CN103546234A - Determination method and device of Modulation and Coding Scheme (MCS) and base station - Google Patents
Determination method and device of Modulation and Coding Scheme (MCS) and base station Download PDFInfo
- Publication number
- CN103546234A CN103546234A CN201210243084.2A CN201210243084A CN103546234A CN 103546234 A CN103546234 A CN 103546234A CN 201210243084 A CN201210243084 A CN 201210243084A CN 103546234 A CN103546234 A CN 103546234A
- Authority
- CN
- China
- Prior art keywords
- code efficiency
- current
- maximum code
- resource
- allows
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a determination method and device of a Modulation and Coding Scheme (MCS) and a base station. The determination method includes determining the maximum coding efficiency allowed by current transmission according to current channel quality information and the resource occupation condition of current control information; determining the MCS of current transmission according to the maximum coding efficiency allowed by current transmission on the basis of the preset mapping relation. The determination method of the MCS is easy to achieve. In addition, the maximum coding efficiency allowed by current transmission is determined according to current channel quality information and the resource occupation condition of the control information, the MCS is obtained through direct mapping of the determined coding efficiency, and therefore accuracy of MCS determination is improved.
Description
Technical field
The present invention relates to the communications field, in particular to definite method, device and the base station of a kind of MCS.
Background technology
At OFDM (Orthogonal Frequency Division Multiple Access, referred to as OFDMA) communication system, for example, Long Term Evolution (Long Term Evolution, referred to as LTE) in system, base station side need to be according to the down channel situation of base station and each UE, determine adaptively descending modulation coding mode (MCS), this mode is called as descending self-adapting coding and modulation control (Adaptive Coding & Modulation, referred to as AMC), descending AMC strategy has influence on descending transmission quality, the index such as efficiency of transmission and throughput, a kind of necessity and important controlling mechanism.
Particularly for down channel, code efficiency is a most important index, systematic function tool is had a great impact, subscriber equipment (User Equipment, referred to as UE) channel quality indication (the Channel Quality Indication of feedback, referred to as CQI) can reflect code efficiency, various MCS and Resource Block (Resource Block, referred to as RB) number combination determined theoretical code efficiency, control information meeting takies the resource of data channel, makes the actual coding efficiency that data are used increase.Therefore, how accurately control coding efficiency, design descending self-adapting are encoded and modulation control, and do not expressly provide in related protocol.
Fig. 1 is according to the flow chart of definite method of the MCS of correlation technique, as shown in Figure 1, in correlation technique, adopt and shine upon and obtain Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio by CQI, referred to as SINR), according to SINR, mapping obtains a MCS again, finally according to control information, takies situation and the Block Error Rate adjustment MCS of resource.The method of this definite MCS need realize complicated and can not determine accurately the MCS that transmission is used through repeatedly mapping, will cause Block Error Rate high or guard MCS and cause the availability of frequency spectrum low owing to using, thereby make throughput relatively low.
For how accurately determining the problem of MCS in correlation technique, effective solution is not yet proposed at present.
Summary of the invention
Definite method for MCS in correlation technique realizes complexity and the low problem of accuracy, the invention provides definite method, device and the base station of a kind of MCS, at least to address the above problem.
According to an aspect of the present invention, provide definite method of MCS a kind of, having comprised: according to current channel quality information and current control information, taken the situation of resource, determine the maximum code efficiency that current transmission allows; The maximum code efficiency allowing according to described current transmission, according to default mapping relations, is determined the modulation coding mode MCS of current transmission.
Preferably, the situation that takies resource according to current channel quality information and current control information is determined the maximum code efficiency that current transmission allows, comprise: obtain the maximum code efficiency that current channel allows, and adjust according to the Block Error Rate of current transmission the maximum code efficiency that described current channel allows; The situation that takies resource according to current control information determines that current data information takies the situation of resource; The situation that the maximum code efficiency allowing according to the current channel after adjusting and described data message take resource, determines the maximum code efficiency that current transmission allows.
Preferably, obtain the maximum code efficiency that current channel allows, comprising: the channel quality indicator (CQI) that receives reported by user equipment UE; According to described CQI, according to default transformational relation, determine the maximum code efficiency that current channel allows.
