CN103746776A - Data transmission method, data transmission device and base station - Google Patents
Data transmission method, data transmission device and base station Download PDFInfo
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- CN103746776A CN103746776A CN201410036453.XA CN201410036453A CN103746776A CN 103746776 A CN103746776 A CN 103746776A CN 201410036453 A CN201410036453 A CN 201410036453A CN 103746776 A CN103746776 A CN 103746776A
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- 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
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Abstract
The invention provides a data transmission method, comprises the steps of notifying a terminal to adopt a specific MCS (modulation and coding scheme) mode to perform data transmission, notifying the terminal to select an MCS/CQI (channel quality indicator)/TBS (transport block size) table corresponding to the 256QAM for data transmission when the specific MCS mode is 256QAM, otherwise notifying the terminal to select the original MCS/CQI/TBS table for data transmission. The invention also provides a data transmission method and a base station. By the technical scheme, the terminal can accurately select the used MCS/CQI/TBS table aiming at different modulation coding modes, so the data transmission is smoothly realized.
Description
Technical field
The present invention relates to wireless communication technology field, in particular to a kind of data transmission method, a kind of data transmission device and a kind of base station.
Background technology
In the standardized process of LTE-A system, introduced the small-cell for small cell() discussion.Because the typical deployed scene of small cell is indoor or short-range covering, the link-quality between service node and terminal is better, and traditional modulation system can not meet the demands.In order further to improve spectrum efficiency, introduced the modulation system of 256QAM.
Yet, introduce 256QAM and can produce on current agreement certain impact.Such as having determined that need to introduce new MCS/CQI/TBS form indicates 256QAM at present, make to exist corresponding to the new form of 256QAM with corresponding to the old form of original modulation coding mode simultaneously.
Therefore, how notification terminal is used existing in current agreement or the form of new introducing, becomes technical problem urgently to be resolved hurrily at present.
Summary of the invention
The present invention, just based on the problems referred to above, has proposed a kind of new technical scheme, can make the MCS/CQI/TBS form of the accurate choice for use of terminal for different modulation coding modes, thereby realize smoothly transfer of data.
In view of this, the present invention proposes a kind of data transmission method, comprising: notification terminal adopts specific MCS mode to carry out transfer of data; And, when described specific MCS mode is 256QAM, notify described terminal to select the MCS(Modulation and Coding Scheme corresponding to 256QAM, modulation coding mode)/CQI(Channel Quality Indicator, link-quality indication)/TBS(Transport Block Size, transmission block size) form, for described transfer of data, otherwise notify described terminal to select original MCS/CQI/TBS form, for described transfer of data.
In this technical scheme, because 256QAM corresponds respectively to different MCS/CQI/TBS forms from original other modulation coding modes, thereby pass through when the MCS mode of notification terminal employing, also the MCS/CQI/TBS form of use is informed to terminal, make terminal to realize the modulating-coding to transmission data with correct MCS/CQI/TBS form, avoid the MCS/CQI/TBS form of mistake in using.
Certainly, it will be understood by those skilled in the art that for any modulation coding mode that may occur in the future, if desired define new MCS/CQI/TBS form, all can realize by the way to accurately the informing of terminal, to avoid the MCS/CQI/TBS form of mistake in using.
In technique scheme, preferably, the process of notifying described terminal to carry out the selection of form comprises: notify described terminal to adopt specific transmission mode to carry out described transfer of data; Wherein, when the main transmission mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when the fall-back mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select original MCS/CQI/TBS form.
In this technical scheme, utilize transmission mode (TM, Transmission Mode) main transmission mode and the fall-back mode of definition, 256QAM and original other modulation coding modes are divided into two classifications, and the main transmission mode MCS/CQI/TBS form corresponding with 256QAM, 256QAM is associated, and fall-back mode is associated with original modulation coding mode, original MCS/CQI/TBS form, thereby clearly notification terminal adopts correct MCS/CQI/TBS form, and contribute to reduce signaling consumption.
In technique scheme, preferably, described specific transmission mode comprises: arbitrary transmission mode that described terminal is supported; Or only by the transmission mode of supporting the terminal-specific of 256QAM.
In this technical scheme, as a kind of comparatively preferred embodiment, existing all transmission modes, comprise TM1～TM10, all can be for notify corresponding form types to terminal, thus can either realize accurately the informing of form types, can avoid the change to existing protocol again.
As another kind comparatively preferred embodiment, can define special-purpose transmission mode for 256QAM, such as being defined as TM11, make the TM11 of former protocols having and new definition manage respectively, avoid TM1～TM10 to cause too much change.
