CN105119693B - The method and device of MCS is set in an unlicensed spectrum - Google Patents
The method and device of MCS is set in an unlicensed spectrum Download PDFInfo
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- CN105119693B CN105119693B CN201510564183.4A CN201510564183A CN105119693B CN 105119693 B CN105119693 B CN 105119693B CN 201510564183 A CN201510564183 A CN 201510564183A CN 105119693 B CN105119693 B CN 105119693B
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- mcs
- carrier wave
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- target terminal
- unlicensed spectrum
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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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- 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
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
Abstract
The present invention provides it is a kind of in an unlicensed spectrum set MCS method and device, wherein, suitable for base station in an unlicensed spectrum set MCS method, including：Obtain the current and/or historical channel situation in unlicensed spectrum between base station and target terminal；According to the current and/or historical channel situation between base station and target terminal in unlicensed spectrum, the corresponding MCS of at least one carrier wave of the base station with target terminal in unlicensed spectrum is determined；By the way that frequency spectrum is authorized to be sent to target terminal by the information of at least one carrier wave and at least one corresponding MCS of carrier wave, MCS when working on any carrier wave being arranged on for target terminal at least one carrier wave.Technical scheme solves the problems, such as in correlation technique that terminal can not be adaptively adjusted MCS when continuously occupying unlicensed spectrum channel, it is ensured that the MCS that terminal is used in lasting occupancy unlicensed spectrum transmission data is capable of the data transmission and channel conditions of preferably reflexless terminal.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of method for setting MCS in an unlicensed spectrum and
A kind of device that MCS is set in an unlicensed spectrum.
Background technology
3GPP normal structures have passed through in RAN#65 plenary session of TSG based on LTE (Long Term Evolution, length
Phase evolution) LAA (Licensed-Assisted Access, auxiliary access) research project project verification, which mainly grinds
Study carefully and how to dispose LTE network in unlicensed spectrum, effectively utilize unlicensed spectrum so as to reach justice, improve LTE system
Message transmission rate purpose.
There are two types of mode, Yi Zhongshi for uses of the LTE to unlicensed spectrum：Unauthorized frequency is used only in downlink data transmission
Spectrum；Another kind is：Unlicensed spectrum can be used in uplink and downlink data transmission, uplink and downlink are multiple in a time division manner
For mode on same unauthorized carrier wave, such time division multiplexing mode is distinct from TDD (the Time Division in LTE
Duplexing) pattern, uplink and downlink there is no specific frame structure, any moment be likely to carry out uplink or
Downlink transfer.It is worth noting that, in LTE network, authorize frequency spectrum and unlicensed spectrum be can be by being similar to carrier aggregation
Mode be used in combination, i.e. a terminal, eNodeB (Evolved Node B, evolved Node B) may work at the same time
It authorizes in frequency spectrum and unlicensed spectrum.
When being operated in unlicensed spectrum, eNodeB or terminal in LAA systems are before transmitting data, it is necessary to advanced
Row Channel Detection, i.e. CCA (Clear Channel Access, clear channel assessment (CCA)) detect, when detect channel be in free time
It, could busy channel transmission data during state；When detecting channel busy, then busy channel is unable to.
In the transmission process of data, for being deployed in the LTE system authorized in frequency range, dynamic dispatching is generally adopted by
Mode, i.e. eNodeB when sending UL-grant (upstream dispatching instructions) to terminal, can all include pin in UL-grant every time
To MCS (Modulation and Coding Scheme, modulation coding scheme) information of the terminal, terminal often receives eNodeB
The UL-grant instructions sent, will (a subframe time length be 1 milli in that subframe corresponding with UL-grant
Second) send the data being modulated according to MCS information after coding.Under normal conditions, the MCS information and terminal that terminal can use
Channel condition between eNodeB is related, and when channel conditions are good, terminal can use the modulation system and higher of higher order
The coding mode of code check, so as to improve the availability of frequency spectrum of channel；When channel conditions are poor, terminal can use the modulation of lower-order
Coding mode and the coding mode compared with low bit- rate, to ensure the bit error rate of data transmission less than setting threshold value.Therefore in order to more
Match channels situation well, LTE system can use UL-grant instructions, and dynamically instruction terminal should be used when sending data
MCS, terminal then according to UL-grant instruction be dynamically updated send data when used MCS.