Preferably, according to the Block Error Rate of current transmission, adjust the maximum code efficiency that described current channel allows, comprising: the Block Error Rate that obtains current transmission; According to the Block Error Rate of current transmission, determine the adjusted value of code efficiency; According to described adjusted value, adjust the maximum code efficiency that described current channel allows, the maximum code efficiency after being adjusted.
Preferably, according to described adjusted value, adjust the maximum code efficiency that described current channel allows, comprising: in the situation that described Block Error Rate is greater than preset value, utilize described adjusted value to reduce the maximum code efficiency that described current channel allows; In the situation that described Block Error Rate is less than preset value, utilize described adjusted value to improve the maximum code efficiency that described current channel allows.
Preferably, the situation that takies resource according to current control information determines that current data information takies the situation of resource, comprising: the situation that takies resource according to current control information is determined the resource that current data information takies; The resource taking according to current data information determines that current data information takies the ratio of resource.
Preferably, the situation that the maximum code efficiency allowing according to the current channel after adjusting and described data message take resource is determined the maximum code efficiency that current transmission allows, comprise: the maximum code efficiency and the described ratio that according to the current channel after adjusting, allow, determine the maximum code efficiency that current transmission allows, wherein, the value of described ratio is larger, and the code efficiency that described current transmission allows is larger.
Preferably, according to following formula, determine the maximum code efficiency that current transmission allows: the maximum code efficiency F=(C+D that current transmission allows) * P, wherein, C is the maximum code efficiency that current channel allows, and D is described adjusted value, and P is described ratio.
According to another aspect of the present invention, provide the determining device of a kind of MCS, having comprised: the first determination module, for take the situation of resource according to current channel quality information and current control information, determine the maximum code efficiency that current transmission allows; The second determination module, determines the modulation coding mode MCS of current transmission for the maximum code efficiency allowing according to described current transmission according to default mapping relations.
Preferably, described the first determination module comprises: acquiring unit, the maximum code efficiency allowing for obtaining current channel; Adjustment unit, for adjusting the maximum code efficiency that described current channel allows according to the Block Error Rate of current transmission; The first determining unit, determines that for take the situation of resource according to current control information current data information takies the situation of resource; The second determining unit, the situation that the maximum code efficiency allowing for the current channel according to after adjusting and described data message take resource, determines the maximum code efficiency that current transmission allows.
Preferably, described acquiring unit obtains the maximum code efficiency that current channel allows in such a way: the channel quality indicator (CQI) that receives reported by user equipment UE; According to described CQI, according to default transformational relation, determine the maximum code efficiency that current channel allows.
Preferably, described adjustment unit is adjusted the maximum code efficiency that described current channel allows in such a way: the Block Error Rate that obtains current transmission; According to the Block Error Rate of current transmission, determine the adjusted value of code efficiency; According to described adjusted value, adjust the maximum code efficiency that described current channel allows, the maximum code efficiency after being adjusted.
Preferably, described the first determining unit determines that current data information takies the situation of resource in such a way: the situation that takies resource according to current control information is determined the resource that current data information takies; The resource taking according to current data information determines that current data information takies the ratio of resource.
Preferably, described the second determining unit is determined the maximum code efficiency that current transmission allows in such a way: the maximum code efficiency and the described ratio that according to the current channel after adjusting, allow, determine the maximum code efficiency that current transmission allows, wherein, the value of described ratio is larger, and the code efficiency that described current transmission allows is larger.
Preferably, described the second determining unit determines according to following formula the maximum code efficiency that current transmission allows: the maximum code efficiency F=(C+D that current transmission allows) * P, and wherein, C is the maximum code efficiency that current channel allows, D is described adjusted value, and P is described ratio.
According to another aspect of the invention, provide a kind of base station, having comprised: said apparatus provided by the invention.