In technique scheme, preferably, the process of notifying described terminal to carry out the selection of form comprises: when described specific MCS mode is 256QAM, adopt First ray to carry out scrambling to corresponding Downlink Control Information, otherwise adopt the second sequence to carry out scrambling to corresponding Downlink Control Information.
In this technical scheme, when adopting different modulation coding modes, be 256QAM or original modulation coding mode, can adopt corresponding different sequence to Downlink Control Information (DCI, Downlink Control Information) carry out scrambling, the sequence that terminal is used can be according to descrambling time, recognizes and modulation coding mode and the corresponding MCS/CQI/TBS form of current employing contributes to reduce signaling consumption.
In technique scheme, preferably, the process of notifying described terminal to carry out the selection of form comprises: generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form; To described terminal, send described message frame.
In this technical scheme, can pass through message frame, directly to terminal, inform the MCS/CQI/TBS form of its required employing, thereby help avoid the message misinformation that other modes may cause, reach.
In technique scheme, preferably, described message frame is RRC signaling or MAC signaling.Certainly, what those skilled in the art should understand that is, obviously can be by the signaling of arbitrary form, all can realize the message of above-mentioned form types passes on, such as passing on by physical layer signaling, and while making the numerical value of this physical layer signaling be the first value, show that terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, and when the numerical value of this physical layer signaling is the second value, show that terminal need to select original MCS/CQI/TBS form.
In technique scheme, preferably, also comprise: when described specific MCS mode is 256QAM, the bit quantity of expansion CQI reporting information.
In this technical scheme, when CQI reporting information is subband CQI reporting information, owing to adopting 256QAM or more during the modulation coding mode of high-order, SNR(signal to noise ratio) interval may be widened, thereby makes the precision of the offset value (side-play amount) that comprises in original subband CQI reporting information inadequate, thereby by increasing bit quantity, contribute to provide more offset value, thereby improve the precision of offset value, make base station can realize scheduling more accurately, elevator system performance.
Certainly, CQI reporting information can be also other types, such as being broadband CQI reporting information, by increasing bit quantity, contribute to more accurately to indicate the broadband CQI information reporting or the broadband CQI value of indicating corresponding larger SNR scope, base station can obtain CQI information more accurately, elevator system performance like this.
In technique scheme, preferably, the described CQI reporting information after expansion comprises 3 bits.
In this technical scheme, comparatively particularly, the CQI reporting information of 2 current bits can be expanded to 3 bits, thereby the offset value of 4 grades of script (level) is extended to 8 grades, to realize base station scheduling more accurately.Certainly, it will be understood by those skilled in the art that the concrete bit for CQI reporting information, can adjust as required, such as by extending to larger bit, contribute to comprise more transmission information, and realize base station scheduling more accurately.
In technique scheme, preferably, described CQI reporting information is subband CQI information.
The invention allows for a kind of data transmission device, comprising: modulation coding mode notification unit, adopts specific MCS mode to carry out transfer of data for notification terminal; Form types notification unit, for in the situation that described specific MCS mode is 256QAM, notify described terminal to select the MCS/CQI/TBS form corresponding to 256QAM, for described transfer of data, otherwise notify described terminal to select original MCS/CQI/TBS form, for described transfer of data.
In this technical scheme, because 256QAM corresponds respectively to different MCS/CQI/TBS forms from original other modulation coding modes, thereby pass through when the MCS mode of notification terminal employing, also the MCS/CQI/TBS form of use is informed to terminal, make terminal to realize the modulating-coding to transmission data with correct MCS/CQI/TBS form, avoid the MCS/CQI/TBS form of mistake in using.
Certainly, it will be understood by those skilled in the art that for any modulation coding mode that may occur in the future, if desired define new MCS/CQI/TBS form, all can realize by the way to accurately the informing of terminal, to avoid the MCS/CQI/TBS form of mistake in using.
In technique scheme, preferably, described form types notification unit comprises: transmission mode notice subelement, for notifying described terminal to adopt specific transmission mode to carry out described transfer of data; Wherein, when the main transmission mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when the fall-back mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select original MCS/CQI/TBS form.
In this technical scheme, utilize transmission mode (TM, Transmission Mode) main transmission mode and the fall-back mode of definition, 256QAM and original other modulation coding modes are divided into two classifications, and the main transmission mode MCS/CQI/TBS form corresponding with 256QAM, 256QAM is associated, and fall-back mode is associated with original modulation coding mode, original MCS/CQI/TBS form, thereby clearly notification terminal adopts correct MCS/CQI/TBS form, and contribute to reduce signaling consumption.
In technique scheme, preferably, described specific transmission mode comprises: arbitrary transmission mode that described terminal is supported; Or only by the transmission mode of supporting the terminal-specific of 256QAM.