In the related art, in order to improve the channel utilization in unlicensed spectrum, terminal may use in LAA systems
Data sending mode be：After CCA detection channels can use, the channel can be persistently occupied within a period of time (such as 10ms),
That is eNodeB is dispatched once, and terminal transmission data continues multiple subframes, and is no longer to authorize dynamic dispatching used by frequency range LTE
Mode.
A problem can be related to during lasting busy channel：Since eNodeB only gives a UL-grant,
Terminal how its MCS for being used when transmitting data of adjustment adaptive in the data transmission procedure of continuous time, for this
There is presently no effective solutions for one problem.
Therefore, how to ensure that terminal can be adaptive during unlicensed spectrum channel transmission data is continuously occupied
Ground adjustment MCS is answered to become the technical issues of urgently to be resolved hurrily.
The content of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of new setting in an unlicensed spectrum
The scheme of MCS, solving in correlation technique terminal can not be adaptively when continuously occupying unlicensed spectrum channel transmission data
The problem of adjusting MCS, it is ensured that the MCS that terminal is used in lasting occupancy unlicensed spectrum transmission data can be matched preferably
The data transmission and channel conditions of terminal.
In view of this, the present invention proposes a kind of method for setting MCS in an unlicensed spectrum, suitable for base station, including：
Obtain the current and/or historical channel situation in unlicensed spectrum between the base station and target terminal；According to the base station
Current and/or historical channel situation between the target terminal in unlicensed spectrum, determines the base station and the mesh
Mark at least one carrier wave corresponding MCS of the terminal in the unlicensed spectrum；By authorizing frequency spectrum by least one load
The information of ripple and the target terminal is sent to at least one corresponding MCS of carrier wave, so that the target terminal is set
Put MCS when working on any carrier wave at least one carrier wave.
In the technical scheme, by according to current in unlicensed spectrum between base station and target terminal and/or going through
History channel conditions determine the corresponding MCS of at least one carrier wave of the base station with target terminal in unlicensed spectrum, and pass through mandate
Frequency spectrum is sent to target terminal by the information of at least one carrier wave and with the corresponding MCS of at least one carrier wave so that target is whole
End can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.Wherein, the corresponding MCS of at least one carrier wave
It refers specifically to：Each carrier wave at least one carrier wave is corresponding with MCS.
In the above-mentioned technical solutions, it is preferable that further include：Periodically or aperiodically frequency spectrum is authorized to institute by described
State target terminal transmission and the fresh information of at least one corresponding MCS of carrier wave.
In the technical scheme, can be set according to actual conditions periodically or aperiodically by authorizing frequency spectrum to mesh
Mark terminal transmission and the fresh information of the corresponding MCS of each carrier wave at least one carrier wave so that terminal can in time more
The MCS when working at least one carrier wave of unlicensed spectrum newly stored arrives most suitable MCS into line number to ensure to choose
According to transmission.
In any of the above-described technical solution, it is preferable that the translational speed based on the target terminal is set to the mesh
The time interval that terminal sends the fresh information is marked, is specifically included：When the target terminal is in quasi- stationary state, increase
The time interval of the fresh information is sent to the target terminal；And it is in non-quasi- stationary state in the target terminal
When, reduce the time interval that the fresh information is sent to the target terminal.
In the technical scheme, the variation of terminal location may cause the change of channel conditions, especially in terminal
When translational speed is very fast, the channel conditions between base station change faster, so the translational speed for passing through target terminal is set
The time interval of fresh information is sent to target terminal, enabling ensure at least one with unlicensed spectrum of terminal storage
The corresponding MCS of carrier wave is in last state, to ensure that terminal selection carries out data transmission to most suitable MCS, so that it is guaranteed that
The MCS of selection is capable of the data transmission and channel conditions of preferably reflexless terminal.
