CN105119693A - Method and device for setting MCS in unlicensed spectrum - Google Patents
Method and device for setting MCS in unlicensed spectrum Download PDFInfo
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- CN105119693A CN105119693A CN201510564183.4A CN201510564183A CN105119693A CN 105119693 A CN105119693 A CN 105119693A CN 201510564183 A CN201510564183 A CN 201510564183A CN 105119693 A CN105119693 A CN 105119693A
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- mcs
- carrier wave
- 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
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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
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
Abstract
The invention provides a method and a device for setting an MCS in an unlicensed spectrum. The method used for setting the MCS in the unlicensed spectrum and suitable for a base station comprises the steps: acquiring a current and/or historical communication channel condition between the base station and a target terminal on the unlicensed spectrum; determining an MCS corresponding to at least one carrier of the base station and the target terminal on the unlicensed spectrum according to the current and/or historical communication channel condition between the base station and the target terminal on the unlicensed spectrum; and transmitting information of the at least one carrier and the MCS corresponding to the at least one carrier to the target terminal through a licensed spectrum to allow the target terminal to set an MCS during working on any carrier in the at least one carrier. Through the adoption of the technical scheme of the invention, a problem that the terminal cannot adjust the MCS in a self-adaptive manner due to continuous occupation of the unlicensed spectrum in a related technology is solved, and a situation that an adopted MCS can be well matched with data transmission of the terminal and a communication channel condition when the terminal continuously occupies the unlicensed spectrum to transmit data is ensured.
Description
Technical field
The present invention relates to communication technical field, the method for MCS and a kind of device arranging MCS are in an unlicensed spectrum set in an unlicensed spectrum in particular to a kind of.
Background technology
3GPP normal structure have passed based on LTE (LongTermEvolution in TSGRAN#65 plenary session, Long Term Evolution) LAA (Licensed-AssistedAccess, auxiliary access) research project project verification, this project mainly studies how to dispose LTE network in unlicensed spectrum, thus reach justice and effectively utilize unlicensed spectrum, improve the object of the message transmission rate of LTE system.
The use of LTE to unlicensed spectrum has two kinds of modes, Yi Zhongshi: only use unlicensed spectrum when downlink data transmission; Another kind is: all can use unlicensed spectrum when uplink and downlink transfer of data, the multiplexing in a time division manner mode of uplink and downlink is on same unauthorized carrier wave, this kind of time division multiplexing mode TDD (TimeDivisionDuplexing) pattern be different from LTE, uplink and downlink are specific frame structure not, and any moment all likely carries out uplink or downlink transfer.It should be noted that, in LTE network, authorize frequency spectrum and unlicensed spectrum to be can be combined by the mode being similar to carrier aggregation, namely terminal, an eNodeB (EvolvedNodeB, evolved NodeB) may be operated in simultaneously authorize in frequency spectrum and unlicensed spectrum.
When being operated in unlicensed spectrum, eNodeB in LAA system or terminal are before transmitting data, need first to carry out Channel Detection, i.e. CCA (ClearChannelAccess, clear channel assessment (CCA)) detect, when detecting that channel is in idle condition, data could be sent by busy channel; When channel busy being detected, then can not busy channel.
In the transmitting procedure of data, for being deployed in the LTE system of authorizing in frequency range, general employing be dynamic dispatching mode, namely eNodeB is at every turn when sending UL-grant (upstream dispatching instructions) to terminal, capital comprises the MCS (ModulationandCodingScheme for this terminal in UL-grant, modulation coding mode) information, terminal often receives the UL-grant instruction that eNodeB sends, the data after carrying out modulating-coding according to MCS information will be sent in that subframe (a subframe time length is 1 millisecond) corresponding with UL-grant.Under normal circumstances, the MCS information that terminal can adopt is relevant with the channel condition between terminal and eNodeB, and when channel conditions are good, terminal can adopt the modulation system of more high-order and the coded system of Geng Gao code check, thus improves the availability of frequency spectrum of channel; When channel conditions are poor, terminal can use the modulation coding mode of lower-order and the coded system compared with low bit-rate, to ensure that the error rate of transfer of data is lower than setting threshold value.Therefore in order to match channels situation better, LTE system can use the UL-grant instruction dynamically indicating terminal MCS that should adopt when sending data, the MCS adopted when terminal then dynamically upgrades send data according to UL-grant instruction.
In the related, in order to improve the channel utilization in unlicensed spectrum, the data receiver formula that in LAA system, terminal may adopt is: after CCA detection channel can be used, can continue to take this channel within a period of time (such as 10ms), namely eNodeB scheduling once, terminal transmission data continues multiple subframe, and is no longer the dynamic dispatching mode of authorizing frequency range LTE to adopt.