By the present invention, according to current channel quality information and current control information, take the situation of resource, determine the maximum code efficiency that current transmission allows; The maximum code efficiency allowing according to current transmission, according to default mapping relations, is determined the MCS of current transmission.When determining the MCS of current transmission, repeatedly mapping while having avoided determining MCS in correlation technique, make definite method of MCS of the present invention realize simple, and, according to channel quality information and control information, take the situation of resource, determine the maximum code efficiency that current transmission allows, by the code efficiency of determining, directly shine upon and obtain MCS, improved the accuracy of definite MCS.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of definite method of the MCS of correlation technique;
Fig. 2 is according to the flow chart of definite method of the MCS of the embodiment of the present invention;
Fig. 3 is according to the schematic flow sheet of definite method of the MCS of the preferred embodiment of the present invention one;
Fig. 4 is that CQI obtains and the flow chart of maintaining method according to the preferred embodiment of the invention;
Fig. 5 is the flow chart of Block Error Rate statistics and rate adjust value maintaining method according to the preferred embodiment of the invention;
Fig. 6 is the flow chart of definite method of descending MCS according to the preferred embodiment of the invention;
Fig. 7 is according to the structured flowchart of the determining device of the MCS of the embodiment of the present invention;
Fig. 8 is according to the structured flowchart of preferred first determination module of the embodiment of the present invention;
Fig. 9 is the structured flowchart of the adjusting device of MCS according to the preferred embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
In wireless telecommunication system, descending AMC strategy has influence on the controlling mechanism of a kind of key of the indexs such as descending transmission quality, efficiency of transmission and throughput.For the method for determining MCS in correlation technique, realize complicated, and definite MCS that cannot accuracy, thereby affect the problem of systematic function, in order accurately to determine MCS, the embodiment of the present invention provides definite scheme of a kind of MCS, realize relatively simple and can comparatively accurately determine MCS, to improve downstream spectrum utilance, efficiency of transmission and throughput.
According to the embodiment of the present invention, definite method of MCS a kind of is provided, based on code efficiency, realize relatively simple and can comparatively accurately determine MCS.
Fig. 2 is according to the flow chart of definite method of the MCS of the embodiment of the present invention, and as shown in Figure 2, the method can comprise that step S202 is to step S204:
Step S202, the current channel quality information of foundation and current control information take the situation of resource, determine the maximum code efficiency that current transmission allows;
Step S204, the maximum code efficiency allowing according to current transmission, according to default mapping relations, is determined the modulation coding mode (MCS) of current transmission.
By the embodiment of the present invention, according to current channel quality information and current control information, take the situation of resource, determine the maximum code efficiency that current transmission allows; The maximum code efficiency allowing according to current transmission, according to default mapping relations, is determined the MCS of current transmission.When determining the MCS of current transmission, repeatedly mapping while having avoided determining MCS in correlation technique, make definite method of MCS of the present invention realize simple, and, according to channel quality information and control information, take the situation of resource, determine the maximum code efficiency that current transmission allows, by the code efficiency of determining, directly shine upon and obtain MCS, improved the accuracy of definite MCS.
In a preferred implementation of the embodiment of the present invention, according to current channel quality information and current control information, take the situation of resource, determine the maximum code efficiency that current transmission allows, can comprise: obtain the maximum code efficiency that current channel allows, and adjust according to the Block Error Rate of current transmission the maximum code efficiency that described current channel allows; The situation that takies resource according to current control information determines that current data information takies the situation of resource; The situation that the maximum code efficiency allowing according to the current channel after adjusting and data message take resource, determines the maximum code efficiency that current transmission allows.
Further, CQI can reflect code efficiency, for example, by default transformational relation,, the mapping relations of stipulating in agreement, CQI mapping can be obtained to the maximum code efficiency that channel allows, therefore, in a preferred implementation of the embodiment of the present invention, while obtaining the maximum code efficiency of current channel permission, can receive the CQI that UE reports, and according to CQI according to default transformational relation, determine the maximum code efficiency that current channel allows.In actual applications, UE can periodically report CQI, and when determining MCS, the CQI can real-time update receiving, obtains according to up-to-date CQI mapping the maximum code efficiency that channel allows.
In another preferred implementation of the embodiment of the present invention, while adjusting the maximum code efficiency of described current channel permission according to the Block Error Rate of current transmission, can obtain the Block Error Rate of current transmission, according to the Block Error Rate of current transmission, determine the adjusted value of code efficiency, and adjust the maximum code efficiency that current channel allows, the maximum code efficiency after being adjusted according to definite adjusted value.Preferably, when adjusting the maximum code efficiency of current channel permission according to this adjusted value, in the situation that Block Error Rate is greater than preset value, can utilize adjusted value to improve the maximum code efficiency that current channel allows; In the situation that Block Error Rate is less than preset value, can utilize adjusted value to reduce the maximum code efficiency that current channel allows.