Specifically, it is whole to target by increase when target terminal is in quasi- stationary state (such as low speed is mobile, interior)
End sends the time interval of fresh information so that when channel status is more stable, can extend renewal time interval, to reduce
The operation burden of base station；It is whole to target by reducing when target terminal is in non-quasi- stationary state (such as high speed moves)
End sends the time interval of fresh information so that when channel status fluctuation is larger, can shorten renewal time interval, to ensure
Terminal storage is in last state at least one carrier wave corresponding MCS moment of unlicensed spectrum.
According to the second aspect of the invention, it is also proposed that a kind of method that MCS is set in an unlicensed spectrum, suitable for end
End, including：Receive base station by authorize frequency spectrum send unlicensed spectrum at least one carrier wave information and with it is described
At least one corresponding MCS of carrier wave；When the terminal is needed on any carrier wave being operated at least one carrier wave,
According to at least one corresponding MCS of carrier wave determine with any corresponding MCS of carrier wave, and according to described
The corresponding MCS of one carrier wave sets MCS of the terminal on any carrier wave；Wherein, at least one carrier wave phase
Corresponding MCS is true according to the current and/or historical channel situation in the unlicensed spectrum between the terminal by the base station
Fixed.
In the technical scheme, by according at least one in unlicensed spectrum of the reception base station by authorizing frequency spectrum transmission
The information of a carrier wave and with the corresponding MCS of at least one carrier wave, and need in terminal to be operated in above-mentioned at least one carrier wave
In any carrier wave on when, MCS of the terminal on any carrier wave is set according to MCS corresponding with any carrier wave so that target
Terminal can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that periodically or aperiodically receive the base station and authorize frequency by described
Compose the fresh information at least one corresponding MCS of carrier wave sent.
In the technical scheme, base station can be periodically or aperiodically received according to actual conditions by authorizing frequency spectrum
Send the fresh information with the corresponding MCS of each carrier wave so that terminal can upgrade in time storage in unlicensed spectrum
At least one carrier wave on MCS when working, carried out data transmission with ensuring to choose to most suitable MCS.
According to the third aspect of the invention we, it is also proposed that a kind of device that MCS is set in an unlicensed spectrum, suitable for base
It stands, including：Acquiring unit, for obtaining the current and/or history between the base station and target terminal in unlicensed spectrum
Channel conditions；Determination unit, for according to current in unlicensed spectrum between the base station and the target terminal and/or
Historical channel situation determines that at least one carrier wave of the base station with the target terminal in the unlicensed spectrum is corresponding
MCS；Transmitting element authorizes frequency spectrum by the information of at least one carrier wave and opposite at least one carrier wave for passing through
The MCS answered is sent to the target terminal, so that the target terminal is arranged on any carrier wave at least one carrier wave
MCS during upper work.
In the technical scheme, by according to current in unlicensed spectrum between base station and target terminal and/or going through
History channel conditions determine the corresponding MCS of at least one carrier wave of the base station with target terminal in unlicensed spectrum, and pass through mandate
Frequency spectrum is sent to target terminal by the information of at least one carrier wave and with the corresponding MCS of at least one carrier wave so that target is whole
End can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that the transmitting element is additionally operable to, periodically or aperiodically by described
Frequency spectrum is authorized to send the fresh information at least one corresponding MCS of carrier wave to the target terminal.
In the technical scheme, can be set according to actual conditions periodically or aperiodically by authorizing frequency spectrum to mesh
Mark terminal transmission and the fresh information of the corresponding MCS of each carrier wave at least one carrier wave so that terminal can in time more
The MCS when working at least one carrier wave of unlicensed spectrum newly stored arrives most suitable MCS into line number to ensure to choose
According to transmission.
In any of the above-described technical solution, it is preferable that further include：Setting unit, for based on the target terminal
Translational speed sets the time interval that the fresh information is sent to the target terminal, is specifically used for：In the target terminal
During in quasi- stationary state, increase the time interval that the fresh information is sent to the target terminal, and it is whole in the target
When end is in non-quasi- stationary state, reduce the time interval that the fresh information is sent to the target terminal.