A problem can be related to: because eNodeB only gives a UL-grant in the process of lasting busy channel, terminal is its MCS adopted when transmitting data of adaptive adjustment in the data transmission procedure of continuous time how, does not also have effective solution at present for this problem.
Therefore, the technical problem that terminal can adjust MCS adaptively and becomes urgently to be resolved hurrily in the process taking unlicensed spectrum channel transmission data continuously can how be guaranteed.
Summary of the invention
The present invention just based on above-mentioned technical problem one of at least, propose a kind of scheme that MCS is set in an unlicensed spectrum newly, solving terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, ensure that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In view of this, the present invention proposes a kind of method that MCS is set in an unlicensed spectrum, be applicable to base station, comprise: obtain the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum; According to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determine the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding; By authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, be arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
In this technical scheme, by according to the current and/or historical channel situation between base station and target terminal in unlicensed spectrum, determine the MCS that base station and target terminal at least one carrier wave in unlicensed spectrum is corresponding, and by authorizing frequency spectrum that the information of at least one carrier wave and the MCS corresponding with at least one carrier wave are sent to target terminal, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.Wherein, the MCS that at least one carrier wave is corresponding specifically refers to: each carrier wave at least one carrier wave is all to having MCS.
In technique scheme, preferably, also comprise: the lastest imformation periodically or aperiodically being sent the MCS corresponding with at least one carrier wave described by described mandate frequency spectrum to described target terminal.
In this technical scheme, can arrange periodically or aperiodically by authorizing frequency spectrum to send the lastest imformation of the MCS corresponding with each carrier wave at least one carrier wave to target terminal according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
In above-mentioned any one technical scheme, preferably, translational speed based on described target terminal arranges the time interval sending described lastest imformation to described target terminal, specifically comprise: when described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal; And when described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
In this technical scheme, the variation of terminal location may cause the change of channel conditions, especially when the translational speed of terminal is very fast, channel conditions change between itself and base station is faster, so arranged the time interval sending lastest imformation to target terminal by the translational speed of target terminal, make it possible to ensure that the MCS corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state, to guarantee that terminal is chosen most suitable MCS and carried out transfer of data, thus guarantee that the MCS that selects can the transfer of data of matched termination and channel conditions better.
Particularly, target terminal be in accurate inactive state (as low speed move, indoor etc.) time, by increasing the time interval sending lastest imformation to target terminal, make when channel status is more stable, interval update time can be extended, to reduce the operation burden of base station; When target terminal is in non-accurate inactive state (as high speed moves), by reducing the time interval sending lastest imformation to target terminal, make when channel status fluctuation is larger, interval update time can be shortened, to guarantee that the MCS moment corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state.
According to a second aspect of the invention, also proposed a kind of method that MCS is set in an unlicensed spectrum, being applicable to terminal, comprising: receiving base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described; When described terminal needs to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave; Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
In this technical scheme, by passing through the information of at least one carrier wave in the unlicensed spectrum of mandate frequency spectrum transmission according to reception base station, and the MCS corresponding with at least one carrier wave, and when terminal needs to be operated on the arbitrary carrier wave at least one carrier wave above-mentioned, according to the MCS corresponding with arbitrary carrier wave, the MCS of terminal on arbitrary carrier wave is set, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, the lastest imformation of the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum is periodically or aperiodically received.
In this technical scheme, base station can be periodically or aperiodically received by authorizing the lastest imformation of the MCS corresponding with each carrier wave of frequency spectrum transmission according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
According to a third aspect of the invention we, also proposed a kind of device that MCS is set in an unlicensed spectrum, be applicable to base station, comprise: acquiring unit, for obtaining the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum; Determining unit, for according to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determines the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding; Transmitting element, for by authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, be arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
In this technical scheme, by according to the current and/or historical channel situation between base station and target terminal in unlicensed spectrum, determine the MCS that base station and target terminal at least one carrier wave in unlicensed spectrum is corresponding, and by authorizing frequency spectrum that the information of at least one carrier wave and the MCS corresponding with at least one carrier wave are sent to target terminal, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, described transmitting element also for, periodically or aperiodically sent the lastest imformation of the MCS corresponding with at least one carrier wave described to described target terminal by described mandate frequency spectrum.