In this technical scheme, as a kind of comparatively preferred embodiment, existing all transmission modes, comprise TM1～TM10, all can be for notify corresponding form types to terminal, thus can either realize accurately the informing of form types, can avoid the change to existing protocol again.
As another kind comparatively preferred embodiment, can define special-purpose transmission mode for 256QAM, such as being defined as TM11, make the TM11 of former protocols having and new definition manage respectively, avoid TM1～TM10 to cause too much change.
In technique scheme, preferably, described form types notification unit comprises: scrambling subelement, for in the situation that described specific MCS mode is 256QAM, adopt First ray to carry out scrambling to corresponding Downlink Control Information, otherwise adopt the second sequence to carry out scrambling to corresponding Downlink Control Information.
In this technical scheme, when adopting different modulation coding modes, be 256QAM or original modulation coding mode, can adopt corresponding different sequence to Downlink Control Information (DCI, Downlink Control Information) carry out scrambling, the sequence that terminal is used can be according to descrambling time, recognizes and modulation coding mode and the corresponding MCS/CQI/TBS form of current employing contributes to reduce signaling consumption.
In technique scheme, preferably, described form types notification unit comprises: message frame generates subelement, for generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form; Message frame sends subelement, for sending described message frame to described terminal.
In this technical scheme, can pass through message frame, directly to terminal, inform the MCS/CQI/TBS form of its required employing, thereby help avoid the message misinformation that other modes may cause, reach.
In technique scheme, preferably, described message frame is RRC signaling or MAC signaling.Certainly, what those skilled in the art should understand that is, obviously can be by the signaling of arbitrary form, all can realize the message of above-mentioned form types passes on, such as passing on by physical layer signaling, and while making the numerical value of this physical layer signaling be the first value, show that terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, and when the numerical value of this physical layer signaling is the second value, show that terminal need to select original MCS/CQI/TBS form.
In technique scheme, preferably, also comprise: Information expansion unit, for when described specific MCS mode is 256QAM, the bit quantity of expansion CQI reporting information.
In this technical scheme, when CQI reporting information is subband CQI reporting information, owing to adopting 256QAM or more during the modulation coding mode of high-order, SNR(signal to noise ratio) interval may be widened, thereby makes the precision of the offset value (side-play amount) that comprises in original subband CQI reporting information inadequate, thereby by increasing bit quantity, contribute to provide more offset value, thereby improve the precision of offset value, make base station can realize scheduling more accurately, elevator system performance.
Certainly, CQI reporting information can be also other types, such as being broadband CQI reporting information, by increasing bit quantity, contribute to more accurately to indicate the broadband CQI information reporting or the broadband CQI value of indicating corresponding larger SNR scope, base station can obtain CQI information more accurately, elevator system performance like this.
In technique scheme, preferably, the described CQI reporting information after expansion comprises 3 bits.
In this technical scheme, comparatively particularly, the CQI reporting information of 2 current bits can be expanded to 3 bits, thereby the offset value of 4 grades of script (level) is extended to 8 grades, to realize base station scheduling more accurately.Certainly, it will be understood by those skilled in the art that the concrete bit for CQI reporting information, can adjust as required, such as by extending to larger bit, contribute to comprise more transmission information, and realize base station scheduling more accurately.
In technique scheme, preferably, described CQI reporting information is subband CQI information.
The invention allows for a kind of base station, comprising: the data transmission device as described in any one in technique scheme.
By above technical scheme, can make the MCS/CQI/TBS form of the accurate choice for use of terminal for different modulation coding modes, thereby realize smoothly transfer of data.
Accompanying drawing explanation
Fig. 1 shows the schematic flow diagram of data transmission method according to an embodiment of the invention;
Fig. 2 shows schematic flow diagram from form types to terminal that implicitly notify according to an embodiment of the invention;
Fig. 3 show according to another embodiment of the invention implicitly to the schematic flow diagram of terminal notice form types;
Fig. 4 shows explicitly according to an embodiment of the invention to the schematic flow diagram of terminal notice form types;
Fig. 5 shows the schematic block diagram of data transmission device according to an embodiment of the invention;
Fig. 6 shows the schematic block diagram of base station according to an embodiment of the invention.
Embodiment
In order more clearly to 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, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth 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 subject to the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow diagram of data transmission method according to an embodiment of the invention.