In the technical scheme, the variation of terminal location may cause the change of channel conditions, especially in terminal
When translational speed is very fast, the channel conditions between base station change faster, so the translational speed for passing through target terminal is set
The time interval of fresh information is sent to target terminal, enabling ensure at least one with unlicensed spectrum of terminal storage
The corresponding MCS of carrier wave is in last state, to ensure that terminal selection carries out data transmission to most suitable MCS, so that it is guaranteed that
The MCS of selection is capable of the data transmission and channel conditions of preferably reflexless terminal.
Specifically, it is whole to target by increase when target terminal is in quasi- stationary state (such as low speed is mobile, interior)
End sends the time interval of fresh information so that when channel status is more stable, can extend renewal time interval, to reduce
The operation burden of base station；It is whole to target by reducing when target terminal is in non-quasi- stationary state (such as high speed moves)
End sends the time interval of fresh information so that when channel status fluctuation is larger, can shorten renewal time interval, to ensure
Terminal storage is in last state at least one carrier wave corresponding MCS moment of unlicensed spectrum.
According to the fourth aspect of the invention, it is also proposed that a kind of device that MCS is set in an unlicensed spectrum, suitable for end
End, including：Receiving unit, for receiving the letter of at least one carrier wave in unlicensed spectrum of the base station by authorizing frequency spectrum transmission
Breath and at least one corresponding MCS of carrier wave；Processing unit, for terminal needs be operated in it is described extremely
When on any carrier wave in a few carrier wave, determined and any load according to at least one corresponding MCS of carrier wave
The corresponding MCS of ripple, and the terminal is set on any carrier wave according to any carrier wave corresponding MCS
MCS；Wherein, MCS corresponding at least one carrier wave is according to the unauthorized frequency between the terminal by the base station
What the current and/or historical channel situation in spectrum determined.
In the technical scheme, by according at least one in unlicensed spectrum of the reception base station by authorizing frequency spectrum transmission
The information of a carrier wave and with the corresponding MCS of at least one carrier wave, and need in terminal to be operated in above-mentioned at least one carrier wave
In any carrier wave on when, MCS of the terminal on any carrier wave is set according to MCS corresponding with any carrier wave so that target
Terminal can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that the receiving unit is additionally operable to：Described in periodically or aperiodically receiving
The fresh information at least one corresponding MCS of carrier wave that base station is sent by the mandate frequency spectrum.
In the technical scheme, base station can be periodically or aperiodically received according to actual conditions by authorizing frequency spectrum
Send the fresh information with the corresponding MCS of each carrier wave so that terminal can upgrade in time storage in unlicensed spectrum
At least one carrier wave on MCS when working, carried out data transmission with ensuring to choose to most suitable MCS.
By above technical scheme, solve terminal in correlation technique and occupy unlicensed spectrum channel transmission data because continuous
And the problem of MCS can not be adaptively adjusted, it is ensured that the MCS that terminal is used in lasting occupancy unlicensed spectrum transmission data
It is capable of the data transmission and channel conditions of preferably reflexless terminal.
Description of the drawings
Fig. 1 shows the exemplary flow of the method according to an embodiment of the invention for setting MCS in an unlicensed spectrum
Figure；
Fig. 2 shows the signal stream of the method in accordance with another embodiment of the present invention for setting MCS in an unlicensed spectrum
Cheng Tu；
Fig. 3 shows the schematic block of the device according to an embodiment of the invention for setting MCS in an unlicensed spectrum
Figure；
Fig. 4 shows the signal of the device for setting MCS in an unlicensed spectrum according to another embodiment of the invention
Block diagram.
Specific embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below
Specific embodiment limitation.
Fig. 1 shows the exemplary flow of the method according to an embodiment of the invention for setting MCS in an unlicensed spectrum
Figure.
As shown in Figure 1, the method according to an embodiment of the invention that MCS is set in an unlicensed spectrum, suitable for base
It stands, including：
Step 102, the current and/or historical channel shape in unlicensed spectrum between the base station and target terminal is obtained
Condition；
Step 104, believed according to the current and/or history between the base station and the target terminal in unlicensed spectrum
Road situation determines the corresponding MCS of at least one carrier wave of the base station with the target terminal in the unlicensed spectrum；
Step 106, by authorizing frequency spectrum by the information of at least one carrier wave and opposite at least one carrier wave
The MCS answered is sent to the target terminal, so that the target terminal is arranged on any carrier wave at least one carrier wave
MCS during upper work.
In the technical scheme, by according to current in unlicensed spectrum between base station and target terminal and/or going through
History channel conditions determine the corresponding MCS of at least one carrier wave of the base station with target terminal in unlicensed spectrum, and pass through mandate
Frequency spectrum is sent to target terminal by the information of at least one carrier wave and with the corresponding MCS of at least one carrier wave so that target is whole
End can be in time adjusted according to the MCS received when working on any carrier wave being arranged at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.The corresponding MCS of at least one carrier wave is specific
Refer to：Each carrier wave at least one carrier wave is corresponding with MCS.
In the above-mentioned technical solutions, it is preferable that further include：Periodically or aperiodically frequency spectrum is authorized to institute by described
State target terminal transmission and the fresh information of at least one corresponding MCS of carrier wave.
In the technical scheme, can be set according to actual conditions periodically or aperiodically by authorizing frequency spectrum to mesh
Mark terminal transmission and the fresh information of the corresponding MCS of each carrier wave at least one carrier wave so that terminal can in time more
The MCS when working at least one carrier wave of unlicensed spectrum newly stored arrives most suitable MCS into line number to ensure to choose
According to transmission.
In any of the above-described technical solution, it is preferable that the translational speed based on the target terminal is set to the mesh
The time interval that terminal sends the fresh information is marked, is specifically included：When the target terminal is in quasi- stationary state, increase
The time interval of the fresh information is sent to the target terminal；And it is in non-quasi- stationary state in the target terminal
When, reduce the time interval that the fresh information is sent to the target terminal.
In the technical scheme, the variation of terminal location may cause the change of channel conditions, especially in terminal
When translational speed is very fast, the channel conditions between base station change faster, so the translational speed for passing through target terminal is set
The time interval of fresh information is sent to target terminal, enabling ensure at least one with unlicensed spectrum of terminal storage
The corresponding MCS of carrier wave is in last state, to ensure that terminal selection carries out data transmission to most suitable MCS, so that it is guaranteed that
The MCS of selection is capable of the data transmission and channel conditions of preferably reflexless terminal.
Specifically, it is whole to target by increase when target terminal is in quasi- stationary state (such as low speed is mobile, interior)
End sends the time interval of fresh information so that when channel status is more stable, can extend renewal time interval, to reduce
The operation burden of base station；It is whole to target by reducing when target terminal is in non-quasi- stationary state (such as high speed moves)
End sends the time interval of fresh information so that when channel status fluctuation is larger, can shorten renewal time interval, to ensure
Terminal storage is in last state at least one carrier wave corresponding MCS moment of unlicensed spectrum.
Fig. 2 shows the signal stream of the method in accordance with another embodiment of the present invention for setting MCS in an unlicensed spectrum
Cheng Tu.
As shown in Fig. 2, the method in accordance with another embodiment of the present invention for setting MCS in an unlicensed spectrum, is suitable for
Terminal, including：
Step 202, the information of at least one carrier wave in unlicensed spectrum of the base station by authorizing frequency spectrum transmission is received, with
And at least one corresponding MCS of carrier wave；
Step 204, when being needed in the terminal on any carrier wave being operated at least one carrier wave, according to institute
State the corresponding MCS of at least one carrier wave determine with any corresponding MCS of carrier wave, and according to any carrier wave phase
Corresponding MCS sets MCS of the terminal on any carrier wave；Wherein, MCS corresponding at least one carrier wave is
It is determined by the base station according to the current and/or historical channel situation in the unlicensed spectrum between the terminal.
In the technical scheme, by according at least one in unlicensed spectrum of the reception base station by authorizing frequency spectrum transmission
The information of a carrier wave and with the corresponding MCS of at least one carrier wave, and need in terminal to be operated in above-mentioned at least one carrier wave
In any carrier wave on when, MCS of the terminal on any carrier wave is set according to MCS corresponding with any carrier wave so that target
Terminal can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that periodically or aperiodically receive the base station and authorize frequency by described
Compose the fresh information at least one corresponding MCS of carrier wave sent.