In this technical scheme, can arrange periodically or aperiodically by authorizing frequency spectrum to send the lastest imformation of the MCS corresponding with each carrier wave at least one carrier wave to target terminal according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
In above-mentioned any one technical scheme, preferably, also comprise: setting unit, for arranging the time interval sending described lastest imformation to described target terminal based on the translational speed of described target terminal, specifically for: when described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal, and when described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
In this technical scheme, the variation of terminal location may cause the change of channel conditions, especially when the translational speed of terminal is very fast, channel conditions change between itself and base station is faster, so arranged the time interval sending lastest imformation to target terminal by the translational speed of target terminal, make it possible to ensure that the MCS corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state, to guarantee that terminal is chosen most suitable MCS and carried out transfer of data, thus guarantee that the MCS that selects can the transfer of data of matched termination and channel conditions better.
Particularly, target terminal be in accurate inactive state (as low speed move, indoor etc.) time, by increasing the time interval sending lastest imformation to target terminal, make when channel status is more stable, interval update time can be extended, to reduce the operation burden of base station; When target terminal is in non-accurate inactive state (as high speed moves), by reducing the time interval sending lastest imformation to target terminal, make when channel status fluctuation is larger, interval update time can be shortened, to guarantee that the MCS moment corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state.
According to a forth aspect of the invention, also proposed a kind of device that MCS is set in an unlicensed spectrum, be applicable to terminal, comprise: receiving element, for receiving base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described; Processing unit, during for needing in described terminal to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave; Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
In this technical scheme, by passing through the information of at least one carrier wave in the unlicensed spectrum of mandate frequency spectrum transmission according to reception base station, and the MCS corresponding with at least one carrier wave, and when terminal needs to be operated on the arbitrary carrier wave at least one carrier wave above-mentioned, according to the MCS corresponding with arbitrary carrier wave, the MCS of terminal on arbitrary carrier wave is set, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, described receiving element is also for the lastest imformation that periodically or aperiodically receives the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum.
In this technical scheme, base station can be periodically or aperiodically received by authorizing the lastest imformation of the MCS corresponding with each carrier wave of frequency spectrum transmission according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
By above technical scheme, solving terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, ensure that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
Accompanying drawing explanation
Fig. 1 shows the schematic flow diagram of the method arranging MCS according to an embodiment of the invention in an unlicensed spectrum;
Fig. 2 shows the schematic flow diagram of the method arranging MCS in accordance with another embodiment of the present invention in an unlicensed spectrum;
Fig. 3 shows the schematic block diagram arranging the device of MCS in an unlicensed spectrum according to an embodiment of the invention;
Fig. 4 shows the schematic block diagram arranging the device of MCS in an unlicensed spectrum according to another embodiment of the invention.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow diagram of the method arranging MCS according to an embodiment of the invention in an unlicensed spectrum.
As shown in Figure 1, the method for MCS is set according to an embodiment of the invention in an unlicensed spectrum, is applicable to base station, comprising:
Step 102, obtains the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum;
Step 104, according to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determines the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding;
Step 106, by authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, is arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
In this technical scheme, by according to the current and/or historical channel situation between base station and target terminal in unlicensed spectrum, determine the MCS that base station and target terminal at least one carrier wave in unlicensed spectrum is corresponding, and by authorizing frequency spectrum that the information of at least one carrier wave and the MCS corresponding with at least one carrier wave are sent to target terminal, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave described works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.The MCS that at least one carrier wave is corresponding specifically refers to: each carrier wave at least one carrier wave is all to having MCS.
In technique scheme, preferably, also comprise: the lastest imformation periodically or aperiodically being sent the MCS corresponding with at least one carrier wave described by described mandate frequency spectrum to described target terminal.
In this technical scheme, can arrange periodically or aperiodically by authorizing frequency spectrum to send the lastest imformation of the MCS corresponding with each carrier wave at least one carrier wave to target terminal according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
In above-mentioned any one technical scheme, preferably, translational speed based on described target terminal arranges the time interval sending described lastest imformation to described target terminal, specifically comprise: when described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal; And when described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
In this technical scheme, the variation of terminal location may cause the change of channel conditions, especially when the translational speed of terminal is very fast, channel conditions change between itself and base station is faster, so arranged the time interval sending lastest imformation to target terminal by the translational speed of target terminal, make it possible to ensure that the MCS corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state, to guarantee that terminal is chosen most suitable MCS and carried out transfer of data, thus guarantee that the MCS that selects can the transfer of data of matched termination and channel conditions better.
Particularly, target terminal be in accurate inactive state (as low speed move, indoor etc.) time, by increasing the time interval sending lastest imformation to target terminal, make when channel status is more stable, interval update time can be extended, to reduce the operation burden of base station; When target terminal is in non-accurate inactive state (as high speed moves), by reducing the time interval sending lastest imformation to target terminal, make when channel status fluctuation is larger, interval update time can be shortened, to guarantee that the MCS moment corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state.