In actual applications, the parameter of adjustment can be set according to actual needs, preferably, at Block Error Rate, equate in situation with the absolute value of the difference of preset value, the amplitude that improves the maximum code efficiency of current channel permission is less than the amplitude of the maximum code efficiency that reduces current channel permission, for example, the ratio of the amplitude of raising and the amplitude of reduction can be set, for LTE system, can be set to 1:9 or 2:8 etc.
In addition, control information will take the resource of data channel, make the actual coding efficiency that data are used increase, therefore, can take according to control information the situation of resource, the resource that specified data information takies, and the resource specified data information taking according to data message takies the ratio of resource, the ratio adjustment that takies resource according to data message obtains the code efficiency that current transmission allows.Therefore, in a preferred implementation of the embodiment of the present invention, the situation that takies resource according to current control information is determined when current data information takies the situation of resource, the situation that can take resource according to current control information is determined the resource that current data information takies, and the resource taking according to current data information determines that current data information takies the ratio of resource.
Further, when the situation that the maximum code efficiency allowing according to the current channel after adjusting and data message take resource is determined the maximum code efficiency of current transmission permission, the maximum code efficiency that can allow according to the current channel after adjusting and definite ratio, determine the maximum code efficiency that current transmission allows, wherein, the value of ratio that current data information takies resource is larger, and the code efficiency that current transmission allows is larger.By this preferred implementation, according to for transmitting the efficient resource occupation proportion of data and the maximum code efficiency that the current channel after adjustment allows, directly obtain the final code efficiency allowing, making does not need to select MCS to attempt whether code check is too high.
In a preferred implementation of the embodiment of the present invention, can determine the maximum code efficiency that current transmission allows according to following formula: the maximum code efficiency F=(C+D that current transmission allows) * P, wherein, C is the maximum code efficiency that current channel allows, D is described adjusted value, and P is described ratio.
Preferred embodiment one
In this preferred embodiment, the code efficiency that the current channel that the CQI that the UE of take reports represents allows is basis, according to control information, take the resource ratio of data channel, and the transmission quality index Block Error Rate under current transmission channel, determine the code efficiency that current transmission allows, the code efficiency then allowing according to current transmission is determined concrete descending MCS.
Fig. 3 is according to the schematic flow sheet of definite method of the MCS of the preferred embodiment of the present invention one, as shown in Figure 3, it is basis that the method be take the code efficiency C that current channel that CQI that UE reports represents allows, according to the Block Error Rate D of current transmission, calculate rate adjust value, according to control information, taking resource situation calculates for transmitting the efficient resource occupation proportion P of data, thereby determine the final code efficiency F=(C+D allowing) * P, then by the code efficiency finally allowing, according to the code check in agreement to the mapping table of MCS, obtain descending MCS.
Concrete, the method for this preferred embodiment, can comprise following step (step 1 is to step 5):
Step 1, obtains the CQI that UE reports, and according to the conversion table of describing in agreement, obtains and safeguard the code efficiency C that current channel allows.Preferably, step 1 can comprise following step again:
Step 102, obtains the CQI that UE reports;
Step 104, maps out by CQI the code efficiency C that current channel allows according to the conversion table of describing in agreement;
Step 106, safeguards the code efficiency C that current channel allows.
Step 2, the Block Error Rate D that obtains current transmission calculates rate adjust value.Preferably, step 2 can comprise following step again:
Step 202, obtains the Block Error Rate D of current transmission;
Step 204, directly calculates code efficiency adjusted value according to Block Error Rate D.Preferably, Block Error Rate is higher, and negative justification value is less, and Block Error Rate is lower, and positive justification value is larger.Compare according to Block Error Rate and determine that MCS adjusted value more accurately, directly.
Step 3, takies resource situation according to control information, calculates for transmitting the efficient resource occupation proportion P of data.Preferably, step 3 can comprise following step again:
Step 302, obtains control information and takies resource situation;
Step 304, calculates for transmitting the efficient resource occupation proportion P of data.
Step 4, determines the final code efficiency F=(C+D allowing) * P.
Step 5, obtains descending MCS by the code efficiency finally allowing according to the code check in agreement to the mapping table of MCS.