In the technical scheme, base station can be periodically or aperiodically received according to actual conditions by authorizing frequency spectrum
Send the fresh information with the corresponding MCS of each carrier wave so that terminal can upgrade in time storage in unlicensed spectrum
At least one carrier wave on MCS when working, carried out data transmission with ensuring to choose to most suitable MCS.
Fig. 3 shows the schematic block of the device according to an embodiment of the invention for setting MCS in an unlicensed spectrum
Figure.
As shown in figure 3, the device 300 according to an embodiment of the invention for setting MCS in an unlicensed spectrum, is applicable in
In base station, including：Acquiring unit 302, determination unit 304, transmitting element 306.
Wherein, acquiring unit 302, it is current in unlicensed spectrum between the base station and target terminal for obtaining
And/or historical channel situation；Determination unit 304, for according between the base station and the target terminal in unlicensed spectrum
On current and/or historical channel situation, determine the base station and the target terminal in the unlicensed spectrum at least
The corresponding MCS of one carrier wave；Transmitting element 306, for pass through authorize frequency spectrum by the information of at least one carrier wave and with institute
It states the corresponding MCS of at least one carrier wave and is sent to the target terminal, so that the target terminal is arranged on described at least one
MCS when working on any carrier wave in a carrier wave.
In the technical scheme, by according to current in unlicensed spectrum between base station and target terminal and/or going through
History channel conditions determine the corresponding MCS of at least one carrier wave of the base station with target terminal in unlicensed spectrum, and pass through mandate
Frequency spectrum is sent to target terminal by the information of at least one carrier wave and with the corresponding MCS of at least one carrier wave so that target is whole
End can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that the transmitting element 306 is additionally operable to, and is periodically or aperiodically passed through
It is described that frequency spectrum is authorized to send the fresh information at least one corresponding MCS of carrier wave to the target terminal.
In the technical scheme, can be set according to actual conditions periodically or aperiodically by authorizing frequency spectrum to mesh
Terminal is marked to send and the fresh information of the corresponding MCS of each carrier wave so that terminal can upgrade in time storage unauthorized
MCS when working at least one carrier wave of frequency spectrum is carried out data transmission with ensuring to choose to most suitable MCS.
In any of the above-described technical solution, it is preferable that further include：Setting unit 308, for being based on the target terminal
Translational speed the time interval that the fresh information is sent to the target terminal is set, be specifically used for：It is whole in the target
When end is in quasi- stationary state, increase the time interval that the fresh information is sent to the target terminal, and in the target
When terminal is in non-quasi- stationary state, reduce the time interval that the fresh information is sent to the target terminal.
In the technical scheme, the variation of terminal location may cause the change of channel conditions, especially in terminal
When translational speed is very fast, the channel conditions between base station change faster, so the translational speed for passing through target terminal is set
The time interval of fresh information is sent to target terminal, enabling ensure at least one with unlicensed spectrum of terminal storage
The corresponding MCS of carrier wave is in last state, to ensure that terminal selection carries out data transmission to most suitable MCS, so that it is guaranteed that
The MCS of selection is capable of the data transmission and channel conditions of preferably reflexless terminal.
Specifically, it is whole to target by increase when target terminal is in quasi- stationary state (such as low speed is mobile, interior)
End sends the time interval of fresh information so that when channel status is more stable, can extend renewal time interval, to reduce
The operation burden of base station；It is whole to target by reducing when target terminal is in non-quasi- stationary state (such as high speed moves)
End sends the time interval of fresh information so that when channel status fluctuation is larger, can shorten renewal time interval, to ensure
Terminal storage is in last state at least one carrier wave corresponding MCS moment of unlicensed spectrum.
The invention also provides a kind of base station, including：The device of MCS is set in an unlicensed spectrum as shown in Figure 3
300。
Fig. 4 shows the signal of the device for setting MCS in an unlicensed spectrum according to another embodiment of the invention
Block diagram.
As shown in figure 4, the device 400 for setting MCS in an unlicensed spectrum according to another embodiment of the invention, is fitted
For terminal, including：Receiving unit 402 and processing unit 404.
Wherein, receiving unit 402, it is at least one in the unlicensed spectrum that frequency spectrum is sent by authorizing for receiving base station
The information of carrier wave and at least one corresponding MCS of carrier wave；Processing unit 404, for needing work in the terminal
When making on any carrier wave at least one carrier wave, according to at least one corresponding MCS of carrier wave determine with
The corresponding MCS of any carrier wave, and the terminal is set described any according to any carrier wave corresponding MCS
MCS on carrier wave；Wherein, MCS corresponding at least one carrier wave is according between the terminal by the base station
What the current and/or historical channel situation in unlicensed spectrum determined.
In the technical scheme, by according at least one in unlicensed spectrum of the reception base station by authorizing frequency spectrum transmission
The information of a carrier wave and with the corresponding MCS of at least one carrier wave, and need in terminal to be operated in above-mentioned at least one carrier wave
In any carrier wave on when, MCS of the terminal on any carrier wave is set according to MCS corresponding with any carrier wave so that target
Terminal can be in time adjusted according to the MCS received when working on any carrier wave being arranged in above-mentioned at least one carrier wave
MCS such as when channel conditions are preferable, using the MCS of higher-order, improves data transmission efficiency, when channel conditions are poor, uses
The MCS of lower-order reduces bit error rate during data transmission, solves terminal in correlation technique and occupies unlicensed spectrum because continuous
Channel transmission data and the problem of MCS can not be adaptively adjusted, it is ensured that terminal is in lasting occupancy unlicensed spectrum transmission data
The MCS of Shi Caiyong is capable of the data transmission and channel conditions of preferably reflexless terminal.
In the above-mentioned technical solutions, it is preferable that the receiving unit 402 is additionally operable to：Periodically or aperiodically receive
The fresh information at least one corresponding MCS of carrier wave that the base station is sent by the mandate frequency spectrum.
In the technical scheme, base station can be periodically or aperiodically received according to actual conditions by authorizing frequency spectrum
Send the fresh information with the corresponding MCS of each carrier wave so that terminal can upgrade in time storage in unlicensed spectrum
At least one carrier wave on MCS when working, carried out data transmission with ensuring to choose to most suitable MCS.
The invention also provides a kind of terminal, including：The device of MCS is set in an unlicensed spectrum as shown in Figure 4
400。
Technical scheme is described in detail above in association with attached drawing, and the present invention proposes a kind of new in unauthorized frequency
The scheme of MCS is set in spectrum, and solving in correlation technique terminal can not when continuously occupying unlicensed spectrum channel transmission data
The problem of being adaptively adjusted MCS, it is ensured that terminal can be certainly during unlicensed spectrum channel transmission data is continuously occupied
MCS is adaptively adjusted, ensures that the MCS that terminal is used in lasting occupancy unlicensed spectrum transmission data can be preferably
The data transmission and channel conditions of reflexless terminal.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method that modulation coding scheme MCS is set in an unlicensed spectrum, suitable for base station, which is characterized in that including：
Obtain the current and/or historical channel situation in unlicensed spectrum between the base station and target terminal；
According to the current and/or historical channel situation between the base station and the target terminal in unlicensed spectrum, determine
The corresponding MCS of at least one carrier wave of the base station with the target terminal in the unlicensed spectrum；
By the way that frequency spectrum is authorized to be sent to by the information of at least one carrier wave and at least one corresponding MCS of carrier wave
The target terminal, MCS when working on any carrier wave being arranged on for the target terminal at least one carrier wave.
2. the method according to claim 1 that MCS is set in an unlicensed spectrum, which is characterized in that further include：
Periodically or aperiodically sent and at least one carrier wave phase to the target terminal by the mandate frequency spectrum
The fresh information of corresponding MCS.
3. the method according to claim 2 that MCS is set in an unlicensed spectrum, which is characterized in that based on the target
The translational speed of terminal sets the time interval that the fresh information is sent to the target terminal, specifically includes：
When the target terminal is in quasi- stationary state, increase between the time that the target terminal sends the fresh information
Every；And
When the target terminal is in non-quasi- stationary state, reduce the time that the fresh information is sent to the target terminal
Interval；
Wherein, the quasi- stationary state includes：The target terminal is in low mobility state, the non-quasi- stationary state bag
It includes：The target terminal is in high speed mobile status.
4. a kind of method that modulation coding scheme MCS is set in an unlicensed spectrum, suitable for terminal, which is characterized in that including：
Receive base station by authorize frequency spectrum send unlicensed spectrum at least one carrier wave information and with it is described at least
One corresponding MCS of carrier wave；
When the terminal is needed on any carrier wave being operated at least one carrier wave, according to at least one load
The corresponding MCS of ripple determine with any corresponding MCS of carrier wave, and set according to any corresponding MCS of carrier wave
Put MCS of the terminal on any carrier wave；
Wherein, MCS corresponding at least one carrier wave is according to the unauthorized frequency between the terminal by the base station
What the current and/or historical channel situation in spectrum determined.
5. the method according to claim 4 that MCS is set in an unlicensed spectrum, which is characterized in that periodical or non-week
The base station is received to phase property by the update at least one corresponding MCS of carrier wave that the mandate frequency spectrum is sent to believe
Breath.
6. a kind of device that modulation coding scheme MCS is set in an unlicensed spectrum, suitable for base station, which is characterized in that including：
Acquiring unit, for obtaining the current and/or historical channel between the base station and target terminal in unlicensed spectrum
Situation；
Determination unit, for according to the current and/or history between the base station and the target terminal in unlicensed spectrum
Channel conditions determine the corresponding MCS of at least one carrier wave of the base station with the target terminal in the unlicensed spectrum；
Transmitting element authorizes frequency spectrum by the information of at least one carrier wave and opposite at least one carrier wave for passing through
The MCS answered is sent to the target terminal, so that the target terminal is arranged on any carrier wave at least one carrier wave
MCS during upper work.
7. the device according to claim 6 that MCS is set in an unlicensed spectrum, which is characterized in that the transmitting element
It is additionally operable to, is periodically or aperiodically sent and at least one carrier wave to the target terminal by the mandate frequency spectrum
The fresh information of corresponding MCS.
8. the device according to claim 7 that MCS is set in an unlicensed spectrum, which is characterized in that further include：
Setting unit sets to the target terminal for the translational speed based on the target terminal and sends the fresh information
Time interval, be specifically used for：
When the target terminal is in quasi- stationary state, increase between the time that the target terminal sends the fresh information
Every, and when the target terminal is in non-quasi- stationary state, reduce to the target terminal send the fresh information when
Between be spaced；
Wherein, the quasi- stationary state includes：The target terminal is in low mobility state, the non-quasi- stationary state bag
It includes：The target terminal is in high speed mobile status.
9. a kind of device that modulation coding scheme MCS is set in an unlicensed spectrum, suitable for terminal, which is characterized in that including：
Receiving unit, for receiving the information of at least one carrier wave in unlicensed spectrum of the base station by authorizing frequency spectrum transmission,
And at least one corresponding MCS of carrier wave；
Processing unit, for when the terminal is needed on any carrier wave being operated at least one carrier wave, according to
The corresponding MCS of at least one carrier wave determine with any corresponding MCS of carrier wave, and according to any carrier wave
Corresponding MCS sets MCS of the terminal on any carrier wave；
Wherein, MCS corresponding at least one carrier wave is according to the unauthorized frequency between the terminal by the base station
What the current and/or historical channel situation in spectrum determined.
10. the device according to claim 9 that MCS is set in an unlicensed spectrum, which is characterized in that the receiving unit
It is additionally operable to：It periodically or aperiodically receives the base station and passes through the mandate frequency spectrum transmission and at least one carrier wave
The fresh information of corresponding MCS.
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| CN106856423B (en) * | 2015-12-09 | 2019-07-23 | 普天信息技术有限公司 | A kind of acquisition methods and device of terminal carrier polymerization frequency point number and uplink MCS grade |
| CN109906590B (en) * | 2016-10-29 | 2021-02-23 | 华为技术有限公司 | Method and system for access to unlicensed spectrum by transmission points |
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