Fig. 2 shows the schematic flow diagram of the method arranging MCS in accordance with another embodiment of the present invention in an unlicensed spectrum.
As shown in Figure 2, the method for MCS is set in accordance with another embodiment of the present invention in an unlicensed spectrum, is applicable to terminal, comprising:
Step 202, receives base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described;
Step 204, when described terminal needs to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave; Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
In this technical scheme, by passing through the information of at least one carrier wave in the unlicensed spectrum of mandate frequency spectrum transmission according to reception base station, and the MCS corresponding with at least one carrier wave, and when terminal needs to be operated on the arbitrary carrier wave at least one carrier wave above-mentioned, according to the MCS corresponding with arbitrary carrier wave, the MCS of terminal on arbitrary carrier wave is set, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, the lastest imformation of the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum is periodically or aperiodically received.
In this technical scheme, base station can be periodically or aperiodically received by authorizing the lastest imformation of the MCS corresponding with each carrier wave of frequency spectrum transmission according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
Fig. 3 shows the schematic block diagram arranging the device of MCS in an unlicensed spectrum according to an embodiment of the invention.
As shown in Figure 3, the device 300 arranging MCS in an unlicensed spectrum according to an embodiment of the invention, is applicable to base station, comprises: acquiring unit 302, determining unit 304, transmitting element 306.
Wherein, acquiring unit 302, for obtaining the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum; Determining unit 304, for according to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determines the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding; Transmitting element 306, for by authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, be arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
In this technical scheme, by according to the current and/or historical channel situation between base station and target terminal in unlicensed spectrum, determine the MCS that base station and target terminal at least one carrier wave in unlicensed spectrum is corresponding, and by authorizing frequency spectrum that the information of at least one carrier wave and the MCS corresponding with at least one carrier wave are sent to target terminal, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, described transmitting element 306 also for, periodically or aperiodically sent the lastest imformation of the MCS corresponding with at least one carrier wave described to described target terminal by described mandate frequency spectrum.
In this technical scheme, can arrange periodically or aperiodically by authorizing frequency spectrum to send the lastest imformation of the MCS corresponding with each carrier wave to target terminal according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
In above-mentioned any one technical scheme, preferably, also comprise: setting unit 308, for arranging the time interval sending described lastest imformation to described target terminal based on the translational speed of described target terminal, specifically for: when described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal, and when described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
In this technical scheme, the variation of terminal location may cause the change of channel conditions, especially when the translational speed of terminal is very fast, channel conditions change between itself and base station is faster, so arranged the time interval sending lastest imformation to target terminal by the translational speed of target terminal, make it possible to ensure that the MCS corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state, to guarantee that terminal is chosen most suitable MCS and carried out transfer of data, thus guarantee that the MCS that selects can the transfer of data of matched termination and channel conditions better.
Particularly, target terminal be in accurate inactive state (as low speed move, indoor etc.) time, by increasing the time interval sending lastest imformation to target terminal, make when channel status is more stable, interval update time can be extended, to reduce the operation burden of base station; When target terminal is in non-accurate inactive state (as high speed moves), by reducing the time interval sending lastest imformation to target terminal, make when channel status fluctuation is larger, interval update time can be shortened, to guarantee that the MCS moment corresponding with at least one carrier wave of unlicensed spectrum of terminal storage is in last state.
The invention allows for a kind of base station, comprising: the device 300 that MCS is set as shown in Figure 3 in an unlicensed spectrum.
Fig. 4 shows the schematic block diagram arranging the device of MCS in an unlicensed spectrum according to another embodiment of the invention.
As shown in Figure 4, the device 400 arranging MCS in an unlicensed spectrum according to another embodiment of the invention, is applicable to terminal, comprises: receiving element 402 and processing unit 404.
Wherein, receiving element 402, for receiving base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described; Processing unit 404, during for needing in described terminal to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave; Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
In this technical scheme, by passing through the information of at least one carrier wave in the unlicensed spectrum of mandate frequency spectrum transmission according to reception base station, and the MCS corresponding with at least one carrier wave, and when terminal needs to be operated on the arbitrary carrier wave at least one carrier wave above-mentioned, according to the MCS corresponding with arbitrary carrier wave, the MCS of terminal on arbitrary carrier wave is set, make target terminal can adjust MCS when arbitrary carrier wave of being arranged at least one carrier wave above-mentioned works in time according to the MCS received, as when channel conditions is better, adopt the MCS of higher-order, improve data transmission efficiency, when channel conditions is poor, adopt the MCS of lower-order, reduce error rate during transfer of data, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
In technique scheme, preferably, described receiving element 402 is also for the lastest imformation that periodically or aperiodically receives the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum.
In this technical scheme, base station can be periodically or aperiodically received by authorizing the lastest imformation of the MCS corresponding with each carrier wave of frequency spectrum transmission according to actual conditions, make terminal can upgrade in time store working at least one carrier wave of unlicensed spectrum time MCS, to guarantee that choosing most suitable MCS carries out transfer of data.
The invention allows for a kind of terminal, comprising: the device 400 that MCS is set as shown in Figure 4 in an unlicensed spectrum.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of scheme that MCS is set in an unlicensed spectrum newly, solve terminal in correlation technique and cannot adjust the problem of MCS because taking unlicensed spectrum channel transmission data continuously adaptively, guarantee that terminal can adjust MCS adaptively in the process taking unlicensed spectrum channel transmission data continuously, thus ensure that MCS that terminal adopts when continuing to take unlicensed spectrum transmission data can the transfer of data of matched termination and channel conditions better.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of MCS is set in an unlicensed spectrum, is applicable to base station, it is characterized in that, comprising:
Obtain the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum;
According to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determine the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding;
By authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, be arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
2. the method arranging MCS in an unlicensed spectrum according to claim 1, is characterized in that, also comprise:
Periodically or aperiodically sent the lastest imformation of the MCS corresponding with at least one carrier wave described to described target terminal by described mandate frequency spectrum.
3. the method arranging MCS in an unlicensed spectrum according to claim 2, is characterized in that, the translational speed based on described target terminal arranges the time interval sending described lastest imformation to described target terminal, specifically comprises:
When described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal; And
When described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
4. a method of MCS is set in an unlicensed spectrum, is applicable to terminal, it is characterized in that, comprising:
Receive base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described;
When described terminal needs to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave;
Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
5. the method arranging MCS in an unlicensed spectrum according to claim 4, is characterized in that, periodically or aperiodically receives the lastest imformation of the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum.
6. a device of MCS is set in an unlicensed spectrum, is applicable to base station, it is characterized in that, comprising:
Acquiring unit, for obtaining the current and/or historical channel situation between described base station and target terminal in unlicensed spectrum;
Determining unit, for according to the current and/or historical channel situation between described base station and described target terminal in unlicensed spectrum, determines the MCS that described base station and described target terminal at least one carrier wave in described unlicensed spectrum is corresponding;
Transmitting element, for by authorizing frequency spectrum that the information of at least one carrier wave described and the MCS corresponding with at least one carrier wave described are sent to described target terminal, be arranged on MCS when the arbitrary carrier wave at least one carrier wave described works for described target terminal.
7. the device that MCS is set in an unlicensed spectrum according to claim 6, it is characterized in that, described transmitting element also for, periodically or aperiodically sent the lastest imformation of the MCS corresponding with at least one carrier wave described to described target terminal by described mandate frequency spectrum.
8. the device arranging MCS in an unlicensed spectrum according to claim 7, is characterized in that, also comprise:
Setting unit, for arranging the time interval sending described lastest imformation to described target terminal based on the translational speed of described target terminal, specifically for:
When described target terminal is in accurate inactive state, increase the time interval sending described lastest imformation to described target terminal, and when described target terminal is in non-accurate inactive state, reduce the time interval sending described lastest imformation to described target terminal.
9. a device of MCS is set in an unlicensed spectrum, is applicable to terminal, it is characterized in that, comprising:
Receiving element, for receiving base station by authorizing the information of at least one carrier wave in the unlicensed spectrum of frequency spectrum transmission, and the MCS corresponding with at least one carrier wave described;
Processing unit, during for needing in described terminal to be operated on the arbitrary carrier wave at least one carrier wave described, determine the MCS corresponding with described arbitrary carrier wave according to the MCS corresponding with at least one carrier wave described, and the MCS of described terminal on described arbitrary carrier wave is set according to the MCS corresponding with described arbitrary carrier wave;
Wherein, be determined according to the current and/or historical channel situation in the unlicensed spectrum between described terminal by described base station with the corresponding MCS of at least one carrier wave described.
10. the device that MCS is set in an unlicensed spectrum according to claim 9, it is characterized in that, described receiving element is also for the lastest imformation that periodically or aperiodically receives the MCS corresponding with at least one carrier wave described that described base station is sent by described mandate frequency spectrum.
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