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth and handle if then detecting cycle current time;
STC mode handover module; If being used for the mode of current transmitting uplink data is the STC mode; Whether then detect cycle current time reaches the 3rd preset transmission means switching cycle; If then count N_Total and channel relevancy switches to SM mode or non-MIMO mode with the transmission of uplink data mode according to Packet Error Ratio P, overall budget in the cycle;
SM mode handover module; If being used for the mode of current transmitting uplink data is the SM mode; Whether then detect cycle current time reaches the 4th preset transmission means switching cycle; If then count N_Total the transmission of uplink data mode switched to Space Time Coding STC mode according to the Packet Error Ratio P in the cycle and overall budget.
7. device as claimed in claim 6; It is characterized in that said non-MIMO mode handover module counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission of uplink data mode is switched to the virtual MIMO mode to the uplink congestion coefficient or Space Time Coding STC mode specifically comprises:
A1, the terminal confirms that N_Total and uplink congestion coefficient are counted in Packet Error Ratio P, the overall budget of transmitting uplink data in the cycle;
A2 judges that said overall budget counts N_Total whether greater than preset first flow judging threshold, is then to change steps A 3 over to, otherwise process ends;
A3 judges that whether Packet Error Ratio stablizes judging threshold greater than the first preset transmission, is then to change steps A 5 over to, otherwise changes steps A 4 over to;
A4, whether the uplink congestion coefficient is then to change steps A 5 over to greater than the first preset uplink congestion threshold value, otherwise process ends;
A5 judges whether to find the terminal of pairing, is then the transmission of uplink data mode to be switched to Space Time Coding STC mode, otherwise triggering terminal matches, and process ends.
8. device as claimed in claim 6 is characterized in that, said virtual MIMO mode handover module is counted N_Total according to the Packet Error Ratio P in the cycle and overall budget and carried out separation of copulating moth and handle and specifically comprise:
B1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2 judges that overall budget in the cycle counts N_Total and whether be lower than the second preset flow judging threshold, is then to get into step B4, otherwise gets into step B3;
B3: judge that whether the Packet Error Ratio in the cycle stablizes judging threshold greater than the second preset transmission, is then to get into step B4, otherwise gets into the step process ends;
Step B4 carries out separation of copulating moth and handles process ends.
9. device as claimed in claim 6 is characterized in that, said STC mode handover module counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission of uplink data mode is switched to the SM mode to channel relevancy or non-MIMO mode comprises:
C1, the terminal confirms that N_Total is counted in the Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2 judges that overall budget counts N_Total and whether be lower than the 3rd preset flow judging threshold, is then the transmission of uplink data mode to be switched to non-MIMO mode, and process ends, otherwise gets into step C3;
C3 judges whether Packet Error Ratio is lower than the 3rd preset transmission and stablizes judging threshold, is then to get into step C4; Otherwise process ends;
C4 judges that channel relevancy whether greater than the relative coefficient threshold value, is that then the transmission of uplink data mode switches to the SM mode, otherwise process ends.
10. device as claimed in claim 6 is characterized in that, said SM mode handover module is counted N_Total according to the Packet Error Ratio P in the cycle and overall budget and the transmission of uplink data mode is switched to Space Time Coding STC mode comprised:
D1, the terminal confirms that N_Total is counted in the Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2 judges whether said overall budget number is lower than the 4th preset flow judging threshold, is then the transmission of uplink data mode to be switched to the STC mode, otherwise gets into step D3;
D3 judges whether Packet Error Ratio stablizes judging threshold greater than the 4th preset transmission, is that then the transmission of uplink data mode switches to the STC mode, otherwise process ends.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010549117.7A CN102468931B (en) | 2010-11-17 | 2010-11-17 | Uplink MIMO (multiple-input multiple-output) adaption method and device |
| PCT/CN2011/082235 WO2012065544A1 (en) | 2010-11-17 | 2011-11-15 | Adaptive method and device for uplink mimo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010549117.7A CN102468931B (en) | 2010-11-17 | 2010-11-17 | Uplink MIMO (multiple-input multiple-output) adaption method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102468931A true CN102468931A (en) | 2012-05-23 |
| CN102468931B CN102468931B (en) | 2014-10-29 |
Family
ID=46072149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010549117.7A Active CN102468931B (en) | 2010-11-17 | 2010-11-17 | Uplink MIMO (multiple-input multiple-output) adaption method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102468931B (en) |
| WO (1) | WO2012065544A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431778A (en) * | 2007-11-06 | 2009-05-13 | 大唐移动通信设备有限公司 | MIMO mode self-adapting switch method and device |
| EP1774676B1 (en) * | 2004-08-02 | 2009-06-03 | Nokia Corporation | Outer loop power control with transport block diversity transmission |
| CN101621352A (en) * | 2008-07-04 | 2010-01-06 | 大唐移动通信设备有限公司 | Antenna mode self-adaptive switching method, system and device |
| CN101729119A (en) * | 2008-10-15 | 2010-06-09 | 中兴通讯股份有限公司 | Adaptive switching method and system for downlink multi-input multi-output mode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992554A (en) * | 2005-12-29 | 2007-07-04 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for eliminating interference in a wireless communication system |
-
2010
- 2010-11-17 CN CN201010549117.7A patent/CN102468931B/en active Active
-
2011
- 2011-11-15 WO PCT/CN2011/082235 patent/WO2012065544A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1774676B1 (en) * | 2004-08-02 | 2009-06-03 | Nokia Corporation | Outer loop power control with transport block diversity transmission |
| CN101431778A (en) * | 2007-11-06 | 2009-05-13 | 大唐移动通信设备有限公司 | MIMO mode self-adapting switch method and device |
| CN101621352A (en) * | 2008-07-04 | 2010-01-06 | 大唐移动通信设备有限公司 | Antenna mode self-adaptive switching method, system and device |
| CN101729119A (en) * | 2008-10-15 | 2010-06-09 | 中兴通讯股份有限公司 | Adaptive switching method and system for downlink multi-input multi-output mode |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012065544A1 (en) | 2012-05-24 |
| CN102468931B (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102273295B (en) | Method and system for reduced complexity channel estimation and interference cancellation for V-MIMO demodulation | |
| US9484990B2 (en) | Spatial mode adaptation at the cell edge using interferer spatial correlation | |
| CN101394213B (en) | Multi-antenna communication method for time division duplexing mode frequency division multiplexing system | |
| CN105306114B (en) | Base station | |
| US9118473B2 (en) | Efficient multi-user multiple input multiple output (MU-MIMO) | |
| US20130107810A1 (en) | Apparatus and method for switching between single user and multi-user mimo operation in a wireless network | |
| CN104363192A (en) | Receiving method and device of MIMO (multiple-input multiple-output) communication system compatible to multiple frame formats | |
| WO2009017447A2 (en) | Interference based phase shift precoding for ofdm | |
| CN102340474A (en) | OFDM transmitter and methods for reducing the effects of severe interference with symbol loading | |
| CN101940024A (en) | Method and system for wireless communication in multiple operating environments | |
| WO2007124566A1 (en) | Adaptive transmission systems and methods | |
| US10524273B2 (en) | Resource configuration of wireless devices | |
| EP2661005A2 (en) | Wireless communication device with configurable spatial time-frequency coding and methods for use therewith | |
| CN102027694A (en) | Method and apparatus for determining the spatial channels in an spatial division multiple access (SDMA)-based wireless communication system | |
| El-Keyi et al. | MIMO VANETs: Research challenges and opportunities | |
| CN101969369A (en) | Method, system and device for switching multiple input/multiple output (MIMO) transmission modes | |
| US9264266B2 (en) | Successive interference cancellation system and method for MIMO horizontal encoding and decoding | |
| CN103095350B (en) | In a kind of LTE system, self adaptation switches the method for transmission mode | |
| US9860019B2 (en) | Base station apparatus, wireless communication system, and communication method | |
| CN1889385B (en) | Multi-mode radio communication network system | |
| EP2502376B1 (en) | Method and apparatus for seamless transitions between radio links using different frequency bands for data transmission | |
| CN102891707B (en) | Select method and the base station of transmission mode | |
| CN102594418B (en) | Based on the multipoint cooperation data transmission method of orthogonal covering codes | |
| EP2502379A2 (en) | Method and apparatus for seamless transitions between radio links using different frequency bands for data reception | |
| CN102468931B (en) | Uplink MIMO (multiple-input multiple-output) adaption method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |