CN102468931B - Uplink MIMO (multiple-input multiple-output) adaption method and device - Google Patents
Uplink MIMO (multiple-input multiple-output) adaption method and device Download PDFInfo
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- CN102468931B CN102468931B CN201010549117.7A CN201010549117A CN102468931B CN 102468931 B CN102468931 B CN 102468931B CN 201010549117 A CN201010549117 A CN 201010549117A CN 102468931 B CN102468931 B CN 102468931B
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- 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
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- 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
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- 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
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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, i.e. OFDM) system.In mimo system, signal source S (k) by how to go out with antenna transmission, then pass through wireless channel, accepts with antenna with many at receiving terminal after space-time code, carries out recovering primary signal after space-time decoding at receiving terminal.
The central idea of MIMO is to utilize many antennas to suppress channel fading.Implementation is by multipath antenna channel and transmitting, accepts to be optimized depending on as a whole, thereby realizes high message capacity and the availability of frequency spectrum, is a kind of the be bordering on time domain combined diversity in optimum spatial domain and interference cancellation processing.
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).
Diversity STC technology has been utilized time and space simultaneously, does not improve power system capacity, but improves diversity and coding gain (principle as shown in Figure 1).From schematic diagram, can see, input character (being information source) is divided into two groups, and every group is two characters.Within the first character time, two characters [C1, C2] of every group send from two antennas simultaneously.In the character late time, two characters [C1, C2] are transformed into [C2*, C1*] and again send from two antennas.Reception antenna just can receive that within two character times two kinds of two characters are multi-form like this, by the character restoring after decoding technique.
Spatial reuse SM technology has been utilized space, and transmit leg sends two characters within a character time simultaneously, sends two other character (as shown in Figure 2) in the character late time again.Data flow is at a high speed divided into parallel data flow launches simultaneously, and now the transmitting data of every antenna is different, carries out space demodulation multiplexing at receiving terminal again, is reassembled into highspeed serial data stream.
Uplink virtual MIMO, in the time that terminal is only used a transmit antennas, the mode that can only cooperate by multiple terminals realizes MIMO, i.e. Virtual MIMO technology (as shown in Figure 3).In using VirtualMIMO, two each transmit antennas that use of terminal, and use identical running time-frequency resource, the data of each terminal and the same coding of non-MIMO pattern, interweave, modulation, mapping, sends to base station after the data subcarrier after modulation is paired according to protocol code.The cooperation of two terminals realizes the mode of up virtualMIMO and is also matching method, self adaptation pairing refers to according to the suitable MS of adaptive selection someway and matches, successfully after pairing, if channel condition worsens, transmit unstablely, carry out the processing of self adaptation separation of copulating moth.
In the prior art, the one of stating in the choice in three kinds of modes or non-MIMO mode is carried out transfer of data, can only carry out transfer of data by the mode of selecting over a period to come.But all there is certain applied defect in aforesaid way in concrete applied environment.As: in the time there is no upstream, using MIMO mode terminal can cause interference etc. to other-end, when above-mentioned situation makes transfer of data, can not optimizedly utilize the resource in system, for user provides data transfer mode flexibly.
Summary of the invention
The invention provides a kind of Uplink MIMO adaptive approach and device, use separately any one non-MIMO mode or MIMO mode to carry out transfer of data can not optimizedly to utilize the resource in system for solving prior art, for user provides the problem of data transfer mode flexibly.
The embodiment of the present invention provides a kind of Uplink MIMO adaptive approach, comprising:
Terminal determines that the mode of current transmitting uplink data is the one in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode;
If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient;
If the mode of current transmitting uplink data is virtual MIMO mode, detect the current time cycle and whether reach the second default transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing;
If the mode of current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy;
If the mode of current transmitting uplink data is SM mode, detect the current time cycle and whether reach the 4th default transmission means switching cycle, if so, perform step D1 to D3:
D1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2, judges that described overall budget number, whether lower than the 4th default flow judging threshold, is the transmission means of upstream data to be switched to STC mode, otherwise enters step D3;
D3, judges whether Packet Error Ratio is greater than the 4th default transmission and stablizes judging threshold, is that the transmission means of upstream data switches to STC mode, otherwise process ends.
Also provide a kind of Uplink MIMO self-reacting device according to said method the present invention, comprising:
Transmitting uplink data mode determination module is the one of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode for the mode of determining current transmitting uplink data;
Non-MIMO mode handover module, if the mode for current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient;
Virtual MIMO mode handover module, if the mode for current transmitting uplink data is virtual MIMO mode, whether reach default second transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing if detecting the current time cycle;
STC mode handover module, if the mode for current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy;
SM mode handover module, if be SM mode for the mode of current transmitting uplink data, detect the current time cycle and whether reaches the 4th default transmission means switching cycle, if so, performs step D1 to D3:
D1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2, judges that described overall budget number, whether lower than the 4th default flow judging threshold, is the transmission means of upstream data to be switched to STC mode, otherwise enters step D3;
D3, judges whether Packet Error Ratio is greater than the 4th default transmission and stablizes judging threshold, is that the transmission means of upstream data switches to STC mode, otherwise process ends.
Method and apparatus provided by the invention carrys out the transmission means of adaptive selection upstream data according to situations such as Packet Error Ratio, congested, correlations, on the basis that ensures link reliability, improve system uplink throughput.
Brief description of the drawings
Fig. 1 is the schematic diagram of transfer of data STC mode in prior art;
Fig. 2 is transfer of data SM mode schematic diagram in prior art;
Fig. 3 is uplink virtual MIMO schematic diagram in prior art;
Fig. 4 is the flow chart of a kind of MIMO adaptive approach of the embodiment of the present invention;
Fig. 5 is the current non-MIMO handling process of the embodiment of the present invention;
Fig. 6 is the current virtual MIMO process chart of the embodiment of the present invention;
The current STC process chart of Fig. 7 embodiment of the present invention;
The current SM process chart of Fig. 8 embodiment of the present invention;
The structure chart of a kind of MIMO self-reacting device of Fig. 9 embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of Uplink MIMO adaptive approach, comprising: terminal determines that the mode of current transmitting uplink data is the one in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode; If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient; If the mode of current transmitting uplink data is virtual MIMO mode, detect the current time cycle and whether reach the second default transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing; If the mode of current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy; If the mode of current transmitting uplink data is SM mode, whether detect the current time cycle reaches the 4th default transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget the transmission means of upstream data is switched to Space Time Coding STC mode.
As shown in Figure 4, a kind of Uplink MIMO adaptive approach that the embodiment of the present invention provides, concrete implementation can be:
Step 401, whether Uplink MIMO self adaptation enables, and whether terminal supports MIMO handoff functionality, if yes then enter step 402, otherwise finishes.
Step 402, current whether in non-MIMO, be to enter step 403, otherwise enter step 404.
Step 403: enter current non-MIMO handling process, enter step 410.
Step 404: current whether in virtual MIMO, be to enter step 405, otherwise enter step 406.
Step 405: enter current virtual MIMO handling process, enter step 410.
Step 406: whether the mode of current transmitting uplink data, in STC mode, is to enter step 407, otherwise enters step 408.
Step 407: enter current STC handling process, enter step 410.
Step 408: whether the mode of current transmitting uplink data, in SM mode, is to enter step 409, otherwise enters step 410.
Step 409: enter current SM handling process, enter step 410.
Step 410: process ends.
For convenience of description, below, the judgement parameter of the required use in follow-up flow process is described in detail:
The Packet Error Ratio counting in setting cycle is P: Packet Error Ratio is the bag of error of transmission and the ratio of overall budget number in the cycle, can reflect the channel condition that terminal is current with Packet Error Ratio, if Packet Error Ratio is greater than certain threshold value, thinks channel conditions deteriorate.
Overall budget number is N_Total: if the overall budget number in the cycle, lower than threshold value, thinks that 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 service condition of congested reflection system resource, if the ratio of actual flow and bandwidth of air-interface exceedes thresholding, think that system starts to occur congested, ratio is larger, and system is more congested.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 with relative coefficient, the minimal eigenvalue of channel matrix and the ratio of maximum adjusted value represent.If ratio is 0, channel total correlation, system cannot be distinguished the data that arrived by each channel; If ratio is 1, completely independent at channel, system can be distinguished the data that reached by each channel.If channel is completely independent, SM can successfully decode so, and in actual environment, channel is completely independently, as long as correlation system meets some requirements, to be greater than threshold value, and SM just can successfully decode.Threshold value is relevant with actual environment.
As shown in Figure 5, when the transmission means of current upstream data is non-MIMO mode, wherein, non-MIMO measurement period is that there is no flow decision threshold be that to transmit unstable decision threshold be that to stablize decision threshold be that the congested thresholding that enters of P8 and system uplink is P10 in P5, non-MIMO transmission for P1 (overall budget number is less than P1 and thinks there is no flow), non-MIMO for N1, non-MIMO; , 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 by non-MIMO mode according to frame;
Step 502: judge whether the described time cycle reach non-MIMO measurement period N1, be to enter step 503, otherwise enter step 511;
Step 503: N_Total is counted in Packet Error Ratio P and overall budget in computing cycle;
Step 504: overall budget is counted N_Total and whether is greater than threshold value P1, is to enter step 505, otherwise enters step 511;
Step 505: whether Packet Error Ratio is greater than threshold value P5, is to enter step 509, otherwise enters step 506;
Step 506: whether uplink congestion coefficient is greater than threshold value P10, is to enter step 507, otherwise enters step 511;
Step 507, finds suitable terminal pairing;
Step 508: judge whether to find suitable terminal, do not find applicable terminal, be to enter step 509, otherwise enter step 510;
Step 509: switch to STA mode, enter step 511;
Step 510: triggering terminal is matched, enters step 511;
Step 511: process ends.
As shown in Figure 6, when the transmission means of current upstream data is virtual MIMO mode, wherein, virtual MIMO measurement period is that there is no flow decision threshold be that to transmit unstable decision threshold be P6 for P2, virtual MIMO for N2, virtual MIMO; , 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 by non-MIMO mode according to frame;
Step 602: whether the described time cycle reaches virtual MIMO measurement period N2, is to enter step 603, otherwise enters step 607;
Step 603: calculate Packet Error Ratio P and overall budget and count N_Total;
Step 604: judge that whether the overall budget in the cycle count N_Total lower than threshold value P2, be to enter step 606, otherwise enter step 605.
Step 605: judge that whether the Packet Error Ratio in the cycle is greater than threshold value P6, is to enter step 6, otherwise enters step 607.
Step 606: carry out separation of copulating moth processing, enter step 607.
Step 607: process ends.
As shown in Figure 7, the transmission means of current upstream data is STC mode, wherein, STC measurement period is that there is no flow decision threshold be that to stablize decision threshold be that P9 and the STC relative coefficient thresholding while entering SM is P11 in P3, STC transmission for N3, STC,, 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 by non-MIMO mode according to frame;
Step 702: whether the described time cycle reaches MIMOA measurement period N3, is to enter step 703, otherwise enters step 709;
Step 703: N_Total is counted in Packet Error Ratio and overall budget in measurement period;
Step 704: judge that whether overall budget count N_Total lower than threshold value P3, be to enter step 705, otherwise enter step 706.
Step 705: switch to non-MIMO, enter step 709.
Step 706: judge that Packet Error Ratio, whether lower than threshold value P9, is to enter step 707; Otherwise enter step 709.
Step 707: judge whether channel relevancy is greater than P11, is to enter step 708, otherwise enter step 709.
Step 708: switch to SM (terminal has SM ability), enter step 709.
Step 709: process ends.
As shown in Figure 8, when the transmission means of current upstream data is SM mode, wherein, SM measurement period is that there is no flow decision threshold be that to transmit unstable decision threshold be P7 for P4, SM for N4, SM., in concrete application, the specific implementation of the current SM handling process of step 409 can be:
Step 801: add up the time cycle that current upstream data transmits by non-MIMO mode according to frame;
Step 802: judge whether the described time cycle reach MIMOB measurement period N4, be to enter step 803, otherwise enter step 807;
Step 803: N_Total is counted in Packet Error Ratio P and overall budget in computing cycle;
Step 804: whether the overall budget number in the cycle, lower than threshold value P4, is to enter step 806, otherwise enters step 805.
Step 805: whether Packet Error Ratio is greater than threshold value P7, is to enter step 806, otherwise enters step 807.
Step 806: switch to STC, enter step 807.
Step 807: process ends.
As shown in Figure 9, the embodiment of the present 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 the one of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode for the mode of determining current transmitting uplink data;
Non-MIMO mode handover module 902, if the mode for current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient;
Virtual MIMO mode handover module 903, if the mode for current transmitting uplink data is virtual MIMO mode, whether reach default second transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing if detecting the current time cycle;
STC mode handover module 904, if the mode for current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy;
SM mode handover module 905, if the mode for current transmitting uplink data is SM mode, whether detect the current time cycle reaches the 4th default transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget the transmission means of upstream data is switched to Space Time Coding STC mode.
Described non-MIMO mode handover module 902 counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode to uplink congestion coefficient or Space Time Coding STC mode specifically comprises:
A1, terminal determines 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 described overall budget counts N_Total and whether be greater than default first flow judging threshold, is to proceed to steps A 3, otherwise process ends;
A3, judges whether Packet Error Ratio is greater than the first default transmission and stablizes judging threshold, is to proceed to steps A 5, otherwise proceeds to steps A 4;
A4, whether uplink congestion coefficient is greater than the first default uplink congestion threshold value, is to proceed to steps A 5, otherwise process ends;
A5, judges whether to find the terminal of pairing, is the Space Time Coding STC mode that transmission means of upstream data switched to, otherwise triggering terminal matches, and process ends.
Described 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 processing and specifically comprise:
B1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2, judges that whether the overall budget in the cycle counts N_Total lower than the second default flow judging threshold, is to enter step B4, otherwise enters step B3.
B3: judge whether Packet Error Ratio in the cycle is greater than the second default transmission and stablizes judging threshold, is to enter step B4, otherwise enters step process ends; .
Step B4, carries out separation of copulating moth processing, process ends.
Described STC mode handover module 904 counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode to channel relevancy or non-MIMO mode comprises:
C1, terminal determines that N_Total is counted in Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2, judges that overall budget counts N_Total whether lower than the 3rd default flow judging threshold, is the non-MIMO mode that transmission means of upstream data switched to, and process ends, otherwise enters step C3;
C3, judges whether Packet Error Ratio stablizes judging threshold lower than the 3rd default transmission, is to enter step C4; Otherwise process ends;
C4, judges whether channel relevancy is greater than relative coefficient threshold value, is that the transmission means of upstream data switches to SM mode, otherwise process ends.
Described 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 means of upstream data is switched to Space Time Coding STC mode is comprised:
D1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2, judges that described overall budget number, whether lower than the 4th default flow judging threshold, is the transmission means of upstream data to be switched to STC mode, otherwise enters step D3;
D3, judges whether Packet Error Ratio is greater than the 4th default transmission and stablizes judging threshold, is that the transmission means of upstream data switches to STC mode, otherwise process ends.
If terminal does not have uplink traffic, allow terminal in up non-MIMO state, use a transmit antennas, reduce the interference of this terminal to other-end, the overall interference of reduction system.
Terminal is in up non-MIMO, unstable or up appearance is congested and do not have suitable terminal to match if there is transmission, is switched to up STC state; If up appearance is congested and transmission stable, find a suitable terminal and match, find and entered uplink virtual MIMO state.
Terminal is in uplink virtual MIMO, if terminal does not have flow or transmit unstable rule to carry out separation of copulating moth processing.
Terminal, in up STC, if without uplink traffic, switches to up non-MIMO state; If transmission is stable and correlation satisfies condition, switch to SM state, system uplink throughput is provided.
Terminal is in up SM mode, if terminal does not have flow or transmits unstable rule and to STC state, can improve the stability of a system, reduction interference.
Method of the present invention is not limited to the embodiment described in embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to equally technological innovation scope of the present invention.Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a Uplink MIMO adaptive approach, is characterized in that, comprising:
Terminal determines that the mode of current transmitting uplink data is the one in non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode;
If the mode of current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient;
If the mode of current transmitting uplink data is virtual MIMO mode, detect the current time cycle and whether reach the second default transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing;
If the mode of current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy;
If the mode of current transmitting uplink data is SM mode, detect the current time cycle and whether reach the 4th default transmission means switching cycle, if so, perform step D1 to D3:
D1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2, judges that described overall budget number, whether lower than the 4th default flow judging threshold, is the transmission means of upstream data to be switched to STC mode, otherwise enters step D3;
D3, judges whether Packet Error Ratio is greater than the 4th default transmission and stablizes judging threshold, is that the transmission means of upstream data switches to STC mode, otherwise process ends.
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, describedly count N_Total and the transmission means of upstream data is switched to virtual MIMO mode to uplink congestion coefficient or Space Time Coding STC mode specifically comprises according to Packet Error Ratio P, overall budget in the cycle:
A1, terminal determines 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 described overall budget counts N_Total and whether be greater than default first flow judging threshold, is to proceed to steps A 3, otherwise process ends;
A3, judges whether Packet Error Ratio is greater than the first default transmission and stablizes judging threshold, is to proceed to steps A 6, otherwise proceeds to steps A 4;
A4, whether uplink congestion coefficient is greater than the first default uplink congestion threshold value, is to proceed to steps A 5, otherwise process ends;
A5, judges whether not find the terminal of pairing, is the Space Time Coding STC mode that transmission means of upstream data switched to, otherwise triggering terminal matches, and process ends;
A6, switches to Space Time Coding STC mode by the transmission means of upstream data, and process ends.
3. the method for claim 1, is characterized in that, if the mode of current transmitting uplink data is virtual MIMO mode, describedly counts N_Total according to the Packet Error Ratio P in the cycle and overall budget and carries out separation of copulating moth processing and specifically comprise:
B1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2, judges that whether the overall budget in the cycle counts N_Total lower than the second default flow judging threshold, is to enter step B4, otherwise enters step B3;
B3: judge whether Packet Error Ratio in the cycle is greater than the second default transmission and stablizes judging threshold, is to enter step B4, otherwise enters step process ends;
Step B4, carries out separation of copulating moth processing, process ends.
4. the method for claim 1, it is characterized in that, if the mode of current transmitting uplink data is STC mode, describedly count N_Total and the transmission means of upstream data is switched to SM mode to channel relevancy or non-MIMO mode comprises according to Packet Error Ratio P, overall budget in the cycle:
C1, terminal determines that N_Total is counted in Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2, judges that overall budget counts N_Total whether lower than the 3rd default flow judging threshold, is the non-MIMO mode that transmission means of upstream data switched to, and process ends, otherwise enters step C3;
C3, judges whether Packet Error Ratio stablizes judging threshold lower than the 3rd default transmission, is to enter step C4; Otherwise process ends;
C4, judges whether channel relevancy is greater than relative coefficient threshold value, is that the transmission means of upstream data switches to SM mode, otherwise process ends.
5. a Uplink MIMO self-reacting device, is characterized in that, comprising:
Transmitting uplink data mode determination module is the one of non-multiple-input and multiple-output MIMO mode, virtual MIMO mode, Space Time Coding STC mode or spatial reuse SM mode for the mode of determining current transmitting uplink data;
Non-MIMO mode handover module, if the mode for current transmitting uplink data is non-multiple-input and multiple-output MIMO mode, whether detect the current time cycle reaches the first default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode or Space Time Coding STC mode by uplink congestion coefficient;
Virtual MIMO mode handover module, if the mode for current transmitting uplink data is virtual MIMO mode, whether reach default second transmission means switching cycle, if so, count N_Total according to the Packet Error Ratio P in the cycle and overall budget and carry out separation of copulating moth processing if detecting the current time cycle;
STC mode handover module, if the mode for current transmitting uplink data is STC mode, whether detect the current time cycle reaches the 3rd default transmission means switching cycle, if so, count N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode or non-MIMO mode by channel relevancy;
SM mode handover module, if be SM mode for the mode of current transmitting uplink data, detect the current time cycle and whether reaches the 4th default transmission means switching cycle, if so, performs step D1 to D3:
D1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
D2, judges that described overall budget number, whether lower than the 4th default flow judging threshold, is the transmission means of upstream data to be switched to STC mode, otherwise enters step D3;
D3, judges whether Packet Error Ratio is greater than the 4th default transmission and stablizes judging threshold, is that the transmission means of upstream data switches to STC mode, otherwise process ends.
6. device as claimed in claim 5, it is characterized in that, described non-MIMO mode handover module counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to virtual MIMO mode to uplink congestion coefficient or Space Time Coding STC mode specifically comprises:
A1, terminal determines 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 described overall budget counts N_Total and whether be greater than default first flow judging threshold, is to proceed to steps A 3, otherwise process ends;
A3, judges whether Packet Error Ratio is greater than the first default transmission and stablizes judging threshold, is to proceed to steps A 6, otherwise proceeds to steps A 4;
A4, whether uplink congestion coefficient is greater than the first default uplink congestion threshold value, is to proceed to steps A 5, otherwise process ends;
A5, judges whether not find the terminal of pairing, is the Space Time Coding STC mode that transmission means of upstream data switched to, otherwise triggering terminal matches, and process ends;
A6, switches to Space Time Coding STC mode by the transmission means of upstream data, and process ends.
7. device as claimed in claim 5, is characterized in that, described 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 processing and specifically comprise:
B1, terminal determines that N_Total is counted in Packet Error Ratio P and the overall budget of transmitting uplink data in the cycle;
B2, judges that whether the overall budget in the cycle counts N_Total lower than the second default flow judging threshold, is to enter step B4, otherwise enters step B3;
B3: judge whether Packet Error Ratio in the cycle is greater than the second default transmission and stablizes judging threshold, is to enter step B4, otherwise enters step process ends;
Step B4, carries out separation of copulating moth processing, process ends.
8. device as claimed in claim 5, is characterized in that, described STC mode handover module counts N_Total according to Packet Error Ratio P, overall budget in the cycle and the transmission means of upstream data is switched to SM mode to channel relevancy or non-MIMO mode comprises:
C1, terminal determines that N_Total is counted in Packet Error Ratio and the overall budget of transmitting uplink data in the cycle;
C2, judges that overall budget counts N_Total whether lower than the 3rd default flow judging threshold, is the non-MIMO mode that transmission means of upstream data switched to, and process ends, otherwise enters step C3;
C3, judges whether Packet Error Ratio stablizes judging threshold lower than the 3rd default transmission, is to enter step C4; Otherwise process ends;
C4, judges whether channel relevancy is greater than relative coefficient threshold value, is that the transmission means of upstream data switches to SM mode, otherwise process ends.
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| 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 |
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| 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 |
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| 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 |
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