By this preferred embodiment, compared with prior art, can more accurately control descending MCS, not only realize simply but also can improving performance, owing to realizing simple so having saved and process consuming timely, improved downstream spectrum utilance, efficiency of transmission and throughput.
Preferred embodiment two
In this preferred embodiment, definite method of MCS can comprise that three handling process: CQI obtain and safeguard handling process, Block Error Rate statistics and rate adjust value maintenance process, and descending MCS determines flow process, respectively as Fig. 4, Fig. 5 and Fig. 6 show.
Fig. 4 is that CQI obtains and the flow chart of maintaining method according to the preferred embodiment of the invention, and as shown in Figure 4, CQI obtains and safeguards that processing can comprise that step S401 is to step S402:
Step S401, obtains the CQI that UE reports;
Step S402, maps out by CQI the code efficiency C that current channel allows according to the conversion table of describing in agreement, and the code efficiency of maintenance channel permission.
Fig. 5 is the flow chart of Block Error Rate statistics and rate adjust value maintaining method according to the preferred embodiment of the invention, and as shown in Figure 5, Block Error Rate statistics and rate adjust value maintaining method comprise that step S501 is to step S502:
Step S501, obtains the Block Error Rate D of current transmission;
Step S502, calculates rate adjust value according to Block Error Rate D.
Fig. 6 is the flow chart of definite method of descending MCS according to the preferred embodiment of the invention, and as shown in Figure 6, the method can comprise that step S601 is to step S607:
Step S601, starts descending scheduling to UE;
Step S602, obtains control information and takies resource situation;
Step S603, calculates for transmitting the efficient resource occupation proportion P of data;
Step S604, obtains the maximal rate of the UE feedback permission of maintenance;
Step S605, obtains the rate adjust value of being calculated by Block Error Rate of maintenance;
Step S606, determines the final code efficiency F=(C+D allowing) * P;
Step S607, obtains descending MCS by the code efficiency finally allowing according to the code check in agreement to the mapping table of MCS.
According to the embodiment of the present invention, also provide the determining device of a kind of MCS, in order to realize definite method of the MCS of the embodiment of the present invention.
Fig. 7 is according to the structured flowchart of the determining device of the MCS of the embodiment of the present invention, and as shown in Figure 7, this device mainly comprises: the first determination module 10 and the second determination module 20.Wherein, the first determination module 10, for take the situation of resource according to current channel quality information and current control information, determines the maximum code efficiency that current transmission allows; The second determination module 20, is coupled with the first determination module 10, for the maximum code efficiency allowing according to current transmission, determines the modulation coding mode MCS of current transmission according to default mapping relations.
Fig. 8 is according to the structured flowchart of preferred first determination module of the embodiment of the present invention, and as shown in Figure 8, the first determination module 10 can comprise: acquiring unit 102, the maximum code efficiency allowing for obtaining current channel; Be coupled with acquiring unit 102, adjustment unit 104, the maximum code efficiency allowing for adjust current channel according to the Block Error Rate of current transmission; The first determining unit 106, is coupled with adjustment unit 104, for take the situation of resource according to current control information, determines that current data information takies the situation of resource; The second determining unit 108, is coupled with the first determining unit 106, and the situation that the maximum code efficiency allowing for the current channel according to after adjusting and data message take resource, determines the maximum code efficiency that current transmission allows.
CQI can reflect code efficiency, by default transformational relation, for example, the mapping relations of stipulating in agreement, CQI mapping can be obtained to the maximum code efficiency that channel allows, therefore, in a preferred implementation of the embodiment of the present invention, acquiring unit 102 can obtain the maximum code efficiency that current channel allows in such a way: the channel quality indicator (CQI) that receives reported by user equipment UE; According to described CQI, according to default transformational relation, determine the maximum code efficiency that current channel allows.
In a preferred implementation of the embodiment of the present invention, adjustment unit 104 can be adjusted the maximum code efficiency that current channel allows in such a way: the Block Error Rate that obtains current transmission; According to the Block Error Rate of current transmission, determine the adjusted value of code efficiency; According to above-mentioned adjusted value, adjust the maximum code efficiency that current channel allows, the maximum code efficiency after being adjusted.