As shown in Figure 1, data transmission method according to an embodiment of the invention, comprising:
In this technical scheme, because 256QAM corresponds respectively to different MCS/CQI/TBS forms from original other modulation coding modes, thereby pass through when the MCS mode of notification terminal employing, also the MCS/CQI/TBS form of use is informed to terminal, make terminal to realize the modulating-coding to transmission data with correct MCS/CQI/TBS form, avoid the MCS/CQI/TBS form of mistake in using.
Certainly, it will be understood by those skilled in the art that for any modulation coding mode that may occur in the future, if desired define new MCS/CQI/TBS form, all can realize by the way to accurately the informing of terminal, to avoid the MCS/CQI/TBS form of mistake in using.
For concrete informing and adopt which kind of MCS/CQI/TBS form to terminal, in fact there are a variety of implementations, the wherein several comparatively typical technological means of take are below example, and its concrete technical scheme is described in detail.
Embodiment mono-: by the method for implicit expression
Execution mode one
Fig. 2 shows schematic flow diagram from form types to terminal that implicitly notify according to an embodiment of the invention.
As shown in Figure 2, according to an embodiment of the invention implicitly in the method for terminal notice form types, the process of notifying described terminal to carry out the selection of form comprises:
Whether step 204, judges in above-mentioned specific transmission mode, be specifically to adopt main transmission mode, if so, enters step 206, otherwise enters step 208.
In this technical scheme, utilize transmission mode (TM, Transmission Mode) main transmission mode and the fall-back mode of definition, 256QAM and original other modulation coding modes are divided into two classifications, and the main transmission mode MCS/CQI/TBS form corresponding with 256QAM, 256QAM is associated, and fall-back mode is associated with original modulation coding mode, original MCS/CQI/TBS form, thereby clearly notification terminal adopts correct MCS/CQI/TBS form, and contribute to reduce signaling consumption.
Particularly, the mode based on above-mentioned transmission mode, can also specifically be divided into two kinds of situations:
1, based on existing transmission mode
In correlation technique, defined 10 kinds of transmission modes, be designated as TM1～TM10.In above-mentioned transmission mode, every kind of transmission mode all has main transmission mode and fall-back mode.
Therefore, can utilize in existing protocol the definition for above-mentioned 10 kinds of transmission modes,, for any one or multiple existing transmission mode, make it: under main transmission mode, corresponding to 256QAM and corresponding new MCS/CQI/TBS form; And under fall-back mode, corresponding to original modulation coding mode and corresponding original MCS/CQI/TBS form.
By the definition to original transmission mode, make to realize to accurately the informing of form types, can avoid the change to existing protocol again.
2, based on dedicated transmissions pattern
As another kind of embodiment, can define special-purpose transmission mode for 256QAM, such as being defined as TM11.Particularly, as shown in table 1, be under a kind of concrete preferred implementation, for the definition of above-mentioned dedicated transmissions pattern T11.
Table 1
By the transmission mode of definition 256QAM special use, make the TM11 of former protocols having and new definition manage respectively, avoid TM1～TM10 to cause too much change.
Execution mode two
Fig. 3 show according to another embodiment of the invention implicitly to the schematic flow diagram of terminal notice form types.
As shown in Figure 3, implicitly comprising to the process of terminal notice form types according to another embodiment of the invention:
In this technical scheme, when adopting different modulation coding modes, be 256QAM or original modulation coding mode, can adopt corresponding different sequence to Downlink Control Information (DCI, Downlink Control Information) carry out scrambling, the sequence that terminal is used can be according to descrambling time, recognizes and modulation coding mode and the corresponding MCS/CQI/TBS form of current employing contributes to reduce signaling consumption.
Certainly, it will be understood by those skilled in the art that for other modulation coding modes of high-order more that may occur later, obviously also can be by adopting corresponding sequence, to distinguish over other modulation coding modes and corresponding MCS/CQI/TBS form thereof.
It is to be noted: while informing adopted MCS/CQI/TBS form by the mode of scrambling to terminal, because terminal must accurately be understood the dissimilar corresponding scramble sequence of MCS/CQI/TBS form, thereby for base station, its process has higher controllability.
Particularly, if terminal can correctly demodulate the DCI receiving, illustrate that terminal understood corresponding control mode; And if terminal cannot correctly demodulate the DCI receiving, base station can recognize that this terminal does not have correct understanding for the service condition of dissimilar form, thereby can carry out corresponding further processing.
Embodiment bis-: by explicit mode
Fig. 4 shows explicitly according to an embodiment of the invention to the schematic flow diagram of terminal notice form types.
As shown in Figure 4, explicitly according to an embodiment of the invention comprises to the process of terminal notice form types:
Step 402, generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form;
Step 404, sends described message frame to described terminal.
In this technical scheme, can pass through message frame, directly to terminal, inform the MCS/CQI/TBS form of its required employing, thereby help avoid the message misinformation that other modes may cause, reach.
In technique scheme, preferably, described message frame is RRC signaling or MAC signaling.
Such as take RRC signaling as example, the MCS/CQI/TBS form adopting in order to distinguish 256QAM and original modulation coding mode, the specific implementation method of notifying by RRC signaling can be:
Therefore, numerical value in above-mentioned RRC signaling is during corresponding to " normal ", show that corresponding MCS/CQI/TBS form is corresponding to original modulation coding mode, and when numerical value is during corresponding to " extended ", show that corresponding MCS/CQI/TBS form is corresponding to 256QAM, thereby can accurately inform the MCS/CQI/TBS form of the required employing of terminal.
Certainly, what those skilled in the art should understand that is, obviously can be by the signaling of arbitrary form, all can realize the message of above-mentioned form types passes on, such as passing on by physical layer signaling, and the numerical value that makes this physical layer signaling is while being the first value (such as being 0), show that terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, and when the numerical value of this physical layer signaling is the second value (such as being 1), show that terminal need to select original MCS/CQI/TBS form.
In addition, owing to introducing 256QAM or the modulation coding mode of high-order more, making SNR(signal to noise ratio) interval may be widened, thus make the precision of the offset value (side-play amount) that comprises in original subband CQI reporting information inadequate.In order to address the above problem, the present invention, on the basis of the technical scheme of each above-mentioned notice form types, has also further proposed following technical proposals:
In above-mentioned arbitrary technical scheme, preferably, also comprise: when described specific MCS mode is 256QAM(or the modulation coding mode of high-order more) time, the bit quantity of expansion CQI reporting information.
In this technical scheme, by increasing bit quantity, contribute to provide more offset value, thereby improve the precision of offset value, make base station can realize scheduling more accurately, elevator system performance.
Table 2
As shown in table 2, while carrying out modulating-coding for employing 256QAM, suppose bit is extended to after 3, the subband CQI reporting information value obtaining and the corresponding relation between offset level, it can make the offset value of 4 grades (level) originally extend to 8 grades, to realize base station scheduling more accurately.Certainly, what those skilled in the art should understand that is, concrete bit for CQI reporting information, can adjust as required, such as by extending to larger bit or adjusting each bit to fixed offset level, contribute to comprise more transmission information, and realize base station scheduling more accurately.
In addition, CQI reporting information can be also other types, such as being broadband CQI reporting information, by increasing bit quantity, contribute to more accurately to indicate the broadband CQI information reporting or the broadband CQI value of indicating corresponding larger SNR scope, base station can obtain CQI information more accurately, elevator system performance like this.
Fig. 5 shows the schematic block diagram of data transmission device according to an embodiment of the invention.
As shown in Figure 5, data transmission device 500 according to an embodiment of the invention, comprising: modulation coding mode notification unit 502, adopts specific MCS mode to carry out transfer of data for notification terminal; Form types notification unit 504, for in the situation that described specific MCS mode is 256QAM, notify described terminal to select the MCS/CQI/TBS form corresponding to 256QAM, for described transfer of data, otherwise notify described terminal to select original MCS/CQI/TBS form, for described transfer of data.
In this technical scheme, because 256QAM corresponds respectively to different MCS/CQI/TBS forms from original other modulation coding modes, thereby pass through when the MCS mode of notification terminal employing, also the MCS/CQI/TBS form of use is informed to terminal, make terminal to realize the modulating-coding to transmission data with correct MCS/CQI/TBS form, avoid the MCS/CQI/TBS form of mistake in using.
Certainly, it will be understood by those skilled in the art that for any modulation coding mode that may occur in the future, if desired define new MCS/CQI/TBS form, all can realize by the way to accurately the informing of terminal, to avoid the MCS/CQI/TBS form of mistake in using.
In technique scheme, preferably, described form types notification unit 504 comprises: transmission mode notice subelement 5042, for notifying described terminal to adopt specific transmission mode to carry out described transfer of data; Wherein, when the main transmission mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when the fall-back mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select original MCS/CQI/TBS form.
In this technical scheme, utilize transmission mode (TM, Transmission Mode) main transmission mode and the fall-back mode of definition, 256QAM and original other modulation coding modes are divided into two classifications, and the main transmission mode MCS/CQI/TBS form corresponding with 256QAM, 256QAM is associated, and fall-back mode is associated with original modulation coding mode, original MCS/CQI/TBS form, thereby clearly notification terminal adopts correct MCS/CQI/TBS form, and contribute to reduce signaling consumption.
In technique scheme, preferably, described specific transmission mode comprises: arbitrary transmission mode that described terminal is supported; Or only by the transmission mode of supporting the terminal-specific of 256QAM.
In this technical scheme, as a kind of comparatively preferred embodiment, existing all transmission modes, comprise TM1～TM10, all can be for notify corresponding form types to terminal, thus can either realize accurately the informing of form types, can avoid the change to existing protocol again.
As another kind comparatively preferred embodiment, can define special-purpose transmission mode for 256QAM, such as being defined as TM11, make the TM11 of former protocols having and new definition manage respectively, avoid TM1～TM10 to cause too much change.
In technique scheme, preferably, described form types notification unit 504 comprises: scrambling subelement 5044, for in the situation that described specific MCS mode is 256QAM, adopt First ray to carry out scrambling to corresponding Downlink Control Information, otherwise adopt the second sequence to carry out scrambling to corresponding Downlink Control Information.
In this technical scheme, when adopting different modulation coding modes, be 256QAM or original modulation coding mode, can adopt corresponding different sequence to Downlink Control Information (DCI, Downlink Control Information) carry out scrambling, the sequence that terminal is used can be according to descrambling time, recognizes and modulation coding mode and the corresponding MCS/CQI/TBS form of current employing contributes to reduce signaling consumption.
In technique scheme, preferably, described form types notification unit 504 comprises: message frame generates subelement 5046, for generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form; Message frame sends subelement 5048, for sending described message frame to described terminal.
In this technical scheme, can pass through message frame, directly to terminal, inform the MCS/CQI/TBS form of its required employing, thereby help avoid the message misinformation that other modes may cause, reach.
In technique scheme, preferably, described message frame is RRC signaling or MAC signaling.Certainly, what those skilled in the art should understand that is, obviously can be by the signaling of arbitrary form, all can realize the message of above-mentioned form types passes on, such as passing on by physical layer signaling, and while making the numerical value of this physical layer signaling be the first value, show that terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, and when the numerical value of this physical layer signaling is the second value, show that terminal need to select original MCS/CQI/TBS form.
In technique scheme, preferably, also comprise: Information expansion unit 506, for when described specific MCS mode is 256QAM, the bit quantity of expansion CQI reporting information.
In this technical scheme, when CQI reporting information is subband CQI reporting information, owing to adopting 256QAM or more during the modulation coding mode of high-order, SNR(signal to noise ratio) interval may be widened, thereby makes the precision of the offset value (side-play amount) that comprises in original subband CQI reporting information inadequate, thereby by increasing bit quantity, contribute to provide more offset value, thereby improve the precision of offset value, make base station can realize scheduling more accurately, elevator system performance.
Certainly, CQI reporting information can be also other types, such as being broadband CQI reporting information, by increasing bit quantity, contribute to more accurately to indicate the broadband CQI information reporting or the broadband CQI value of indicating corresponding larger SNR scope, base station can obtain CQI information more accurately, elevator system performance like this.
In technique scheme, preferably, the described CQI reporting information after expansion comprises 3 bits.
In this technical scheme, comparatively particularly, the CQI reporting information of 2 current bits can be expanded to 3 bits, thereby the offset value of 4 grades of script (level) is extended to 8 grades, to realize base station scheduling more accurately.Certainly, it will be understood by those skilled in the art that the concrete bit for CQI reporting information, can adjust as required, such as by extending to larger bit, contribute to comprise more transmission information, and realize base station scheduling more accurately.
In technique scheme, preferably, described CQI reporting information is subband CQI information.
Fig. 6 shows the schematic block diagram of base station according to an embodiment of the invention.
As shown in Figure 6, base station 600 according to an embodiment of the invention, comprises data transmission device 500 as shown in Figure 5.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of data transmission method, a kind of data transmission device and a kind of base station, can be for different modulation coding modes, make the MCS/CQI/TBS form of the accurate choice for use of terminal, thereby realize smoothly transfer of data.
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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (19)
1. a data transmission method, is characterized in that, comprising:
Notification terminal adopts specific MCS mode to carry out transfer of data; And
When described specific MCS mode is 256QAM, notify described terminal to select the MCS/CQI/TBS form corresponding to 256QAM, for described transfer of data, otherwise notify described terminal to select original MCS/CQI/TBS form, for described transfer of data.
2. data transmission method according to claim 1, is characterized in that, the process of notifying described terminal to carry out the selection of form comprises:
Notify described terminal to adopt specific transmission mode to carry out described transfer of data;
Wherein, when the main transmission mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when the fall-back mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select original MCS/CQI/TBS form.
3. data transmission method according to claim 2, is characterized in that, described specific transmission mode comprises:
Arbitrary transmission mode that described terminal is supported;
Or only by the transmission mode of supporting the terminal-specific of 256QAM.
4. data transmission method according to claim 1, is characterized in that, the process of notifying described terminal to carry out the selection of form comprises:
When described specific MCS mode is 256QAM, adopts First ray to carry out scrambling to corresponding Downlink Control Information, otherwise adopt the second sequence to carry out scrambling to corresponding Downlink Control Information.
5. data transmission method according to claim 1, is characterized in that, the process of notifying described terminal to carry out the selection of form comprises:
Generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form;
To described terminal, send described message frame.
6. data transmission method according to claim 5, is characterized in that, described message frame is RRC signaling or MAC signaling.
7. according to the data transmission method described in any one in claim 1 to 6, it is characterized in that, also comprise:
When described specific MCS mode is 256QAM, the bit quantity of expansion CQI reporting information.
8. data transmission method according to claim 7, is characterized in that, the described CQI reporting information after expansion comprises 3 bits.
9. data transmission method according to claim 7, is characterized in that, described CQI reporting information is subband CQI information.
10. a data transmission device, is characterized in that, comprising:
Modulation coding mode notification unit, adopts specific MCS mode to carry out transfer of data for notification terminal;
Form types notification unit, for in the situation that described specific MCS mode is 256QAM, notify described terminal to select the MCS/CQI/TBS form corresponding to 256QAM, for described transfer of data, otherwise notify described terminal to select original MCS/CQI/TBS form, for described transfer of data.
11. data transmission devices according to claim 10, is characterized in that, described form types notification unit comprises:
Transmission mode notice subelement, for notifying described terminal to adopt specific transmission mode to carry out described transfer of data;
Wherein, when the main transmission mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when the fall-back mode of notifying described terminal to adopt described specific transmission mode is carried out described transfer of data, show that described terminal need to select original MCS/CQI/TBS form.
12. data transmission devices according to claim 11, is characterized in that, described specific transmission mode comprises:
Arbitrary transmission mode that described terminal is supported;
Or only by the transmission mode of supporting the terminal-specific of 256QAM.
13. data transmission devices according to claim 10, is characterized in that, described form types notification unit comprises:
Scrambling subelement, in the situation that described specific MCS mode is 256QAM, adopts First ray to carry out scrambling to corresponding Downlink Control Information, otherwise adopts the second sequence to carry out scrambling to corresponding Downlink Control Information.
14. data transmission devices according to claim 10, is characterized in that, described form types notification unit comprises:
Message frame generates subelement, for generating messages frame, in described message frame, comprise form types sign, when described form types is designated the first value, represent that described terminal need to select the MCS/CQI/TBS form corresponding to 256QAM, when described form types is designated the second value, represent that described terminal need to select original MCS/CQI/TBS form;
Message frame sends subelement, for sending described message frame to described terminal.
15. data transmission devices according to claim 14, is characterized in that, described message frame is RRC signaling or MAC signaling.
16. according to claim 10 to the data transmission device described in any one in 15, it is characterized in that, also comprises:
Information expansion unit, for when described specific MCS mode is 256QAM, the bit quantity of expansion CQI reporting information.
17. data transmission devices according to claim 16, is characterized in that, the described CQI reporting information after expansion comprises 3 bits.
18. data transmission devices according to claim 16, is characterized in that, described CQI reporting information is subband CQI information.
19. 1 kinds of base stations, is characterized in that, comprising: the data transmission device as described in any one in claim 10 to 18.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036453.XA CN103746776A (en) | 2014-01-24 | 2014-01-24 | Data transmission method, data transmission device and base station |
| CN201510030231.1A CN104506282A (en) | 2014-01-24 | 2015-01-20 | Data transmission method, data transmission device and base station |
| PCT/CN2015/075543 WO2016115773A1 (en) | 2014-01-24 | 2015-03-31 | Data transmission method, data transmission apparatus and base station |
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| CN201410036453.XA CN103746776A (en) | 2014-01-24 | 2014-01-24 | Data transmission method, data transmission device and base station |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016115773A1 (en) * | 2014-01-24 | 2016-07-28 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method, data transmission apparatus and base station |
| CN106233687A (en) * | 2014-01-06 | 2016-12-14 | 英特尔Ip公司 | Select and the system and method for configuration for modulation and encoding scheme |
| CN106605393A (en) * | 2014-07-29 | 2017-04-26 | 瑞典爱立信有限公司 | Signaling of modulation configuration |
| WO2018059567A1 (en) * | 2016-09-29 | 2018-04-05 | 华为技术有限公司 | Codebook-based channel status information feedback method and device |
| WO2019062276A1 (en) * | 2017-09-29 | 2019-04-04 | 中兴通讯股份有限公司 | Method and device for configuring channel quality indicator information, and storage medium |
| WO2019157697A1 (en) * | 2018-02-14 | 2019-08-22 | 株式会社Ntt都科摩 | Transmission block size list constructing and selecting method, random access method, and communication device |
| US11122551B2 (en) | 2014-01-06 | 2021-09-14 | Apple Inc. | Systems and methods for modulation and coding scheme selection and configuration |
| CN113572571A (en) * | 2020-04-29 | 2021-10-29 | 华为技术有限公司 | Data transmission method and device, chip system and computer readable storage medium |
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| CN110034859B (en) | 2018-01-12 | 2021-06-08 | 华为技术有限公司 | Communication method and device |
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| CN102546124B (en) * | 2010-12-31 | 2015-12-16 | 华为技术有限公司 | The feedback method of Signal to Interference plus Noise Ratio and equipment |
| CN102624481A (en) * | 2011-01-31 | 2012-08-01 | 中兴通讯股份有限公司 | Self-adaptive modulation and coding method and apparatus |
| CN102571287B (en) * | 2012-02-08 | 2015-02-25 | 普天信息技术研究院有限公司 | E-PDCCH (Extended Physical Downlink Control Channel) scrambling method and ACK/NACK (Acknowledgement Character/Negative Acknowledgement) transmission method |
| US9642118B2 (en) * | 2012-02-20 | 2017-05-02 | Nokia Solutions And Networks Oy | Controlling a modulation and coding scheme for a transmission between a base station and a user equipment |
| CN113364556A (en) * | 2012-03-02 | 2021-09-07 | 华为技术有限公司 | Information transmission method and equipment |
| CN103580788A (en) * | 2012-07-27 | 2014-02-12 | 电信科学技术研究院 | Method and device for transmitting MCS instructing information |
| US9419772B2 (en) * | 2012-12-17 | 2016-08-16 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving MCS index for 256QAM in wireless access system |
| CN103973403B (en) * | 2013-02-06 | 2018-02-23 | ***通信集团公司 | Modulation and Coding Scheme instruction, downlink data method of reseptance and device |
| CN111224763B (en) * | 2013-03-11 | 2022-09-30 | 北京三星通信技术研究有限公司 | Downlink transmission method and user terminal equipment |
| CN103746776A (en) * | 2014-01-24 | 2014-04-23 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method, data transmission device and base station |
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2014
- 2014-01-24 CN CN201410036453.XA patent/CN103746776A/en active Pending
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2015
- 2015-01-20 CN CN201510030231.1A patent/CN104506282A/en active Pending
- 2015-03-31 WO PCT/CN2015/075543 patent/WO2016115773A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106233687A (en) * | 2014-01-06 | 2016-12-14 | 英特尔Ip公司 | Select and the system and method for configuration for modulation and encoding scheme |
| US11122551B2 (en) | 2014-01-06 | 2021-09-14 | Apple Inc. | Systems and methods for modulation and coding scheme selection and configuration |
| WO2016115773A1 (en) * | 2014-01-24 | 2016-07-28 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method, data transmission apparatus and base station |
| CN106605393A (en) * | 2014-07-29 | 2017-04-26 | 瑞典爱立信有限公司 | Signaling of modulation configuration |
| US10616029B2 (en) | 2014-07-29 | 2020-04-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Signaling of modulation configuration |
| CN106605393B (en) * | 2014-07-29 | 2020-05-08 | 瑞典爱立信有限公司 | Terminal, base station and method for modulation configuration |
| US11018921B2 (en) | 2014-07-29 | 2021-05-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Signaling of modulation configuration |
| WO2018059567A1 (en) * | 2016-09-29 | 2018-04-05 | 华为技术有限公司 | Codebook-based channel status information feedback method and device |
| WO2019062276A1 (en) * | 2017-09-29 | 2019-04-04 | 中兴通讯股份有限公司 | Method and device for configuring channel quality indicator information, and storage medium |
| WO2019157697A1 (en) * | 2018-02-14 | 2019-08-22 | 株式会社Ntt都科摩 | Transmission block size list constructing and selecting method, random access method, and communication device |
| CN113572571A (en) * | 2020-04-29 | 2021-10-29 | 华为技术有限公司 | Data transmission method and device, chip system and computer readable storage medium |
| WO2021218434A1 (en) * | 2020-04-29 | 2021-11-04 | 华为技术有限公司 | Data transmission method and device, system on chip and computer-readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104506282A (en) | 2015-04-08 |
| WO2016115773A1 (en) | 2016-07-28 |
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