In addition, control information will take the resource of data channel, make the actual coding efficiency that data are used increase, therefore, can take according to control information the situation of resource, the resource that specified data information takies, and the resource specified data information taking according to data message takies the ratio of resource, the ratio adjustment that takies resource according to data message obtains the code efficiency that current transmission allows.Therefore, in a preferred implementation of the embodiment of the present invention, the first determining unit 106 can determine that current data information takies the situation of resource in such a way: the situation that takies resource according to current control information is determined the resource that current data information takies; The resource taking according to current data information determines that current data information takies the ratio of resource.
In a preferred implementation of the embodiment of the present invention, the second determining unit 108 can be determined the maximum code efficiency that current transmission allows in such a way: the maximum code efficiency allowing according to the current channel after adjusting and definite ratio, determine the maximum code efficiency that current transmission allows, wherein, the value of ratio that current data information takies resource is larger, and the code efficiency that current transmission allows is larger.
Further, the second determining unit 108 can be determined the maximum code efficiency that current transmission allows according to following formula: the maximum code efficiency F=(C+D that current transmission allows) * P, and wherein, C is the maximum code efficiency that current channel allows, D is described adjusted value, and P is described ratio.
Preferred embodiment
Fig. 9 is the structured flowchart of the adjusting device of MCS according to the preferred embodiment of the invention, as shown in Figure 9, this device mainly comprises: CQI acquisition module, Block Error Rate acquisition module, control information occupation proportion computing module, the final code check determination module allowing, and code check is to MCS mapping block.
In the preferred embodiment of the present invention, CQI acquisition module is equivalent to the acquiring unit 102 of the embodiment of the present invention, the adjustment unit 104 that error rate acquisition module can be realized the embodiment of the present invention obtains the function of Block Error Rate, control information occupation proportion computing module is equivalent to the first determining unit 106 of the embodiment of the present invention, the final code check determination module allowing is equivalent to the first determination module 10 of the embodiment of the present invention, and code check to MCS mapping block is equivalent to the second determination module 20 of the embodiment of the present invention.
According to the embodiment of the present invention, a kind of base station is also provided, comprising: the determining device of the MCS that the embodiment of the present invention provides.
As can be seen from the above description, the present invention has realized following technique effect: according to current channel quality information and current control information, take the situation of resource, determine the maximum code efficiency that current transmission allows; The maximum code efficiency allowing according to current transmission, according to default mapping relations, is determined the MCS of current transmission.When determining the MCS of current transmission, repeatedly mapping while having avoided determining MCS in correlation technique, make definite method of MCS of the present invention realize simple, and, according to channel quality information and control information, take the situation of resource, determine the maximum code efficiency that current transmission allows, by the code efficiency of determining, directly shine upon and obtain MCS, improved the accuracy of definite MCS.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
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 (16)
1. a definite method of MCS, is characterized in that, comprising:
According to current channel quality information and current control information, take the situation of resource, determine the maximum code efficiency that current transmission allows;
The maximum code efficiency allowing according to described current transmission, according to default mapping relations, is determined the modulation coding mode MCS of current transmission.
2. method according to claim 1, is characterized in that, the situation that takies resource according to current channel quality information and current control information is determined the maximum code efficiency that current transmission allows, and comprising:
Obtain the maximum code efficiency that current channel allows, and adjust according to the Block Error Rate of current transmission the maximum code efficiency that described current channel allows;
The situation that takies resource according to current control information determines that current data information takies the situation of resource;
The situation that the maximum code efficiency allowing according to the current channel after adjusting and described data message take resource, determines the maximum code efficiency that current transmission allows.
3. method according to claim 2, is characterized in that, obtains the maximum code efficiency that current channel allows, and comprising:
Receive the channel quality indicator (CQI) of reported by user equipment UE;
According to described CQI, according to default transformational relation, determine the maximum code efficiency that current channel allows.
4. method according to claim 2, is characterized in that, according to the Block Error Rate of current transmission, adjusts the maximum code efficiency that described current channel allows, and comprising:
Obtain the Block Error Rate of current transmission;
According to the Block Error Rate of current transmission, determine the adjusted value of code efficiency;
According to described adjusted value, adjust the maximum code efficiency that described current channel allows, the maximum code efficiency after being adjusted.
5. method according to claim 4, is characterized in that, according to described adjusted value, adjusts the maximum code efficiency that described current channel allows, and comprising:
In the situation that described Block Error Rate is greater than preset value, utilize described adjusted value to reduce the maximum code efficiency that described current channel allows;
In the situation that described Block Error Rate is less than preset value, utilize described adjusted value to improve the maximum code efficiency that described current channel allows.
6. method according to claim 2, is characterized in that, the situation that takies resource according to current control information determines that current data information takies the situation of resource, comprising:
The situation that takies resource according to current control information is determined the resource that current data information takies;
The resource taking according to current data information determines that current data information takies the ratio of resource.
7. method according to claim 6, is characterized in that, the situation that the maximum code efficiency allowing according to the current channel after adjusting and described data message take resource is determined the maximum code efficiency that current transmission allows, and comprising:
The maximum code efficiency and the described ratio that according to the current channel after adjusting, allow, determine the maximum code efficiency that current transmission allows, and wherein, the value of described ratio is larger, and the code efficiency that described current transmission allows is larger.
8. method according to claim 7, is characterized in that, according to following formula, determines the maximum code efficiency that current transmission allows:
The maximum code efficiency F=(C+D that current transmission allows) * P, wherein, C is the maximum code efficiency that current channel allows, and D is described adjusted value, and P is described ratio.
9. a determining device of MCS, is characterized in that, comprising:
The first determination module, for take the situation of resource according to current channel quality information and current control information, determines the maximum code efficiency that current transmission allows;
The second determination module, determines the modulation coding mode MCS of current transmission for the maximum code efficiency allowing according to described current transmission according to default mapping relations.
10. device according to claim 9, is characterized in that, described the first determination module comprises:
Acquiring unit, the maximum code efficiency allowing for obtaining current channel;
Adjustment unit, for adjusting the maximum code efficiency that described current channel allows according to the Block Error Rate of current transmission;
The first determining unit, determines that for take the situation of resource according to current control information current data information takies the situation of resource;
The second determining unit, the situation that the maximum code efficiency allowing for the current channel according to after adjusting and described data message take resource, determines the maximum code efficiency that current transmission allows.
11. devices according to claim 10, is characterized in that, described acquiring unit obtains the maximum code efficiency that current channel allows in such a way:
Receive the channel quality indicator (CQI) of reported by user equipment UE;
According to described CQI, according to default transformational relation, determine the maximum code efficiency that current channel allows.
12. devices according to claim 10, is characterized in that, described adjustment unit is adjusted the maximum code efficiency that described current channel allows in such a way:
Obtain the Block Error Rate of current transmission;
According to the Block Error Rate of current transmission, determine the adjusted value of code efficiency;
According to described adjusted value, adjust the maximum code efficiency that described current channel allows, the maximum code efficiency after being adjusted.
13. devices according to claim 10, is characterized in that, described the first determining unit determines that current data information takies the situation of resource in such a way:
The situation that takies resource according to current control information is determined the resource that current data information takies;
The resource taking according to current data information determines that current data information takies the ratio of resource.
14. devices according to claim 13, is characterized in that, described the second determining unit is determined the maximum code efficiency that current transmission allows in such a way:
The maximum code efficiency and the described ratio that according to the current channel after adjusting, allow, determine the maximum code efficiency that current transmission allows, and wherein, the value of described ratio is larger, and the code efficiency that described current transmission allows is larger.
15. devices according to claim 14, is characterized in that, described the second determining unit determines according to following formula the maximum code efficiency that current transmission allows:
The maximum code efficiency F=(C+D that current transmission allows) * P, wherein, C is the maximum code efficiency that current channel allows, and D is described adjusted value, and P is described ratio.
16. 1 kinds of base stations, is characterized in that, comprising: the device in claim 9 to 15 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210243084.2A CN103546234B (en) | 2012-07-13 | 2012-07-13 | The determining method, apparatus of MCS and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210243084.2A CN103546234B (en) | 2012-07-13 | 2012-07-13 | The determining method, apparatus of MCS and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103546234A true CN103546234A (en) | 2014-01-29 |
| CN103546234B CN103546234B (en) | 2018-07-06 |
Family
ID=49969331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210243084.2A Active CN103546234B (en) | 2012-07-13 | 2012-07-13 | The determining method, apparatus of MCS and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103546234B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018053806A1 (en) * | 2016-09-23 | 2018-03-29 | 广东欧珀移动通信有限公司 | Wireless communication method and device |
| CN109076523A (en) * | 2016-04-01 | 2018-12-21 | 华为技术有限公司 | The system and method dispatched and transmitted for distributed loop-opening multi-user multipoint cooperative (CoMP) |
| US11178580B2 (en) | 2015-12-22 | 2021-11-16 | Huawei Technologies Co., Ltd. | Mobility handling in Ultra Dense Networks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167031A (en) * | 1997-08-29 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| CN101388744A (en) * | 2007-09-11 | 2009-03-18 | 中兴通讯股份有限公司 | Adaptive encoding modulation method |
| CN101674149A (en) * | 2008-09-08 | 2010-03-17 | 中兴通讯股份有限公司 | Adaptive code modulation method |
| CN102404838A (en) * | 2010-09-10 | 2012-04-04 | 普天信息技术研究院有限公司 | Uplink resource allocation method and uplink resource allocation device |
-
2012
- 2012-07-13 CN CN201210243084.2A patent/CN103546234B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167031A (en) * | 1997-08-29 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| CN101388744A (en) * | 2007-09-11 | 2009-03-18 | 中兴通讯股份有限公司 | Adaptive encoding modulation method |
| CN101674149A (en) * | 2008-09-08 | 2010-03-17 | 中兴通讯股份有限公司 | Adaptive code modulation method |
| CN102404838A (en) * | 2010-09-10 | 2012-04-04 | 普天信息技术研究院有限公司 | Uplink resource allocation method and uplink resource allocation device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11178580B2 (en) | 2015-12-22 | 2021-11-16 | Huawei Technologies Co., Ltd. | Mobility handling in Ultra Dense Networks |
| CN109076523A (en) * | 2016-04-01 | 2018-12-21 | 华为技术有限公司 | The system and method dispatched and transmitted for distributed loop-opening multi-user multipoint cooperative (CoMP) |
| CN109076523B (en) * | 2016-04-01 | 2021-01-05 | 华为技术有限公司 | System and method for distributed open-loop multi-user coordinated multi-point (CoMP) scheduling and transmission |
| WO2018053806A1 (en) * | 2016-09-23 | 2018-03-29 | 广东欧珀移动通信有限公司 | Wireless communication method and device |
| US11102677B2 (en) | 2016-09-23 | 2021-08-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless communication method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103546234B (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2811676B1 (en) | Information transmission method and device | |
| CN101883391B (en) | Uplink control signaling feedback processing method and system | |
| RU2485684C2 (en) | Device, system and method of control of information exchange along reverse communications line | |
| CN101682467B (en) | Transmission adaptation in a wireless network | |
| EP3637875B1 (en) | Power control method and device | |
| CN109478978A (en) | Carrier wave polymerization with the variable propagation duration | |
| CN101572585B (en) | Method and device for acquiring mapping relation between data MCS and CQI code rate | |
| KR20200013041A (en) | Channel quality feedback method and apparatus | |
| CN102577487B (en) | Control the method and apparatus being used for the overhead of transfer channel state information in the wireless network | |
| CN101635588B (en) | Power control method and device | |
| EP3314794B1 (en) | Method and base station for selecting a transport format | |
| CN1640045A (en) | System and method for adjusting quality of service in a communication system | |
| CN102271354A (en) | Link adaptation method for long term evolution (LTE) system, base station and terminal | |
| CN1703846A (en) | Power control for communications systems utilizing high speed shared channels | |
| CN102037697A (en) | Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system | |
| CN102752874A (en) | Physical downlink shared channel (PDSCH) scheduling method and device | |
| CN107734622A (en) | Ascending power control method and device | |
| US20110026417A1 (en) | Base station and method for use in mobile communication system | |
| CN101877624A (en) | Method for revising channel qualification identification CQI and base station | |
| CN102065534B (en) | Power adjustment method and device | |
| CN101568145B (en) | LTE system CQI reporting implementation method | |
| CN101674654A (en) | PDCCH channel encoding rate regulation method and evolution base station | |
| KR102404192B1 (en) | Communication method, MCS receiving method, MCS notification method, and device | |
| CN103546234A (en) | Determination method and device of Modulation and Coding Scheme (MCS) and base station | |
| CN103548286A (en) | Method and base station for power allocation in wireless system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |